CryptoManager.Net reference

Added LibraryHelpers.CreateHttpClientMessageHandle to standardize HttpMessageHandler creation
Added REST client option for selecting HTTP protocol version
Added REST client option for HTTP client keep alive interval
Added HttpVersion to WebCallResult responses
Updated request logic to default to using HTTP version 2.0 for dotnet core

CryptoExchange.Net.Protobuf/Converters/Protobuf/ProtobufMessageAccessor.cs

@@ -285,7 +285,7 @@ namespace CryptoExchange.Net.Converters.Protobuf
             }
             catch (Exception ex)
             {
-                return new CallResult<object>(new DeserializeError(ex.Message));
+                return new CallResult<object>(new DeserializeError("Protobuf deserialization failed: " + ex.Message, ex));
             }
         }
 
@@ -320,7 +320,7 @@ namespace CryptoExchange.Net.Converters.Protobuf
             }
             catch(Exception ex)
             {
-                return new CallResult<T>(new DeserializeError(ex.ToLogString()));
+                return new CallResult<T>(new DeserializeError("Protobuf deserialization failed: " + ex.Message, ex));
             }
         }
 
@@ -354,7 +354,7 @@ namespace CryptoExchange.Net.Converters.Protobuf
             {
                 // Not a json message
                 IsValid = false;
-                return Task.FromResult(new CallResult(new DeserializeError("ProtoBufError: " + ex.Message, ex)));
+                return Task.FromResult(new CallResult(new DeserializeError("Protobuf deserialization failed: " + ex.Message, ex)));
             }
         }
 
@@ -446,7 +446,7 @@ namespace CryptoExchange.Net.Converters.Protobuf
             }
             catch (Exception ex)
             {
-                return new CallResult<object>(new DeserializeError(ex.ToLogString()));
+                return new CallResult<object>(new DeserializeError("Protobuf deserialization failed: " + ex.Message, ex));
             }
         }
 
@@ -485,7 +485,7 @@ namespace CryptoExchange.Net.Converters.Protobuf
             }
             catch (Exception ex)
             {
-                return new CallResult<T>(new DeserializeError(ex.Message));
+                return new CallResult<T>(new DeserializeError("Protobuf deserialization failed: " + ex.Message, ex));
             }
         }
 
@@ -504,7 +504,7 @@ namespace CryptoExchange.Net.Converters.Protobuf
             {
                 // Not a json message
                 IsValid = false;
-                return new CallResult(new DeserializeError("ProtobufError: " + ex.Message, ex));
+                return new CallResult(new DeserializeError("Protobuf deserialization failed: " + ex.Message, ex));
             }
         }
 

CryptoExchange.Net.Protobuf/CryptoExchange.Net.Protobuf.csproj

@@ -6,9 +6,9 @@
     <PackageId>CryptoExchange.Net.Protobuf</PackageId>
     <Authors>JKorf</Authors>
     <Description>Protobuf support for CryptoExchange.Net</Description>
-    <PackageVersion>9.4.0</PackageVersion>
-    <AssemblyVersion>9.4.0</AssemblyVersion>
-    <FileVersion>9.4.0</FileVersion>
+    <PackageVersion>9.7.0</PackageVersion>
+    <AssemblyVersion>9.7.0</AssemblyVersion>
+    <FileVersion>9.7.0</FileVersion>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
     <PackageTags>CryptoExchange;CryptoExchange.Net</PackageTags>
     <RepositoryType>git</RepositoryType>
@@ -41,7 +41,7 @@
     <DocumentationFile>CryptoExchange.Net.Protobuf.xml</DocumentationFile>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="CryptoExchange.Net" Version="9.4.0" />
+    <PackageReference Include="CryptoExchange.Net" Version="9.7.0" />
     <PackageReference Include="protobuf-net" Version="3.2.56" />
   </ItemGroup>
 </Project>

CryptoExchange.Net.Protobuf/README.md

@@ -5,6 +5,15 @@
 Protobuf support for CryptoExchange.Net.
 
 ## Release notes
+* Version 9.7.0 - 01 Sep 2025
+    * Updated CryptoExchange.Net version to 9.7.0, see https://github.com/JKorf/CryptoExchange.Net/releases/
+
+* Version 9.6.0 - 25 Aug 2025
+    * Updated CryptoExchange.Net version to 9.6.0
+
+* Version 9.5.0 - 19 Aug 2025
+    * Updated CryptoExchange.Net version to 9.5.0
+
 * Version 9.4.0 - 04 Aug 2025
     * Updated CryptoExchange.Net to version 9.4.0, see https://github.com/JKorf/CryptoExchange.Net/releases/
     * Updated protobuf-net package version to 3.2.56

CryptoExchange.Net.UnitTests/CallResultTests.cs

@@ -1,9 +1,11 @@
 using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Errors;
 using NUnit.Framework;
 using NUnit.Framework.Legacy;
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Net;
 using System.Net.Http;
 using System.Text;
 using System.Threading.Tasks;
@@ -16,9 +18,9 @@ namespace CryptoExchange.Net.UnitTests
         [Test]
         public void TestBasicErrorCallResult()
         {
-            var result = new CallResult(new ServerError("TestError"));
+            var result = new CallResult(new ServerError("TestError", ErrorInfo.Unknown));
 
-            ClassicAssert.AreSame(result.Error.Message, "TestError");
+            ClassicAssert.AreSame(result.Error.ErrorCode, "TestError");
             ClassicAssert.IsFalse(result);
             ClassicAssert.IsFalse(result.Success);
         }
@@ -36,9 +38,9 @@ namespace CryptoExchange.Net.UnitTests
         [Test]
         public void TestCallResultError()
         {
-            var result = new CallResult<object>(new ServerError("TestError"));
+            var result = new CallResult<object>(new ServerError("TestError", ErrorInfo.Unknown));
 
-            ClassicAssert.AreSame(result.Error.Message, "TestError");
+            ClassicAssert.AreSame(result.Error.ErrorCode, "TestError");
             ClassicAssert.IsNull(result.Data);
             ClassicAssert.IsFalse(result);
             ClassicAssert.IsFalse(result.Success);
@@ -71,11 +73,11 @@ namespace CryptoExchange.Net.UnitTests
         [Test]
         public void TestCallResultErrorAs()
         {
-            var result = new CallResult<TestObjectResult>(new ServerError("TestError"));
+            var result = new CallResult<TestObjectResult>(new ServerError("TestError", ErrorInfo.Unknown));
             var asResult = result.As<TestObject2>(default);
 
             ClassicAssert.IsNotNull(asResult.Error);
-            ClassicAssert.AreSame(asResult.Error.Message, "TestError");
+            ClassicAssert.AreSame(asResult.Error.ErrorCode, "TestError");
             ClassicAssert.IsNull(asResult.Data);
             ClassicAssert.IsFalse(asResult);
             ClassicAssert.IsFalse(asResult.Success);
@@ -84,11 +86,11 @@ namespace CryptoExchange.Net.UnitTests
         [Test]
         public void TestCallResultErrorAsError()
         {
-            var result = new CallResult<TestObjectResult>(new ServerError("TestError"));
-            var asResult = result.AsError<TestObject2>(new ServerError("TestError2"));
+            var result = new CallResult<TestObjectResult>(new ServerError("TestError", ErrorInfo.Unknown));
+            var asResult = result.AsError<TestObject2>(new ServerError("TestError2", ErrorInfo.Unknown));
 
             ClassicAssert.IsNotNull(asResult.Error);
-            ClassicAssert.AreSame(asResult.Error.Message, "TestError2");
+            ClassicAssert.AreSame(asResult.Error.ErrorCode, "TestError2");
             ClassicAssert.IsNull(asResult.Data);
             ClassicAssert.IsFalse(asResult);
             ClassicAssert.IsFalse(asResult.Success);
@@ -97,11 +99,11 @@ namespace CryptoExchange.Net.UnitTests
         [Test]
         public void TestWebCallResultErrorAsError()
         {
-            var result = new WebCallResult<TestObjectResult>(new ServerError("TestError"));
-            var asResult = result.AsError<TestObject2>(new ServerError("TestError2"));
+            var result = new WebCallResult<TestObjectResult>(new ServerError("TestError", ErrorInfo.Unknown));
+            var asResult = result.AsError<TestObject2>(new ServerError("TestError2", ErrorInfo.Unknown));
 
             ClassicAssert.IsNotNull(asResult.Error);
-            ClassicAssert.AreSame(asResult.Error.Message, "TestError2");
+            ClassicAssert.AreSame(asResult.Error.ErrorCode, "TestError2");
             ClassicAssert.IsNull(asResult.Data);
             ClassicAssert.IsFalse(asResult);
             ClassicAssert.IsFalse(asResult.Success);
@@ -112,6 +114,7 @@ namespace CryptoExchange.Net.UnitTests
         {
             var result = new WebCallResult<TestObjectResult>(
                 System.Net.HttpStatusCode.OK,
+                HttpVersion.Version11,
                 new KeyValuePair<string, string[]>[0],
                 TimeSpan.FromSeconds(1),
                 null,
@@ -124,10 +127,10 @@ namespace CryptoExchange.Net.UnitTests
                 ResultDataSource.Server,
                 new TestObjectResult(),
                 null);
-            var asResult = result.AsError<TestObject2>(new ServerError("TestError2"));
+            var asResult = result.AsError<TestObject2>(new ServerError("TestError2", ErrorInfo.Unknown));
 
             ClassicAssert.IsNotNull(asResult.Error);
-            Assert.That(asResult.Error.Message == "TestError2");
+            Assert.That(asResult.Error.ErrorCode == "TestError2");
             Assert.That(asResult.ResponseStatusCode == System.Net.HttpStatusCode.OK);
             Assert.That(asResult.ResponseTime == TimeSpan.FromSeconds(1));
             Assert.That(asResult.RequestUrl == "https://test.com/api");
@@ -142,6 +145,7 @@ namespace CryptoExchange.Net.UnitTests
         {
             var result = new WebCallResult<TestObjectResult>(
                 System.Net.HttpStatusCode.OK,
+                HttpVersion.Version11,
                 new KeyValuePair<string, string[]>[0],
                 TimeSpan.FromSeconds(1),
                 null,

CryptoExchange.Net.UnitTests/RestClientTests.cs

@@ -96,7 +96,7 @@ namespace CryptoExchange.Net.UnitTests
             ClassicAssert.IsFalse(result.Success);
             Assert.That(result.Error != null);
             Assert.That(result.Error is ServerError);
-            Assert.That(result.Error.Code == 123);
+            Assert.That(result.Error.ErrorCode == "123");
             Assert.That(result.Error.Message == "Invalid request");
         }
 
@@ -182,7 +182,7 @@ namespace CryptoExchange.Net.UnitTests
         [TestCase("/sapi/test1", true)]
         [TestCase("/sapi/test2", true)]
         [TestCase("/api/test1", false)]
-        [TestCase("sapi/test1", false)]
+        [TestCase("sapi/test1", true)]
         [TestCase("/sapi/", true)]
         public async Task PartialEndpointRateLimiterEndpoints(string endpoint, bool expectLimiting)
         {

CryptoExchange.Net.UnitTests/TestImplementations/Sockets/TestChannelQuery.cs

@@ -1,4 +1,5 @@
 using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Errors;
 using CryptoExchange.Net.Objects.Sockets;
 using CryptoExchange.Net.Sockets;
 using System;
@@ -40,7 +41,7 @@ namespace CryptoExchange.Net.UnitTests.TestImplementations.Sockets
         {
             if (!message.Data.Status.Equals("confirmed", StringComparison.OrdinalIgnoreCase))
             {
-                return new CallResult<SubResponse>(new ServerError(message.Data.Status));
+                return new CallResult<SubResponse>(new ServerError(ErrorInfo.Unknown with { Message = message.Data.Status }));
             }
 
             return message.ToCallResult();

CryptoExchange.Net.UnitTests/TestImplementations/Sockets/TestSubscription.cs

@@ -28,7 +28,7 @@ namespace CryptoExchange.Net.UnitTests.TestImplementations.Sockets
             return new CallResult(null);
         }
 
-        public override Query GetSubQuery(SocketConnection connection) => new TestQuery("sub", new object(), false, 1);
-        public override Query GetUnsubQuery() => new TestQuery("unsub", new object(), false, 1);
+        protected override Query GetSubQuery(SocketConnection connection) => new TestQuery("sub", new object(), false, 1);
+        protected override Query GetUnsubQuery(SocketConnection connection) => new TestQuery("unsub", new object(), false, 1);
     }
 }

CryptoExchange.Net.UnitTests/TestImplementations/Sockets/TestSubscriptionWithResponseCheck.cs

@@ -28,7 +28,7 @@ namespace CryptoExchange.Net.UnitTests.TestImplementations.Sockets
             return new CallResult(null);
         }
 
-        public override Query GetSubQuery(SocketConnection connection) => new TestChannelQuery(_channel, "subscribe", false, 1);
-        public override Query GetUnsubQuery() => new TestChannelQuery(_channel, "unsubscribe", false, 1);
+        protected override Query GetSubQuery(SocketConnection connection) => new TestChannelQuery(_channel, "subscribe", false, 1);
+        protected override Query GetUnsubQuery(SocketConnection connection) => new TestChannelQuery(_channel, "unsubscribe", false, 1);
     }
 }

CryptoExchange.Net.UnitTests/TestImplementations/TestBaseClient.cs

@@ -10,6 +10,7 @@ using CryptoExchange.Net.Clients;
 using CryptoExchange.Net.Converters.SystemTextJson;
 using CryptoExchange.Net.Interfaces;
 using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Errors;
 using CryptoExchange.Net.Objects.Options;
 using CryptoExchange.Net.SharedApis;
 using CryptoExchange.Net.UnitTests.TestImplementations;
@@ -55,7 +56,7 @@ namespace CryptoExchange.Net.UnitTests
             var accessor = CreateAccessor();
             var valid = accessor.Read(stream, true).Result;
             if (!valid)
-                return new CallResult<T>(new ServerError(data));
+                return new CallResult<T>(new ServerError(ErrorInfo.Unknown with { Message = data }));
             
             var deserializeResult = accessor.Deserialize<T>();
             return deserializeResult;
@@ -77,10 +78,10 @@ namespace CryptoExchange.Net.UnitTests
         {
         }
 
-        public override void AuthenticateRequest(RestApiClient apiClient, Uri uri, HttpMethod method, ref IDictionary<string, object> uriParams, ref IDictionary<string, object> bodyParams, ref Dictionary<string, string> headers, bool auth, ArrayParametersSerialization arraySerialization, HttpMethodParameterPosition parameterPosition, RequestBodyFormat bodyFormat)
+        public override void ProcessRequest(RestApiClient apiClient, RestRequestConfiguration requestConfig)
         {
         }
-
+        
         public string GetKey() => _credentials.Key;
         public string GetSecret() => _credentials.Secret;
     }

CryptoExchange.Net.UnitTests/TestImplementations/TestRestClient.cs

@@ -18,6 +18,7 @@ using Microsoft.Extensions.Options;
 using System.Linq;
 using CryptoExchange.Net.Converters.SystemTextJson;
 using System.Text.Json.Serialization;
+using CryptoExchange.Net.Objects.Errors;
 
 namespace CryptoExchange.Net.UnitTests.TestImplementations
 {
@@ -59,8 +60,8 @@ namespace CryptoExchange.Net.UnitTests.TestImplementations
             request.Setup(c => c.GetHeaders()).Returns(() => headers.ToArray());
 
             var factory = Mock.Get(Api1.RequestFactory);
-            factory.Setup(c => c.Create(It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
-                .Callback<HttpMethod, Uri, int>((method, uri, id) => 
+            factory.Setup(c => c.Create(It.IsAny<Version>(), It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
+                .Callback<Version, HttpMethod, Uri, int>((version, method, uri, id) => 
                 { 
                     request.Setup(a => a.Uri).Returns(uri);
                     request.Setup(a => a.Method).Returns(method); 
@@ -68,8 +69,8 @@ namespace CryptoExchange.Net.UnitTests.TestImplementations
                 .Returns(request.Object);
 
             factory = Mock.Get(Api2.RequestFactory);
-            factory.Setup(c => c.Create(It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
-                .Callback<HttpMethod, Uri, int>((method, uri, id) =>
+            factory.Setup(c => c.Create(It.IsAny<Version>(), It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
+                .Callback<Version, HttpMethod, Uri, int>((version, method, uri, id) =>
                 {
                     request.Setup(a => a.Uri).Returns(uri);
                     request.Setup(a => a.Method).Returns(method);
@@ -89,12 +90,12 @@ namespace CryptoExchange.Net.UnitTests.TestImplementations
             request.Setup(c => c.GetResponseAsync(It.IsAny<CancellationToken>())).Throws(we);
 
             var factory = Mock.Get(Api1.RequestFactory);
-            factory.Setup(c => c.Create(It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
+            factory.Setup(c => c.Create(It.IsAny<Version>(), It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
                 .Returns(request.Object);
 
 
             factory = Mock.Get(Api2.RequestFactory);
-            factory.Setup(c => c.Create(It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
+            factory.Setup(c => c.Create(It.IsAny<Version>(), It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
                 .Returns(request.Object);
         }
 
@@ -117,13 +118,13 @@ namespace CryptoExchange.Net.UnitTests.TestImplementations
             request.Setup(c => c.GetHeaders()).Returns(headers.ToArray());
 
             var factory = Mock.Get(Api1.RequestFactory);
-            factory.Setup(c => c.Create(It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
-                .Callback<HttpMethod, Uri, int>((method, uri, id) => request.Setup(a => a.Uri).Returns(uri))
+            factory.Setup(c => c.Create(It.IsAny<Version>(), It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
+                .Callback<Version, HttpMethod, Uri, int>((version, method, uri, id) => request.Setup(a => a.Uri).Returns(uri))
                 .Returns(request.Object);
 
             factory = Mock.Get(Api2.RequestFactory);
-            factory.Setup(c => c.Create(It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
-                .Callback<HttpMethod, Uri, int>((method, uri, id) => request.Setup(a => a.Uri).Returns(uri))
+            factory.Setup(c => c.Create(It.IsAny<Version>(), It.IsAny<HttpMethod>(), It.IsAny<Uri>(), It.IsAny<int>()))
+                .Callback<Version, HttpMethod, Uri, int>((version, method, uri, id) => request.Setup(a => a.Uri).Returns(uri))
                 .Returns(request.Object);
         }
     }
@@ -197,7 +198,7 @@ namespace CryptoExchange.Net.UnitTests.TestImplementations
         {
             var errorData = accessor.Deserialize<TestError>();
 
-            return new ServerError(errorData.Data.ErrorCode, errorData.Data.ErrorMessage);
+            return new ServerError(errorData.Data.ErrorCode, GetErrorInfo(errorData.Data.ErrorCode, errorData.Data.ErrorMessage));
         }
 
         public override TimeSpan? GetTimeOffset()

CryptoExchange.Net/Authentication/AuthenticationProvider.cs

@@ -51,30 +51,11 @@ namespace CryptoExchange.Net.Authentication
         }
 
         /// <summary>
-        /// Authenticate a request. Output parameters should include the providedParameters input
+        /// Authenticate a request
         /// </summary>
         /// <param name="apiClient">The Api client sending the request</param>
-        /// <param name="uri">The uri for the request</param>
-        /// <param name="method">The method of the request</param>
-        /// <param name="auth">If the requests should be authenticated</param>
-        /// <param name="arraySerialization">Array serialization type</param>
-        /// <param name="requestBodyFormat">The formatting of the request body</param>
-        /// <param name="uriParameters">Parameters that need to be in the Uri of the request. Should include the provided parameters if they should go in the uri</param>
-        /// <param name="bodyParameters">Parameters that need to be in the body of the request. Should include the provided parameters if they should go in the body</param>
-        /// <param name="headers">The headers that should be send with the request</param>
-        /// <param name="parameterPosition">The position where the providedParameters should go</param>
-        public abstract void AuthenticateRequest(
-            RestApiClient apiClient,
-            Uri uri,
-            HttpMethod method,
-            ref IDictionary<string, object>? uriParameters,
-            ref IDictionary<string, object>? bodyParameters,
-            ref Dictionary<string, string>? headers,
-            bool auth,
-            ArrayParametersSerialization arraySerialization,
-            HttpMethodParameterPosition parameterPosition,
-            RequestBodyFormat requestBodyFormat
-            );
+        /// <param name="requestConfig">The request configuration</param>
+        public abstract void ProcessRequest(RestApiClient apiClient, RestRequestConfiguration requestConfig);
 
         /// <summary>
         /// SHA256 sign the data and return the bytes

CryptoExchange.Net/Clients/BaseApiClient.cs

@@ -1,7 +1,9 @@
 using System;
+using System.Collections.Generic;
 using CryptoExchange.Net.Authentication;
 using CryptoExchange.Net.Interfaces;
 using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Errors;
 using CryptoExchange.Net.Objects.Options;
 using CryptoExchange.Net.SharedApis;
 using Microsoft.Extensions.Logging;
@@ -54,6 +56,11 @@ namespace CryptoExchange.Net.Clients
         /// </summary>
         public ExchangeOptions ClientOptions { get; }
 
+        /// <summary>
+        /// Mapping of a response code to known error types
+        /// </summary>
+        protected internal virtual ErrorMapping ErrorMapping { get; } = new ErrorMapping([]);
+
         /// <summary>
         /// ctor
         /// </summary>
@@ -87,6 +94,16 @@ namespace CryptoExchange.Net.Clients
         /// <inheritdoc />
         public abstract string FormatSymbol(string baseAsset, string quoteAsset, TradingMode tradingMode, DateTime? deliverDate = null);
 
+        /// <summary>
+        /// Get error info for a response code
+        /// </summary>
+        public ErrorInfo GetErrorInfo(int code, string? message = null) => GetErrorInfo(code.ToString(), message);
+
+        /// <summary>
+        /// Get error info for a response code
+        /// </summary>
+        public ErrorInfo GetErrorInfo(string code, string? message = null) => ErrorMapping.GetErrorInfo(code.ToString(), message);
+
         /// <inheritdoc />
         public void SetApiCredentials<T>(T credentials) where T : ApiCredentials
         {

CryptoExchange.Net/Clients/RestApiClient.cs

@@ -11,6 +11,7 @@ using CryptoExchange.Net.Caching;
 using CryptoExchange.Net.Interfaces;
 using CryptoExchange.Net.Logging.Extensions;
 using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Errors;
 using CryptoExchange.Net.Objects.Options;
 using CryptoExchange.Net.RateLimiting;
 using CryptoExchange.Net.RateLimiting.Interfaces;
@@ -54,7 +55,7 @@ namespace CryptoExchange.Net.Clients
         /// <summary>
         /// Request headers to be sent with each request
         /// </summary>
-        protected Dictionary<string, string>? StandardRequestHeaders { get; set; }
+        protected Dictionary<string, string> StandardRequestHeaders { get; set; } = [];
 
         /// <summary>
         /// Whether parameters need to be ordered
@@ -105,7 +106,7 @@ namespace CryptoExchange.Net.Clients
                   options,
                   apiOptions)
         {
-            RequestFactory.Configure(options.Proxy, options.RequestTimeout, httpClient);
+            RequestFactory.Configure(options, httpClient);
         }
 
         /// <summary>
@@ -238,7 +239,7 @@ namespace CryptoExchange.Net.Clients
                     additionalHeaders);
                 _logger.RestApiSendRequest(request.RequestId, definition, request.Content, string.IsNullOrEmpty(request.Uri.Query) ? "-" : request.Uri.Query, string.Join(", ", request.GetHeaders().Select(h => h.Key + $"=[{string.Join(",", h.Value)}]")));
                 TotalRequestsMade++;
-                var result = await GetResponseAsync<T>(request, definition.RateLimitGate, cancellationToken).ConfigureAwait(false);
+                var result = await GetResponseAsync<T>(definition, request, definition.RateLimitGate, cancellationToken).ConfigureAwait(false);
                 if (result.Error is not CancellationRequestedError)
                 {
                     var originalData = OutputOriginalData ? result.OriginalData : "[Data only available when OutputOriginal = true]";
@@ -363,74 +364,58 @@ namespace CryptoExchange.Net.Clients
             ParameterCollection? bodyParameters,
             Dictionary<string, string>? additionalHeaders)
         {
-            var uriParams = uriParameters == null ? null : CreateParameterDictionary(uriParameters);
-            var bodyParams = bodyParameters == null ? null : CreateParameterDictionary(bodyParameters);
+            var requestConfiguration = new RestRequestConfiguration(
+                definition,
+                baseAddress,
+                uriParameters == null ? new Dictionary<string, object>() : CreateParameterDictionary(uriParameters),
+                bodyParameters == null ? new Dictionary<string, object>() : CreateParameterDictionary(bodyParameters),
+                new Dictionary<string, string>(additionalHeaders ?? []),
+                definition.ArraySerialization ?? ArraySerialization,
+                definition.ParameterPosition ?? ParameterPositions[definition.Method],
+                definition.RequestBodyFormat ?? RequestBodyFormat);
 
-            var uri = new Uri(baseAddress.AppendPath(definition.Path));
-            var arraySerialization = definition.ArraySerialization ?? ArraySerialization;
-            var bodyFormat = definition.RequestBodyFormat ?? RequestBodyFormat;
-            var parameterPosition = definition.ParameterPosition ?? ParameterPositions[definition.Method];
-
-            Dictionary<string, string>? headers = null;
-            if (AuthenticationProvider != null)
+            try
             {
-                try
-                {
-                    AuthenticationProvider.AuthenticateRequest(
-                        this,
-                        uri,
-                        definition.Method,
-                        ref uriParams,
-                        ref bodyParams,
-                        ref headers,
-                        definition.Authenticated,
-                        arraySerialization,
-                        parameterPosition,
-                        bodyFormat                        
-                        );
-                }
-                catch (Exception ex)
-                {
-                    throw new Exception("Failed to authenticate request, make sure your API credentials are correct", ex);
-                }
+                AuthenticationProvider?.ProcessRequest(this, requestConfiguration);
             }
+            catch (Exception ex)
+            {
+                throw new Exception("Failed to authenticate request, make sure your API credentials are correct", ex);
+            }
+            
+            var queryString = requestConfiguration.GetQueryString(true);
+            if (!string.IsNullOrEmpty(queryString) && !queryString.StartsWith("?"))
+                queryString = $"?{queryString}";
 
-            // Add the auth parameters to the uri, start with a new URI to be able to sort the parameters including the auth parameters
-            if (uriParams != null)
-                uri = uri.SetParameters(uriParams, arraySerialization);
-
-            var request = RequestFactory.Create(definition.Method, uri, requestId);
+            var uri = new Uri(baseAddress.AppendPath(definition.Path) + queryString);
+            var request = RequestFactory.Create(ClientOptions.HttpVersion, definition.Method, uri, requestId);
             request.Accept = Constants.JsonContentHeader;
 
-            if (headers != null)
-            {
-                foreach (var header in headers)
-                    request.AddHeader(header.Key, header.Value);
-            }
+            foreach (var header in requestConfiguration.Headers)
+                request.AddHeader(header.Key, header.Value);            
 
-            if (additionalHeaders != null)
+            foreach (var header in StandardRequestHeaders)
             {
-                foreach (var header in additionalHeaders)
+                // Only add it if it isn't overwritten
+                if (!requestConfiguration.Headers.ContainsKey(header.Key))
                     request.AddHeader(header.Key, header.Value);
-            }
+            }            
 
-            if (StandardRequestHeaders != null)
+            if (requestConfiguration.ParameterPosition == HttpMethodParameterPosition.InBody)
             {
-                foreach (var header in StandardRequestHeaders)
+                var contentType = requestConfiguration.BodyFormat == RequestBodyFormat.Json ? Constants.JsonContentHeader : Constants.FormContentHeader;
+                var bodyContent = requestConfiguration.GetBodyContent();
+                if (bodyContent != null)
                 {
-                    // Only add it if it isn't overwritten
-                    if (additionalHeaders?.ContainsKey(header.Key) != true)
-                        request.AddHeader(header.Key, header.Value);
+                    request.SetContent(bodyContent, contentType);
                 }
-            }
-
-            if (parameterPosition == HttpMethodParameterPosition.InBody)
-            {
-                var contentType = bodyFormat == RequestBodyFormat.Json ? Constants.JsonContentHeader : Constants.FormContentHeader;
-                if (bodyParams != null && bodyParams.Count != 0)
-                    WriteParamBody(request, bodyParams, contentType);
                 else
-                    request.SetContent(RequestBodyEmptyContent, contentType);
+                {
+                    if (requestConfiguration.BodyParameters != null && requestConfiguration.BodyParameters.Count != 0)
+                        WriteParamBody(request, requestConfiguration.BodyParameters, contentType);
+                    else
+                        request.SetContent(RequestBodyEmptyContent, contentType);
+                }
             }
 
             return request;
@@ -439,11 +424,13 @@ namespace CryptoExchange.Net.Clients
         /// <summary>
         /// Executes the request and returns the result deserialized into the type parameter class
         /// </summary>
+        /// <param name="requestDefinition">The request definition</param>
         /// <param name="request">The request object to execute</param>
         /// <param name="gate">The ratelimit gate used</param>
         /// <param name="cancellationToken">Cancellation token</param>
         /// <returns></returns>
         protected virtual async Task<WebCallResult<T>> GetResponseAsync<T>(
+            RequestDefinition requestDefinition,
             IRequest request,
             IRateLimitGate? gate,
             CancellationToken cancellationToken)
@@ -456,14 +443,11 @@ namespace CryptoExchange.Net.Clients
             {
                 response = await request.GetResponseAsync(cancellationToken).ConfigureAwait(false);
                 sw.Stop();
-                var statusCode = response.StatusCode;
-                var headers = response.ResponseHeaders;
-                var responseLength = response.ContentLength;
                 responseStream = await response.GetResponseStreamAsync().ConfigureAwait(false);
                 var outputOriginalData = ApiOptions.OutputOriginalData ?? ClientOptions.OutputOriginalData;
 
                 accessor = CreateAccessor();
-                if (!response.IsSuccessStatusCode)
+                if (!response.IsSuccessStatusCode && !requestDefinition.TryParseOnNonSuccess)
                 {
                     // Error response
                     var readResult = await accessor.Read(responseStream, true).ConfigureAwait(false);
@@ -488,23 +472,22 @@ namespace CryptoExchange.Net.Clients
                     if (error.Code == null || error.Code == 0)
                         error.Code = (int)response.StatusCode;
 
-                    return new WebCallResult<T>(response.StatusCode, response.ResponseHeaders, sw.Elapsed, responseLength, OutputOriginalData ? accessor.GetOriginalString() : null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, error!);
+                    return new WebCallResult<T>(response.StatusCode, response.HttpVersion, response.ResponseHeaders, sw.Elapsed, response.ContentLength, OutputOriginalData ? accessor.GetOriginalString() : null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, error!);
                 }
 
                 var valid = await accessor.Read(responseStream, outputOriginalData).ConfigureAwait(false);
                 if (typeof(T) == typeof(object))
                     // Success status code and expected empty response, assume it's correct
-                    return new WebCallResult<T>(statusCode, headers, sw.Elapsed, 0, accessor.OriginalDataAvailable ? accessor.GetOriginalString() : "[Data only available when OutputOriginal = true in client options]", request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, null);
+                    return new WebCallResult<T>(response.StatusCode, response.HttpVersion, response.ResponseHeaders, sw.Elapsed, 0, accessor.OriginalDataAvailable ? accessor.GetOriginalString() : "[Data only available when OutputOriginal = true in client options]", request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, null);
 
                 if (!valid)
                 {
                     // Invalid json
-                    var error = new DeserializeError("Failed to parse response: " + valid.Error!.Message, valid.Error.Exception);
-                    return new WebCallResult<T>(response.StatusCode, response.ResponseHeaders, sw.Elapsed, responseLength, OutputOriginalData ? accessor.GetOriginalString() : null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, error);
+                    return new WebCallResult<T>(response.StatusCode, response.HttpVersion, response.ResponseHeaders, sw.Elapsed, response.ContentLength, OutputOriginalData ? accessor.GetOriginalString() : null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, valid.Error);
                 }
 
                 // Json response received
-                var parsedError = TryParseError(response.ResponseHeaders, accessor);
+                var parsedError = TryParseError(requestDefinition, response.ResponseHeaders, accessor);
                 if (parsedError != null)
                 {
                     if (parsedError is ServerRateLimitError rateError)
@@ -517,30 +500,55 @@ namespace CryptoExchange.Net.Clients
                     }
 
                     // Success status code, but TryParseError determined it was an error response
-                    return new WebCallResult<T>(response.StatusCode, response.ResponseHeaders, sw.Elapsed, responseLength, OutputOriginalData ? accessor.GetOriginalString() : null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, parsedError);
+                    return new WebCallResult<T>(response.StatusCode, response.HttpVersion, response.ResponseHeaders, sw.Elapsed, response.ContentLength, OutputOriginalData ? accessor.GetOriginalString() : null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, parsedError);
                 }
 
                 var deserializeResult = accessor.Deserialize<T>();
-                return new WebCallResult<T>(response.StatusCode, response.ResponseHeaders, sw.Elapsed, responseLength, OutputOriginalData ? accessor.GetOriginalString() : null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, deserializeResult.Data, deserializeResult.Error);
+                return new WebCallResult<T>(response.StatusCode, response.HttpVersion, response.ResponseHeaders, sw.Elapsed, response.ContentLength, OutputOriginalData ? accessor.GetOriginalString() : null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, deserializeResult.Data, deserializeResult.Error);
             }
             catch (HttpRequestException requestException)
             {
                 // Request exception, can't reach server for instance
-                return new WebCallResult<T>(null, null, sw.Elapsed, null, null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, new WebError(requestException.Message, exception: requestException));
+                var error = new WebError(requestException.Message, requestException);
+                return new WebCallResult<T>(null, null, null, sw.Elapsed, null, null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, error);
             }
             catch (OperationCanceledException canceledException)
             {
                 if (cancellationToken != default && canceledException.CancellationToken == cancellationToken)
                 {
                     // Cancellation token canceled by caller
-                    return new WebCallResult<T>(null, null, sw.Elapsed, null, null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, new CancellationRequestedError(canceledException));
+                    return new WebCallResult<T>(null, null, null, sw.Elapsed, null, null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, new CancellationRequestedError(canceledException));
                 }
                 else
                 {
                     // Request timed out
-                    return new WebCallResult<T>(null, null, sw.Elapsed, null, null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, new WebError($"Request timed out", exception: canceledException));
+                    var error = new WebError($"Request timed out", exception: canceledException);
+                    error.ErrorType = ErrorType.Timeout;
+                    return new WebCallResult<T>(null, null, null, sw.Elapsed, null, null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, error);
                 }
             }
+            catch (ArgumentException argumentException)
+            {
+                if (argumentException.Message.StartsWith("Only HTTP/"))
+                {
+                    // Unsupported HTTP version error .net framework
+                    var error = ArgumentError.Invalid(nameof(RestExchangeOptions.HttpVersion), $"Invalid HTTP version {request.HttpVersion}: " + argumentException.Message);
+                    return new WebCallResult<T>(null, null, null, sw.Elapsed, null, null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, error);
+                }
+
+                throw;
+            }
+            catch (NotSupportedException notSupportedException)
+            {
+                if (notSupportedException.Message.StartsWith("Request version value must be one of"))
+                {
+                    // Unsupported HTTP version error dotnet code
+                    var error = ArgumentError.Invalid(nameof(RestExchangeOptions.HttpVersion), $"Invalid HTTP version {request.HttpVersion}: " + notSupportedException.Message);
+                    return new WebCallResult<T>(null, null, null, sw.Elapsed, null, null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, error);
+                }
+
+                throw;
+            }
             finally
             {
                 accessor?.Clear();
@@ -554,10 +562,11 @@ namespace CryptoExchange.Net.Clients
         /// This method will be called for each response to be able to check if the response is an error or not.
         /// If the response is an error this method should return the parsed error, else it should return null
         /// </summary>
+        /// <param name="requestDefinition">Request definition</param>
         /// <param name="accessor">Data accessor</param>
         /// <param name="responseHeaders">The response headers</param>
         /// <returns>Null if not an error, Error otherwise</returns>
-        protected virtual Error? TryParseError(KeyValuePair<string, string[]>[] responseHeaders, IMessageAccessor accessor) => null;
+        protected virtual Error? TryParseError(RequestDefinition requestDefinition, KeyValuePair<string, string[]>[] responseHeaders, IMessageAccessor accessor) => null;
 
         /// <summary>
         /// Can be used to indicate that a request should be retried. Defaults to false. Make sure to retry a max number of times (based on the the tries parameter) or the request will retry forever.
@@ -633,7 +642,7 @@ namespace CryptoExchange.Net.Clients
         /// <returns></returns>
         protected virtual Error ParseErrorResponse(int httpStatusCode, KeyValuePair<string, string[]>[] responseHeaders, IMessageAccessor accessor, Exception? exception)
         {
-            return new ServerError(null, "Unknown request error", exception);
+            return new ServerError(ErrorInfo.Unknown, exception);
         }
 
         /// <summary>
@@ -684,21 +693,21 @@ namespace CryptoExchange.Net.Clients
         {
             base.SetOptions(options);
 
-            RequestFactory.UpdateSettings(options.Proxy, options.RequestTimeout ?? ClientOptions.RequestTimeout);
+            RequestFactory.UpdateSettings(options.Proxy, options.RequestTimeout ?? ClientOptions.RequestTimeout, ClientOptions.HttpKeepAliveInterval);
         }
 
         internal async Task<WebCallResult<bool>> SyncTimeAsync()
         {
             var timeSyncParams = GetTimeSyncInfo();
             if (timeSyncParams == null)
-                return new WebCallResult<bool>(null, null, null, null, null, null, null, null, null, null, ResultDataSource.Server, true, null);
+                return new WebCallResult<bool>(null, null, null, null, null, null, null, null, null, null, null, ResultDataSource.Server, true, null);
 
             if (await timeSyncParams.TimeSyncState.Semaphore.WaitAsync(0).ConfigureAwait(false))
             {
                 if (!timeSyncParams.SyncTime || DateTime.UtcNow - timeSyncParams.TimeSyncState.LastSyncTime < timeSyncParams.RecalculationInterval)
                 {
                     timeSyncParams.TimeSyncState.Semaphore.Release();
-                    return new WebCallResult<bool>(null, null, null, null, null, null, null, null, null, null, ResultDataSource.Server, true, null);
+                    return new WebCallResult<bool>(null, null, null, null, null, null, null, null, null, null, null, ResultDataSource.Server, true, null);
                 }
 
                 var localTime = DateTime.UtcNow;
@@ -727,7 +736,7 @@ namespace CryptoExchange.Net.Clients
                 timeSyncParams.TimeSyncState.Semaphore.Release();
             }
 
-            return new WebCallResult<bool>(null, null, null, null, null, null, null, null, null, null, ResultDataSource.Server, true, null);
+            return new WebCallResult<bool>(null, null, null, null, null, null, null, null, null, null, null, ResultDataSource.Server, true, null);
         }
 
         private bool ShouldCache(RequestDefinition definition)

CryptoExchange.Net/Clients/SocketApiClient.cs

@@ -1,6 +1,7 @@
 using CryptoExchange.Net.Interfaces;
 using CryptoExchange.Net.Logging.Extensions;
 using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Errors;
 using CryptoExchange.Net.Objects.Options;
 using CryptoExchange.Net.Objects.Sockets;
 using CryptoExchange.Net.RateLimiting;
@@ -265,11 +266,11 @@ namespace CryptoExchange.Net.Clients
             if (socketConnection.PausedActivity)
             {
                 _logger.HasBeenPausedCantSubscribeAtThisMoment(socketConnection.SocketId);
-                return new CallResult<UpdateSubscription>(new ServerError("Socket is paused"));
+                return new CallResult<UpdateSubscription>(new ServerError(new ErrorInfo(ErrorType.WebsocketPaused, "Socket is paused")));
             }
 
             var waitEvent = new AsyncResetEvent(false);
-            var subQuery = subscription.GetSubQuery(socketConnection);
+            var subQuery = subscription.CreateSubscriptionQuery(socketConnection);
             if (subQuery != null)
             {
                 // Send the request and wait for answer
@@ -368,7 +369,7 @@ namespace CryptoExchange.Net.Clients
             if (socketConnection.PausedActivity)
             {
                 _logger.HasBeenPausedCantSendQueryAtThisMoment(socketConnection.SocketId);
-                return new CallResult<THandlerResponse>(new ServerError("Socket is paused"));
+                return new CallResult<THandlerResponse>(new ServerError(new ErrorInfo(ErrorType.WebsocketPaused, "Socket is paused")));
             }
 
             if (ct.IsCancellationRequested)

CryptoExchange.Net/Converters/SystemTextJson/SystemTextJsonMessageAccessor.cs

@@ -60,13 +60,12 @@ namespace CryptoExchange.Net.Converters.SystemTextJson
             }
             catch (JsonException ex)
             {
-                var info = $"Deserialize JsonException: {ex.Message}, Path: {ex.Path}, LineNumber: {ex.LineNumber}, LinePosition: {ex.BytePositionInLine}";
+                var info = $"Json deserialization failed: {ex.Message}, Path: {ex.Path}, LineNumber: {ex.LineNumber}, LinePosition: {ex.BytePositionInLine}";
                 return new CallResult<object>(new DeserializeError(info, ex));
             }
             catch (Exception ex)
             {
-                var info = $"Deserialize unknown Exception: {ex.Message}";
-                return new CallResult<object>(new DeserializeError(info, ex));
+                return new CallResult<object>(new DeserializeError($"Json deserialization failed: {ex.Message}", ex));
             }
         }
 
@@ -87,13 +86,12 @@ namespace CryptoExchange.Net.Converters.SystemTextJson
             }
             catch (JsonException ex)
             {
-                var info = $"Deserialize JsonException: {ex.Message}, Path: {ex.Path}, LineNumber: {ex.LineNumber}, LinePosition: {ex.BytePositionInLine}";
+                var info = $"Json deserialization failed: {ex.Message}, Path: {ex.Path}, LineNumber: {ex.LineNumber}, LinePosition: {ex.BytePositionInLine}";
                 return new CallResult<T>(new DeserializeError(info, ex));
             }
             catch (Exception ex)
             {
-                var info = $"Unknown exception: {ex.Message}";
-                return new CallResult<T>(new DeserializeError(info, ex));
+                return new CallResult<T>(new DeserializeError($"Json deserialization failed: {ex.Message}", ex));
             }
         }
 
@@ -286,7 +284,7 @@ namespace CryptoExchange.Net.Converters.SystemTextJson
             {
                 // Not a json message
                 IsValid = false;
-                return new CallResult(new DeserializeError("JsonError: " + ex.Message, ex));
+                return new CallResult(new DeserializeError($"Json deserialization failed: {ex.Message}", ex));
             }
         }
 
@@ -338,7 +336,7 @@ namespace CryptoExchange.Net.Converters.SystemTextJson
                 {
                     // Value doesn't start with `{` or `[`, prevent deserialization attempt as it's slow
                     IsValid = false;
-                    return new CallResult(new ServerError("Not a json value"));
+                    return new CallResult(new DeserializeError("Not a json value"));
                 }
 
                 _document = JsonDocument.Parse(data);
@@ -349,7 +347,7 @@ namespace CryptoExchange.Net.Converters.SystemTextJson
             {
                 // Not a json message
                 IsValid = false;
-                return new CallResult(new DeserializeError("JsonError: " + ex.Message, ex));
+                return new CallResult(new DeserializeError($"Json deserialization failed: {ex.Message}", ex));
             }
         }
 

CryptoExchange.Net/CryptoExchange.Net.csproj

@@ -6,9 +6,9 @@
     <PackageId>CryptoExchange.Net</PackageId>
     <Authors>JKorf</Authors>
     <Description>CryptoExchange.Net is a base library which is used to implement different cryptocurrency (exchange) API's. It provides a standardized way of implementing different API's, which results in a very similar experience for users of the API implementations.</Description>
-    <PackageVersion>9.4.0</PackageVersion>
-    <AssemblyVersion>9.4.0</AssemblyVersion>
-    <FileVersion>9.4.0</FileVersion>
+    <PackageVersion>9.7.0</PackageVersion>
+    <AssemblyVersion>9.7.0</AssemblyVersion>
+    <FileVersion>9.7.0</FileVersion>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
     <PackageTags>OKX;OKX.Net;Mexc;Mexc.Net;Kucoin;Kucoin.Net;Kraken;Kraken.Net;Huobi;Huobi.Net;CoinEx;CoinEx.Net;Bybit;Bybit.Net;Bitget;Bitget.Net;Bitfinex;Bitfinex.Net;Binance;Binance.Net;CryptoCurrency;CryptoCurrency Exchange;CryptoExchange.Net</PackageTags>
     <RepositoryType>git</RepositoryType>

CryptoExchange.Net/ExtensionMethods.cs

@@ -498,8 +498,8 @@ namespace CryptoExchange.Net
                 services.AddTransient(x => (IBookTickerSocketClient)client(x)!);
             if (typeof(IKlineSocketClient).IsAssignableFrom(typeof(T)))
                 services.AddTransient(x => (IKlineSocketClient)client(x)!);
-            if (typeof(IOrderBookRestClient).IsAssignableFrom(typeof(T)))
-                services.AddTransient(x => (IOrderBookRestClient)client(x)!);
+            if (typeof(IOrderBookSocketClient).IsAssignableFrom(typeof(T)))
+                services.AddTransient(x => (IOrderBookSocketClient)client(x)!);
             if (typeof(ITickerSocketClient).IsAssignableFrom(typeof(T)))
                 services.AddTransient(x => (ITickerSocketClient)client(x)!);
             if (typeof(ITickersSocketClient).IsAssignableFrom(typeof(T)))

CryptoExchange.Net/Interfaces/IRequest.cs

@@ -28,6 +28,10 @@ namespace CryptoExchange.Net.Interfaces
         /// </summary>
         Uri Uri { get; }
         /// <summary>
+        /// HTTP protocol version
+        /// </summary>
+        Version HttpVersion { get; }
+        /// <summary>
         /// internal request id for tracing
         /// </summary>
         int RequestId { get; }

CryptoExchange.Net/Interfaces/IRequestFactory.cs

@@ -1,4 +1,5 @@
 using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Options;
 using System;
 using System.Net.Http;
 
@@ -12,25 +13,21 @@ namespace CryptoExchange.Net.Interfaces
         /// <summary>
         /// Create a request for an uri
         /// </summary>
-        /// <param name="method"></param>
-        /// <param name="uri"></param>
-        /// <param name="requestId"></param>
-        /// <returns></returns>
-        IRequest Create(HttpMethod method, Uri uri, int requestId);
+        IRequest Create(Version httpRequestVersion, HttpMethod method, Uri uri, int requestId);
 
         /// <summary>
         /// Configure the requests created by this factory
         /// </summary>
-        /// <param name="requestTimeout">Request timeout to use</param>
+        /// <param name="options">Rest client options</param>
         /// <param name="httpClient">Optional shared http client instance</param>
-        /// <param name="proxy">Optional proxy to use when no http client is provided</param>
-        void Configure(ApiProxy? proxy, TimeSpan requestTimeout, HttpClient? httpClient = null);
+        void Configure(RestExchangeOptions options, HttpClient? httpClient = null);
 
         /// <summary>
         /// Update settings
         /// </summary>
         /// <param name="proxy">Proxy to use</param>
         /// <param name="requestTimeout">Request timeout to use</param>
-        void UpdateSettings(ApiProxy? proxy, TimeSpan requestTimeout);
+        /// <param name="httpKeepAliveInterval">Http client keep alive interval</param>
+        void UpdateSettings(ApiProxy? proxy, TimeSpan requestTimeout, TimeSpan? httpKeepAliveInterval);
     }
 }

CryptoExchange.Net/Interfaces/IResponse.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Net;
 using System.Threading.Tasks;
@@ -15,6 +16,11 @@ namespace CryptoExchange.Net.Interfaces
         /// </summary>
         HttpStatusCode StatusCode { get; }
 
+        /// <summary>
+        /// Http protocol version
+        /// </summary>
+        Version HttpVersion { get; }
+
         /// <summary>
         /// Whether the status code indicates a success status
         /// </summary>

CryptoExchange.Net/LibraryHelpers.cs

@@ -1,5 +1,8 @@
-using System;
+using CryptoExchange.Net.Objects;
+using System;
 using System.Collections.Generic;
+using System.Net;
+using System.Net.Http;
 using System.Text;
 
 namespace CryptoExchange.Net
@@ -43,5 +46,58 @@ namespace CryptoExchange.Net
 
             return clientOrderId;
         }
+
+        /// <summary>
+        /// Create a new HttpMessageHandler instance
+        /// </summary>  
+        public static HttpMessageHandler CreateHttpClientMessageHandler(ApiProxy? proxy, TimeSpan? keepAliveInterval)
+        {
+#if NET5_0_OR_GREATER
+            var socketHandler = new SocketsHttpHandler();
+            try
+            {
+                if (keepAliveInterval != null && keepAliveInterval != TimeSpan.Zero)
+                {
+                    socketHandler.KeepAlivePingPolicy = HttpKeepAlivePingPolicy.Always;
+                    socketHandler.KeepAlivePingDelay = keepAliveInterval.Value;
+                    socketHandler.KeepAlivePingTimeout = TimeSpan.FromSeconds(10);
+                }
+
+                socketHandler.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
+                socketHandler.DefaultProxyCredentials = CredentialCache.DefaultCredentials;
+            }
+            catch (PlatformNotSupportedException) { }
+            catch (NotImplementedException) { } // Mono runtime throws NotImplementedException
+
+            if (proxy != null)
+            {
+                socketHandler.Proxy = new WebProxy
+                {
+                    Address = new Uri($"{proxy.Host}:{proxy.Port}"),
+                    Credentials = proxy.Password == null ? null : new NetworkCredential(proxy.Login, proxy.Password)
+                };
+            }
+            return socketHandler;
+#else
+            var httpHandler = new HttpClientHandler();
+            try
+            {
+                httpHandler.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
+                httpHandler.DefaultProxyCredentials = CredentialCache.DefaultCredentials;
+            }
+            catch (PlatformNotSupportedException) { }
+            catch (NotImplementedException) { } // Mono runtime throws NotImplementedException
+
+            if (proxy != null)
+            {
+                httpHandler.Proxy = new WebProxy
+                {
+                    Address = new Uri($"{proxy.Host}:{proxy.Port}"),
+                    Credentials = proxy.Password == null ? null : new NetworkCredential(proxy.Login, proxy.Password)
+                };
+            }
+            return httpHandler;
+#endif
+        }
     }
 }

CryptoExchange.Net/Objects/CallResult.cs

@@ -205,6 +205,11 @@ namespace CryptoExchange.Net.Objects
         /// The request http method
         /// </summary>
         public HttpMethod? RequestMethod { get; set; }
+        
+        /// <summary>
+        /// HTTP protocol version
+        /// </summary>
+        public Version? HttpVersion { get; set; }
 
         /// <summary>
         /// The headers sent with the request
@@ -251,6 +256,7 @@ namespace CryptoExchange.Net.Objects
         /// </summary>
         public WebCallResult(
             HttpStatusCode? code,
+            Version? httpVersion,
             KeyValuePair<string, string[]>[]? responseHeaders,
             TimeSpan? responseTime,
             string? originalData,
@@ -262,6 +268,7 @@ namespace CryptoExchange.Net.Objects
             Error? error) : base(error)
         {
             ResponseStatusCode = code;
+            HttpVersion = httpVersion;
             ResponseHeaders = responseHeaders;
             ResponseTime = responseTime;
             RequestId = requestId;
@@ -286,7 +293,7 @@ namespace CryptoExchange.Net.Objects
         /// <returns></returns>
         public WebCallResult AsError(Error error)
         {
-            return new WebCallResult(ResponseStatusCode, ResponseHeaders, ResponseTime, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, error);
+            return new WebCallResult(ResponseStatusCode, HttpVersion, ResponseHeaders, ResponseTime, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, error);
         }
 
         /// <summary>
@@ -297,7 +304,7 @@ namespace CryptoExchange.Net.Objects
         /// <returns></returns>
         public WebCallResult<K> As<K>([AllowNull] K data)
         {
-            return new WebCallResult<K>(ResponseStatusCode, ResponseHeaders, ResponseTime, 0, null, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, ResultDataSource.Server, data, Error);
+            return new WebCallResult<K>(ResponseStatusCode, HttpVersion, ResponseHeaders, ResponseTime, 0, null, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, ResultDataSource.Server, data, Error);
         }
 
         /// <summary>
@@ -334,7 +341,7 @@ namespace CryptoExchange.Net.Objects
         /// <returns></returns>
         public WebCallResult<K> AsError<K>(Error error)
         {
-            return new WebCallResult<K>(ResponseStatusCode, ResponseHeaders, ResponseTime, 0, null, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, ResultDataSource.Server, default, error);
+            return new WebCallResult<K>(ResponseStatusCode, HttpVersion, ResponseHeaders, ResponseTime, 0, null, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, ResultDataSource.Server, default, error);
         }
 
         /// <inheritdoc />
@@ -355,6 +362,11 @@ namespace CryptoExchange.Net.Objects
         /// </summary>
         public HttpMethod? RequestMethod { get; set; }
 
+        /// <summary>
+        /// HTTP protocol version
+        /// </summary>
+        public Version? HttpVersion { get; set; }
+
         /// <summary>
         /// The headers sent with the request
         /// </summary>
@@ -403,21 +415,9 @@ namespace CryptoExchange.Net.Objects
         /// <summary>
         /// Create a new result
         /// </summary>
-        /// <param name="code"></param>
-        /// <param name="responseHeaders"></param>
-        /// <param name="responseTime"></param>
-        /// <param name="responseLength"></param>
-        /// <param name="originalData"></param>
-        /// <param name="requestId"></param>
-        /// <param name="requestUrl"></param>
-        /// <param name="requestBody"></param>
-        /// <param name="requestMethod"></param>
-        /// <param name="requestHeaders"></param>
-        /// <param name="dataSource"></param>
-        /// <param name="data"></param>
-        /// <param name="error"></param>
         public WebCallResult(
             HttpStatusCode? code,
+            Version? httpVersion,
             KeyValuePair<string, string[]>[]? responseHeaders,
             TimeSpan? responseTime,
             long? responseLength,
@@ -431,6 +431,7 @@ namespace CryptoExchange.Net.Objects
             [AllowNull] T data,
             Error? error) : base(data, originalData, error)
         {
+            HttpVersion = httpVersion;
             ResponseStatusCode = code;
             ResponseHeaders = responseHeaders;
             ResponseTime = responseTime;
@@ -450,7 +451,7 @@ namespace CryptoExchange.Net.Objects
         /// <returns></returns>
         public new WebCallResult AsDataless()
         {
-            return new WebCallResult(ResponseStatusCode, ResponseHeaders, ResponseTime, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, Error);
+            return new WebCallResult(ResponseStatusCode, HttpVersion, ResponseHeaders, ResponseTime, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, Error);
         }
         /// <summary>
         /// Copy as a dataless result
@@ -458,14 +459,14 @@ namespace CryptoExchange.Net.Objects
         /// <returns></returns>
         public new WebCallResult AsDatalessError(Error error)
         {
-            return new WebCallResult(ResponseStatusCode, ResponseHeaders, ResponseTime, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, error);
+            return new WebCallResult(ResponseStatusCode, HttpVersion, ResponseHeaders, ResponseTime, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, error);
         }
 
         /// <summary>
         /// Create a new error result
         /// </summary>
         /// <param name="error">The error</param>
-        public WebCallResult(Error? error) : this(null, null, null, null, null, null, null, null, null, null, ResultDataSource.Server, default, error) { }
+        public WebCallResult(Error? error) : this(null, null, null, null, null, null, null, null, null, null, null, ResultDataSource.Server, default, error) { }
 
         /// <summary>
         /// Copy the WebCallResult to a new data type
@@ -475,7 +476,7 @@ namespace CryptoExchange.Net.Objects
         /// <returns></returns>
         public new WebCallResult<K> As<K>([AllowNull] K data)
         {
-            return new WebCallResult<K>(ResponseStatusCode, ResponseHeaders, ResponseTime, ResponseLength, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, DataSource, data, Error);
+            return new WebCallResult<K>(ResponseStatusCode, HttpVersion, ResponseHeaders, ResponseTime, ResponseLength, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, DataSource, data, Error);
         }
 
         /// <summary>
@@ -486,7 +487,7 @@ namespace CryptoExchange.Net.Objects
         /// <returns></returns>
         public new WebCallResult<K> AsError<K>(Error error)
         {
-            return new WebCallResult<K>(ResponseStatusCode, ResponseHeaders, ResponseTime, ResponseLength, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, DataSource, default, error);
+            return new WebCallResult<K>(ResponseStatusCode, HttpVersion, ResponseHeaders, ResponseTime, ResponseLength, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, DataSource, default, error);
         }
 
         /// <summary>
@@ -498,7 +499,7 @@ namespace CryptoExchange.Net.Objects
         /// <returns></returns>
         public new WebCallResult<K> AsErrorWithData<K>(Error error, K data)
         {
-            return new WebCallResult<K>(ResponseStatusCode, ResponseHeaders, ResponseTime, ResponseLength, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, DataSource, data, error);
+            return new WebCallResult<K>(ResponseStatusCode, HttpVersion, ResponseHeaders, ResponseTime, ResponseLength, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, DataSource, data, error);
         }
 
         /// <summary>
@@ -569,7 +570,7 @@ namespace CryptoExchange.Net.Objects
         /// <returns></returns>
         internal WebCallResult<T> Cached()
         {
-            return new WebCallResult<T>(ResponseStatusCode, ResponseHeaders, ResponseTime, ResponseLength, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, ResultDataSource.Cache, Data, Error);
+            return new WebCallResult<T>(ResponseStatusCode, HttpVersion, ResponseHeaders, ResponseTime, ResponseLength, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, ResultDataSource.Cache, Data, Error);
         }
 
         /// <inheritdoc />

CryptoExchange.Net/Objects/Enums.cs

@@ -251,4 +251,20 @@ namespace CryptoExchange.Net.Objects
         /// </summary>
         DEX
     }
+
+    /// <summary>
+    /// Timeout behavior for queries
+    /// </summary>
+    public enum TimeoutBehavior
+    {
+        /// <summary>
+        /// Fail the request
+        /// </summary>
+        Fail,
+        /// <summary>
+        /// Mark the query as successful
+        /// </summary>
+        Succeed
+    }
+
 }

CryptoExchange.Net/Objects/Error.cs

@@ -1,4 +1,5 @@
-using System;
+using CryptoExchange.Net.Objects.Errors;
+using System;
 
 namespace CryptoExchange.Net.Objects
 {
@@ -7,15 +8,52 @@ namespace CryptoExchange.Net.Objects
     /// </summary>
     public abstract class Error
     {
+
+        private int? _code;
         /// <summary>
-        /// The error code from the server
+        /// The int error code the server returned; or the http status code int value if there was no error code.<br />
+        /// <br />
+        /// <i>Note:</i><br />
+        /// The <see cref="ErrorCode"/> property should be used for more generic error checking; it might contain a string error code if the server does not return an int code.
         /// </summary>
-        public int? Code { get; set; }
+        public int? Code 
+        { 
+            get
+            {
+                if (_code.HasValue)
+                    return _code;
+
+                return int.TryParse(ErrorCode, out var r) ? r : null;
+            }
+            set
+            {
+                _code = value;
+            }
+        }
 
         /// <summary>
-        /// The message for the error that occurred
+        /// The error code returned by the server
         /// </summary>
-        public string Message { get; set; }
+        public string? ErrorCode { get; set; }
+        /// <summary>
+        /// The error description
+        /// </summary>
+        public string? ErrorDescription { get; set; }
+
+        /// <summary>
+        /// Error type
+        /// </summary>
+        public ErrorType ErrorType { get; set; }
+
+        /// <summary>
+        /// Whether the error is transient and can be retried
+        /// </summary>
+        public bool IsTransient { get; set; }
+
+        /// <summary>
+        /// The server message for the error that occurred
+        /// </summary>
+        public string? Message { get; set; }
 
         /// <summary>
         /// Underlying exception
@@ -25,10 +63,13 @@ namespace CryptoExchange.Net.Objects
         /// <summary>
         /// ctor
         /// </summary>
-        protected Error (int? code, string message, Exception? exception)
+        protected Error(string? errorCode, ErrorInfo errorInfo, Exception? exception)
         {
-            Code = code;
-            Message = message;
+            ErrorCode = errorCode;
+            ErrorType = errorInfo.ErrorType;
+            Message = errorInfo.Message;
+            ErrorDescription = errorInfo.ErrorDescription;
+            IsTransient = errorInfo.IsTransient;
             Exception = exception;
         }
 
@@ -38,7 +79,7 @@ namespace CryptoExchange.Net.Objects
         /// <returns></returns>
         public override string ToString()
         {
-            return Code != null ? $"[{GetType().Name}] {Code}: {Message}" : $"[{GetType().Name}] {Message}";
+            return ErrorCode != null ? $"[{GetType().Name}.{ErrorType}] {ErrorCode}: {Message ?? ErrorDescription}" : $"[{GetType().Name}.{ErrorType}] {Message ?? ErrorDescription}";
         }
     }
 
@@ -48,19 +89,24 @@ namespace CryptoExchange.Net.Objects
     public class CantConnectError : Error
     {
         /// <summary>
-        /// ctor
+        /// Default error info
         /// </summary>
-        public CantConnectError() : base(null, "Can't connect to the server", null) { }
+        protected static readonly ErrorInfo _errorInfo = new ErrorInfo(ErrorType.UnableToConnect, false, "Can't connect to the server");
 
         /// <summary>
         /// ctor
         /// </summary>
-        public CantConnectError(Exception? exception) : base(null, "Can't connect to the server", exception) { }
+        public CantConnectError() : base(null, _errorInfo, null) { }
 
         /// <summary>
         /// ctor
         /// </summary>
-        protected CantConnectError(int? code, string message, Exception? exception) : base(code, message, exception) { }
+        public CantConnectError(Exception? exception) : base(null, _errorInfo, exception) { }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        protected CantConnectError(ErrorInfo info, Exception? exception) : base(null, info, exception) { }
     }
 
     /// <summary>
@@ -69,14 +115,19 @@ namespace CryptoExchange.Net.Objects
     public class NoApiCredentialsError : Error
     {
         /// <summary>
-        /// ctor
+        /// Default error info
         /// </summary>
-        public NoApiCredentialsError() : base(null, "No credentials provided for private endpoint", null) { }
+        protected static readonly ErrorInfo _errorInfo = new ErrorInfo(ErrorType.MissingCredentials, false, "No credentials provided for private endpoint");
 
         /// <summary>
         /// ctor
         /// </summary>
-        protected NoApiCredentialsError(int? code, string message, Exception? exception) : base(code, message, exception) { }
+        public NoApiCredentialsError() : base(null, _errorInfo, null) { }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        protected NoApiCredentialsError(ErrorInfo info, Exception? exception) : base(null, info, exception) { }
     }
 
     /// <summary>
@@ -87,12 +138,19 @@ namespace CryptoExchange.Net.Objects
         /// <summary>
         /// ctor
         /// </summary>
-        public ServerError(string message) : base(null, message, null) { }
+        public ServerError(ErrorInfo errorInfo, Exception? exception = null)
+             : base(null, errorInfo, exception) { }
 
         /// <summary>
         /// ctor
         /// </summary>
-        public ServerError(int? code, string message, Exception? exception = null) : base(code, message, exception) { }
+        public ServerError(int errorCode, ErrorInfo errorInfo, Exception? exception = null) 
+            : this(errorCode.ToString(), errorInfo, exception) { }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public ServerError(string errorCode, ErrorInfo errorInfo, Exception? exception = null) : base(errorCode, errorInfo, exception) { }
     }
 
     /// <summary>
@@ -101,14 +159,30 @@ namespace CryptoExchange.Net.Objects
     public class WebError : Error
     {
         /// <summary>
-        /// ctor
+        /// Default error info
         /// </summary>
-        public WebError(string message, Exception? exception = null) : base(null, message, exception) { }
+        protected static readonly ErrorInfo _errorInfo = new ErrorInfo(ErrorType.NetworkError, true, "Failed to complete the request to the server due to a network error");
 
         /// <summary>
         /// ctor
         /// </summary>
-        public WebError(int code, string message, Exception? exception = null) : base(code, message, exception) { }
+        public WebError(string? message = null, Exception? exception = null) : base(null, _errorInfo with { Message = (message?.Length > 0 ? _errorInfo.Message + ": " + message : _errorInfo.Message) }, exception) { }
+    }
+
+    /// <summary>
+    /// Timeout error waiting for a response from the server
+    /// </summary>
+    public class TimeoutError : Error
+    {
+        /// <summary>
+        /// Default error info
+        /// </summary>
+        protected static readonly ErrorInfo _errorInfo = new ErrorInfo(ErrorType.Timeout, false, "Failed to receive a response from the server in time");
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public TimeoutError(string? message = null, Exception? exception = null) : base(null, _errorInfo with { Message = (message?.Length > 0 ? _errorInfo.Message + ": " + message : _errorInfo.Message) }, exception) { }
     }
 
     /// <summary>
@@ -117,30 +191,14 @@ namespace CryptoExchange.Net.Objects
     public class DeserializeError : Error
     {
         /// <summary>
-        /// ctor
+        /// Default error info
         /// </summary>
-        public DeserializeError(string message, Exception? exception = null) : base(null, message, exception) { }
+        protected static readonly ErrorInfo _errorInfo = new ErrorInfo(ErrorType.DeserializationFailed, false, "Failed to deserialize data");
 
         /// <summary>
         /// ctor
         /// </summary>
-        protected DeserializeError(int? code, string message, Exception? exception = null) : base(code, message, exception) { }
-    }
-
-    /// <summary>
-    /// Unknown error
-    /// </summary>
-    public class UnknownError : Error
-    {
-        /// <summary>
-        /// ctor
-        /// </summary>
-        public UnknownError(string message, Exception? exception = null) : base(null, message, exception) { }
-
-        /// <summary>
-        /// ctor
-        /// </summary>
-        protected UnknownError(int? code, string message, Exception? exception = null): base(code, message, exception) { }
+        public DeserializeError(string? message = null, Exception? exception = null) : base(null, _errorInfo with { Message = (message?.Length > 0 ? _errorInfo.Message + ": " + message : _errorInfo.Message) }, exception) { }
     }
 
     /// <summary>
@@ -149,14 +207,28 @@ namespace CryptoExchange.Net.Objects
     public class ArgumentError : Error
     {
         /// <summary>
-        /// ctor
+        /// Default error info for missing parameter
         /// </summary>
-        public ArgumentError(string message) : base(null, "Invalid parameter: " + message, null) { }
+        protected static readonly ErrorInfo _missingInfo = new ErrorInfo(ErrorType.MissingParameter, false, "Missing parameter");
+        /// <summary>
+        /// Default error info for invalid parameter
+        /// </summary>
+        protected static readonly ErrorInfo _invalidInfo = new ErrorInfo(ErrorType.InvalidParameter, false, "Invalid parameter");
 
         /// <summary>
         /// ctor
         /// </summary>
-        protected ArgumentError(int? code, string message, Exception? exception = null) : base(code, message, exception) { }
+        public static ArgumentError Missing(string parameterName, string? message = null) => new ArgumentError(_missingInfo with { Message = message == null ? $"{_missingInfo.Message} '{parameterName}'" : $"{_missingInfo.Message} '{parameterName}': {message}" }, null);
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public static ArgumentError Invalid(string parameterName, string message) => new ArgumentError(_invalidInfo with { Message = $"{_invalidInfo.Message} '{parameterName}': {message}" }, null);
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        protected ArgumentError(ErrorInfo info, Exception? exception) : base(null, info, exception) { }
     }
 
     /// <summary>
@@ -172,7 +244,7 @@ namespace CryptoExchange.Net.Objects
         /// <summary>
         /// ctor
         /// </summary>
-        protected BaseRateLimitError(int? code, string message, Exception? exception) : base(code, message, exception) { }
+        protected BaseRateLimitError(ErrorInfo errorInfo, Exception? exception) : base(null, errorInfo, exception) { }
     }
 
     /// <summary>
@@ -181,15 +253,19 @@ namespace CryptoExchange.Net.Objects
     public class ClientRateLimitError : BaseRateLimitError
     {
         /// <summary>
-        /// ctor
+        /// Default error info
         /// </summary>
-        /// <param name="message"></param>
-        public ClientRateLimitError(string message) : base(null, "Client rate limit exceeded: " + message, null) { }
+        protected static readonly ErrorInfo _errorInfo = new ErrorInfo(ErrorType.RateLimitRequest, false, "Client rate limit exceeded");
 
         /// <summary>
         /// ctor
         /// </summary>
-        protected ClientRateLimitError(int? code, string message, Exception? exception = null) : base(code, message, exception) { }
+        public ClientRateLimitError(string? message = null, Exception? exception = null) : base(_errorInfo with { Message = (message?.Length > 0 ? _errorInfo.Message + ": " + message : _errorInfo.Message) }, exception) { }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        protected ClientRateLimitError(ErrorInfo info, Exception? exception) : base(info, exception) { }
     }
 
     /// <summary>
@@ -198,14 +274,19 @@ namespace CryptoExchange.Net.Objects
     public class ServerRateLimitError : BaseRateLimitError
     {
         /// <summary>
-        /// ctor
+        /// Default error info
         /// </summary>
-        public ServerRateLimitError(string? message = null, Exception? exception = null) : base(null, "Server rate limit exceeded" + (message?.Length > 0 ? " : " + message : null), exception) { }
+        protected static readonly ErrorInfo _errorInfo = new ErrorInfo(ErrorType.RateLimitRequest, false, "Server rate limit exceeded");
 
         /// <summary>
         /// ctor
         /// </summary>
-        protected ServerRateLimitError(int? code, string message, Exception? exception = null) : base(code, message, exception) { }
+        public ServerRateLimitError(string? message = null, Exception? exception = null) : base(_errorInfo with { Message = (message?.Length > 0 ? _errorInfo.Message + ": " + message : _errorInfo.Message) }, exception) { }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        protected ServerRateLimitError(ErrorInfo info, Exception? exception) : base(info, exception) { }
     }
 
     /// <summary>
@@ -214,14 +295,19 @@ namespace CryptoExchange.Net.Objects
     public class CancellationRequestedError : Error
     {
         /// <summary>
-        /// ctor
+        /// Default error info
         /// </summary>
-        public CancellationRequestedError(Exception? exception = null) : base(null, "Cancellation requested", exception) { }
+        protected static readonly ErrorInfo _errorInfo = new ErrorInfo(ErrorType.CancellationRequested, false, "Cancellation requested");
 
         /// <summary>
         /// ctor
         /// </summary>
-        public CancellationRequestedError(int? code, string message, Exception? exception = null) : base(code, message, exception) { }
+        public CancellationRequestedError(Exception? exception = null) : base(null, _errorInfo, null) { }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        protected CancellationRequestedError(ErrorInfo info, Exception? exception) : base(null, info, exception) { }
     }
 
     /// <summary>
@@ -230,13 +316,18 @@ namespace CryptoExchange.Net.Objects
     public class InvalidOperationError : Error
     {
         /// <summary>
-        /// ctor
+        /// Default error info
         /// </summary>
-        public InvalidOperationError(string message, Exception? exception = null) : base(null, message, exception) { }
+        protected static readonly ErrorInfo _errorInfo = new ErrorInfo(ErrorType.InvalidOperation, false, "Operation invalid");
 
         /// <summary>
         /// ctor
         /// </summary>
-        protected InvalidOperationError(int? code, string message, Exception? exception = null) : base(code, message, exception) { }
+        public InvalidOperationError(string message) : base(null, _errorInfo with { Message = message }, null) { }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        protected InvalidOperationError(ErrorInfo info, Exception? exception) : base(null, info, exception) { }
     }
 }

CryptoExchange.Net/Objects/Errors/ErrorEvaluator.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace CryptoExchange.Net.Objects.Errors
+{
+    /// <summary>
+    /// Error evaluator
+    /// </summary>
+    public class ErrorEvaluator
+    {
+        /// <summary>
+        /// Error code
+        /// </summary>
+        public string[] ErrorCodes { get; set; }
+
+        /// <summary>
+        /// Evaluation callback for determining the error type
+        /// </summary>
+        public Func<string, string?, ErrorInfo> ErrorTypeEvaluator { get; set; }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public ErrorEvaluator(string errorCode, Func<string, string?, ErrorInfo> errorTypeEvaluator)
+        {
+            ErrorCodes = [errorCode];
+            ErrorTypeEvaluator = errorTypeEvaluator;
+        }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public ErrorEvaluator(string[] errorCodes, Func<string, string?, ErrorInfo> errorTypeEvaluator)
+        {
+            ErrorCodes = errorCodes;
+            ErrorTypeEvaluator = errorTypeEvaluator;
+        }
+    }
+}

CryptoExchange.Net/Objects/Errors/ErrorInfo.cs

@@ -0,0 +1,58 @@
+using System;
+
+namespace CryptoExchange.Net.Objects.Errors
+{
+    /// <summary>
+    /// Error info
+    /// </summary>
+    public record ErrorInfo
+    {
+        /// <summary>
+        /// Unknown error info
+        /// </summary>
+        public static ErrorInfo Unknown { get; } = new ErrorInfo(ErrorType.Unknown, false, "Unknown error", []);
+
+        /// <summary>
+        /// The server error code
+        /// </summary>
+        public string[] ErrorCodes { get; set; }
+        /// <summary>
+        /// Error description
+        /// </summary>
+        public string? ErrorDescription { get; set; }
+        /// <summary>
+        /// The error type
+        /// </summary>
+        public ErrorType ErrorType { get; set; }
+        /// <summary>
+        /// Whether the error is transient and can be retried
+        /// </summary>
+        public bool IsTransient { get; set; }
+        /// <summary>
+        /// Server response message
+        /// </summary>
+        public string? Message { get; set; }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public ErrorInfo(ErrorType errorType, string description)
+        {
+            ErrorCodes = [];
+            ErrorType = errorType;
+            IsTransient = false;
+            ErrorDescription = description;
+        }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public ErrorInfo(ErrorType errorType, bool isTransient, string description, params string[] errorCodes)
+        {
+            ErrorCodes = errorCodes;
+            ErrorType = errorType;
+            IsTransient = isTransient;
+            ErrorDescription = description;
+        }
+    }
+}

CryptoExchange.Net/Objects/Errors/ErrorMapping.cs

@@ -0,0 +1,54 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace CryptoExchange.Net.Objects.Errors
+{
+    /// <summary>
+    /// Error mapping collection
+    /// </summary>
+    public class ErrorMapping
+    {
+        private Dictionary<string, ErrorEvaluator> _evaluators = new Dictionary<string, ErrorEvaluator>();
+        private Dictionary<string, ErrorInfo> _directMapping = new Dictionary<string, ErrorInfo>();
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public ErrorMapping(ErrorInfo[] errorMappings, ErrorEvaluator[]? errorTypeEvaluators = null)
+        {
+            foreach (var item in errorMappings)
+            {
+                if (!item.ErrorCodes.Any())
+                    throw new Exception("Error codes can't be null in error mapping");
+
+                foreach(var code in item.ErrorCodes!)
+                    _directMapping.Add(code, item);
+            }
+
+            if (errorTypeEvaluators == null)
+                return;
+
+            foreach (var item in errorTypeEvaluators)
+            {
+                foreach(var code in item.ErrorCodes)
+                    _evaluators.Add(code, item);
+            }
+        }
+
+        /// <summary>
+        /// Get error info for an error code
+        /// </summary>
+        public ErrorInfo GetErrorInfo(string code, string? message)
+        {
+            if (_directMapping.TryGetValue(code!, out var info))
+                return info with { Message = message };
+            
+            if (_evaluators.TryGetValue(code!, out var eva))
+                return eva.ErrorTypeEvaluator.Invoke(code!, message) with { Message = message };
+
+            return ErrorInfo.Unknown with { Message = message };
+        }
+    }
+}

CryptoExchange.Net/Objects/Errors/ErrorType.cs

@@ -0,0 +1,162 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace CryptoExchange.Net.Objects.Errors
+{
+    /// <summary>
+    /// Type of error
+    /// </summary>
+    public enum ErrorType
+    {
+        #region Library errors
+
+        /// <summary>
+        /// Failed to connect to server
+        /// </summary>
+        UnableToConnect,
+        /// <summary>
+        /// Failed to complete the request to the server
+        /// </summary>
+        NetworkError,
+        /// <summary>
+        /// No API credentials have been specified
+        /// </summary>
+        MissingCredentials,
+        /// <summary>
+        /// Invalid parameter value
+        /// </summary>
+        InvalidParameter,
+        /// <summary>
+        /// Missing parameter value
+        /// </summary>
+        MissingParameter,
+        /// <summary>
+        /// Cancellation requested by user
+        /// </summary>
+        CancellationRequested,
+        /// <summary>
+        /// Invalid operation requested
+        /// </summary>
+        InvalidOperation,
+        /// <summary>
+        /// Failed to deserialize data
+        /// </summary>
+        DeserializationFailed,
+        /// <summary>
+        /// Websocket is temporarily paused
+        /// </summary>
+        WebsocketPaused,
+        /// <summary>
+        /// Timeout while waiting for data from the order book subscription
+        /// </summary>
+        OrderBookTimeout,
+        /// <summary>
+        /// All orders failed for a multi-order operation
+        /// </summary>
+        AllOrdersFailed,
+        /// <summary>
+        /// Request timeout
+        /// </summary>
+        Timeout,
+
+        #endregion
+
+        #region Server errors
+
+        /// <summary>
+        /// Unknown error
+        /// </summary>
+        Unknown,
+        /// <summary>
+        /// Not authorized or insufficient permissions
+        /// </summary>
+        Unauthorized,
+        /// <summary>
+        /// Request rate limit error, too many requests 
+        /// </summary>
+        RateLimitRequest,
+        /// <summary>
+        /// Connection rate limit error, too many connections
+        /// </summary>
+        RateLimitConnection,
+        /// <summary>
+        /// Subscription rate limit error, too many subscriptions
+        /// </summary>
+        RateLimitSubscription,
+        /// <summary>
+        /// Order rate limit error, too many orders
+        /// </summary>
+        RateLimitOrder,
+        /// <summary>
+        /// Request timestamp invalid
+        /// </summary>
+        InvalidTimestamp,
+        /// <summary>
+        /// Unknown symbol
+        /// </summary>
+        UnknownSymbol,
+        /// <summary>
+        /// Unknown asset
+        /// </summary>
+        UnknownAsset,
+        /// <summary>
+        /// Unknown order
+        /// </summary>
+        UnknownOrder,
+        /// <summary>
+        /// Duplicate subscription
+        /// </summary>
+        DuplicateSubscription,
+        /// <summary>
+        /// Invalid quantity
+        /// </summary>
+        InvalidQuantity,
+        /// <summary>
+        /// Invalid price
+        /// </summary>
+        InvalidPrice,
+        /// <summary>
+        /// Parameter(s) for stop or tp/sl order invalid
+        /// </summary>
+        InvalidStopParameters,
+        /// <summary>
+        /// Not enough balance to execute request
+        /// </summary>
+        InsufficientBalance,
+        /// <summary>
+        /// Client order id already in use
+        /// </summary>
+        DuplicateClientOrderId,
+        /// <summary>
+        /// Symbol is not currently trading
+        /// </summary>
+        UnavailableSymbol,
+        /// <summary>
+        /// Order rejected due to order configuration such as order type or time in force restrictions
+        /// </summary>
+        RejectedOrderConfiguration,
+        /// <summary>
+        /// There is no open position
+        /// </summary>
+        NoPosition,
+        /// <summary>
+        /// Max position reached
+        /// </summary>
+        MaxPosition,
+        /// <summary>
+        /// Error in the internal system
+        /// </summary>
+        SystemError,
+        /// <summary>
+        /// The target object is not in the correct state for an operation
+        /// </summary>
+        IncorrectState,
+        /// <summary>
+        /// Risk management error
+        /// </summary>
+        RiskError
+
+        #endregion
+    }
+}

CryptoExchange.Net/Objects/Options/RestExchangeOptions.cs

@@ -1,5 +1,7 @@
 using CryptoExchange.Net.Authentication;
 using System;
+using System.Net;
+using System.Net.Http;
 
 namespace CryptoExchange.Net.Objects.Options
 {
@@ -28,6 +30,20 @@ namespace CryptoExchange.Net.Objects.Options
         /// </summary>
         public TimeSpan CachingMaxAge { get; set; } = TimeSpan.FromSeconds(5);
 
+        /// <summary>
+        /// The HTTP protocol version to use, typically 2.0 or 1.1
+        /// </summary>
+        public Version HttpVersion { get; set; }
+#if NET5_0_OR_GREATER
+            = new Version(2, 0);
+#else
+            = new Version(1, 1);
+#endif
+        /// <summary>
+        /// Http client keep alive interval for keeping connections open
+        /// </summary>
+        public TimeSpan? HttpKeepAliveInterval { get; set; } = TimeSpan.FromSeconds(15);
+
         /// <summary>
         /// Set the values of this options on the target options
         /// </summary>
@@ -43,6 +59,8 @@ namespace CryptoExchange.Net.Objects.Options
             item.RateLimitingBehaviour = RateLimitingBehaviour;
             item.CachingEnabled = CachingEnabled;
             item.CachingMaxAge = CachingMaxAge;
+            item.HttpVersion = HttpVersion;
+            item.HttpKeepAliveInterval = HttpKeepAliveInterval;
             return item;
         }
     }

CryptoExchange.Net/Objects/RequestDefinition.cs

@@ -62,6 +62,11 @@ namespace CryptoExchange.Net.Objects
         /// </summary>
         public bool PreventCaching { get; set; }
 
+        /// <summary>
+        /// Whether the response to this requests should attempted to be parsed even when the status indicates failure
+        /// </summary>
+        public bool TryParseOnNonSuccess { get; set; }
+
         /// <summary>
         /// Connection id
         /// </summary>
@@ -76,6 +81,9 @@ namespace CryptoExchange.Net.Objects
         {
             Path = path;
             Method = method;
+
+            if (!Path.StartsWith("/"))
+                Path = $"/{Path}";
         }
 
         /// <inheritdoc />

CryptoExchange.Net/Objects/RequestDefinitionCache.cs

@@ -46,6 +46,7 @@ namespace CryptoExchange.Net.Objects
         /// <param name="parameterPosition">Parameter position</param>
         /// <param name="arraySerialization">Array serialization type</param>
         /// <param name="preventCaching">Prevent request caching</param>
+        /// <param name="tryParseOnNonSuccess">Try parse the response even when status is not success</param>
         /// <returns></returns>
         public RequestDefinition GetOrCreate(
             HttpMethod method,
@@ -57,8 +58,9 @@ namespace CryptoExchange.Net.Objects
             RequestBodyFormat? requestBodyFormat = null,
             HttpMethodParameterPosition? parameterPosition = null,
             ArrayParametersSerialization? arraySerialization = null,
-            bool? preventCaching = null)
-            => GetOrCreate(method + path, method, path, rateLimitGate, weight, authenticated, limitGuard, requestBodyFormat, parameterPosition, arraySerialization, preventCaching);
+            bool? preventCaching = null,
+            bool? tryParseOnNonSuccess = null)
+            => GetOrCreate(method + path, method, path, rateLimitGate, weight, authenticated, limitGuard, requestBodyFormat, parameterPosition, arraySerialization, preventCaching, tryParseOnNonSuccess);
 
         /// <summary>
         /// Get a definition if it is already in the cache or create a new definition and add it to the cache
@@ -74,6 +76,7 @@ namespace CryptoExchange.Net.Objects
         /// <param name="parameterPosition">Parameter position</param>
         /// <param name="arraySerialization">Array serialization type</param>
         /// <param name="preventCaching">Prevent request caching</param>
+        /// <param name="tryParseOnNonSuccess">Try parse the response even when status is not success</param>
         /// <returns></returns>
         public RequestDefinition GetOrCreate(
             string identifier,
@@ -86,7 +89,8 @@ namespace CryptoExchange.Net.Objects
             RequestBodyFormat? requestBodyFormat = null,
             HttpMethodParameterPosition? parameterPosition = null,
             ArrayParametersSerialization? arraySerialization = null,
-            bool? preventCaching = null)
+            bool? preventCaching = null,
+            bool? tryParseOnNonSuccess = null)
         {
 
             if (!_definitions.TryGetValue(identifier, out var def))
@@ -100,7 +104,8 @@ namespace CryptoExchange.Net.Objects
                     ArraySerialization = arraySerialization,
                     RequestBodyFormat = requestBodyFormat,
                     ParameterPosition = parameterPosition,
-                    PreventCaching = preventCaching ?? false
+                    PreventCaching = preventCaching ?? false,
+                    TryParseOnNonSuccess = tryParseOnNonSuccess ?? false
                 };
                 _definitions.TryAdd(identifier, def);
             }

CryptoExchange.Net/Objects/RestRequestConfiguration.cs

@@ -0,0 +1,124 @@
+using System.Collections.Generic;
+using System.Net.Http;
+
+namespace CryptoExchange.Net.Objects
+{
+    /// <summary>
+    /// Rest request configuration
+    /// </summary>
+    public class RestRequestConfiguration
+    {
+        private string? _bodyContent;
+        private string? _queryString;
+
+        /// <summary>
+        /// Http method
+        /// </summary>
+        public HttpMethod Method { get; set; }
+        /// <summary>
+        /// Whether the request needs authentication
+        /// </summary>
+        public bool Authenticated { get; set; }
+        /// <summary>
+        /// Base address for the request
+        /// </summary>
+        public string BaseAddress { get; set; }
+        /// <summary>
+        /// The request path
+        /// </summary>
+        public string Path { get; set; }
+        /// <summary>
+        /// Query parameters
+        /// </summary>
+        public IDictionary<string, object> QueryParameters { get; set; }
+        /// <summary>
+        /// Body parameters
+        /// </summary>
+        public IDictionary<string, object> BodyParameters { get; set; }
+        /// <summary>
+        /// Request headers
+        /// </summary>
+        public IDictionary<string, string> Headers { get; set; }
+        /// <summary>
+        /// Array serialization type
+        /// </summary>
+        public ArrayParametersSerialization ArraySerialization { get; set; }
+        /// <summary>
+        /// Position of the parameters
+        /// </summary>
+        public HttpMethodParameterPosition ParameterPosition { get; set; }
+        /// <summary>
+        /// Body format
+        /// </summary>
+        public RequestBodyFormat BodyFormat { get; set; }
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public RestRequestConfiguration(
+            RequestDefinition requestDefinition,
+            string baseAddress,
+            IDictionary<string, object> queryParams,
+            IDictionary<string, object> bodyParams,
+            IDictionary<string, string> headers,
+            ArrayParametersSerialization arraySerialization,
+            HttpMethodParameterPosition parametersPosition,
+            RequestBodyFormat bodyFormat)
+        {
+            Method = requestDefinition.Method;
+            Authenticated = requestDefinition.Authenticated;
+            Path = requestDefinition.Path;
+            BaseAddress = baseAddress;
+            QueryParameters = queryParams;
+            BodyParameters = bodyParams;
+            Headers = headers;
+            ArraySerialization = arraySerialization;
+            ParameterPosition = parametersPosition;
+            BodyFormat = bodyFormat;
+        }
+
+        /// <summary>
+        /// Get the parameter collection based on the ParameterPosition
+        /// </summary>
+        public IDictionary<string, object> GetPositionParameters()
+        {
+            if (ParameterPosition == HttpMethodParameterPosition.InBody)
+                return BodyParameters;
+
+            return QueryParameters;
+        }
+
+        /// <summary>
+        /// Get the query string. If it's not previously set it will return a newly formatted query string. If previously set return that.
+        /// </summary>
+        /// <param name="urlEncode">Whether to URL encode the parameter string if creating new</param>
+        public string GetQueryString(bool urlEncode = true)
+        {
+            return _queryString ?? QueryParameters.CreateParamString(urlEncode, ArraySerialization);
+        }
+
+        /// <summary>
+        /// Set the query string of the request. Will be returned by subsequent <see cref="GetQueryString" /> calls
+        /// </summary>
+        public void SetQueryString(string value)
+        {
+            _queryString = value;
+        }
+
+        /// <summary>
+        /// Get the body content if it's previously set
+        /// </summary>
+        public string? GetBodyContent()
+        {
+            return _bodyContent;
+        }
+
+        /// <summary>
+        /// Set the body content for the request
+        /// </summary>
+        public void SetBodyContent(string content)
+        {
+            _bodyContent = content;
+        }
+    }
+}

CryptoExchange.Net/OrderBook/SymbolOrderBook.cs

@@ -9,6 +9,7 @@ using System.Threading.Tasks;
 using CryptoExchange.Net.Interfaces;
 using CryptoExchange.Net.Logging.Extensions;
 using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Errors;
 using CryptoExchange.Net.Objects.Options;
 using CryptoExchange.Net.Objects.Sockets;
 using Microsoft.Extensions.Logging;
@@ -549,7 +550,7 @@ namespace CryptoExchange.Net.OrderBook
                     return new CallResult<bool>(new CancellationRequestedError());
 
                 if (DateTime.UtcNow - startWait > timeout)
-                    return new CallResult<bool>(new ServerError("Timeout while waiting for data"));
+                    return new CallResult<bool>(new ServerError(new ErrorInfo(ErrorType.OrderBookTimeout, "Timeout while waiting for data")));
 
                 try
                 {

CryptoExchange.Net/Requests/Request.cs

@@ -50,6 +50,9 @@ namespace CryptoExchange.Net.Requests
         /// <inheritdoc />
         public Uri Uri => _request.RequestUri!;
 
+        /// <inheritdoc />
+        public Version HttpVersion => _request.Version!;
+
         /// <inheritdoc />
         public int RequestId { get; }
 
@@ -81,7 +84,9 @@ namespace CryptoExchange.Net.Requests
         /// <inheritdoc />
         public async Task<IResponse> GetResponseAsync(CancellationToken cancellationToken)
         {
-            return new Response(await _httpClient.SendAsync(_request, HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false));
+            var response = await _httpClient.SendAsync(_request, HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);
+            
+            return new Response(response);
         }
     }
 }

CryptoExchange.Net/Requests/RequestFactory.cs

@@ -3,6 +3,7 @@ using System.Net;
 using System.Net.Http;
 using CryptoExchange.Net.Interfaces;
 using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Options;
 
 namespace CryptoExchange.Net.Requests
 {
@@ -14,54 +15,43 @@ namespace CryptoExchange.Net.Requests
         private HttpClient? _httpClient;
 
         /// <inheritdoc />
-        public void Configure(ApiProxy? proxy, TimeSpan requestTimeout, HttpClient? client = null)
+        public void Configure(RestExchangeOptions options, HttpClient? client = null)
         {
             if (client == null)
-                client = CreateClient(proxy, requestTimeout);
+                client = CreateClient(options.Proxy, options.RequestTimeout, options.HttpKeepAliveInterval);
 
             _httpClient = client;
         }
 
         /// <inheritdoc />
-        public IRequest Create(HttpMethod method, Uri uri, int requestId)
+        public IRequest Create(Version httpRequestVersion, HttpMethod method, Uri uri, int requestId)
         {
             if (_httpClient == null)
                 throw new InvalidOperationException("Cant create request before configuring http client");
 
-            return new Request(new HttpRequestMessage(method, uri), _httpClient, requestId);
+            var requestMessage = new HttpRequestMessage(method, uri);
+            requestMessage.Version = httpRequestVersion;
+#if NET5_0_OR_GREATER
+            requestMessage.VersionPolicy = HttpVersionPolicy.RequestVersionOrLower;
+#endif
+            return new Request(requestMessage, _httpClient, requestId);
         }
 
         /// <inheritdoc />
-        public void UpdateSettings(ApiProxy? proxy, TimeSpan requestTimeout)
+        public void UpdateSettings(ApiProxy? proxy, TimeSpan requestTimeout, TimeSpan? httpKeepAliveInterval)
         {
-            _httpClient = CreateClient(proxy, requestTimeout);
+            _httpClient = CreateClient(proxy, requestTimeout, httpKeepAliveInterval);
         }
 
-        private static HttpClient CreateClient(ApiProxy? proxy, TimeSpan requestTimeout)
+        private static HttpClient CreateClient(ApiProxy? proxy, TimeSpan requestTimeout, TimeSpan? httpKeepAliveInterval)
         {
-            var handler = new HttpClientHandler();
-            try
-            {
-                handler.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
-                handler.DefaultProxyCredentials = CredentialCache.DefaultCredentials;
-            }
-            catch (PlatformNotSupportedException) { }
-            catch (NotImplementedException) { } // Mono runtime throws NotImplementedException
-
-            if (proxy != null)
-            {
-                handler.Proxy = new WebProxy
-                {
-                    Address = new Uri($"{proxy.Host}:{proxy.Port}"),
-                    Credentials = proxy.Password == null ? null : new NetworkCredential(proxy.Login, proxy.Password)
-                };
-            }
-
+            var handler = LibraryHelpers.CreateHttpClientMessageHandler(proxy, httpKeepAliveInterval);
             var client = new HttpClient(handler)
             {
-                Timeout = requestTimeout
+                Timeout = requestTimeout                
             };
             return client;
         }
+
     }
 }

CryptoExchange.Net/Requests/Response.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Net;
@@ -18,6 +19,9 @@ namespace CryptoExchange.Net.Requests
         /// <inheritdoc />
         public HttpStatusCode StatusCode => _response.StatusCode;
 
+        /// <inheritdoc />
+        public Version HttpVersion => _response.Version;
+
         /// <inheritdoc />
         public bool IsSuccessStatusCode => _response.IsSuccessStatusCode;
 

CryptoExchange.Net/SharedApis/Models/ExchangeWebResult.cs

@@ -48,6 +48,7 @@ namespace CryptoExchange.Net.SharedApis
             WebCallResult<T> result,
             INextPageToken? nextPageToken = null) :
             base(result.ResponseStatusCode,
+                result.HttpVersion,
                 result.ResponseHeaders,
                 result.ResponseTime,
                 result.ResponseLength,
@@ -75,6 +76,7 @@ namespace CryptoExchange.Net.SharedApis
             WebCallResult<T> result,
             INextPageToken? nextPageToken = null) :
             base(result.ResponseStatusCode,
+                result.HttpVersion,
                 result.ResponseHeaders,
                 result.ResponseTime,
                 result.ResponseLength,
@@ -100,6 +102,7 @@ namespace CryptoExchange.Net.SharedApis
             string exchange,
             TradingMode[]? dataTradeModes,
             HttpStatusCode? code,
+            Version? httpVersion,
             KeyValuePair<string, string[]>[]? responseHeaders,
             TimeSpan? responseTime,
             long? responseLength,
@@ -114,6 +117,7 @@ namespace CryptoExchange.Net.SharedApis
             Error? error,
             INextPageToken? nextPageToken = null) : base(
                 code,
+                httpVersion,
                 responseHeaders,
                 responseTime,
                 responseLength,
@@ -140,7 +144,7 @@ namespace CryptoExchange.Net.SharedApis
         /// <returns></returns>
         public new ExchangeWebResult<K> As<K>([AllowNull] K data)
         {
-            return new ExchangeWebResult<K>(Exchange, DataTradeMode, ResponseStatusCode, ResponseHeaders, ResponseTime, ResponseLength, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, DataSource, data, Error, NextPageToken);
+            return new ExchangeWebResult<K>(Exchange, DataTradeMode, ResponseStatusCode, HttpVersion, ResponseHeaders, ResponseTime, ResponseLength, OriginalData, RequestId, RequestUrl, RequestBody, RequestMethod, RequestHeaders, DataSource, data, Error, NextPageToken);
         }
 
         /// <inheritdoc />

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/EndpointOptions.cs

@@ -58,19 +58,19 @@ namespace CryptoExchange.Net.SharedApis
         public virtual Error? ValidateRequest(string exchange, ExchangeParameters? exchangeParameters, TradingMode? tradingMode, TradingMode[] supportedTradingModes)
         {
             if (tradingMode != null && !supportedTradingModes.Contains(tradingMode.Value))
-                return new ArgumentError($"ApiType.{tradingMode} is not supported, supported types: {string.Join(", ", supportedTradingModes)}");
+                return ArgumentError.Invalid("TradingMode", $"TradingMode.{tradingMode} is not supported, supported types: {string.Join(", ", supportedTradingModes)}");
 
             foreach (var param in RequiredExchangeParameters)
             {
                 if (!string.IsNullOrEmpty(param.Name))
                 {
                     if (ExchangeParameters.HasValue(exchangeParameters, exchange, param.Name!, param.ValueType) != true)
-                        return new ArgumentError($"Required exchange parameter `{param.Name}` for exchange `{exchange}` is missing or has incorrect type. Expected type is {param.ValueType.Name}. Example: {param.ExampleValue}");
+                        return ArgumentError.Invalid(param.Name!, $"Required exchange parameter `{param.Name}` for exchange `{exchange}` is missing or has incorrect type. Expected type is {param.ValueType.Name}. Example: {param.ExampleValue}");
                 }
                 else
                 {
                     if (param.Names!.All(x => ExchangeParameters.HasValue(exchangeParameters, exchange, x, param.ValueType) != true))
-                        return new ArgumentError($"One of exchange parameters `{string.Join(", ", param.Names!)}` for exchange `{exchange}` should be provided. Example: {param.ExampleValue}");
+                        return ArgumentError.Invalid(string.Join("/", param.Names!), $"One of exchange parameters `{string.Join(", ", param.Names!)}` for exchange `{exchange}` should be provided. Example: {param.ExampleValue}");
                 }
             }
 
@@ -140,12 +140,12 @@ namespace CryptoExchange.Net.SharedApis
                 if (!string.IsNullOrEmpty(param.Name))
                 {
                     if (typeof(T).GetProperty(param.Name)!.GetValue(request, null) == null)
-                        return new ArgumentError($"Required optional parameter `{param.Name}` for exchange `{exchange}` is missing. Example: {param.ExampleValue}");
+                        return ArgumentError.Invalid(param.Name!, $"Required optional parameter `{param.Name}` for exchange `{exchange}` is missing. Example: {param.ExampleValue}");
                 }
                 else
                 {
                     if (param.Names!.All(x => typeof(T).GetProperty(param.Name!)!.GetValue(request, null) == null))
-                        return new ArgumentError($"One of optional parameters `{string.Join(", ", param.Names!)}` for exchange `{exchange}` should be provided. Example: {param.ExampleValue}");
+                        return ArgumentError.Invalid(string.Join("/", param.Names!), $"One of optional parameters `{string.Join(", ", param.Names!)}` for exchange `{exchange}` should be provided. Example: {param.ExampleValue}");
                 }
 
             }
@@ -155,10 +155,10 @@ namespace CryptoExchange.Net.SharedApis
                 if (symbolsRequest.Symbols != null) 
                 {
                     if (!SupportsMultipleSymbols)
-                        return new ArgumentError($"Only a single symbol parameter is allowed, multiple symbols are not supported");
+                        return ArgumentError.Invalid(nameof(SharedSymbolRequest.Symbols), $"Only a single symbol parameter is allowed, multiple symbols are not supported");
 
                     if (symbolsRequest.Symbols.Length > MaxSymbolCount)
-                        return new ArgumentError($"Max number of symbols is {MaxSymbolCount} but {symbolsRequest.Symbols.Length} were passed");
+                        return ArgumentError.Invalid(nameof(SharedSymbolRequest.Symbols), $"Max number of symbols is {MaxSymbolCount} but {symbolsRequest.Symbols.Length} were passed");
                 }
 
             }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetClosedOrdersOptions.cs

@@ -25,7 +25,7 @@ namespace CryptoExchange.Net.SharedApis
         public override Error? ValidateRequest(string exchange, GetClosedOrdersRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
         {
             if (TimeFilterSupported && request.StartTime != null)
-                return new ArgumentError($"Time filter is not supported");
+                return ArgumentError.Invalid(nameof(GetClosedOrdersRequest.StartTime), $"Time filter is not supported");
 
             return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
         }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetDepositsOptions.cs

@@ -25,7 +25,7 @@ namespace CryptoExchange.Net.SharedApis
         public override Error? ValidateRequest(string exchange, GetDepositsRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
         {
             if (TimeFilterSupported && request.StartTime != null)
-                return new ArgumentError($"Time filter is not supported");
+                return ArgumentError.Invalid(nameof(GetDepositsRequest.StartTime), $"Time filter is not supported");
 
             return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
         }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetKlinesOptions.cs

@@ -67,23 +67,23 @@ namespace CryptoExchange.Net.SharedApis
         public override Error? ValidateRequest(string exchange, GetKlinesRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
         {
             if (!IsSupported(request.Interval))
-                return new ArgumentError("Interval not supported");
+                return ArgumentError.Invalid(nameof(GetKlinesRequest.Interval), "Interval not supported");
 
             if (MaxAge.HasValue && request.StartTime < DateTime.UtcNow.Add(-MaxAge.Value))
-                return new ArgumentError($"Only the most recent {MaxAge} klines are available");
+                return ArgumentError.Invalid(nameof(GetKlinesRequest.StartTime), $"Only the most recent {MaxAge} klines are available");
 
             if (request.Limit > MaxLimit)
-                return new ArgumentError($"Only {MaxLimit} klines can be retrieved per request");
+                return ArgumentError.Invalid(nameof(GetKlinesRequest.Limit), $"Only {MaxLimit} klines can be retrieved per request");
 
             if (MaxTotalDataPoints.HasValue)
             {
                 if (request.Limit > MaxTotalDataPoints.Value)
-                    return new ArgumentError($"Only the most recent {MaxTotalDataPoints} klines are available");
+                    return ArgumentError.Invalid(nameof(GetKlinesRequest.Limit), $"Only the most recent {MaxTotalDataPoints} klines are available");
 
                 if (request.StartTime.HasValue == true)
                 {
                     if (((request.EndTime ?? DateTime.UtcNow) - request.StartTime.Value).TotalSeconds / (int)request.Interval > MaxTotalDataPoints.Value)
-                        return new ArgumentError($"Only the most recent {MaxTotalDataPoints} klines are available, time filter failed");
+                        return ArgumentError.Invalid(nameof(GetKlinesRequest.StartTime), $"Only the most recent {MaxTotalDataPoints} klines are available, time filter failed");
                 }
             }
 

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetOrderBookOptions.cs

@@ -49,13 +49,13 @@ namespace CryptoExchange.Net.SharedApis
                 return null;
 
             if (MaxLimit.HasValue && request.Limit.Value > MaxLimit)
-                return new ArgumentError($"Max limit is {MaxLimit}");
+                return ArgumentError.Invalid(nameof(GetOrderBookRequest.Limit), $"Max limit is {MaxLimit}");
 
             if (MinLimit.HasValue && request.Limit.Value < MinLimit)
-                return new ArgumentError($"Min limit is {MaxLimit}");
+                return ArgumentError.Invalid(nameof(GetOrderBookRequest.Limit), $"Min limit is {MaxLimit}");
 
             if (SupportedLimits != null && !SupportedLimits.Contains(request.Limit.Value))
-                return new ArgumentError($"Limit should be one of " + string.Join(", ", SupportedLimits));
+                return ArgumentError.Invalid(nameof(GetOrderBookRequest.Limit), $"Limit should be one of " + string.Join(", ", SupportedLimits));
 
             return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
         }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetRecentTradesOptions.cs

@@ -25,7 +25,7 @@ namespace CryptoExchange.Net.SharedApis
         public Error? Validate(GetRecentTradesRequest request)
         {
             if (request.Limit > MaxLimit)
-                return new ArgumentError($"Only the most recent {MaxLimit} trades are available");
+                return ArgumentError.Invalid(nameof(GetRecentTradesRequest.Limit), $"Only the most recent {MaxLimit} trades are available");
 
             return null;
         }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetTradeHistoryOptions.cs

@@ -25,7 +25,7 @@ namespace CryptoExchange.Net.SharedApis
         public override Error? ValidateRequest(string exchange, GetTradeHistoryRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
         {
             if (MaxAge.HasValue && request.StartTime < DateTime.UtcNow.Add(-MaxAge.Value))
-                return new ArgumentError($"Only the most recent {MaxAge} trades are available");
+                return ArgumentError.Invalid(nameof(GetTradeHistoryRequest.StartTime), $"Only the most recent {MaxAge} trades are available");
 
             return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
         }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetWithdrawalsOptions.cs

@@ -25,7 +25,7 @@ namespace CryptoExchange.Net.SharedApis
         public override Error? ValidateRequest(string exchange, GetWithdrawalsRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
         {
             if (TimeFilterSupported && request.StartTime != null)
-                return new ArgumentError($"Time filter is not supported");
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.StartTime), $"Time filter is not supported");
 
             return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
         }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/PlaceFuturesOrderOptions.cs

@@ -36,16 +36,16 @@ namespace CryptoExchange.Net.SharedApis
             SharedQuantitySupport quantitySupport)
         {
             if (!SupportsTpSl && (request.StopLossPrice != null || request.TakeProfitPrice != null))
-                return new ArgumentError("Tp/Sl parameters not supported");
+                return ArgumentError.Invalid(nameof(PlaceFuturesOrderRequest.StopLossPrice) + " / " + nameof(PlaceFuturesOrderRequest.TakeProfitPrice), "Tp/Sl parameters not supported");
 
             if (request.OrderType == SharedOrderType.Other)
                 throw new ArgumentException("OrderType can't be `Other`", nameof(request.OrderType));
 
             if (!supportedOrderTypes.Contains(request.OrderType))
-                return new ArgumentError("Order type not supported");
+                return ArgumentError.Invalid(nameof(PlaceFuturesOrderRequest.OrderType), "Order type not supported");
 
             if (request.TimeInForce != null && !supportedTimeInForce.Contains(request.TimeInForce.Value))
-                return new ArgumentError("Order time in force not supported");
+                return ArgumentError.Invalid(nameof(PlaceFuturesOrderRequest.TimeInForce), "Order time in force not supported");
 
             var quantityError = quantitySupport.Validate(request.Side, request.OrderType, request.Quantity);
             if (quantityError != null)

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/PlaceSpotOrderOptions.cs

@@ -34,10 +34,10 @@ namespace CryptoExchange.Net.SharedApis
                 throw new ArgumentException("OrderType can't be `Other`", nameof(request.OrderType));
 
             if (!supportedOrderTypes.Contains(request.OrderType))
-                return new ArgumentError("Order type not supported");
+                return ArgumentError.Invalid(nameof(PlaceSpotOrderRequest.OrderType), "Order type not supported");
 
             if (request.TimeInForce != null && !supportedTimeInForce.Contains(request.TimeInForce.Value))
-                return new ArgumentError("Order time in force not supported");
+                return ArgumentError.Invalid(nameof(PlaceSpotOrderRequest.TimeInForce), "Order time in force not supported");
 
             var quantityError = quantitySupport.Validate(request.Side, request.OrderType, request.Quantity);
             if (quantityError != null)

CryptoExchange.Net/SharedApis/Models/Options/Subscriptions/SubscribeKlineOptions.cs

@@ -60,7 +60,7 @@ namespace CryptoExchange.Net.SharedApis
         public override Error? ValidateRequest(string exchange, SubscribeKlineRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
         {
             if (!IsSupported(request.Interval))
-                return new ArgumentError("Interval not supported");
+                return ArgumentError.Invalid(nameof(SubscribeKlineRequest.Interval), "Interval not supported");
 
             return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
         }

CryptoExchange.Net/SharedApis/Models/Options/Subscriptions/SubscribeOrderBookOptions.cs

@@ -29,7 +29,7 @@ namespace CryptoExchange.Net.SharedApis
         public override Error? ValidateRequest(string exchange, SubscribeOrderBookRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
         {
             if (request.Limit != null && !SupportedLimits.Contains(request.Limit.Value))
-                return new ArgumentError("Limit not supported");
+                return ArgumentError.Invalid(nameof(SubscribeOrderBookRequest.Limit), "Limit not supported");
 
             return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
         }

CryptoExchange.Net/SharedApis/Models/SharedQuantitySupport.cs

@@ -84,16 +84,16 @@ namespace CryptoExchange.Net.SharedApis
                 return null;
 
             if (supportedType == SharedQuantityType.BaseAndQuoteAsset && quantity != null && quantity.QuantityInBaseAsset == null && quantity.QuantityInQuoteAsset == null)
-                return new ArgumentError($"Quantity for {side}.{type} required in base or quote asset");
+                return ArgumentError.Invalid("Quantity", $"Quantity for {side}.{type} required in base or quote asset");
 
             if (supportedType == SharedQuantityType.QuoteAsset && quantity != null && quantity.QuantityInQuoteAsset == null)
-                return new ArgumentError($"Quantity for {side}.{type} required in quote asset");
+                return ArgumentError.Invalid("Quantity", $"Quantity for {side}.{type} required in quote asset");
 
             if (supportedType == SharedQuantityType.BaseAsset && quantity != null && quantity.QuantityInBaseAsset == null && quantity.QuantityInContracts == null)
-                return new ArgumentError($"Quantity for {side}.{type} required in base asset");
+                return ArgumentError.Invalid("Quantity", $"Quantity for {side}.{type} required in base asset");
 
             if (supportedType == SharedQuantityType.Contracts && quantity != null && quantity.QuantityInContracts == null)
-                return new ArgumentError($"Quantity for {side}.{type} required in contracts");
+                return ArgumentError.Invalid("Quantity", $"Quantity for {side}.{type} required in contracts");
 
             return null;
         }

CryptoExchange.Net/Sockets/CryptoExchangeWebSocketClient.cs

@@ -1,6 +1,7 @@
 using CryptoExchange.Net.Interfaces;
 using CryptoExchange.Net.Logging.Extensions;
 using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Errors;
 using CryptoExchange.Net.Objects.Sockets;
 using CryptoExchange.Net.RateLimiting;
 using Microsoft.Extensions.Logging;
@@ -252,6 +253,11 @@ namespace CryptoExchange.Net.Sockets
                         await (OnConnectRateLimited?.Invoke() ?? Task.CompletedTask).ConfigureAwait(false);
                         return new CallResult(new ServerRateLimitError(we.Message, we));
                     }
+
+                    if (_socket.HttpStatusCode == HttpStatusCode.Unauthorized)
+                    {
+                        return new CallResult(new ServerError(new ErrorInfo(ErrorType.Unauthorized, "Server returned status code `401` when `101` was expected")));
+                    }
 #else
                     // ClientWebSocket.HttpStatusCode is only available in .NET6+ https://learn.microsoft.com/en-us/dotnet/api/system.net.websockets.clientwebsocket.httpstatuscode?view=net-8.0
                     // Try to read 429 from the message instead

CryptoExchange.Net/Sockets/MessageMatcher.cs

@@ -47,7 +47,7 @@ namespace CryptoExchange.Net.Sockets
         /// </summary>
         public static MessageMatcher Create<T>(string value)
         {
-            return new MessageMatcher(new MessageHandlerLink<T>(MessageLinkType.Full, value, (con, msg) => CallResult.SuccessResult));
+            return new MessageMatcher(new MessageHandlerLink<T>(MessageLinkType.Full, value, (con, msg) => new CallResult<T>(default, msg.OriginalData, null)));
         }
 
         /// <summary>

CryptoExchange.Net/Sockets/Query.cs

@@ -29,6 +29,11 @@ namespace CryptoExchange.Net.Sockets
         /// </summary>
         public TimeSpan? RequestTimeout { get; set; }
 
+        /// <summary>
+        /// What should happen if the query times out
+        /// </summary>
+        public TimeoutBehavior TimeoutBehavior { get; set; } = TimeoutBehavior.Fail;
+
         /// <summary>
         /// The number of required responses. Can be more than 1 when for example subscribing multiple symbols streams in a single request,
         /// and each symbol receives it's own confirmation response
@@ -183,15 +188,12 @@ namespace CryptoExchange.Net.Sockets
         /// <inheritdoc />
         public override async Task<CallResult> Handle(SocketConnection connection, DataEvent<object> message, MessageHandlerLink check)
         {
-            if (!PreCheckMessage(message))
+            if (!PreCheckMessage(connection, message))
                 return CallResult.SuccessResult;
 
             CurrentResponses++;
-            if (CurrentResponses == RequiredResponses)
-            {
-                Completed = true;
+            if (CurrentResponses == RequiredResponses)            
                 Response = message.Data;
-            }
 
             if (Result?.Success != false)
                 // If an error result is already set don't override that
@@ -199,6 +201,7 @@ namespace CryptoExchange.Net.Sockets
 
             if (CurrentResponses == RequiredResponses)
             {
+                Completed = true;
                 _event.Set();
                 if (ContinueAwaiter != null)
                     await ContinueAwaiter.WaitAsync().ConfigureAwait(false);
@@ -210,18 +213,20 @@ namespace CryptoExchange.Net.Sockets
         /// <summary>
         /// Validate if a message is actually processable by this query
         /// </summary>
-        /// <param name="message"></param>
-        /// <returns></returns>
-        public virtual bool PreCheckMessage(DataEvent<object> message) => true;
+        public virtual bool PreCheckMessage(SocketConnection connection, DataEvent<object> message) => true;
 
         /// <inheritdoc />
         public override void Timeout()
         {
             if (Completed)
                 return;
-
+                        
             Completed = true;
-            Result = new CallResult<THandlerResponse>(new CancellationRequestedError(null, "Query timeout", null));
+            if (TimeoutBehavior == TimeoutBehavior.Fail)
+                Result = new CallResult<THandlerResponse>(new TimeoutError());
+            else
+                Result = new CallResult<THandlerResponse>(default, null, default);
+
             ContinueAwaiter?.Set();
             _event.Set();
         }

CryptoExchange.Net/Sockets/SocketConnection.cs

@@ -202,6 +202,18 @@ namespace CryptoExchange.Net.Sockets
             }
         }
 
+        /// <summary>
+        /// The number of current pending requests
+        /// </summary>
+        public int PendingRequests
+        {
+            get
+            {
+                lock (_listenersLock)
+                    return _listeners.OfType<Query>().Where(x => !x.Completed).Count();
+            }
+        }
+
         private bool _pausedActivity;
         private readonly object _listenersLock;
         private readonly List<IMessageProcessor> _listeners;
@@ -477,7 +489,7 @@ namespace CryptoExchange.Net.Sockets
 
                 if (!accessor.IsValid && !ApiClient.ProcessUnparsableMessages)
                 {
-                    _logger.FailedToParse(SocketId, result.Error!.Message);
+                    _logger.FailedToParse(SocketId, result.Error!.Message ?? result.Error!.ErrorDescription!);
                     return;
                 }
 
@@ -519,7 +531,10 @@ namespace CryptoExchange.Net.Sockets
                         {
                             // If this message is for this listener then it is automatically confirmed, even if the subscription is not (yet) confirmed
                             subscriptionProcessor.Confirmed = true;
-                            // This doesn't trigger a waiting subscribe query, should probably also somehow set the wait event for that
+                            if (subscriptionProcessor.SubscriptionQuery?.TimeoutBehavior == TimeoutBehavior.Succeed)
+                                // If this subscription has a query waiting for a timeout (success if there is no error response)
+                                // then time it out now as the data is being received, so we assume it's successful
+                                subscriptionProcessor.SubscriptionQuery.Timeout();
                         }
 
                         // 5. Deserialize the message
@@ -765,7 +780,7 @@ namespace CryptoExchange.Net.Sockets
         public virtual async Task<CallResult> SendAndWaitQueryAsync(Query query, AsyncResetEvent? continueEvent = null, CancellationToken ct = default)
         {
             await SendAndWaitIntAsync(query, continueEvent, ct).ConfigureAwait(false);
-            return query.Result ?? new CallResult(new ServerError("Timeout"));
+            return query.Result ?? new CallResult(new TimeoutError());
         }
 
         /// <summary>
@@ -779,7 +794,7 @@ namespace CryptoExchange.Net.Sockets
         public virtual async Task<CallResult<THandlerResponse>> SendAndWaitQueryAsync<THandlerResponse>(Query<THandlerResponse> query, AsyncResetEvent? continueEvent = null, CancellationToken ct = default)
         {
             await SendAndWaitIntAsync(query, continueEvent, ct).ConfigureAwait(false);
-            return query.TypedResult ?? new CallResult<THandlerResponse>(new ServerError("Timeout"));
+            return query.TypedResult ?? new CallResult<THandlerResponse>(new TimeoutError());
         }
 
         private async Task SendAndWaitIntAsync(Query query, AsyncResetEvent? continueEvent, CancellationToken ct = default)
@@ -996,7 +1011,7 @@ namespace CryptoExchange.Net.Sockets
                         return result;
                     }
 
-                    var subQuery = subscription.GetSubQuery(this);
+                    var subQuery = subscription.CreateSubscriptionQuery(this);
                     if (subQuery == null)
                     {
                         subscription.IsResubscribing = false;
@@ -1031,7 +1046,7 @@ namespace CryptoExchange.Net.Sockets
 
         internal async Task UnsubscribeAsync(Subscription subscription)
         {
-            var unsubscribeRequest = subscription.GetUnsubQuery();
+            var unsubscribeRequest = subscription.CreateUnsubscriptionQuery(this);
             if (unsubscribeRequest == null)
                 return;
 
@@ -1044,7 +1059,7 @@ namespace CryptoExchange.Net.Sockets
             if (!_socket.IsOpen)
                 return new CallResult(new WebError("Socket is not connected"));
 
-            var subQuery = subscription.GetSubQuery(this);
+            var subQuery = subscription.CreateSubscriptionQuery(this);
             if (subQuery == null)
                 return CallResult.SuccessResult;
 

CryptoExchange.Net/Sockets/Subscription.cs

@@ -80,6 +80,16 @@ namespace CryptoExchange.Net.Sockets
         /// </summary>
         public string? Topic { get; set; }
 
+        /// <summary>
+        /// The subscribe query for this subscription
+        /// </summary>
+        public Query? SubscriptionQuery { get; private set; }
+
+        /// <summary>
+        /// The unsubscribe query for this subscription
+        /// </summary>
+        public Query? UnsubscriptionQuery { get; private set; }
+
         /// <summary>
         /// ctor
         /// </summary>
@@ -91,11 +101,21 @@ namespace CryptoExchange.Net.Sockets
             Id = ExchangeHelpers.NextId();
         }
 
+        /// <summary>
+        /// Create a new subscription query
+        /// </summary>
+        public Query? CreateSubscriptionQuery(SocketConnection connection)
+        {
+            var query = GetSubQuery(connection);
+            SubscriptionQuery = query;
+            return query;
+        }
+
         /// <summary>
         /// Get the subscribe query to send when subscribing
         /// </summary>
         /// <returns></returns>
-        public abstract Query? GetSubQuery(SocketConnection connection);
+        protected abstract Query? GetSubQuery(SocketConnection connection);
 
         /// <summary>
         /// Handle a subscription query response
@@ -109,11 +129,21 @@ namespace CryptoExchange.Net.Sockets
         /// <param name="message"></param>
         public virtual void HandleUnsubQueryResponse(object message) { }
 
+        /// <summary>
+        /// Create a new unsubscription query
+        /// </summary>
+        public Query? CreateUnsubscriptionQuery(SocketConnection connection)
+        {
+            var query = GetUnsubQuery(connection);
+            UnsubscriptionQuery = query;
+            return query;
+        }
+
         /// <summary>
         /// Get the unsubscribe query to send when unsubscribing
         /// </summary>
         /// <returns></returns>
-        public abstract Query? GetUnsubQuery();
+        protected abstract Query? GetUnsubQuery(SocketConnection connection);
 
         /// <inheritdoc />
         public virtual CallResult<object> Deserialize(IMessageAccessor message, Type type) => message.Deserialize(type);

CryptoExchange.Net/Sockets/SystemSubscription.cs

@@ -22,9 +22,9 @@ namespace CryptoExchange.Net.Sockets
         }
 
         /// <inheritdoc />
-        public override Query? GetSubQuery(SocketConnection connection) => null;
+        protected override Query? GetSubQuery(SocketConnection connection) => null;
 
         /// <inheritdoc />
-        public override Query? GetUnsubQuery() => null;
+        protected override Query? GetUnsubQuery(SocketConnection connection) => null;
     }
 }

CryptoExchange.Net/Testing/Implementations/TestRequest.cs

@@ -21,6 +21,8 @@ namespace CryptoExchange.Net.Testing.Implementations
 
         public Uri Uri { get; set; }
 
+        public Version HttpVersion { get; set; }
+
         public int RequestId { get; set; }
 
 #pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.

CryptoExchange.Net/Testing/Implementations/TestRequestFactory.cs

@@ -1,5 +1,6 @@
 using CryptoExchange.Net.Interfaces;
 using CryptoExchange.Net.Objects;
+using CryptoExchange.Net.Objects.Options;
 using System;
 using System.Net.Http;
 
@@ -14,11 +15,11 @@ namespace CryptoExchange.Net.Testing.Implementations
             _request = request;
         }
 
-        public void Configure(ApiProxy? proxy, TimeSpan requestTimeout, HttpClient? httpClient = null)
-        {
+        public void Configure(RestExchangeOptions options, HttpClient? client)
+        { 
         }
 
-        public IRequest Create(HttpMethod method, Uri uri, int requestId)
+        public IRequest Create(Version httpRequestVersion, HttpMethod method, Uri uri, int requestId)
         {
             _request.Method = method;
             _request.Uri = uri;
@@ -26,6 +27,6 @@ namespace CryptoExchange.Net.Testing.Implementations
             return _request;
         }
 
-        public void UpdateSettings(ApiProxy? proxy, TimeSpan requestTimeout) {}
+        public void UpdateSettings(ApiProxy? proxy, TimeSpan requestTimeout, TimeSpan? httpKeepAliveInterval) {}
     }
 }

CryptoExchange.Net/Testing/Implementations/TestResponse.cs

@@ -1,4 +1,5 @@
 using CryptoExchange.Net.Interfaces;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Net;
@@ -11,6 +12,7 @@ namespace CryptoExchange.Net.Testing.Implementations
         private readonly Stream _response;
 
         public HttpStatusCode StatusCode { get; }
+        public Version HttpVersion { get; }
 
         public bool IsSuccessStatusCode { get; }
 
@@ -21,6 +23,7 @@ namespace CryptoExchange.Net.Testing.Implementations
         public TestResponse(HttpStatusCode code, Stream response)
         {
             StatusCode = code;
+            HttpVersion = new Version(2, 0);
             IsSuccessStatusCode = code == HttpStatusCode.OK;
             _response = response;
         }

CryptoExchange.Net/Testing/TestHelpers.cs

@@ -128,23 +128,27 @@ namespace CryptoExchange.Net.Testing
             var uriParams = client.ParameterPositions[method] == HttpMethodParameterPosition.InUri ? client.CreateParameterDictionary(parameters) : null;
             var bodyParams = client.ParameterPositions[method] == HttpMethodParameterPosition.InBody ? client.CreateParameterDictionary(parameters) : null;
 
-            var headers = new Dictionary<string, string>();
+            var requestDefinition = new RestRequestConfiguration(
+                    new RequestDefinition(path, method)
+                    {
+                        Authenticated = true
+                    },
+                    host,
+                    uriParams ?? new Dictionary<string, object>(),
+                    bodyParams ?? new Dictionary<string, object>(),
+                    new Dictionary<string, string>(),
+                    client.ArraySerialization,
+                    client.ParameterPositions[method],
+                    client.RequestBodyFormat
+                    );
 
             authProvider.TimeProvider = new TestAuthTimeProvider(time ?? new DateTime(2024, 01, 01, 0, 0, 0, DateTimeKind.Utc));
-            authProvider.AuthenticateRequest(
-                client, 
-                new Uri(host.AppendPath(path)), 
-                method,
-                ref uriParams,
-                ref bodyParams,
-                ref headers,
-                true,
-                client.ArraySerialization, 
-                client.ParameterPositions[method],
-                client.RequestBodyFormat
+            authProvider.ProcessRequest(
+                client,
+                requestDefinition
                 );
 
-            var signature = getSignature(uriParams, bodyParams, headers);
+            var signature = getSignature(requestDefinition.QueryParameters, requestDefinition.BodyParameters, requestDefinition.Headers);
 
             if (!string.Equals(signature, expectedSignature, compareCase ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase))
                 throw new Exception($"Signatures do not match. Expected: {expectedSignature}, Actual: {signature}");

CryptoExchange.Net/Trackers/Klines/KlineTracker.cs

@@ -184,7 +184,7 @@ namespace CryptoExchange.Net.Trackers.Klines
 
             if (!subResult)
             {
-                _logger.KlineTrackerStartFailed(SymbolName, subResult.Error!.Message, subResult.Error.Exception);
+                _logger.KlineTrackerStartFailed(SymbolName, subResult.Error!.Message ?? subResult.Error!.ErrorDescription!, subResult.Error.Exception);
                 Status = SyncStatus.Disconnected;
                 return subResult;
             }

CryptoExchange.Net/Trackers/Trades/TradeTracker.cs

@@ -207,7 +207,7 @@ namespace CryptoExchange.Net.Trackers.Trades
 
             if (!subResult)
             {
-                _logger.TradeTrackerStartFailed(SymbolName, subResult.Error!.Message, subResult.Error.Exception);
+                _logger.TradeTrackerStartFailed(SymbolName, subResult.Error!.Message ?? subResult.Error!.ErrorDescription!, subResult.Error.Exception);
                 Status = SyncStatus.Disconnected;
                 return subResult;
             }

Examples/BlazorClient/App.razor

@@ -1,4 +1,4 @@
-<Router AppAssembly="@typeof(Program).Assembly" PreferExactMatches="@true">
+<Router AppAssembly="@typeof(Program).Assembly">
     <Found Context="routeData">
         <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
     </Found>

README.md

@@ -38,6 +38,10 @@ Full list of all libraries part of the CryptoExchange.Net ecosystem. Consider us
 
 Any of these can be installed independently or install [CryptoClients.Net](https://github.com/jkorf/CryptoClients.Net) which includes all exchange API's.
 
+### Full demo application
+A full demo application is available using the [CryptoClients.Net](https://github.com/jkorf/CryptoClients.Net) library:  
+https://github.com/JKorf/CryptoManager.Net
+
 ## Discord
 [![Nuget version](https://img.shields.io/discord/847020490588422145?style=for-the-badge)](https://discord.gg/MSpeEtSY8t)  
 A Discord server is available [here](https://discord.gg/MSpeEtSY8t). Feel free to join for discussion and/or questions around the CryptoExchange.Net and implementation libraries.
@@ -59,6 +63,29 @@ Make a one time donation in a crypto currency of your choice. If you prefer to d
 Alternatively, sponsor me on Github using [Github Sponsors](https://github.com/sponsors/JKorf). 
 
 ## Release notes
+* Version 9.7.0 - 01 Sep 2025
+    * Added LibraryHelpers.CreateHttpClientMessageHandle to standardize HttpMessageHandler creation
+    * Added REST client option for selecting HTTP protocol version
+    * Added REST client option for HTTP client keep alive interval
+    * Added HttpVersion to WebCallResult responses
+    * Updated request logic to default to using HTTP version 2.0 for dotnet core
+
+* Version 9.6.0 - 25 Aug 2025
+    * Added support for parsing REST response even though status indicates error
+    * Added better support for subscriptions without subscribe confirmation
+    * Added check in websocket for receiving 401 unauthorized http response status when 101 was expected
+    * Removed obsolete attribute on Error.Code property, updated the description
+
+* Version 9.5.0 - 19 Aug 2025
+    * Added better error handling support
+    * Added ErrorDescription, ErrorType and IsTransient to Error object
+    * Added ErrorCode in favor of Code
+    * Updated some error messages
+    * Refactored RestApiClient request authentication and AuthenticationProvider to prevent duplicate query string / body serialization
+    * Fixed IOrderBookSocketClient Shared interface not getting registered in DI
+    * Fixed response type in websocket queries not interested in the response
+    * Fixed timing issue in query response processing
+
 * Version 9.4.0 - 04 Aug 2025
     * Updated Shared symbol requests/subscriptions to allow multiple symbols in one call if supported