getpeername returning ENOTCONN for a connected socket

[Steven Hartland]

I've been trying to debug an issue where a call to getpeername
on a connected tcp socket returns ENOTCONN with no prior errors
being reported by previous socket calls.

At first I thought this was perl / perl module bug but I've now
reproduced the behaviour with a small native c client.

The flow is:-
0. socket
1. connect
2. getpeername
3. send
4. recv <- 14 bytes
5. sleep(1)
6. getpeername
7. send
8. recv <- 0 bytes
9. getpeername
10. send
11. recv <- 0 bytes
12. getpeername <- error ENOTCONN

Now given no previous errors from either connect, send or recv
if the connection has been terminated by the other end, which
tcpdump shows its has (RST), I would expect to get ECONNRESET
from getpeername and not ENOTCONN.

The only case I would expect ENOTCONN is if either no connect
call had been made or if it was unsuccessful.

Am I missing something here, is ENOTCONN and expected result
from a previously connected socket with no other indication
of error?

    Regards
    Steve

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