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分享acceptex 接受链接的问题?
如题，当客户端connect进来但没有发送任何数据，这时候ACCEPTEX这个函数没有接到任何通知或者反映，使用wsagetlasterror也没有什么特殊错误，我想用ACCEPTEX能判断出connnect且还无数据发送就有反映，现在这个函数只有当第一条数据发送后才有反映，accept这个函数我还不想用。而且如果第一链接进来但是不发送任何数据，之后其他的链接即使发送数据了也进不来了，不知道有清楚的吗？
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cracker234 2012-05-19
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I try again
Eleven 2012-05-19
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第4个参数设置为0试试看
BOOL AcceptEx(
__in SOCKET sListenSocket,
__in SOCKET sAcceptSocket,
__in PVOID lpOutputBuffer,
__in DWORD dwReceiveDataLength,
__in DWORD dwLocalAddressLength,
__in DWORD dwRemoteAddressLength,
__out LPDWORD lpdwBytesReceived,
__in LPOVERLAPPED lpOverlapped
);
dwReceiveDataLength
The number of bytes in lpOutputBuffer that will be used for actual receive data at the beginning of the buffer. This size should not include the size of the local address of the server, nor the remote address of the client; they are appended to the output buffer. If dwReceiveDataLength is zero, accepting the connection will not result in a receive operation. Instead, AcceptEx completes as soon as a connection arrives, without waiting for any data.
BOOL AcceptEx(
__in SOCKET sListenSocket,
__in SOCKET sAcceptSocket,
__in PVOID lpOutputBuffer,
__in DWORD dwReceiveDataLength,
__in DWORD dwLocalAddressLength,
__in DWORD dwRemoteAddressLength,
__out LPDWORD lpdwBytesReceived,
__in LPOVERLAPPED lpOverlapped
);
dwReceiveDataLength
The number of bytes in lpOutputBuffer that will be used for actual receive data at the beginning of the buffer. This size should not include the size of the local address of the server, nor the remote address of the client; they are appended to the output buffer. If dwReceiveDataLength is zero, accepting the connection will not result in a receive operation. Instead, AcceptEx completes as soon as a connection arrives, without waiting for any data.
