转自:https://gist.github.com/jamesmanning/2622054
using System; using System.Collections.Generic; using System.Linq; using System.Net.Sockets; using System.Text; using System.Threading.Tasks; namespace ConsoleApplication2 { class Program { static void Main(string[] args) { StartListener(); ConnectAsTcpClient(); Console.ReadLine(); } private static async void ConnectAsTcpClient() { using (var tcpClient = new TcpClient()) { Console.WriteLine("[Client] Connecting to server"); await tcpClient.ConnectAsync("127.0.0.1", 1234); Console.WriteLine("[Client] Connected to server"); using (var networkStream = tcpClient.GetStream()) { Console.WriteLine("[Client] Writing request {0}", ClientRequestString); await networkStream.WriteAsync(ClientRequestBytes, 0, ClientRequestBytes.Length); var buffer = new byte[4096]; var byteCount = await networkStream.ReadAsync(buffer, 0, buffer.Length); var response = Encoding.UTF8.GetString(buffer, 0, byteCount); Console.WriteLine("[Client] Server response was {0}", response); } } } private static readonly string ClientRequestString = "Some HTTP request here"; private static readonly byte[] ClientRequestBytes = Encoding.UTF8.GetBytes(ClientRequestString); private static readonly string ServerResponseString = "<?xml version="1.0" encoding="utf-8"?><document><userkey>key</userkey> <machinemode>1</machinemode><serial>0000</serial><unitname>Device</unitname><version>1</version></document> "; private static readonly byte[] ServerResponseBytes = Encoding.UTF8.GetBytes(ServerResponseString); private static async void StartListener() { var tcpListener = TcpListener.Create(1234); tcpListener.Start(); var tcpClient = await tcpListener.AcceptTcpClientAsync(); Console.WriteLine("[Server] Client has connected"); using (var networkStream = tcpClient.GetStream()) { var buffer = new byte[4096]; Console.WriteLine("[Server] Reading from client"); var byteCount = await networkStream.ReadAsync(buffer, 0, buffer.Length); var request = Encoding.UTF8.GetString(buffer, 0, byteCount); Console.WriteLine("[Server] Client wrote {0}", request); await networkStream.WriteAsync(ServerResponseBytes, 0, ServerResponseBytes.Length); Console.WriteLine("[Server] Response has been written"); } } } }