windows下socket编程实现client和server双向通信

// server.cpp : Defines the entry point for the console application.
//#include <stdio.h>
#include <Winsock2.h>//Socket的函数调用
#include <windows.h>#define BUF_SIZE 6400 // 缓冲区大小 #pragma comment (lib, "ws2_32")// 使用WINSOCK2.H时，则需要库文件WS2_32.LIBDWORD WINAPI Rcv( LPVOID lpParam )
{
SOCKET sClient = *(SOCKET*)lpParam;
int retVal;
char bufRecv[BUF_SIZE];
memset( bufRecv, 0, sizeof( bufRecv ) );
while(1)
{
retVal = recv( sClient, bufRecv, BUF_SIZE, 0 );
if ( retVal == SOCKET_ERROR ) {
printf( "recive faild!\n" );
break;
} else {
printf( "收到客户端消息：%s\n", bufRecv );
}
}
return 0;
}DWORD WINAPI Snd( LPVOID lpParam )
{
SOCKET sClient = *(SOCKET*)lpParam;
int retVal;
char bufSend[BUF_SIZE];
memset( bufSend, 0, sizeof( bufSend ) );
while(1)
{
gets( bufSend );
retVal = send( sClient, bufSend, strlen(bufSend)+sizeof(char), 0 );
if ( retVal == SOCKET_ERROR ) {
printf( "send faild!\n" );
break;
}
}
return 0;
}int main(int argc, char* argv[])
{
// 初始化套接字动态库
WSADATA wsaData;
if ( WSAStartup(MAKEWORD(2, 2), &wsaData) != 0 ) {
printf( "winsock load faild!\n" );
return 1;
}// 创建服务段套接字
SOCKET sServer = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );
if ( sServer == INVALID_SOCKET ) {
printf( "socket faild!\n" );
WSACleanup();
return -1;
}// 服务端地址
sockaddr_in addrServ;addrServ.sin_family = AF_INET;
addrServ.sin_port = htons( 9999 );
addrServ.sin_addr.s_addr = htonl( INADDR_ANY ); // 绑定套接字
if ( bind( sServer, ( const struct sockaddr* )&addrServ, sizeof(addrServ) ) == SOCKET_ERROR ) {
printf( "bind faild!\n" );
closesocket( sServer );
WSACleanup();
return -1;
} printf("Server is On IP:[%s],port:[%d]\n",inet_ntoa(addrServ.sin_addr),ntohs(addrServ.sin_port)); // 监听套接字 数字表示最多能监听客户个数
if ( listen( sServer, 5 ) == SOCKET_ERROR ) {
printf( "listen faild!\n" );
closesocket( sServer );
WSACleanup();
return -1;
} SOCKET sClient; // 客户端套接字sockaddr_in addrClient;
int addrClientLen = sizeof( addrClient );sClient = accept( sServer, ( sockaddr FAR* )&addrClient, &addrClientLen );
if ( sClient == INVALID_SOCKET ) {
printf( "accept faild!\n" );
closesocket( sServer );
WSACleanup();
return -1;
}
printf("accepted client IP:[%s],port:[%d]\n",inet_ntoa(addrClient.sin_addr),ntohs(addrClient.sin_port));HANDLE hThread1, hThread2;
DWORD dwThreadId1, dwThreadId2;hThread1 = ::CreateThread(NULL, NULL, Snd, (LPVOID*)&sClient, 0, &dwThreadId1);
hThread2 = ::CreateThread(NULL, NULL, Rcv, (LPVOID*)&sClient, 0, &dwThreadId2);::WaitForSingleObject(hThread1, INFINITE);
::WaitForSingleObject(hThread2, INFINITE);
::CloseHandle(hThread1);
::CloseHandle(hThread2);closesocket( sClient );
WSACleanup(); // 资源释放return 0;
}

// client.cpp : Defines the entry point for the console application.
//#include <stdio.h>
#include <Winsock2.h>//Socket的函数调用
#include <windows.h>#define BUF_SIZE 6400#pragma comment (lib, "ws2_32")// 使用WINSOCK2.H时，则需要库文件WS2_32.LIBDWORD WINAPI Rcv( LPVOID lpParam )
{
SOCKET sHost = *(SOCKET*)lpParam;
int retVal;
char bufRecv[BUF_SIZE];
memset( bufRecv, 0, sizeof( bufRecv ) );
while(1)
{
retVal = recv( sHost, bufRecv, BUF_SIZE, 0 );
if ( retVal == SOCKET_ERROR ) {
printf( "recive faild!\n" );
break;
} else {
printf( "收到服务器消息：%s\n", bufRecv );
}
}
return 0;
}DWORD WINAPI Snd( LPVOID lpParam )
{
SOCKET sHost = *(SOCKET*)lpParam;
int retVal;
char bufSend[BUF_SIZE];
memset( bufSend, 0, sizeof( bufSend ) );
while(1)
{
gets( bufSend );
retVal = send( sHost, bufSend, strlen(bufSend)+sizeof(char), 0 );
if ( retVal == SOCKET_ERROR ) {
printf( "send faild!\n" );
break;
}
}
return 0;
}int main(int argc, char* argv[])
{
WSADATA wsaData;
if ( WSAStartup( MAKEWORD(2,2), &wsaData ) != 0 ) {
printf( "Winsock load faild!\n" );
return 1;
}// 服务器套接字
SOCKET sHost = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );
if ( sHost == INVALID_SOCKET ) {
printf( "socket faild!\n" );
WSACleanup();
return -1;
}SOCKADDR_IN servAddr;
servAddr.sin_family = AF_INET;
// 注意 当把客户端程序发到别人的电脑时 此处IP需改为服务器所在电脑的IP
servAddr.sin_addr.S_un.S_addr = inet_addr( "127.0.0.1" );
servAddr.sin_port = htons( 9999 );// 连接服务器
if ( connect( sHost, (LPSOCKADDR)&servAddr, sizeof( servAddr ) ) == SOCKET_ERROR ) {
printf( "connect faild!\n" );
closesocket(sHost);
WSACleanup();
return -1;
}
printf("连接到服务器 IP:[%s],port:[%d]\n",inet_ntoa(servAddr.sin_addr),ntohs(servAddr.sin_port));HANDLE hThread1, hThread2;
DWORD dwThreadId1, dwThreadId2;hThread1 = ::CreateThread( NULL, NULL, Snd, (LPVOID)&sHost, 0, &dwThreadId1 );
hThread2 = ::CreateThread( NULL, NULL, Rcv, (LPVOID)&sHost, 0, &dwThreadId2 );::WaitForSingleObject( hThread1, INFINITE );
::WaitForSingleObject( hThread2, INFINITE );
::CloseHandle(hThread1);
::CloseHandle(hThread2);closesocket(sHost);
WSACleanup();
return 0;
}