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这个逻辑有必要么？
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Dec 13, 2009, 4:52:57 AM12/13/09
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if (rc == 0 || rc == SOCKET_ERROR)
{
break;
}
else if (rc != SOCKET_ERROR)
{
// ...
}
{
break;
}
else if (rc != SOCKET_ERROR)
{
// ...
}
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