yamt commented on issue #16693:
URL: https://github.com/apache/nuttx/issues/16693#issuecomment-3050960755
> standard-wise, the nuttx behavior might or might be allowed. (i haven't
checked.)
standard-wise, i couldn't find anything about ai_protocol in susv4-2018
except the following text:
The fields ai_family, ai_socktype, and ai_protocol shall be usable
as the arguments to the socket() function to create a socket suitable
for use with the returned address.
because ai_protocol is usually merely used to feed socket() and socket()
usually accepts 0, it's probably standard-wise ok for getaddrinfo to return
ai_protocol=0.
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