pgjdbc/pgjdbc GitHub issues and pull requests (mirror)
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To: pgjdbc/pgjdbc <[email protected]>
Subject: [pgjdbc/pgjdbc] PR #3973: fix: retry with SSL on IOException when sslMode=ALLOW
Date: Tue, 17 Mar 2026 17:44:10 +0000
Message-ID: <[email protected]> (raw)
When `sslMode=ALLOW`, the driver tries plaintext first and upgrades to SSL if the server rejects the connection. On Windows, PostgreSQL may reset the connection (`IOException`) instead of sending a FATAL auth error (`SQLException` with `INVALID_AUTHORIZATION_SPECIFICATION`). This caused the `ALLOW` flow to fail instead of upgrading to SSL.
Extract `tryConnectWithSsl` helper (mirrors `tryConnectWithoutSsl`) and handle `IOException` for `ALLOW` in the same catch block as `PREFER`.
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Subject: Re: [pgjdbc/pgjdbc] PR #3973: fix: retry with SSL on IOException when sslMode=ALLOW
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