Remove unused DevToolsClient.cs source file (#19364)

src/Components/WebAssembly/Server/src/MonoDebugProxy/ws-proxy/DevToolsClient.cs

@@ -1,142 +0,0 @@
-using System;
-using System.Threading.Tasks;
-
-using System.Net.WebSockets;
-using System.Threading;
-using System.IO;
-using System.Text;
-using System.Collections.Generic;
-using Microsoft.Extensions.Logging;
-
-namespace WebAssembly.Net.Debugging {
-	internal class DevToolsClient: IDisposable {
-		ClientWebSocket socket;
-		List<Task> pending_ops = new List<Task> ();
-		TaskCompletionSource<bool> side_exit = new TaskCompletionSource<bool> ();
-		List<byte []> pending_writes = new List<byte []> ();
-		Task current_write;
-		readonly ILogger logger;
-
-		public DevToolsClient (ILogger logger) {
-			this.logger = logger;
-		}
-
-		~DevToolsClient() {
-			Dispose(false);
-		}
-
-		public void Dispose() {
-			Dispose(true);
-		}
-
-		public async Task Close (CancellationToken cancellationToken)
-		{
-			if (socket.State == WebSocketState.Open)
-				await socket.CloseOutputAsync (WebSocketCloseStatus.NormalClosure, "Closing", cancellationToken);
-		}
-
-		protected virtual void Dispose (bool disposing) {
-			if (disposing)
-				socket.Dispose ();
-		}
-
-		Task Pump (Task task, CancellationToken token)
-		{
-			if (task != current_write)
-				return null;
-			current_write = null;
-
-			pending_writes.RemoveAt (0);
-
-			if (pending_writes.Count > 0) {
-				current_write = socket.SendAsync (new ArraySegment<byte> (pending_writes [0]), WebSocketMessageType.Text, true, token);
-				return current_write;
-			}
-			return null;
-		}
-
-		async Task<string> ReadOne (CancellationToken token)
-		{
-			byte [] buff = new byte [4000];
-			var mem = new MemoryStream ();
-			while (true) {
-				var result = await this.socket.ReceiveAsync (new ArraySegment<byte> (buff), token);
-				if (result.MessageType == WebSocketMessageType.Close) {
-					return null;
-				}
-
-				if (result.EndOfMessage) {
-					mem.Write (buff, 0, result.Count);
-					return Encoding.UTF8.GetString (mem.GetBuffer (), 0, (int)mem.Length);
-				} else {
-					mem.Write (buff, 0, result.Count);
-				}
-			}
-		}
-
-		protected void Send (byte [] bytes, CancellationToken token)
-		{
-			pending_writes.Add (bytes);
-			if (pending_writes.Count == 1) {
-				if (current_write != null)
-					throw new Exception ("Internal state is bad. current_write must be null if there are no pending writes");
-
-				current_write = socket.SendAsync (new ArraySegment<byte> (bytes), WebSocketMessageType.Text, true, token);
-				pending_ops.Add (current_write);
-			}
-		}
-
-		async Task MarkCompleteAfterward (Func<CancellationToken, Task> send, CancellationToken token)
-		{
-			try {
-				await send(token);
-				side_exit.SetResult (true);
-			} catch (Exception e) {
-				side_exit.SetException (e);
-			}
-		}
-
-		protected async Task<bool> ConnectWithMainLoops(
-			Uri uri,
-			Func<string, CancellationToken, Task> receive,
-			Func<CancellationToken, Task> send,
-			CancellationToken token) {
-
-			logger.LogDebug ("connecting to {0}", uri);
-			this.socket = new ClientWebSocket ();
-			this.socket.Options.KeepAliveInterval = Timeout.InfiniteTimeSpan;
-
-			await this.socket.ConnectAsync (uri, token);
-			pending_ops.Add (ReadOne (token));
-			pending_ops.Add (side_exit.Task);
-			pending_ops.Add (MarkCompleteAfterward (send, token));
-
-			while (!token.IsCancellationRequested) {
-				var task = await Task.WhenAny (pending_ops);
-				if (task == pending_ops [0]) { //pending_ops[0] is for message reading
-					var msg = ((Task<string>)task).Result;
-					pending_ops [0] = ReadOne (token);
-					Task tsk = receive (msg, token);
-					if (tsk != null)
-						pending_ops.Add (tsk);
-				} else if (task == pending_ops [1]) {
-					var res = ((Task<bool>)task).Result;
-					//it might not throw if exiting successfull
-					return res;
-				} else { //must be a background task
-					pending_ops.Remove (task);
-					var tsk = Pump (task, token);
-					if (tsk != null)
-						pending_ops.Add (tsk);
-				}
-			}
-
-			return false;
-		}
-
-		protected virtual void Log (string priority, string msg)
-		{
-			//
-		}
-	}
-}