socket創建失敗怎麽辦

將 if (setsockopt(sock, IPPROTO_IP, IP_HDRINCL, (char *)&flag, sizeof(flag)) == SOCKET_ERROR)

{

cout << endl << "setsockopt操作失敗" << WSAGetLastError() << endl;

return;

} 改為：

setsockopt(sock, IPPROTO_IP, IP_HDRINCL, (char*)&flag, sizeof(flag));

即可解決