setsockopt option, SO_SNDTIMEO and SO_RCVTIMEO implemented?
in linux/net/core/sock.c sock_setsockopt follow
case SO_RCVTIMEO:
ret = sock_set_timeout(&sk->rcvtimeo, optval,
optlen);
break;
case SO_SNDTIMEO:
ret = sock_set_timeout(&sk->sndtimeo, optval,
optlen);
break;
timeval is setting socket buffer
but man 7 socket is ...
SO_RCVTIMEO and SO_SNDTIMEO
Specify the sending or receiving timeouts until reporting an
error. They are
fixed to a protocol specific setting in Linux and cannot
be read or written.
Their functionality can be emulated using alarm(2) or
setitimer(2).
man 7 scoket told me socket timeout can't change!!
Which is ture?
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