tcpip网络通信协议:基于TCP的网络通信程序演示

本仅仅是为了演示基于TCP协议网络通信写法采用阻塞模式代码简单:

服务器端代码:

# "Winsock2.h"
# "stdio.h"

void
{
WORD wVersionRequested;
WSADATA wsaData;
err;

wVersionRequested = MAKEWORD(1,1);

err = WSAStartup( wVersionRequested, &wsaData );
( err != 0 )
{
;
}


( LOBYTE( wsaData.wVersion ) != 1 ||
HIBYTE( wsaData.wVersion ) != 1 )
{
WSACleanup( );
;
}

SOCKET sockSrv=(AF_INET,SOCK_STREAM,0);
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(6000);

bind(sockSrv,(SOCKADDR*)&addrSrv,(SOCKADDR));

listen(sockSrv,5);

SOCKADDR_IN addrClient;
len=(SOCKADDR);

while(1)
{
SOCKET sockConn=accept(sockSrv,(SOCKADDR*)&addrClient,&len);

char sendBuf[100];

sprf(sendBuf,"Welcom %s to http://blog.hulin0229.com", inet_ntoa(addrClient.sin_addr));
send(sockConn,sendBuf,strlen(sendBuf)+1,0);

char recvBuf[100];
recv(sockConn,recvBuf,strlen(recvBuf),0);
prf("%s\n",recvBuf);
close(sockConn);
}
}

『注意』本使用了动态连接库文件Ws2_32.lib需要在工程属性里添加对Ws2_32.lib连接本用VC2005编译添加思路方法是:在project\Configuration properties\Linker\Input下Additional Dependencies 项里写如Ws2_32.lib

客户端代码:

# "Winsock2.h"
# "stdio.h"

void
{
WORD wVersionRequested;
WSADATA wsaData;
err;

wVersionRequested = MAKEWORD(1,1);

err = WSAStartup( wVersionRequested, &wsaData );
( err != 0 )
{
;
}


( LOBYTE( wsaData.wVersion ) != 1 ||
HIBYTE( wsaData.wVersion ) != 1 )
{
WSACleanup( );
;
}

SOCKET sockClient=(AF_INET,SOCK_STREAM,0);
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1"); //127.0.0.1是个回路地址
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(6000);

connect(sockClient,(SOCKADDR*)&addrSrv,(SOCKADDR));

char recvBuf[100];
recv(sockClient,recvBuf,strlen(recvBuf),0);
prf("%s\n",recvBuf);
send(sockClient,"我是胡林",strlen("我是胡林")+1,0);
close(sockClient);
WSACleanup;
}

同服务器端样客户端也使用了Ws2_32.lib动态连接库需要在工程属性里添加对Ws2_32.lib连接

延伸阅读

• 2009-9-12-- tcpip通信标准:利用WinInet类进行TCP/IP通信