WSAPROTOCOL_INFO 结构在哪里设置啊,谢谢.

Question

如题.

Answer 1

因为我的导师让我做corba啊,要很深入的研究socket才行.我最近看msdn头疼死了。
设置这个结构不是能更精确的建立socket吗?

Answer 2

寒。你说起corba我就背心发凉，这次考中间件差点挂了..-_-b其实 WSAEnumProtocols 可以获得本机可用的传输协议里面会返回一个 WSAPROTOCOL_INFO 结构，你可以研究一下^_^

Answer 3

Use the WSAPROTOCOL_INFO Structure to Create a Socket
if (WSAStartup(MAKEWORD(2,2), &WSAData))
      printf("WSAStartup %d", WSAGetLastError());
   else
      {
      // First, have WSAEnumProtocols tell you how big a buffer you need.
      nRet = WSAEnumProtocols(NULL, lpProtocolBuf, &dwBufLen);
      if (SOCKET_ERROR != nRet)
         printf("WSAEnumProtocols: should not have succeeded\n");
      else if (WSAENOBUFS != (dwErr = WSAGetLastError()))
         // WSAEnumProtocols failed for some reason not relating to buffer
         // size - also odd.
         printf("WSAEnumProtocols(1): %d\n", WSAGetLastError());
      else
         {
         // WSAEnumProtocols failed for the "expected" reason. Therefore,
         // you need to allocate a buffer of the appropriate size.
         lpProtocolBuf = (WSAPROTOCOL_INFO *)malloc(dwBufLen);
         if (lpProtocolBuf)
            {
            // Now you can call WSAEnumProtocols again with the expectation
            // that it will succeed because you have allocated a big enough
            // buffer.
            nRet = WSAEnumProtocols(NULL, lpProtocolBuf, &dwBufLen);
            if (SOCKET_ERROR == nRet)
               printf("WSAEnumProtocols(3): %d\n", WSAGetLastError());
            else
               {
               // Loop through protocols, looking for the first service
               // provider that meets the matching criteria.
               bProtocolFound = FALSE;
               for (i=0; i<nRet; i++)
                  {
                  if ((IPPROTO_TCP == lpProtocolBuf[i].iProtocol) &&
                      (XP1_QOS_SUPPORTED == (XP1_QOS_SUPPORTED &
                       lpProtocolBuf[i].dwServiceFlags1)))
                     {
                     bProtocolFound = TRUE;
                     break;
                     }
                  }
               }
            }
         }
      }

Answer 4

PiggyXP,你好,哪个学校的呀，
我东南的，以后多交流。