setsockopt
- 网络设置超时;接收超时
setsockopt-
The Windows Sockets setsockopt function sets a socket option .
中文解释好像是：设置套接字的选项。
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For example , this error occurs when a broadcast address is used for sendto but the broadcast permission is not set by using setsockopt ( SO_BROADCAST ) .
是例如此错误时发生了广播的地址用于Sendto但广播权限不通过setsockopt（SOBROADCAST）设置的。
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Description : An invalid argument ( for example , an argument that specified an invalid level ) was supplied to the setsockopt ( Wsapiref_94aa . asp ) function .
说明：一个无效参数（而是例如的参数指定了无效的级别）提供给setsockopt（Wsapiref94aa.asp）函数。