83 lines
1.8 KiB
C#
83 lines
1.8 KiB
C#
/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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using System;
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using System.Net;
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using System.Threading;
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namespace Microsoft.Unity.VisualStudio.Editor.Messaging
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{
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internal class TcpListener
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{
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private const int ListenTimeoutMilliseconds = 5000;
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private class State
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{
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public System.Net.Sockets.TcpListener TcpListener;
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public byte[] Buffer;
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}
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public static int Queue(byte[] buffer)
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{
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var tcpListener = new System.Net.Sockets.TcpListener(IPAddress.Any, 0);
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var state = new State {Buffer = buffer, TcpListener = tcpListener};
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try
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{
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tcpListener.Start();
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int port = ((IPEndPoint)tcpListener.LocalEndpoint).Port;
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ThreadPool.QueueUserWorkItem(_ =>
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{
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bool listening = true;
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while (listening)
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{
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var handle = tcpListener.BeginAcceptTcpClient(OnIncomingConnection, state);
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listening = handle.AsyncWaitHandle.WaitOne(ListenTimeoutMilliseconds);
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}
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Cleanup(state);
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});
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return port;
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}
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catch (Exception)
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{
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Cleanup(state);
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return -1;
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}
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}
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private static void OnIncomingConnection(IAsyncResult result)
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{
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var state = (State)result.AsyncState;
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try
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{
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using (var client = state.TcpListener.EndAcceptTcpClient(result))
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{
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using (var stream = client.GetStream())
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{
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stream.Write(state.Buffer, 0, state.Buffer.Length);
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}
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}
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}
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catch (Exception)
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{
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// Ignore and cleanup
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}
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}
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private static void Cleanup(State state)
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{
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state.TcpListener?.Stop();
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state.TcpListener = null;
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state.Buffer = null;
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}
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}
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}
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