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From: "vlsi (@vlsi)" <noreply+vlsi@github.com>
To: "pgjdbc/pgjdbc" <noreply+pgjdbc-pgjdbc@github.com>
Date: Sat, 11 Apr 2026 09:48:50 +0000
Subject: Re: [pgjdbc/pgjdbc] PR #4016: feat: harden protocol reader against desynced streams (#4015)
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This is still WIP, however, I would like to know if we want adding more debug information to "desync detected" exception messages.

For instance, here's one of the failures:

```
        Caused by: java.io.IOException: Protocol error. C-string exceeds remaining message budget of 30 bytes.
            at org.postgresql.core.VisibleBufferedInputStream.scanCStringLength(VisibleBufferedInputStream.java:398)
            at org.postgresql.core.PGStream.receiveBoundedCanonicalStringIfPresent(PGStream.java:711)
            at org.postgresql.core.v3.QueryExecutorImpl.receiveParameterStatus(QueryExecutorImpl.java:3103)
            at org.postgresql.core.v3.QueryExecutorImpl.readStartupMessages(QueryExecutorImpl.java:3080)
            at org.postgresql.core.v3.QueryExecutorImpl.<init>(QueryExecutorImpl.java:237)
```

Should we add something like "the latest bytes are ..."?
I have mixed feelings about it:
1) It might be a security issue (e.g. the bytes might easily contain sensitive info)
2) It might be useless for the analysis
3) It might be helpful for the analysis (e.g. like in https://github.com/pgjdbc/pgjdbc/issues/4015)