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 *) &ampServerAddr， 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()

}

#include <stdio.h>

#include <winsock2.h>

#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socket

SOCKET server

server = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP )

if ( server == INVALID_SOCKET ) {

printf( "Error at socket(): %ld\n", WSAGetLastError() )

WSACleanup()

return

}

// 绑定socket

sockaddr_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 socket

if ( 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: %ld\n", bytesRecv )

bytesSent = send( server, sendbuf, strlen(sendbuf), 0 )

printf( "Bytes Sent: %ld\n", bytesSent )

return

}

SERVER的

---