C# 通过UDP进行异步通信的实例代码
发布时间:2020-12-15 17:55:33 所属栏目:百科 来源:网络整理
导读:今天PHP站长网 52php.cn把收集自互联网的代码分享给大家,仅供参考。 C# 通过UDP进行异步通信的实例代码 服务器端: using System;using System.Collections.Generic;using System.Text;using System.Net;using System.Ne
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C# 通过UDP进行异步通信的实例代码
服务器端: using System; using System.Collections.Generic; using System.Text; using System.Net; using System.Net.Sockets; using System.Threading; namespace AsyncServer { public class UdpState { public UdpClient udpClient; public IPEndPoint ipEndPoint; public const int BufferSize = 1024; public byte[] buffer = new byte[BufferSize]; public int counter = 0; } public class AsyncUdpSever { private IPEndPoint ipEndPoint = null; private IPEndPoint remoteEP = null; private UdpClient udpReceive = null; private UdpClient udpSend = null; private const int listenPort = 1100; private const int remotePort = 1101; UdpState udpReceiveState = null; UdpState udpSendState = null; private ManualResetEvent sendDone = new ManualResetEvent(false); private ManualResetEvent receiveDone = new ManualResetEvent(false); public AsyncUdpSever() { ipEndPoint = new IPEndPoint(IPAddress.Any,listenPort); remoteEP = new IPEndPoint(Dns.GetHostAddresses(Dns.GetHostName())[0],remotePort); udpReceive = new UdpClient(ipEndPoint); udpSend = new UdpClient(); udpReceiveState = new UdpState(); udpReceiveState.udpClient = udpReceive; udpReceiveState.ipEndPoint = ipEndPoint; udpSendState = new UdpState(); udpSendState.udpClient = udpSend; udpSendState.ipEndPoint = remoteEP; } public void ReceiveMsg() { Console.WriteLine("listening for messages"); while(true) { lock (this) { IAsyncResult iar = udpReceive.BeginReceive(new AsyncCallback(ReceiveCallback),udpReceiveState); receiveDone.WaitOne(); Thread.Sleep(100); } } } private void ReceiveCallback(IAsyncResult iar) { UdpState udpReceiveState = iar.AsyncState as UdpState; if (iar.IsCompleted) { Byte[] receiveBytes = udpReceiveState.udpClient.EndReceive(iar,ref udpReceiveState.ipEndPoint); string receiveString = Encoding.ASCII.GetString(receiveBytes); Console.WriteLine("Received: {0}",receiveString); //Thread.Sleep(100); receiveDone.Set(); SendMsg(); } } private void SendMsg() { udpSend.Connect(udpSendState.ipEndPoint); udpSendState.udpClient = udpSend; udpSendState.counter ++; string message = string.Format("第{0}个UDP请求处理完成!",udpSendState.counter); Byte[] sendBytes = Encoding.Unicode.GetBytes(message); udpSend.BeginSend(sendBytes,sendBytes.Length,new AsyncCallback(SendCallback),udpSendState); sendDone.WaitOne(); } private void SendCallback(IAsyncResult iar) { UdpState udpState = iar.AsyncState as UdpState; Console.WriteLine("第{0}个请求处理完毕!",udpState.counter); Console.WriteLine("number of bytes sent: {0}",udpState.udpClient.EndSend(iar)); sendDone.Set(); } public static void Main() { AsyncUdpSever aus = new AsyncUdpSever(); Thread t = new Thread(new ThreadStart(aus.ReceiveMsg)); t.Start(); Console.Read(); } } } 客户端: using System; using System.Collections.Generic; using System.Text; using System.Net; using System.Net.Sockets; using System.Threading; namespace AsyncClient { public class UdpState { public UdpClient udpClient = null; public IPEndPoint ipEndPoint = null; public const int BufferSize = 1024; public byte[] buffer = new byte[BufferSize]; public int counter = 0; } public class AsyncUdpClient { public static bool messageSent = false; // Receive a message and write it to the console. private const int listenPort = 1101; private const int remotePort = 1100; private IPEndPoint localEP = null; private IPEndPoint remoteEP = null; private UdpClient udpReceive = null; private UdpClient udpSend = null; private UdpState udpSendState = null; private UdpState udpReceiveState = null; private int counter = 0; private ManualResetEvent sendDone = new ManualResetEvent(false); private ManualResetEvent receiveDone = new ManualResetEvent(false); private Socket receiveSocket; private Socket sendSocket; public AsyncUdpClient() { localEP = new IPEndPoint(IPAddress.Any,remotePort); udpReceive = new UdpClient(localEP); udpSend = new UdpClient(); udpSendState = new UdpState(); udpSendState.ipEndPoint = remoteEP; udpSendState.udpClient = udpSend; udpReceiveState = new UdpState(); udpReceiveState.ipEndPoint = remoteEP; udpReceiveState.udpClient = udpReceive; receiveSocket = new Socket(AddressFamily.InterNetwork,SocketType.Dgram,ProtocolType.Udp); receiveSocket.Bind(localEP); sendSocket = new Socket(AddressFamily.InterNetwork,ProtocolType.Udp); sendSocket.Bind(remoteEP); } public void SendMsg() { udpSend.Connect(remoteEP); //Thread t = new Thread(new ThreadStart(ReceiveMessages)); //t.Start(); Byte[] sendBytes; string message; while (true) { message = "Client" + (counter++).ToString(); lock (this) { sendBytes = Encoding.ASCII.GetBytes(message); udpSendState.counter = counter; udpSend.BeginSend(sendBytes,udpSendState); sendDone.WaitOne(); Thread.Sleep(200); ReceiveMessages(); } } } public void SendCallback(IAsyncResult iar) { UdpState udpState = iar.AsyncState as UdpState; if (iar.IsCompleted) { Console.WriteLine("第{0}个发送完毕!",udpState.counter); Console.WriteLine("number of bytes sent: {0}",udpState.udpClient.EndSend(iar)); //if (udpState.counter == 10) //{ // udpState.udpClient.Close(); //} sendDone.Set(); } } public void ReceiveMessages() { lock (this) { udpReceive.BeginReceive(new AsyncCallback(ReceiveCallback),udpReceiveState); receiveDone.WaitOne(); Thread.Sleep(100); } } public void ReceiveCallback(IAsyncResult iar) { UdpState udpState = iar.AsyncState as UdpState; if (iar.IsCompleted) { Byte[] receiveBytes = udpState.udpClient.EndReceive(iar,ref udpReceiveState.ipEndPoint); string receiveString = Encoding.Unicode.GetString(receiveBytes); Console.WriteLine("Received: {0}",receiveString); receiveDone.Set(); } } public static void Main() { AsyncUdpClient auc = new AsyncUdpClient(); auc.SendMsg(); Console.Read(); } } } 以上内容由PHP站长网【52php.cn】收集整理供大家参考研究 如果以上内容对您有帮助,欢迎收藏、点赞、推荐、分享。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |