The following bug has been logged online:

Bug reference:      1736
Logged by:          Karsten Desler
Email address:      [EMAIL PROTECTED]
PostgreSQL version: 7.4.7
Operating system:   debian sarge
Description:        endless loop in PQconnectdb
Details: 

I've got a pretty flaky tcpip connection to a Postgres 7.4.7 database server
and often times (once or twice a day) my program gets stuck in an endless
busy-loop in PGconnectdb.

An excerpt from a strace:
poll([{fd=389, events=POLLIN|POLLERR, revents=POLLIN|POLLERR|POLLHUP}], 1,
-1) = 1
recv(389, "", 1, 0)                     = 0
poll([{fd=389, events=POLLIN|POLLERR, revents=POLLIN|POLLERR|POLLHUP}], 1,
-1) = 1
recv(389, "", 1, 0)                     = 0
...

SSL is not involved. Sadly I can't say how far along in the connection
process the bug is triggered, but I could install a libpq3 with debugging
symbols and add a few strategically placed gdb watch/break points, if
needed.

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