客户端

网络头文件 网络库

打开网络库

校验版本

创建SOCKET

SOCKET socketServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

if (INVALID_SOCKET == socketServer)

{

	int errorcode = WSAGetLastError();

	WSACleanup();

	return 0;

}

连接到服务器

int WSAAPI connect(

  SOCKET         s,

  const sockaddr *name,

  int            namelen

);

sockaddr_in serverMsg;

serverMsg.sin_family = AF_INET;

serverMsg.sin_port = htons(12345);

serverMsg.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");

if (SOCKET_ERROR == connect(socketServer, (const sockaddr *)& serverMsg, sizeof(serverMsg)))

{

	int errorcode = WSAGetLastError();

	closesocket(socketServer);

	WSACleanup();

	return 0;

}

与服务器收发消息