var t = new Thread(new ThreadStart(() => { HttpListener listener = new HttpListener(); var prefix = string.Format("http://localhost:{0}/", port); listener.Prefixes.Add(prefix); listener.Start(); HttpListenerContext context = listener.GetContext(); HttpListenerRequest request = context.Request; HttpListenerResponse response = context.Response; string responseString = "<HTML><BODY> Hello world!</BODY></HTML>"; byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString); response.ContentLength64 = buffer.Length; System.IO.Stream output = response.OutputStream; output.Write(buffer, 0, buffer.Length); output.Close(); listener.Stop(); })); t.Start();
using System.Net;
static int GetPort() { IPGlobalProperties ipProperties = IPGlobalProperties.GetIPGlobalProperties(); IPEndPoint[] ipEndPoints = ipProperties.GetActiveTcpListeners(); var port = 800; var flag = true; while(flag) { flag = ipEndPoints.Any(p => { return p.Port == 800; }); if (flag) { port += 1; if(port == 60000) { MessageBox.Show("端口都被占用了，请联系管理员"); flag = false; Environment.Exit(0); } } else { flag = false; break; } } return port; }
原文：http://www.cnblogs.com/liulun/p/4393932.html