mirror of
https://github.com/JKorf/CryptoExchange.Net
synced 2025-06-07 07:56:12 +00:00
1051 lines
52 KiB
C#
1051 lines
52 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.Diagnostics;
|
|
using System.Diagnostics.CodeAnalysis;
|
|
using System.IO;
|
|
using System.Linq;
|
|
using System.Net;
|
|
using System.Net.Http;
|
|
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
using CryptoExchange.Net.Caching;
|
|
using CryptoExchange.Net.Converters.JsonNet;
|
|
using CryptoExchange.Net.Interfaces;
|
|
using CryptoExchange.Net.Logging.Extensions;
|
|
using CryptoExchange.Net.Objects;
|
|
using CryptoExchange.Net.Objects.Options;
|
|
using CryptoExchange.Net.RateLimiting;
|
|
using CryptoExchange.Net.RateLimiting.Interfaces;
|
|
using CryptoExchange.Net.Requests;
|
|
using Microsoft.Extensions.Logging;
|
|
|
|
namespace CryptoExchange.Net.Clients
|
|
{
|
|
/// <summary>
|
|
/// Base rest API client for interacting with a REST API
|
|
/// </summary>
|
|
public abstract class RestApiClient : BaseApiClient, IRestApiClient
|
|
{
|
|
/// <inheritdoc />
|
|
public IRequestFactory RequestFactory { get; set; } = new RequestFactory();
|
|
|
|
/// <inheritdoc />
|
|
public abstract TimeSyncInfo? GetTimeSyncInfo();
|
|
|
|
/// <inheritdoc />
|
|
public abstract TimeSpan? GetTimeOffset();
|
|
|
|
/// <inheritdoc />
|
|
public int TotalRequestsMade { get; set; }
|
|
|
|
/// <summary>
|
|
/// Request body content type
|
|
/// </summary>
|
|
protected internal RequestBodyFormat RequestBodyFormat = RequestBodyFormat.Json;
|
|
|
|
/// <summary>
|
|
/// How to serialize array parameters when making requests
|
|
/// </summary>
|
|
protected internal ArrayParametersSerialization ArraySerialization = ArrayParametersSerialization.Array;
|
|
|
|
/// <summary>
|
|
/// What request body should be set when no data is send (only used in combination with postParametersPosition.InBody)
|
|
/// </summary>
|
|
protected internal string RequestBodyEmptyContent = "{}";
|
|
|
|
/// <summary>
|
|
/// Request headers to be sent with each request
|
|
/// </summary>
|
|
protected Dictionary<string, string>? StandardRequestHeaders { get; set; }
|
|
|
|
/// <summary>
|
|
/// Whether parameters need to be ordered
|
|
/// </summary>
|
|
protected internal bool OrderParameters { get; set; } = true;
|
|
|
|
/// <summary>
|
|
/// Parameter order comparer
|
|
/// </summary>
|
|
protected IComparer<string> ParameterOrderComparer { get; } = new OrderedStringComparer();
|
|
|
|
/// <summary>
|
|
/// Where to put the parameters for requests with different Http methods
|
|
/// </summary>
|
|
public Dictionary<HttpMethod, HttpMethodParameterPosition> ParameterPositions { get; set; } = new Dictionary<HttpMethod, HttpMethodParameterPosition>
|
|
{
|
|
{ HttpMethod.Get, HttpMethodParameterPosition.InUri },
|
|
{ HttpMethod.Post, HttpMethodParameterPosition.InBody },
|
|
{ HttpMethod.Delete, HttpMethodParameterPosition.InBody },
|
|
{ HttpMethod.Put, HttpMethodParameterPosition.InBody },
|
|
{ new HttpMethod("Patch"), HttpMethodParameterPosition.InBody },
|
|
};
|
|
|
|
/// <inheritdoc />
|
|
public new RestExchangeOptions ClientOptions => (RestExchangeOptions)base.ClientOptions;
|
|
|
|
/// <inheritdoc />
|
|
public new RestApiOptions ApiOptions => (RestApiOptions)base.ApiOptions;
|
|
|
|
/// <summary>
|
|
/// Memory cache
|
|
/// </summary>
|
|
private readonly static MemoryCache _cache = new MemoryCache();
|
|
|
|
/// <summary>
|
|
/// ctor
|
|
/// </summary>
|
|
/// <param name="logger">Logger</param>
|
|
/// <param name="httpClient">HttpClient to use</param>
|
|
/// <param name="baseAddress">Base address for this API client</param>
|
|
/// <param name="options">The base client options</param>
|
|
/// <param name="apiOptions">The Api client options</param>
|
|
public RestApiClient(ILogger logger, HttpClient? httpClient, string baseAddress, RestExchangeOptions options, RestApiOptions apiOptions)
|
|
: base(logger,
|
|
apiOptions.OutputOriginalData ?? options.OutputOriginalData,
|
|
apiOptions.ApiCredentials ?? options.ApiCredentials,
|
|
baseAddress,
|
|
options,
|
|
apiOptions)
|
|
{
|
|
RequestFactory.Configure(options.Proxy, options.RequestTimeout, httpClient);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Create a message accessor instance
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
protected virtual IStreamMessageAccessor CreateAccessor() => new JsonNetStreamMessageAccessor();
|
|
|
|
/// <summary>
|
|
/// Create a serializer instance
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
protected virtual IMessageSerializer CreateSerializer() => new JsonNetMessageSerializer();
|
|
|
|
/// <summary>
|
|
/// Send a request to the base address based on the request definition
|
|
/// </summary>
|
|
/// <param name="baseAddress">Host and schema</param>
|
|
/// <param name="definition">Request definition</param>
|
|
/// <param name="parameters">Request parameters</param>
|
|
/// <param name="cancellationToken">Cancellation token</param>
|
|
/// <param name="additionalHeaders">Additional headers for this request</param>
|
|
/// <param name="weight">Override the request weight for this request definition, for example when the weight depends on the parameters</param>
|
|
/// <returns></returns>
|
|
protected virtual async Task<WebCallResult> SendAsync(
|
|
string baseAddress,
|
|
RequestDefinition definition,
|
|
ParameterCollection? parameters,
|
|
CancellationToken cancellationToken,
|
|
Dictionary<string, string>? additionalHeaders = null,
|
|
int? weight = null)
|
|
{
|
|
var result = await SendAsync<object>(baseAddress, definition, parameters, cancellationToken, additionalHeaders, weight).ConfigureAwait(false);
|
|
return result.AsDataless();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Send a request to the base address based on the request definition
|
|
/// </summary>
|
|
/// <typeparam name="T">Response type</typeparam>
|
|
/// <param name="baseAddress">Host and schema</param>
|
|
/// <param name="definition">Request definition</param>
|
|
/// <param name="parameters">Request parameters</param>
|
|
/// <param name="cancellationToken">Cancellation token</param>
|
|
/// <param name="additionalHeaders">Additional headers for this request</param>
|
|
/// <param name="weight">Override the request weight for this request definition, for example when the weight depends on the parameters</param>
|
|
/// <param name="weightSingleLimiter">Specify the weight to apply to the individual rate limit guard for this request</param>
|
|
/// <param name="rateLimitKeySuffix">An additional optional suffix for the key selector. Can be used to make rate limiting work based on parameters.</param>
|
|
/// <returns></returns>
|
|
protected virtual Task<WebCallResult<T>> SendAsync<T>(
|
|
string baseAddress,
|
|
RequestDefinition definition,
|
|
ParameterCollection? parameters,
|
|
CancellationToken cancellationToken,
|
|
Dictionary<string, string>? additionalHeaders = null,
|
|
int? weight = null,
|
|
int? weightSingleLimiter = null,
|
|
string? rateLimitKeySuffix = null)
|
|
{
|
|
var parameterPosition = definition.ParameterPosition ?? ParameterPositions[definition.Method];
|
|
return SendAsync<T>(
|
|
baseAddress,
|
|
definition,
|
|
parameterPosition == HttpMethodParameterPosition.InUri ? parameters : null,
|
|
parameterPosition == HttpMethodParameterPosition.InBody ? parameters : null,
|
|
cancellationToken,
|
|
additionalHeaders,
|
|
weight,
|
|
weightSingleLimiter,
|
|
rateLimitKeySuffix);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Send a request to the base address based on the request definition
|
|
/// </summary>
|
|
/// <typeparam name="T">Response type</typeparam>
|
|
/// <param name="baseAddress">Host and schema</param>
|
|
/// <param name="definition">Request definition</param>
|
|
/// <param name="uriParameters">Request query parameters</param>
|
|
/// <param name="bodyParameters">Request body parameters</param>
|
|
/// <param name="cancellationToken">Cancellation token</param>
|
|
/// <param name="additionalHeaders">Additional headers for this request</param>
|
|
/// <param name="weight">Override the request weight for this request definition, for example when the weight depends on the parameters</param>
|
|
/// <param name="weightSingleLimiter">Specify the weight to apply to the individual rate limit guard for this request</param>
|
|
/// <param name="rateLimitKeySuffix">An additional optional suffix for the key selector. Can be used to make rate limiting work based on parameters.</param>
|
|
/// <returns></returns>
|
|
protected virtual async Task<WebCallResult<T>> SendAsync<T>(
|
|
string baseAddress,
|
|
RequestDefinition definition,
|
|
ParameterCollection? uriParameters,
|
|
ParameterCollection? bodyParameters,
|
|
CancellationToken cancellationToken,
|
|
Dictionary<string, string>? additionalHeaders = null,
|
|
int? weight = null,
|
|
int? weightSingleLimiter = null,
|
|
string? rateLimitKeySuffix = null)
|
|
{
|
|
string? cacheKey = null;
|
|
if (ShouldCache(definition))
|
|
{
|
|
cacheKey = baseAddress + definition + uriParameters?.ToFormData();
|
|
_logger.CheckingCache(cacheKey);
|
|
var cachedValue = _cache.Get(cacheKey, ClientOptions.CachingMaxAge);
|
|
if (cachedValue != null)
|
|
{
|
|
_logger.CacheHit(cacheKey);
|
|
var original = (WebCallResult<T>)cachedValue;
|
|
return original.Cached();
|
|
}
|
|
|
|
_logger.CacheNotHit(cacheKey);
|
|
}
|
|
|
|
int currentTry = 0;
|
|
while (true)
|
|
{
|
|
currentTry++;
|
|
var requestId = ExchangeHelpers.NextId();
|
|
|
|
var prepareResult = await PrepareAsync(requestId, baseAddress, definition, cancellationToken, additionalHeaders, weight, weightSingleLimiter, rateLimitKeySuffix).ConfigureAwait(false);
|
|
if (!prepareResult)
|
|
return new WebCallResult<T>(prepareResult.Error!);
|
|
|
|
var request = CreateRequest(
|
|
requestId,
|
|
baseAddress,
|
|
definition,
|
|
uriParameters,
|
|
bodyParameters,
|
|
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);
|
|
if (!result)
|
|
_logger.RestApiErrorReceived(result.RequestId, result.ResponseStatusCode, (long)Math.Floor(result.ResponseTime!.Value.TotalMilliseconds), result.Error?.ToString());
|
|
else
|
|
_logger.RestApiResponseReceived(result.RequestId, result.ResponseStatusCode, (long)Math.Floor(result.ResponseTime!.Value.TotalMilliseconds), OutputOriginalData ? result.OriginalData : "[Data only available when OutputOriginal = true]");
|
|
|
|
if (await ShouldRetryRequestAsync(definition.RateLimitGate, result, currentTry).ConfigureAwait(false))
|
|
continue;
|
|
|
|
if (result.Success &&
|
|
ShouldCache(definition))
|
|
{
|
|
_cache.Add(cacheKey!, result);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Prepare before sending a request. Sync time between client and server and check rate limits
|
|
/// </summary>
|
|
/// <param name="requestId">Request id</param>
|
|
/// <param name="baseAddress">Host and schema</param>
|
|
/// <param name="definition">Request definition</param>
|
|
/// <param name="cancellationToken">Cancellation token</param>
|
|
/// <param name="additionalHeaders">Additional headers for this request</param>
|
|
/// <param name="weight">Override the request weight for this request</param>
|
|
/// <param name="weightSingleLimiter">Specify the weight to apply to the individual rate limit guard for this request</param>
|
|
/// <param name="rateLimitKeySuffix">An additional optional suffix for the key selector</param>
|
|
/// <returns></returns>
|
|
/// <exception cref="Exception"></exception>
|
|
protected virtual async Task<CallResult> PrepareAsync(
|
|
int requestId,
|
|
string baseAddress,
|
|
RequestDefinition definition,
|
|
CancellationToken cancellationToken,
|
|
Dictionary<string, string>? additionalHeaders = null,
|
|
int? weight = null,
|
|
int? weightSingleLimiter = null,
|
|
string? rateLimitKeySuffix = null)
|
|
{
|
|
// Time sync
|
|
if (definition.Authenticated)
|
|
{
|
|
if (AuthenticationProvider == null)
|
|
{
|
|
_logger.RestApiNoApiCredentials(requestId, definition.Path);
|
|
return new CallResult<IRequest>(new NoApiCredentialsError());
|
|
}
|
|
|
|
var syncTask = SyncTimeAsync();
|
|
var timeSyncInfo = GetTimeSyncInfo();
|
|
|
|
if (timeSyncInfo != null && timeSyncInfo.TimeSyncState.LastSyncTime == default)
|
|
{
|
|
// Initially with first request we'll need to wait for the time syncing, if it's not the first request we can just continue
|
|
var syncTimeResult = await syncTask.ConfigureAwait(false);
|
|
if (!syncTimeResult)
|
|
{
|
|
_logger.RestApiFailedToSyncTime(requestId, syncTimeResult.Error!.ToString());
|
|
return syncTimeResult.AsDataless();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Rate limiting
|
|
var requestWeight = weight ?? definition.Weight;
|
|
if (requestWeight != 0)
|
|
{
|
|
if (definition.RateLimitGate == null)
|
|
throw new Exception("Ratelimit gate not set when request weight is not 0");
|
|
|
|
if (ClientOptions.RateLimiterEnabled)
|
|
{
|
|
var limitResult = await definition.RateLimitGate.ProcessAsync(_logger, requestId, RateLimitItemType.Request, definition, baseAddress, AuthenticationProvider?._credentials.Key, requestWeight, ClientOptions.RateLimitingBehaviour, rateLimitKeySuffix, cancellationToken).ConfigureAwait(false);
|
|
if (!limitResult)
|
|
return new CallResult(limitResult.Error!);
|
|
}
|
|
}
|
|
|
|
// Endpoint specific rate limiting
|
|
if (definition.LimitGuard != null && ClientOptions.RateLimiterEnabled)
|
|
{
|
|
if (definition.RateLimitGate == null)
|
|
throw new Exception("Ratelimit gate not set when endpoint limit is specified");
|
|
|
|
if (ClientOptions.RateLimiterEnabled)
|
|
{
|
|
var singleRequestWeight = weightSingleLimiter ?? 1;
|
|
var limitResult = await definition.RateLimitGate.ProcessSingleAsync(_logger, requestId, definition.LimitGuard, RateLimitItemType.Request, definition, baseAddress, AuthenticationProvider?._credentials.Key, singleRequestWeight, ClientOptions.RateLimitingBehaviour, rateLimitKeySuffix, cancellationToken).ConfigureAwait(false);
|
|
if (!limitResult)
|
|
return new CallResult(limitResult.Error!);
|
|
}
|
|
}
|
|
|
|
return new CallResult(null);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a request object
|
|
/// </summary>
|
|
/// <param name="requestId">Id of the request</param>
|
|
/// <param name="baseAddress">Host and schema</param>
|
|
/// <param name="definition">Request definition</param>
|
|
/// <param name="uriParameters">The query parameters of the request</param>
|
|
/// <param name="bodyParameters">The body parameters of the request</param>
|
|
/// <param name="additionalHeaders">Additional headers to send with the request</param>
|
|
/// <returns></returns>
|
|
protected virtual IRequest CreateRequest(
|
|
int requestId,
|
|
string baseAddress,
|
|
RequestDefinition definition,
|
|
ParameterCollection? uriParameters,
|
|
ParameterCollection? bodyParameters,
|
|
Dictionary<string, string>? additionalHeaders)
|
|
{
|
|
var uriParams = uriParameters == null ? null : CreateParameterDictionary(uriParameters);
|
|
var bodyParams = bodyParameters == null ? null : CreateParameterDictionary(bodyParameters);
|
|
|
|
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
|
|
{
|
|
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);
|
|
}
|
|
}
|
|
|
|
// 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);
|
|
request.Accept = Constants.JsonContentHeader;
|
|
|
|
if (headers != null)
|
|
{
|
|
foreach (var header in headers)
|
|
request.AddHeader(header.Key, header.Value);
|
|
}
|
|
|
|
if (additionalHeaders != null)
|
|
{
|
|
foreach (var header in additionalHeaders)
|
|
request.AddHeader(header.Key, header.Value);
|
|
}
|
|
|
|
if (StandardRequestHeaders != null)
|
|
{
|
|
foreach (var header in StandardRequestHeaders)
|
|
{
|
|
// Only add it if it isn't overwritten
|
|
if (additionalHeaders?.ContainsKey(header.Key) != true)
|
|
request.AddHeader(header.Key, header.Value);
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
return request;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Execute a request to the uri and returns if it was successful
|
|
/// </summary>
|
|
/// <param name="uri">The uri to send the request to</param>
|
|
/// <param name="method">The method of the request</param>
|
|
/// <param name="cancellationToken">Cancellation token</param>
|
|
/// <param name="parameters">The parameters of the request</param>
|
|
/// <param name="signed">Whether or not the request should be authenticated</param>
|
|
/// <param name="requestBodyFormat">The format of the body content</param>
|
|
/// <param name="parameterPosition">Where the parameters should be placed, overwrites the value set in the client</param>
|
|
/// <param name="arraySerialization">How array parameters should be serialized, overwrites the value set in the client</param>
|
|
/// <param name="requestWeight">Credits used for the request</param>
|
|
/// <param name="additionalHeaders">Additional headers to send with the request</param>
|
|
/// <param name="gate">The ratelimit gate to use</param>
|
|
/// <returns></returns>
|
|
[return: NotNull]
|
|
protected virtual async Task<WebCallResult> SendRequestAsync(
|
|
Uri uri,
|
|
HttpMethod method,
|
|
CancellationToken cancellationToken,
|
|
Dictionary<string, object>? parameters = null,
|
|
bool signed = false,
|
|
RequestBodyFormat? requestBodyFormat = null,
|
|
HttpMethodParameterPosition? parameterPosition = null,
|
|
ArrayParametersSerialization? arraySerialization = null,
|
|
int requestWeight = 1,
|
|
Dictionary<string, string>? additionalHeaders = null,
|
|
IRateLimitGate? gate = null)
|
|
{
|
|
int currentTry = 0;
|
|
while (true)
|
|
{
|
|
currentTry++;
|
|
var request = await PrepareRequestAsync(uri, method, cancellationToken, parameters, signed, requestBodyFormat, parameterPosition, arraySerialization, requestWeight, additionalHeaders, gate).ConfigureAwait(false);
|
|
if (!request)
|
|
return new WebCallResult(request.Error!);
|
|
|
|
var result = await GetResponseAsync<object>(request.Data, gate, cancellationToken).ConfigureAwait(false);
|
|
if (!result)
|
|
_logger.RestApiErrorReceived(result.RequestId, result.ResponseStatusCode, (long)Math.Floor(result.ResponseTime!.Value.TotalMilliseconds), result.Error?.ToString());
|
|
else
|
|
_logger.RestApiResponseReceived(result.RequestId, result.ResponseStatusCode, (long)Math.Floor(result.ResponseTime!.Value.TotalMilliseconds), OutputOriginalData ? result.OriginalData : "[Data only available when OutputOriginal = true]");
|
|
|
|
if (await ShouldRetryRequestAsync(gate, result, currentTry).ConfigureAwait(false))
|
|
continue;
|
|
|
|
return result.AsDataless();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Execute a request to the uri and deserialize the response into the provided type parameter
|
|
/// </summary>
|
|
/// <typeparam name="T">The type to deserialize into</typeparam>
|
|
/// <param name="uri">The uri to send the request to</param>
|
|
/// <param name="method">The method of the request</param>
|
|
/// <param name="cancellationToken">Cancellation token</param>
|
|
/// <param name="parameters">The parameters of the request</param>
|
|
/// <param name="signed">Whether or not the request should be authenticated</param>
|
|
/// <param name="requestBodyFormat">The format of the body content</param>
|
|
/// <param name="parameterPosition">Where the parameters should be placed, overwrites the value set in the client</param>
|
|
/// <param name="arraySerialization">How array parameters should be serialized, overwrites the value set in the client</param>
|
|
/// <param name="requestWeight">Credits used for the request</param>
|
|
/// <param name="additionalHeaders">Additional headers to send with the request</param>
|
|
/// <param name="gate">The ratelimit gate to use</param>
|
|
/// <param name="preventCaching">Whether caching should be prevented for this request</param>
|
|
/// <returns></returns>
|
|
[return: NotNull]
|
|
protected virtual async Task<WebCallResult<T>> SendRequestAsync<T>(
|
|
Uri uri,
|
|
HttpMethod method,
|
|
CancellationToken cancellationToken,
|
|
Dictionary<string, object>? parameters = null,
|
|
bool signed = false,
|
|
RequestBodyFormat? requestBodyFormat = null,
|
|
HttpMethodParameterPosition? parameterPosition = null,
|
|
ArrayParametersSerialization? arraySerialization = null,
|
|
int requestWeight = 1,
|
|
Dictionary<string, string>? additionalHeaders = null,
|
|
IRateLimitGate? gate = null,
|
|
bool preventCaching = false
|
|
) where T : class
|
|
{
|
|
var key = uri.ToString() + method + signed + parameters?.ToFormData();
|
|
if (ShouldCache(method) && !preventCaching)
|
|
{
|
|
_logger.CheckingCache(key);
|
|
var cachedValue = _cache.Get(key, ClientOptions.CachingMaxAge);
|
|
if (cachedValue != null)
|
|
{
|
|
_logger.CacheHit(key);
|
|
var original = (WebCallResult<T>)cachedValue;
|
|
return original.Cached();
|
|
}
|
|
|
|
_logger.CacheNotHit(key);
|
|
}
|
|
|
|
int currentTry = 0;
|
|
while (true)
|
|
{
|
|
currentTry++;
|
|
var request = await PrepareRequestAsync(uri, method, cancellationToken, parameters, signed, requestBodyFormat, parameterPosition, arraySerialization, requestWeight, additionalHeaders, gate).ConfigureAwait(false);
|
|
if (!request)
|
|
return new WebCallResult<T>(request.Error!);
|
|
|
|
var result = await GetResponseAsync<T>(request.Data, gate, cancellationToken).ConfigureAwait(false);
|
|
if (!result)
|
|
_logger.RestApiErrorReceived(result.RequestId, result.ResponseStatusCode, (long)Math.Floor(result.ResponseTime!.Value.TotalMilliseconds), result.Error?.ToString());
|
|
else
|
|
_logger.RestApiResponseReceived(result.RequestId, result.ResponseStatusCode, (long)Math.Floor(result.ResponseTime!.Value.TotalMilliseconds), OutputOriginalData ? result.OriginalData : "[Data only available when OutputOriginal = true]");
|
|
|
|
if (await ShouldRetryRequestAsync(gate, result, currentTry).ConfigureAwait(false))
|
|
continue;
|
|
|
|
if (result.Success &&
|
|
ShouldCache(method) &&
|
|
!preventCaching)
|
|
{
|
|
_cache.Add(key, result);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Prepares a request to be sent to the server
|
|
/// </summary>
|
|
/// <param name="uri">The uri to send the request to</param>
|
|
/// <param name="method">The method of the request</param>
|
|
/// <param name="cancellationToken">Cancellation token</param>
|
|
/// <param name="parameters">The parameters of the request</param>
|
|
/// <param name="signed">Whether or not the request should be authenticated</param>
|
|
/// <param name="requestBodyFormat">The format of the body content</param>
|
|
/// <param name="parameterPosition">Where the parameters should be placed, overwrites the value set in the client</param>
|
|
/// <param name="arraySerialization">How array parameters should be serialized, overwrites the value set in the client</param>
|
|
/// <param name="requestWeight">Credits used for the request</param>
|
|
/// <param name="additionalHeaders">Additional headers to send with the request</param>
|
|
/// <param name="gate">The rate limit gate to use</param>
|
|
/// <returns></returns>
|
|
protected virtual async Task<CallResult<IRequest>> PrepareRequestAsync(
|
|
Uri uri,
|
|
HttpMethod method,
|
|
CancellationToken cancellationToken,
|
|
Dictionary<string, object>? parameters = null,
|
|
bool signed = false,
|
|
RequestBodyFormat? requestBodyFormat = null,
|
|
HttpMethodParameterPosition? parameterPosition = null,
|
|
ArrayParametersSerialization? arraySerialization = null,
|
|
int requestWeight = 1,
|
|
Dictionary<string, string>? additionalHeaders = null,
|
|
IRateLimitGate? gate = null)
|
|
{
|
|
var requestId = ExchangeHelpers.NextId();
|
|
|
|
if (signed)
|
|
{
|
|
if (AuthenticationProvider == null)
|
|
{
|
|
_logger.RestApiNoApiCredentials(requestId, uri.AbsolutePath);
|
|
return new CallResult<IRequest>(new NoApiCredentialsError());
|
|
}
|
|
|
|
var syncTask = SyncTimeAsync();
|
|
var timeSyncInfo = GetTimeSyncInfo();
|
|
|
|
if (timeSyncInfo != null && timeSyncInfo.TimeSyncState.LastSyncTime == default)
|
|
{
|
|
// Initially with first request we'll need to wait for the time syncing, if it's not the first request we can just continue
|
|
var syncTimeResult = await syncTask.ConfigureAwait(false);
|
|
if (!syncTimeResult)
|
|
{
|
|
_logger.RestApiFailedToSyncTime(requestId, syncTimeResult.Error!.ToString());
|
|
return syncTimeResult.As<IRequest>(default);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (requestWeight != 0)
|
|
{
|
|
if (gate == null)
|
|
throw new Exception("Ratelimit gate not set when request weight is not 0");
|
|
|
|
if (ClientOptions.RateLimiterEnabled)
|
|
{
|
|
var limitResult = await gate.ProcessAsync(_logger, requestId, RateLimitItemType.Request, new RequestDefinition(uri.AbsolutePath.TrimStart('/'), method) { Authenticated = signed }, uri.Host, AuthenticationProvider?._credentials.Key, requestWeight, ClientOptions.RateLimitingBehaviour, null, cancellationToken).ConfigureAwait(false);
|
|
if (!limitResult)
|
|
return new CallResult<IRequest>(limitResult.Error!);
|
|
}
|
|
}
|
|
|
|
_logger.RestApiCreatingRequest(requestId, uri);
|
|
var paramsPosition = parameterPosition ?? ParameterPositions[method];
|
|
var request = ConstructRequest(uri, method, parameters?.OrderBy(p => p.Key).ToDictionary(p => p.Key, p => p.Value), signed, paramsPosition, arraySerialization ?? ArraySerialization, requestBodyFormat ?? RequestBodyFormat, requestId, additionalHeaders);
|
|
|
|
string? paramString = "";
|
|
if (paramsPosition == HttpMethodParameterPosition.InBody)
|
|
paramString = $" with request body '{request.Content}'";
|
|
|
|
var headers = request.GetHeaders();
|
|
if (headers.Count != 0)
|
|
paramString += " with headers " + string.Join(", ", headers.Select(h => h.Key + $"=[{string.Join(",", h.Value)}]"));
|
|
|
|
TotalRequestsMade++;
|
|
_logger.RestApiSendingRequest(requestId, method, signed ? "signed": "", request.Uri, paramString);
|
|
return new CallResult<IRequest>(request);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Executes the request and returns the result deserialized into the type parameter class
|
|
/// </summary>
|
|
/// <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>(
|
|
IRequest request,
|
|
IRateLimitGate? gate,
|
|
CancellationToken cancellationToken)
|
|
{
|
|
var sw = Stopwatch.StartNew();
|
|
Stream? responseStream = null;
|
|
IResponse? response = null;
|
|
IStreamMessageAccessor? accessor = null;
|
|
try
|
|
{
|
|
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)
|
|
{
|
|
// Error response
|
|
await accessor.Read(responseStream, true).ConfigureAwait(false);
|
|
|
|
Error error;
|
|
if (response.StatusCode == (HttpStatusCode)418 || response.StatusCode == (HttpStatusCode)429)
|
|
{
|
|
var rateError = ParseRateLimitResponse((int)response.StatusCode, response.ResponseHeaders, accessor);
|
|
if (rateError.RetryAfter != null && gate != null && ClientOptions.RateLimiterEnabled)
|
|
{
|
|
_logger.RestApiRateLimitPauseUntil(request.RequestId, rateError.RetryAfter.Value);
|
|
await gate.SetRetryAfterGuardAsync(rateError.RetryAfter.Value).ConfigureAwait(false);
|
|
}
|
|
|
|
error = rateError;
|
|
}
|
|
else
|
|
{
|
|
error = ParseErrorResponse((int)response.StatusCode, response.ResponseHeaders, accessor);
|
|
}
|
|
|
|
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!);
|
|
}
|
|
|
|
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, null, request.RequestId, request.Uri.ToString(), request.Content, request.Method, request.GetHeaders(), ResultDataSource.Server, default, null);
|
|
|
|
var valid = await accessor.Read(responseStream, outputOriginalData).ConfigureAwait(false);
|
|
if (!valid)
|
|
{
|
|
// Invalid json
|
|
var error = new ServerError("Failed to parse response: " + valid.Error!.Message, accessor.OriginalDataAvailable ? accessor.GetOriginalString() : "[Data only available when OutputOriginal = true in client options]");
|
|
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);
|
|
}
|
|
|
|
// Json response received
|
|
var parsedError = TryParseError(response.ResponseHeaders, accessor);
|
|
if (parsedError != null)
|
|
{
|
|
if (parsedError is ServerRateLimitError rateError)
|
|
{
|
|
if (rateError.RetryAfter != null && gate != null && ClientOptions.RateLimiterEnabled)
|
|
{
|
|
_logger.RestApiRateLimitPauseUntil(request.RequestId, rateError.RetryAfter.Value);
|
|
await gate.SetRetryAfterGuardAsync(rateError.RetryAfter.Value).ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
// 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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
catch (HttpRequestException requestException)
|
|
{
|
|
// Request exception, can't reach server for instance
|
|
var exceptionInfo = requestException.ToLogString();
|
|
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(exceptionInfo));
|
|
}
|
|
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());
|
|
}
|
|
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"));
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
accessor?.Clear();
|
|
responseStream?.Close();
|
|
response?.Close();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Can be used to parse an error even though response status indicates success. Some apis always return 200 OK, even though there is an error.
|
|
/// 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="accessor">Data accessor</param>
|
|
/// <param name="responseHeaders">The response headers</param>
|
|
/// <returns>Null if not an error, Error otherwise</returns>
|
|
protected virtual Error? TryParseError(IEnumerable<KeyValuePair<string, IEnumerable<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.
|
|
/// Note that this is always called; even when the request might be successful
|
|
/// </summary>
|
|
/// <typeparam name="T">WebCallResult type parameter</typeparam>
|
|
/// <param name="gate">The rate limit gate the call used</param>
|
|
/// <param name="callResult">The result of the call</param>
|
|
/// <param name="tries">The current try number</param>
|
|
/// <returns>True if call should retry, false if the call should return</returns>
|
|
protected virtual async Task<bool> ShouldRetryRequestAsync<T>(IRateLimitGate? gate, WebCallResult<T> callResult, int tries)
|
|
{
|
|
if (tries >= 2)
|
|
// Only retry once
|
|
return false;
|
|
|
|
if (callResult.Error is ServerRateLimitError
|
|
&& ClientOptions.RateLimiterEnabled
|
|
&& ClientOptions.RateLimitingBehaviour != RateLimitingBehaviour.Fail
|
|
&& gate != null)
|
|
{
|
|
var retryTime = await gate.GetRetryAfterTime().ConfigureAwait(false);
|
|
if (retryTime == null)
|
|
return false;
|
|
|
|
if (retryTime.Value - DateTime.UtcNow < TimeSpan.FromSeconds(60))
|
|
{
|
|
_logger.RestApiRateLimitRetry(callResult.RequestId!.Value, retryTime.Value);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a request object
|
|
/// </summary>
|
|
/// <param name="uri">The uri to send the request to</param>
|
|
/// <param name="method">The method of the request</param>
|
|
/// <param name="parameters">The parameters of the request</param>
|
|
/// <param name="signed">Whether or not the request should be authenticated</param>
|
|
/// <param name="parameterPosition">Where the parameters should be placed</param>
|
|
/// <param name="arraySerialization">How array parameters should be serialized</param>
|
|
/// <param name="bodyFormat">Format of the body content</param>
|
|
/// <param name="requestId">Unique id of a request</param>
|
|
/// <param name="additionalHeaders">Additional headers to send with the request</param>
|
|
/// <returns></returns>
|
|
protected virtual IRequest ConstructRequest(
|
|
Uri uri,
|
|
HttpMethod method,
|
|
Dictionary<string, object>? parameters,
|
|
bool signed,
|
|
HttpMethodParameterPosition parameterPosition,
|
|
ArrayParametersSerialization arraySerialization,
|
|
RequestBodyFormat bodyFormat,
|
|
int requestId,
|
|
Dictionary<string, string>? additionalHeaders)
|
|
{
|
|
parameters ??= new Dictionary<string, object>();
|
|
|
|
for (var i = 0; i < parameters.Count; i++)
|
|
{
|
|
var kvp = parameters.ElementAt(i);
|
|
if (kvp.Value is Func<object> delegateValue)
|
|
parameters[kvp.Key] = delegateValue();
|
|
}
|
|
|
|
if (parameterPosition == HttpMethodParameterPosition.InUri)
|
|
{
|
|
foreach (var parameter in parameters)
|
|
uri = uri.AddQueryParameter(parameter.Key, parameter.Value.ToString()!);
|
|
}
|
|
|
|
var headers = new Dictionary<string, string>();
|
|
var uriParameters = parameterPosition == HttpMethodParameterPosition.InUri ? CreateParameterDictionary(parameters) : null;
|
|
var bodyParameters = parameterPosition == HttpMethodParameterPosition.InBody ? CreateParameterDictionary(parameters) : null;
|
|
if (AuthenticationProvider != null)
|
|
{
|
|
try
|
|
{
|
|
AuthenticationProvider.AuthenticateRequest(
|
|
this,
|
|
uri,
|
|
method,
|
|
ref uriParameters,
|
|
ref bodyParameters,
|
|
ref headers,
|
|
signed,
|
|
arraySerialization,
|
|
parameterPosition,
|
|
bodyFormat
|
|
);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
throw new Exception("Failed to authenticate request, make sure your API credentials are correct", ex);
|
|
}
|
|
}
|
|
|
|
// Add the auth parameters to the uri, start with a new URI to be able to sort the parameters including the auth parameters
|
|
if (uriParameters != null)
|
|
uri = uri.SetParameters(uriParameters, arraySerialization);
|
|
|
|
var request = RequestFactory.Create(method, uri, requestId);
|
|
request.Accept = Constants.JsonContentHeader;
|
|
|
|
if (headers != null)
|
|
{
|
|
foreach (var header in headers)
|
|
request.AddHeader(header.Key, header.Value);
|
|
}
|
|
|
|
if (additionalHeaders != null)
|
|
{
|
|
foreach (var header in additionalHeaders)
|
|
request.AddHeader(header.Key, header.Value);
|
|
}
|
|
|
|
if (StandardRequestHeaders != null)
|
|
{
|
|
foreach (var header in StandardRequestHeaders)
|
|
{
|
|
// Only add it if it isn't overwritten
|
|
if (additionalHeaders?.ContainsKey(header.Key) != true)
|
|
request.AddHeader(header.Key, header.Value);
|
|
}
|
|
}
|
|
|
|
if (parameterPosition == HttpMethodParameterPosition.InBody)
|
|
{
|
|
var contentType = bodyFormat == RequestBodyFormat.Json ? Constants.JsonContentHeader : Constants.FormContentHeader;
|
|
if (bodyParameters?.Any() == true)
|
|
WriteParamBody(request, bodyParameters, contentType);
|
|
else
|
|
request.SetContent(RequestBodyEmptyContent, contentType);
|
|
}
|
|
|
|
return request;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Writes the parameters of the request to the request object body
|
|
/// </summary>
|
|
/// <param name="request">The request to set the parameters on</param>
|
|
/// <param name="parameters">The parameters to set</param>
|
|
/// <param name="contentType">The content type of the data</param>
|
|
protected virtual void WriteParamBody(IRequest request, IDictionary<string, object> parameters, string contentType)
|
|
{
|
|
if (contentType == Constants.JsonContentHeader)
|
|
{
|
|
// Write the parameters as json in the body
|
|
string stringData;
|
|
if (parameters.Count == 1 && parameters.TryGetValue(Constants.BodyPlaceHolderKey, out object? value))
|
|
stringData = CreateSerializer().Serialize(value);
|
|
else
|
|
stringData = CreateSerializer().Serialize(parameters);
|
|
request.SetContent(stringData, contentType);
|
|
}
|
|
else if (contentType == Constants.FormContentHeader)
|
|
{
|
|
// Write the parameters as form data in the body
|
|
var stringData = parameters.ToFormData();
|
|
request.SetContent(stringData, contentType);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Parse an error response from the server. Only used when server returns a status other than Success(200) or ratelimit error (429 or 418)
|
|
/// </summary>
|
|
/// <param name="httpStatusCode">The response status code</param>
|
|
/// <param name="responseHeaders">The response headers</param>
|
|
/// <param name="accessor">Data accessor</param>
|
|
/// <returns></returns>
|
|
protected virtual Error ParseErrorResponse(int httpStatusCode, IEnumerable<KeyValuePair<string, IEnumerable<string>>> responseHeaders, IMessageAccessor accessor)
|
|
{
|
|
var message = accessor.OriginalDataAvailable ? accessor.GetOriginalString() : "[Error response content only available when OutputOriginal = true in client options]";
|
|
return new ServerError(message);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Parse a rate limit error response from the server. Only used when server returns http status 429 or 418
|
|
/// </summary>
|
|
/// <param name="httpStatusCode">The response status code</param>
|
|
/// <param name="responseHeaders">The response headers</param>
|
|
/// <param name="accessor">Data accessor</param>
|
|
/// <returns></returns>
|
|
protected virtual ServerRateLimitError ParseRateLimitResponse(int httpStatusCode, IEnumerable<KeyValuePair<string, IEnumerable<string>>> responseHeaders, IMessageAccessor accessor)
|
|
{
|
|
var message = accessor.OriginalDataAvailable ? accessor.GetOriginalString() : "[Error response content only available when OutputOriginal = true in client options]";
|
|
|
|
// Handle retry after header
|
|
var retryAfterHeader = responseHeaders.SingleOrDefault(r => r.Key.Equals("Retry-After", StringComparison.InvariantCultureIgnoreCase));
|
|
if (retryAfterHeader.Value?.Any() != true)
|
|
return new ServerRateLimitError(message);
|
|
|
|
var value = retryAfterHeader.Value.First();
|
|
if (int.TryParse(value, out var seconds))
|
|
return new ServerRateLimitError(message) { RetryAfter = DateTime.UtcNow.AddSeconds(seconds) };
|
|
|
|
if (DateTime.TryParse(value, out var datetime))
|
|
return new ServerRateLimitError(message) { RetryAfter = datetime };
|
|
|
|
return new ServerRateLimitError(message);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Create the parameter IDictionary
|
|
/// </summary>
|
|
/// <param name="parameters"></param>
|
|
/// <returns></returns>
|
|
protected internal IDictionary<string, object> CreateParameterDictionary(IDictionary<string, object> parameters)
|
|
{
|
|
if (!OrderParameters)
|
|
return parameters;
|
|
|
|
return new SortedDictionary<string, object>(parameters, ParameterOrderComparer);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Retrieve the server time for the purpose of syncing time between client and server to prevent authentication issues
|
|
/// </summary>
|
|
/// <returns>Server time</returns>
|
|
protected virtual Task<WebCallResult<DateTime>> GetServerTimestampAsync() => throw new NotImplementedException();
|
|
|
|
/// <inheritdoc />
|
|
public override void SetOptions<T>(UpdateOptions<T> options)
|
|
{
|
|
base.SetOptions(options);
|
|
|
|
RequestFactory.UpdateSettings(options.Proxy, options.RequestTimeout ?? ClientOptions.RequestTimeout);
|
|
}
|
|
|
|
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);
|
|
|
|
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);
|
|
}
|
|
|
|
var localTime = DateTime.UtcNow;
|
|
var result = await GetServerTimestampAsync().ConfigureAwait(false);
|
|
if (!result)
|
|
{
|
|
timeSyncParams.TimeSyncState.Semaphore.Release();
|
|
return result.As(false);
|
|
}
|
|
|
|
if (TotalRequestsMade == 1)
|
|
{
|
|
// If this was the first request make another one to calculate the offset since the first one can be slower
|
|
localTime = DateTime.UtcNow;
|
|
result = await GetServerTimestampAsync().ConfigureAwait(false);
|
|
if (!result)
|
|
{
|
|
timeSyncParams.TimeSyncState.Semaphore.Release();
|
|
return result.As(false);
|
|
}
|
|
}
|
|
|
|
// Calculate time offset between local and server
|
|
var offset = result.Data - localTime.AddMilliseconds(result.ResponseTime!.Value.TotalMilliseconds / 2);
|
|
timeSyncParams.UpdateTimeOffset(offset);
|
|
timeSyncParams.TimeSyncState.Semaphore.Release();
|
|
}
|
|
|
|
return new WebCallResult<bool>(null, null, null, null, null, null, null, null, null, null, ResultDataSource.Server, true, null);
|
|
}
|
|
|
|
private bool ShouldCache(RequestDefinition definition)
|
|
=> ClientOptions.CachingEnabled
|
|
&& definition.Method == HttpMethod.Get
|
|
&& !definition.PreventCaching;
|
|
|
|
private bool ShouldCache(HttpMethod method)
|
|
=> ClientOptions.CachingEnabled
|
|
&& method == HttpMethod.Get;
|
|
}
|
|
}
|