wip

CryptoExchange.Net/SharedApis/Interfaces/Legacy/Socket/IKlineSocketClient.cs

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+using System;
+using System.Threading.Tasks;
+using System.Threading;
+using CryptoExchange.Net.Objects.Sockets;
+using CryptoExchange.Net.Objects;
+
+namespace CryptoExchange.Net.SharedApis
+{
+    /// <summary>
+    /// Client for subscribing to kline/candlestick updates for a symbol
+    /// </summary>
+    public interface IKlineSocketClient : ISharedClient
+    {
+        /// <summary>
+        /// Kline subscription options
+        /// </summary>
+        SubscribeKlineOptions SubscribeKlineOptions { get; }
+
+        /// <summary>
+        /// Subscribe to kline/candlestick updates for a symbol
+        /// </summary>
+        /// <param name="request">Request info</param>
+        /// <param name="handler">Update handler</param>
+        /// <param name="ct">Cancellation token, can be used to stop the updates</param>
+        /// <returns></returns>
+        Task<WebSocketResult<UpdateSubscription>> SubscribeToKlineUpdatesAsync(SubscribeKlineRequest request, Action<DataEvent<SharedKline>> handler, CancellationToken ct = default);
+    }
+}