server.cpp

#include <stdio.h>
#ifdef _WIN32
#include <Winsock2.h>
#endif
#pragma comment(lib,"WS2_32.lib")
 
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 sockSrv = socket(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,sizeof(SOCKADDR));
	 listen(sockSrv,5);
 
	 SOCKADDR_IN addrClient;
	 int len=sizeof(SOCKADDR);
 
	 while(1)
	 {
		 SOCKET sockConn=accept(sockSrv,(SOCKADDR*)&addrClient,&len);
		 char sendBuf[50];
		 sprintf(sendBuf,"Welcome %s to here!",inet_ntoa(addrClient.sin_addr));
		 send(sockConn,sendBuf,strlen(sendBuf)+1,0);
		 char recvBuf[50];
		 recv(sockConn,recvBuf,50,0);
		 printf("%s\n",recvBuf);
		 closesocket(sockConn);
	 }
 
}