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net/inet/inet_recvfrom.c: Correct the return value (#121)

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NuttX follows OpenGroup.org: https://pubs.opengroup.org/onlinepubs/009695399/functions/recv.html :

[EAGAIN] or [EWOULDBLOCK]
The socket's file descriptor is marked O_NONBLOCK and no data is waiting to be received; or MSG_OOB is set and no out-of-band data is available and either the socket's file descriptor is marked O_NONBLOCK or the socket does not support blocking to await out-of-band data.

ETIMEDOUT is not a valid error to be returned from recv() or recvfrom().
This commit is contained in:
Xiang Xiao 2020-01-17 09:26:47 -08:00 committed by patacongo
parent 41efa2ae72
commit 3e230ca9eb
1 changed files with 8 additions and 0 deletions
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8
net/inet/inet_recvfrom.c
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@ -1086,6 +1086,10 @@ static ssize_t inet_udp_recvfrom(FAR struct socket *psock, FAR void *buf, size_t
*/
ret = net_timedwait(&state. ir_sem, _SO_TIMEOUT(psock->s_rcvtimeo));
if (ret == -ETIMEDOUT)
{
ret = -EAGAIN;
}
/* Make sure that no further events are processed */
@ -1236,6 +1240,10 @@ static ssize_t inet_tcp_recvfrom(FAR struct socket *psock, FAR void *buf, size_t
*/
ret = net_timedwait(&state.ir_sem, _SO_TIMEOUT(psock->s_rcvtimeo));
if (ret == -ETIMEDOUT)
{
ret = -EAGAIN;
}
/* Make sure that no further events are processed */