C# tcp套接字异步通信
`C# tcp套接字异步通信,c#,tcpclient,tcpserver,C#,Tcpclient,Tcpserver,` 使用系统； 使用System.Collections.Generic； 使用System.Linq； 使用系统文本； 使用系统线程； Net系统； 使用System.Net.Sockets； 使用System.Windows.Forms； 命名空间服务器套接字 { 一班 { 公共类状态对象 { //客户端套接字。 公共套接字工作组=null； //接收缓冲区的大小。 public const int BufferSize=1024； //接收缓冲区。 公共字节[]缓冲区=新字节[Buffer
使用系统；
使用System.Collections.Generic；
使用System.Linq；
使用系统文本；
使用系统线程；
Net系统；
使用System.Net.Sockets；
使用System.Windows.Forms；
命名空间服务器套接字
{
一班
{
公共类状态对象
{
//客户端套接字。
公共套接字工作组=null；
//接收缓冲区的大小。
public const int BufferSize=1024；
//接收缓冲区。
公共字节[]缓冲区=新字节[BufferSize]；
//接收到的数据字符串。
公共StringBuilder sb=新StringBuilder（）；
}
公共类异步SocketListener
{
//线程信号。
public static ManualResetEvent allDone=新的ManualResetEvent（false）；
公共异步SocketListener（）
{
}
公共静态侦听（）
{
//输入数据的数据缓冲区。
字节[]字节=新字节[1024]；
//为套接字建立本地端点。
//计算机的DNS名称
//运行侦听器的是“host.contoso.com”。
//IPHostEntry ipHostInfo=Dns.Resolve（Dns.GetHostName（））；
IPAddress=IPAddress.Parse（“192.168.1.89”）；
//IPAddress IPAddress=ipHostInfo.AddressList[0]；
IPEndPoint localEndPoint=新IPEndPoint（ipAddress，8095）；
//创建TCP/IP套接字。
套接字侦听器=新套接字（AddressFamily.InterNetwork，
流，ProtocolType.Tcp）；
//将套接字绑定到本地端点并侦听传入连接。
尝试
{
Bind（localEndPoint）；
听，听（100）；
while（true）
{
//将事件设置为非信号状态。
全部完成。重置（）；
//启动异步套接字以侦听连接。
显示（“正在等待连接…”）；
listener.beginacept(
新建异步回调（AcceptCallback），
听众）；
//TcpListener TcpListener=新的TcpListener（ipAddress，8095）；
//tcpListener.Start（）；
//等待连接完成后再继续。
全部完成。WaitOne（）；
}
}
捕获（例外e）
{
Show（例如ToString（））；
}
MessageBox.Show（“\n按ENTER继续…”）；
Console.Read（）；
}
公共静态无效接受回调（IAsyncResult ar）
{
//向主线程发出继续的信号。
allDone.Set（）；
//获取处理客户端请求的套接字。
套接字侦听器=（套接字）ar.AsyncState；
套接字处理程序=listener.EndAccept（ar）；
//创建状态对象。
StateObject状态=新的StateObject（）；
state.workSocket=处理程序；
handler.BeginReceive（state.buffer，0，StateObject.BufferSize，0，
新的异步回调（ReadCallback），状态）；
}
公共静态void ReadCallback（IAsyncResult ar）
{
String content=String.Empty；
//检索状态对象和处理程序套接字
//从异步状态对象。
StateObject状态=（StateObject）ar.AsyncState；
套接字处理程序=state.workSocket；
//从客户端套接字读取数据。
int bytesRead=handler.EndReceive（ar）；
如果（字节读取>0）
{
//可能会有更多数据，因此请存储到目前为止收到的数据。
state.sb.Append（Encoding.ASCII.GetString(
state.buffer，0，bytesRead））；
//检查文件结尾标记。如果不存在，请读取
//更多数据。
content=state.sb.ToString（）；
if（content.IndexOf（“”>-1）
{
//所有数据都已从数据库中读取
//客户端。在控制台上显示它。
MessageBox.Show（string.Concat（“从套接字读取字节。\n数据：”，
内容,长度,内容),；
//将数据回显到客户端。
发送（处理程序、内容）；
}
其他的
{
//未收到所有数据。获取更多信息。
handler.BeginReceive（state.buffer，0，StateObject.BufferSize，0，
新的异步回调（ReadCallback），状态）；
}
}
}
私有静态void发送（套接字处理程序、字符串数据）
{
//使用ASCII编码将字符串数据转换为字节数据。
byte[]byteData=Encoding.ASCII.GetBytes（数据）；
//开始将数据发送到远程设备。
handler.BeginSend（byteData，0，byteData.Length，0，
新的异步回调（SendCallback），处理程序）；
}
私有静态void SendCallback（IAsyncResult ar）
{
尝试
{
//从状态对象检索套接字。
套接字处理程序=（套接字）ar.AsyncState；
//完成将数据发送到远程设备。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Net;
using System.Net.Sockets;
using System.Windows.Forms;
namespace ServerSocket
{
class Class1
{
public class StateObject
{
// Client socket.
public Socket workSocket = null;
// Size of receive buffer.
public const int BufferSize = 1024;
// Receive buffer.
public byte[] buffer = new byte[BufferSize];
// Received data string.
public StringBuilder sb = new StringBuilder();
}
public class AsynchronousSocketListener
{
// Thread signal.
public static ManualResetEvent allDone = new ManualResetEvent(false);
public AsynchronousSocketListener()
{
}
public static void StartListening()
{
// Data buffer for incoming data.
byte[] bytes = new Byte[1024];
// Establish the local endpoint for the socket.
// The DNS name of the computer
// running the listener is "host.contoso.com".
//IPHostEntry ipHostInfo = Dns.Resolve(Dns.GetHostName());
IPAddress ipAddress = IPAddress.Parse("192.168.1.89");
//IPAddress ipAddress = ipHostInfo.AddressList[0];
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 8095);
// Create a TCP/IP socket.
Socket listener = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
// Bind the socket to the local endpoint and listen for incoming connections.
try
{
listener.Bind(localEndPoint);
listener.Listen(100);
while (true)
{
// Set the event to nonsignaled state.
allDone.Reset();
// Start an asynchronous socket to listen for connections.
MessageBox.Show("Waiting for a connection...");
listener.BeginAccept(
new AsyncCallback(AcceptCallback),
listener);
//TcpListener tcpListener = new TcpListener(ipAddress, 8095);
//tcpListener.Start();
// Wait until a connection is made before continuing.
allDone.WaitOne();
}
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
MessageBox.Show("\nPress ENTER to continue...");
Console.Read();
}
public static void AcceptCallback(IAsyncResult ar)
{
// Signal the main thread to continue.
allDone.Set();
// Get the socket that handles the client request.
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), state);
}
public static void ReadCallback(IAsyncResult ar)
{
String content = String.Empty;
// Retrieve the state object and the handler socket
// from the asynchronous state object.
StateObject state = (StateObject)ar.AsyncState;
Socket handler = state.workSocket;
// Read data from the client socket.
int bytesRead = handler.EndReceive(ar);
if (bytesRead > 0)
{
// There might be more data, so store the data received so far.
state.sb.Append(Encoding.ASCII.GetString(
state.buffer, 0, bytesRead));
// Check for end-of-file tag. If it is not there, read
// more data.
content = state.sb.ToString();
if (content.IndexOf("<EOF>") > -1)
{
// All the data has been read from the
// client. Display it on the console.
MessageBox.Show(string.Concat("Read bytes from socket. \n Data :",
content.Length, content));
// Echo the data back to the client.
Send(handler, content);
}
else
{
// Not all data received. Get more.
handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
new AsyncCallback(ReadCallback), state);
}
}
}
private static void Send(Socket handler, String data)
{
// Convert the string data to byte data using ASCII encoding.
byte[] byteData = Encoding.ASCII.GetBytes(data);
// Begin sending the data to the remote device.
handler.BeginSend(byteData, 0, byteData.Length, 0,
new AsyncCallback(SendCallback), handler);
}
private static void SendCallback(IAsyncResult ar)
{
try
{
// Retrieve the socket from the state object.
Socket handler = (Socket)ar.AsyncState;
// Complete sending the data to the remote device.
int bytesSent = handler.EndSend(ar);
MessageBox.Show(string.Concat("Sent bytes to client.", bytesSent));
handler.Shutdown(SocketShutdown.Both);
handler.Close();
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
}
//public static int Main(String[] args)
//{
// StartListening();
// return 0;
//}
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.Net;
using System.Threading;
using System.Windows.Forms;
namespace ClientSocket
{
class Class1
{
public class StateObject
{
// Client socket.
public Socket workSocket = null;
// Size of receive buffer.
public const int BufferSize = 256;
// Receive buffer.
public byte[] buffer = new byte[BufferSize];
// Received data string.
public StringBuilder sb = new StringBuilder();
}
public class AsynchronousClient
{
// The port number for the remote device.
public const int port = 8095;
// ManualResetEvent instances signal completion.
//set the initial state to signaled
public static ManualResetEvent connectDone =
new ManualResetEvent(false);
public static ManualResetEvent sendDone =
new ManualResetEvent(false);
public static ManualResetEvent receiveDone =
new ManualResetEvent(false);
// The response from the remote device.
public static String response = String.Empty;
public static void StartClient(string Msg)
{
// Connect to a remote device.
try
{
// Establish the remote endpoint for the socket.
// The name of the
// remote device is "host.contoso.com".
//IPAddress ipAddress = IPAddress.Parse("127.0.0.1");
IPAddress ipAddress = IPAddress.Parse("192.168.1.89");
//IPHostEntry ipHostInfo = Dns.Resolve("host.contoso.com");
//IPAddress ipAddress = ipHostInfo.AddressList[0];
IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);
// Create a TCP/IP socket.
Socket client = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
// Connect to the remote endpoint.
client.BeginConnect(remoteEP,
new AsyncCallback(ConnectCallback), client);
//TcpListener tcpListener = new TcpListener(ipAddress, port);
//tcpListener.Start();
connectDone.WaitOne();//Blocks the current thread until the current System.Threading.WaitHandle receives a signal.
// Send test data to the remote device.
Send(client, Msg + "<EOF>");
sendDone.WaitOne();
// Receive the response from the remote device.
Receive(client);
receiveDone.WaitOne();
// Write the response to the console.
MessageBox.Show("Response received", response);
// Release the socket.
//client.Shutdown(SocketShutdown.Both);
//client.Close();
// client.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.KeepAlive, true);
}
catch (SocketException e)
{
MessageBox.Show(e.Message);
}
}
public static void ConnectCallback(IAsyncResult ar)
{
try
{
// Retrieve the socket from the state object.
Socket client = (Socket)ar.AsyncState;//Gets a user-defined object that qualifies or contains information about an
//asynchronous operation.
// Complete the connection.
client.EndConnect(ar);//Ends a pending asynchronous connection request.
MessageBox.Show(string.Concat("Socket connected to ",
client.RemoteEndPoint.ToString()));
// Signal that the connection has been made.
connectDone.Set();
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
}
public static void Receive(Socket client)
{
try
{
// Create the state object.
StateObject state = new StateObject();
state.workSocket = client;
// Begin receiving the data from the remote device.
client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
new AsyncCallback(ReceiveCallback), state);
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
}
public static void ReceiveCallback(IAsyncResult ar)
{
try
{
// Retrieve the state object and the client socket
// from the asynchronous state object.
MessageBox.Show("Receivecallback");
StateObject state = (StateObject)ar.AsyncState;
Socket client = state.workSocket;
// Read data from the remote device.
int bytesRead = client.EndReceive(ar);
if (bytesRead > 0)
{
// There might be more data, so store the data received so far.
state.sb.Append(Encoding.ASCII.GetString(state.buffer, 0, bytesRead));
// Get the rest of the data.
client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
new AsyncCallback(ReceiveCallback), state);
}
else
{
// All the data has arrived; put it in response.
if (state.sb.Length > 1)
{
response = state.sb.ToString();
}
// Signal that all bytes have been received.
receiveDone.Set();
}
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
}
public static void Send(Socket client, String data)
{
// Convert the string data to byte data using ASCII encoding.
byte[] byteData = Encoding.ASCII.GetBytes(data);
// Begin sending the data to the remote device.
client.BeginSend(byteData, 0, byteData.Length, 0,
new AsyncCallback(SendCallback), client);
}
public static void SendCallback(IAsyncResult ar)
{
try
{
// Retrieve the socket from the state object.
Socket client = (Socket)ar.AsyncState;
// Complete sending the data to the remote device.
int bytesSent = client.EndSend(ar);
MessageBox.Show(string.Concat("Sent bytes to server.", bytesSent.ToString()));
SocketConnected(client);
// Signal that all bytes have been sent.
sendDone.Set();
MessageBox.Show("Send Callback");
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
}
public static bool SocketConnected(Socket s)
{
bool part1 = s.Poll(1000, SelectMode.SelectRead);
bool part2 = (s.Available == 0);
if (part1 && part2)
return false;
else
return true;
}
//public static int Main(String[] args)
//{
// StartClient();
// return 0;
//}
}
}
}
handler.Shutdown(SocketShutdown.Both);
handler.Close();