tcpclient.cpp

用visual c++编写的tcp客户端应用程序

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

void main()
{
	WORD wVersionRequested;
	WSADATA wsaData;
	int err;
 
	wVersionRequested = MAKEWORD( 1, 1 );
 
	err = WSAStartup( wVersionRequested, &wsaData );
	if ( err != 0 ) 
	{
		return;
	}
 
	if ( LOBYTE( wsaData.wVersion ) != 1 ||
        HIBYTE( wsaData.wVersion ) != 1 ) 
	{
		WSACleanup( );
		return; 
	}
	SOCKET sckclient=socket(AF_INET,SOCK_STREAM,0);
	sockaddr_in addrsrv;
	addrsrv.sin_addr.S_un.S_addr=inet_addr("192.168.0.5"/*"127.0.0.1"*/);
	addrsrv.sin_family=AF_INET;
	addrsrv.sin_port=htons(5050);
	connect(sckclient,(sockaddr*)&addrsrv,sizeof(sockaddr));
	char recvbuf[10];
	recv(sckclient,recvbuf,strlen(recvbuf),0);
	printf("%s\n",recvbuf);
	char sendbuf[20]="000008115000815";
	send(sckclient,sendbuf,strlen(sendbuf)+1,0);
	closesocket(sckclient);
	WSACleanup();
}