Re: Bug (and fix): leaks of TCP connections when connected

From: Oliver Jowett <oliver(at)opencloud(dot)com>
To: Laurent Sylvain <sylvain(dot)laurent(at)elca(dot)ch>
Cc: "'pgsql-jdbc(at)postgresql(dot)org'" <pgsql-jdbc(at)postgresql(dot)org>
Subject: Re: Bug (and fix): leaks of TCP connections when connected
Date: 2004-06-22 02:03:38
Message-ID: 40D7937A.3040703@opencloud.com
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Laurent Sylvain wrote:
> Hello,
>
> I experienced some TCP connection leaks when using PGSQL JDBC driver 7.4
> (build 214) to connect to a 7.3.4 server.
> The symptoms are that when performing a netstat on the client machine, many
> connections were in the CLOSE_WAIT state.
>
> The problem is that the driver tries to connect using v3 protocol and when
> it sees that the server doesn't understand it, it opens a new connection
> (PGStream) to the server without closing the previous one:

In theory the discarded connections should eventually be garbage
collected and closed, right? So at least the leak is bounded.

(I'll check that this is fixed in my patches; I restructured that area
quite a bit)

-O

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