Socket通讯c#.docx

1、Socket通讯c#public class XmlSocket /异步socket诊听 / Incoming data from client.从客户端传来的数据 public static string data = null; / Thread signal.线程 用一个指示是否将初始状态设置为终止的布尔值初始化 ManualResetEvent 类的新实例。 public static ManualResetEvent allDone = new ManualResetEvent(false); /static void Main(string args) / / StartListe

2、ning(); / public static void StartListening() / Data buffer for incoming data. 传入数据缓冲 byte bytes = new Byte1024; / Establish the local endpoint for the socket. 建立本地端口 / The DNS name of the computer / running the listener is . IPAddress ipAddress; String ipString = ConfigurationManager.AppSettings.Ge

3、t(SocketIP); if (ipString=null | ipString =String.Empty) IPHostEntry ipHostInfo = Dns.GetHostEntry(Dns.GetHostName(); ipAddress = ipHostInfo.AddressList0; else ipAddress = IPAddress.Parse(ipString); int port; String portString = ConfigurationManager.AppSettings.Get(SocketPort); if (portString=null |

4、 portString=String.Empty) port = 11001; else port = int.Parse(portString); IPEndPoint localEndPoint = new IPEndPoint(ipAddress, port); / Create a TCP/IP socket. Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); / Bind the socket to the local endpoint and

5、listen for incoming connections.绑定端口和数据 try listener.Bind(localEndPoint); listener.Listen(100); while (true) / Set the event to nonsignaled state.设置无信号状态的事件 allDone.Reset(); / Start an asynchronous socket to listen for connections.重新 启动异步连接 listener.BeginAccept(new AsyncCallback(AcceptCallback), lis

6、tener); / Wait until a connection is made before continuing.等待连接创建后继续 allDone.WaitOne(); catch (Exception e) / public static void AcceptCallback(IAsyncResult ar) try / Signal the main thread to continue.接受回调方法 该方法的此节向主应用程序线程发出信号， /让它继续处理并建立与客户端的连接 allDone.Set(); / Get the socket that handles the cli

7、ent request.获取客户端请求句柄 Socket listener = (Socket)ar.AsyncState; Socket handler = listener.EndAccept(ar); / Create the state object. StateObject state = new StateObject(); state.workSocket = handler; handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReadCallback), stat

8、e); catch (Exception e) / / / 与接受回调方法一样，读取回调方法也是一个 AsyncCallback 委托。 / 该方法将来自客户端套接字的一个或多个字节读入数据缓冲区，然后再次调用 BeginReceive 方法，直到客户端发送的数据完成为止。 / 从客户端读取整个消息后，在控制台上显示字符串，并关闭处理与客户端的连接的服务器套接字。 / / IAsyncResult 委托 public static void ReadCallback(IAsyncResult ar) try String content = String.Empty; / Retrieve t

9、he state object and the handler socket创建自定义的状态对象 from the asynchronous state object. StateObject state = (StateObject)ar.AsyncState; Socket handler = state.workSocket;/处理的句柄 / Read data from the client socket. 读出 int bytesRead = handler.EndReceive(ar); if (bytesRead 0) /业务代码 string result = DoSomeTh

10、ing(.); String len = Encoding.UTF8.GetBytes(result).Length.ToString().PadLeft(8, 0); log.writeLine(len); Send(len + result, handler); catch (Exception e) / private static void Send(String data, Socket handler) try / Convert the string data to byte data using UTF8 encoding. byte byteData = Encoding.U

11、TF8.GetBytes(data); / Begin sending the data to the remote device. handler.BeginSend(byteData, 0, byteData.Length, 0, new AsyncCallback(SendCallback), handler); catch (Exception e) / / / 发送 / / private static void SendCallback(IAsyncResult ar) try / Retrieve the socket from the state object. Socket

12、handler = (Socket)ar.AsyncState; / Complete sending the data to the remote device.向远端发送数据 int bytesSent = handler.EndSend(ar); StateObject state = new StateObject(); state.workSocket = handler; handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,new AsyncCallback(ReadCallback), state); h

13、andler.Shutdown(SocketShutdown.Both); handler.Close(); catch (Exception e) / public static void StopListening() allDone.Close(); log.close(); / / 具体处理业务的方法 / / private static string DoSomething(int i) /具体业务代码,返回需要返回的字符串信息 / / 写日志方法 / / 写入内容 public static void WriteLog(string strLog) /写入日志代码 对我有用9 丢个

14、板砖0 引用 举报 管理 TOP 回复次数：800 sjm2003 (地上的菜鸟) 等级： #1楼 得分：0回复于：2008-06-23 08:27:19C# code / 线程执行体,转发消息 / / 传递给线程执行体的用户名，用以与用户通信 private void ThreadFunc(object obj) /通过转发表得到当前用户套接字 Socket clientSkt = _transmit_tbobj as Socket; /主循环 while (true) try /接受第一个数据包。 /由于程序逻辑结构简单，所以在这里对客户机发送的第一个包内容作逐一判断， /这里的实现不够优

15、雅，但不失为此简单模型的一个解决之道。 byte packetBuff = new byte_maxPacket; clientSkt.Receive(packetBuff); string _str = Encoding.Unicode.GetString(packetBuff).TrimEnd(0); /如果是发给不在线好友的信息 if (_str.StartsWith(cmd:FriendMessage) string UserName = _str.Substring(cmd:FriendMessage.Length, 20).Trim(); string MessageS = _st

16、r.Substring(cmd:FriendMessage.Length + 20, _str.Length - cmd:FriendMessage.Length - 20); SaveMessage(obj as string, UserName, MessageS); continue; /如果是离线请求 if (_str.StartsWith(cmd:RequestLogout) _transmit_tb.Remove(obj); UpdateFriendList(string)obj, false, ); / string svrlog = string.Format(系统消息用户 0

17、 在 1 已断开. 当前在线人数: 2rnrn, obj, DateTime.Now, _transmit_tb.Count); / Console.WriteLine(svrlog); /向所有客户机发送系统消息 /foreach (DictionaryEntry de in _transmit_tb) / / string _clientName = de.Key as string; / Socket _clientSkt = de.Value as Socket; / _clientSkt.Send(Encoding.Unicode.GetBytes(svrlog); / Thread

18、.CurrentThread.Abort(); /如果是请求好友列表 if (_str.StartsWith(cmd:RequestFriendList) SerializeFriendList(obj, clientSkt); / 将该用户不在线时的信息发送给用户 DataTable TabMessage = ReadMessage(obj as string); if (TabMessage != null) foreach (DataRow myrow in TabMessage.Rows) if (myrowSendUserName.ToString() = System:Messag

19、e) clientSkt.Send(Encoding.Unicode.GetBytes(myrowMessage.ToString(); else clientSkt.Send(Encoding.Unicode.GetBytes(cmd:FriendMessage + myrowSendUserName.ToString().PadRight(20, ) + myrowMessage.ToString(); /这里不需要再继续接受后继数据包了，跳出当前循环体。 continue; /如果是请求好友列表 /if (_str.StartsWith(cmd:RequestOnLineList) /

20、/ byte onlineBuff = SerializeOnlineList(); / /先发送响应信号，用户客户机的判断 / clientSkt.Send(Encoding.Unicode.GetBytes(cmd:RequestOnLineList); / clientSkt.Send(onlineBuff); / /这里不需要再继续接受后继数据包了，跳出当前循环体。 / continue; / /查找用户 if (_str.StartsWith(Find:FindFriend) DataTable TabFind = TabUser.Clone(); DataRow FindRow =

21、null ; string UserName = _str.Substring(Find:FindFriend.Length, _str.Length - Find:FindFriend.Length); if (UserName.Equals(Find:WhoOnLine) /看谁在线 FindRow = TabUser.Select( ZX = 1); else/精确查找 FindRow = TabUser.Select(UserName = + UserName + ); foreach (DataRow myrow in FindRow) TabFind.ImportRow(myrow

22、); clientSkt.Send(Encoding.Unicode.GetBytes(Find:FindFriend); IFormatter format = new BinaryFormatter(); MemoryStream stream = new MemoryStream(); format.Serialize(stream, TabFind); stream.Position = 0; byte ret = new byte_maxPacket; int count = 0; count = stream.Read(ret, 0, _maxPacket); while (cou

23、nt 0) clientSkt.Send(ret); count = stream.Read(ret, 0, _maxPacket); clientSkt.Send(Encoding.Unicode.GetBytes(Find:FindFriendEnd); stream.Close(); TabFind = null; FindRow = null; /这里不需要再继续接受后继数据包了，跳出当前循环体。 continue; /请求添加好友 if (_str.StartsWith(Find:AddFriendAsk) string UserName = _str.Substring(Find:

24、AddFriendAsk.Length, _str.Length - Find:AddFriendAsk.Length); /通过转发表查找接收方的套接字 if (_transmit_tb.Count != 0 & _transmit_tb.ContainsKey(UserName) Socket receiverSkt = _transmit_tbUserName as Socket; receiverSkt.Send(Encoding.Unicode.GetBytes(Find:AddFriendAsk + obj as string); /这里不需要再继续接受后继数据包了，跳出当前循环体

25、。 continue; /回复答应添加好友 if (_str.StartsWith(Find:AddFriendYes) string UserName = _str.Substring(Find:AddFriendYes.Length, _str.Length - Find:AddFriendYes.Length); / 保存数据 DataTable TabmyFriend = new DataTable() ; /保存该用户 TabmyFriend.ReadXml(MyPath + UserFriend + obj as string + .xml); DataRow newRow = T

26、abmyFriend.NewRow(); newRowUserName = UserName; TabmyFriend.Rows.Add(newRow); TabmyFriend.WriteXml(MyPath + UserFriend + obj as string + .xml, XmlWriteMode.WriteSchema, false); /保存其好友 TabmyFriend = new DataTable(); TabmyFriend.ReadXml(MyPath + UserFriend + UserName + .xml); DataRow newRow1 = TabmyFr

27、iend.NewRow(); newRow1UserName = obj as string; TabmyFriend.Rows.Add(newRow1); TabmyFriend.WriteXml(MyPath + UserFriend + UserName + .xml, XmlWriteMode.WriteSchema, false); TabmyFriend = null; SerializeFriendList(obj, clientSkt); 对我有用1 丢个板砖1 引用 举报 管理 TOP 精华推荐：程序员多少岁是合适结婚的 sjm2003 (地上的菜鸟) 等级： #2楼 得分：0回复于：2008-06-23 08:32:35C# code /开始按钮事件 private void button1_Click(object sender, System.EventArgs e) /取得预保存的文件名 string fileName=textBox3.Text.Trim(); /远程主机 string hostName=textBox1.Text.Trim(); /端