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(UPnP) Fix for zero-length datagrams

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Cthulhu-throwaway 2022-06-01 03:24:46 -03:00
parent b4dc4f3cc9
commit 2abf42515b
1 changed files with 5 additions and 1 deletions
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6
network/natt.c
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@ -194,8 +194,12 @@ bool natt_device_next(struct natt_discovery *discovery,
recvd = recvfrom(discovery->fd, buf, sizeof(buf), 0,
(struct sockaddr *) &device->addr, &addr_size);
if (recvd <= 0)
if (recvd < 0)
return false;
/* Zero-length datagrams are valid, but we can't do anything with them.
Don't treat them as an error. */
if (!recvd)
return true;
/* Parse the data we received.
We are only looking for the 'Location' HTTP header. */