using?System;
using?System.Collections.Generic;
using?System.Text;
using?System.Net.Sockets;
using?System.Net;
using?System.Threading;
using?System.Text.Regularexpressions;
using?System.Security.Cryptography;

namespace?WebSocket
{
????class?Program
????{
????????static?void?Main（string[]?args）
????????{
????????????int?port?=?10;
????????????byte[]?buffer?=?new?byte[1024];

????????????IPEndPoint?localEP?=?new?IPEndPoint（IPAddress.Any?port）;
????????????Socket?listener?=?new?Socket（localEP.Address.AddressFamily?SocketType.Stream?ProtocolType.Tcp）;

????????????try
????????????{
????????????????listener.Bind（localEP）;
????????????????listener.Listen（10）;

????????????????Console.WriteLine（“等待客戶端連接....“）;
????????????????Socket?sc?=?listener.Accept（）;//接受一個連接
????????????????Console.WriteLine（“接受到了客戶端：“?+?sc.RemoteEndPoint.ToString（）?+?“連接....“）;

????????????????//握手
????????????????int?length?=?sc.Receive（buffer）;//接受客戶端握手信息
????????????????sc.Send（PackHandShakeData（GetSecKeyAccetp（buffer?length）））;
????????????????Console.WriteLine（“已經(jīng)發(fā)送握手協(xié)議了....“）;

????????????????//接受客戶端數(shù)據(jù)
????????????????Console.WriteLine（“等待客戶端數(shù)據(jù)....“）;
????????????????length?=?sc.Receive（buffer）;//接受客戶端信息
????????????????string?clientMsg?=?AnalyticData（buffer?length）;
????????????????Console.WriteLine（“接受到客戶端數(shù)據(jù)：“?+?clientMsg）;

????????????????//發(fā)送數(shù)據(jù)
????????????????int?num?=?0;
????????????????while?（true）
????????????????{
????????????????????num++;
????????????????????string?sendMsg?=?num.ToString（）+“您好，“?+?clientMsg;
????????????????????Console.WriteLine（“發(fā)送數(shù)據(jù)：““?+?sendMsg?+?“”?至客戶端....“）;
????????????????????sc.Send（PackData（sendMsg））;
????????????????????System.Threading.Thread.Sleep（3000）;
????????????????}
????????????????//Console.WriteLine（“演示Over!“）;

????????????}
????????????catch?（Exception?e）
????????????{
????????????????Console.WriteLine（e.ToString（））;
????????????}
????????}
????????///?

????????///?打包握手信息
????????///?

????????///?
????????///?
????????private?static?byte[]?PackHandShakeData（string?secKeyAccept）
????????{
????????????var?responseBuilder?=?new?StringBuilder（）;
????????????responseBuilder.Append（“HTTP/1.1?101?Switching?Protocols“?+?Environment.NewLine）;
????????????responseBuilder.Append（“Upgrade:?websocket“?+?Environment.NewLine）;
????????????responseBuilder.Append（“Connection:?Upgrade“?+?Environment.NewLine）;
????????????responseBuilder.Append（“Sec-WebSocket-Accept:?“?+?secKeyAccept?+?Environment.NewLine?+?Environment.NewLine）;
????????????//如果把上一行換成下面兩行，才是thewebsocketprotocol-17協(xié)議，但居然握手不成功，目前仍沒弄明白！
????????????//responseBuilder.Append（“Sec-WebSocket-Accept:?“?+?secKeyAccept?+?Environment.NewLine）;
????????????//responseBuilder.Append（“Sec-WebSocket-Protocol:?chat“?+?Environment.NewLine）;

????????????return?Encoding.UTF8.GetBytes（responseBuilder.ToString（））;
????????}

????????///?