tcp连接代码(tcp半连接)

返回192.168.0.1路由器设置

最后更新：2022-11-15 07:18:13 手机定位技术交流文章

用C语言写一段代码，与192.168.1.1的tcp80端口建立连接

很早以前写的一段示例代码，希望对你有帮助//windows TCP Client# include "winsock2.h"void main(void){WSADATA wsaData;SOCKET s;SOCKADDR_IN ServerAddr;int Port = 80; //初始化Windows Socket 2.2 WSAStartup(MAKEWORD(2，2)，wsaData); // 创建一个新的Socket来连接服务器 s = socket(AF_INET， SOCK_STREAM， IPPROTO_TCP); // 填写客户端地址信息// 端口为80// 服务器IP地址为"192.168.1.1"，注意使用inet_addr将IP地址转换为网络格式 ServerAddr.sin_family = AF_INET;ServerAddr.sin_port = htons(Port);ServerAddr.sin_addr.s_addr = inet_addr("192.168.1.1"); // 向服务器发出连接请求 connect(s， (SOCKADDR *) &ServerAddr， sizeof(ServerAddr)); // 新的连接建立后，就可以互相通信了，在这个简单的例子中，我们直接关闭连接，// 并关闭监听Socket，然后退出应用程序 closesocket(s); // 释放Windows Socket DLL的相关资源 WSACleanup();}

c#中使用TCP socket通信，第一次打开TCP连接成功，关闭后，再次打开就失败。

关闭socket.Close()后，socket对象就为null，再次打开socket时会发生异常。稍微修改一下：private void tcpStart_Click(object sender, EventArgs e) { //IPAddress ipAddr = IPAddress.Parse("172.24.54.19"); IPAddress ipAddr = IPAddress.Parse(IP); IPEndPoint ipEnd = new IPEndPoint(ipAddr, 9603);//创建socket实例！加上这句！！！！！socket = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp) try { socket.Connect(ipEnd); btnStart.Enabled = true; MessageBox.Show("TCP连接成功！！"); } catch { MessageBox.Show("TCP连接失败！！"); }}

求一个C语言的TCP 客户/服务连接示例代码

#include #include #pragma comment(lib, "ws2_32.lib")void main() {// 初始化WSADATA wsaData;int iResult = WSAStartup( MAKEWORD(2,2), &wsaData );if ( iResult != NO_ERROR )printf("Error at WSAStartup()n");// 建立socketSOCKET server;server = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );if ( server == INVALID_SOCKET ) {printf( "Error at socket(): %ldn", WSAGetLastError() );WSACleanup();return;}// 绑定socketsockaddr_in service;service.sin_family = AF_INET;service.sin_addr.s_addr = inet_addr( "127.0.0.1" );service.sin_port = htons( 27015 );if ( bind( server, (SOCKADDR*) &service, sizeof(service) ) == SOCKET_ERROR ) {printf( "bind() failed.n" );closesocket(server);return;}// 监听 socketif ( listen( server, 1 ) == SOCKET_ERROR )printf( "Error listening on socket.n");// 接受连接SOCKET AcceptSocket;printf( "Waiting for a client to connect...n" );while (1) {AcceptSocket = SOCKET_ERROR;while ( AcceptSocket == SOCKET_ERROR ) {AcceptSocket = accept( server, NULL, NULL );}printf( "Client Connected.n");server = AcceptSocket;break;}// 发送接受数据int bytesSent;int bytesRecv = SOCKET_ERROR;char sendbuf[32] = "Server: Sending Data.";char recvbuf[32] = "";bytesRecv = recv( server, recvbuf, 32, 0 );printf( "Bytes Recv: %ldn", bytesRecv );bytesSent = send( server, sendbuf, strlen(sendbuf), 0 );printf( "Bytes Sent: %ldn", bytesSent );return;} SERVER的