由于只有部分代码，自己填不上.......程序未能运行成功，悲剧！

server:

1 SOCKET s = ::socket(AF_INET,SOCK_DGRAM,IPPROTO_TCP); 2      if(s == INVALID_SOCKET) 3      { 4          printf("Failed socket()\n"); 5          return 0; 6      } 7      //填充sockaddr_in结构 8      sockaddr_in sin; 9      sin.sin_family = AF_INET;10      sin.sin_port = htons(4567);11      sin.sin_addr.S_un.S_addr = INADDR_ANY;12      //绑定这个套接字的一个本地地址13      if(::bind(s,(LPSOCKADDR)&sin,sizeof(sin)) == SOCKET_ERROR)14      {15          printf("Failed bind()\n");16          return 0;17      }18      //进入监听模式19      if(::listen(s,2) == SOCKET_ERROR)20      {21          printf("Failed listen()\n");22          return 0;23      }24      //接收数据25      char buff[1024];26      sockaddr_in addr;27      int nLen = sizeof(addr);28      while(TRUE)29      {30          int nRecv = ::recvfrom(s,buff,1024,0,(sockaddr*)&addr,&nLen);31          if(nRecv > 0)32          {33              buff[nRecv] = '\0';34              printf("接收到数据 (%s):%s",::inet_ntoa(addr.sin_addr),buff);35          }36      }37      ::closesocket(s);

client:

1 sockaddr_in addr;2      addr.sin_family=AF_INET;3      addr.sin_port=htons(4567);4      addr.sin_addr.S_un.S_addr=inet_addr("49.140.16.244");5      //发送数据6      char szText[] = "TCP Server Demo!\r\n";7      ::sendto(s,szText,strlen(szText),0,(sockaddr*)&addr,sizeof(addr));

只能这样了，日后再说