[lwip-devel] [bug #20155] select() with errorfd set

[Simon Goldschmidt]

Follow-up Comment #3, bug #20155 (project lwip):

Can we collect a list of which events should lead to setting the error fd
set?

- tcp_pcb->err() is called
- connect failed?
- I can not think about udp or raw errors...

http://www.opengroup.org/onlinepubs/000095399/functions/select.html says: 
"A socket shall be considered to have an exceptional condition pending if a
receive operation with O_NONBLOCK clear for the open file description and
with the MSG_OOB flag set would return out-of-band data without blocking. (It
is protocol-specific whether the MSG_OOB flag would be used to read
out-of-band data.) A socket shall also be considered to have an exceptional
condition pending if an out-of-band data mark is present in the receive
queue. Other circumstances under which a socket may be considered to have an
exceptional condition pending are protocol-specific and
implementation-defined."

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