varnishadm fails on long responses from varnish (patch attached)

[Martin Blix Grydeland]

Hi,

I've found that varnishadm will sometimes exit thinking it has lost the CLI
connection to varnish when the result is long (exceeding the TCP MTU I
guess). This is because the socket it is listening on is non-blocking, and
the read_tmo() function will not restart a read operation that failed with
EAGAIN. Patch attached will change this function into restarting the poll
with timeout on EAGAIN.

Please review - any comments appreciated.

Regards,
Martin Blix Grydeland

-- 
Martin Blix Grydeland
Varnish Software AS
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