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libpq: If ALPN is not used, make PQsslAttribute(conn, "alpn") == ""

Heikki Linnakangas <heikki.linnakangas@iki.fi>

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Commit: 3c184092651b0b15ca1207c154ab3fd055e1e9fe
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: 2024-04-29T09:26:46Z
Releases: 17.0 
libpq: If ALPN is not used, make PQsslAttribute(conn, "alpn") == ""

The documentation says that PQsslAttribute(conn, "alpn") returns an
empty string if ALPN is not used, but the code actually returned
NULL. Fix the code to match the documentation.

Reported-by: Michael Paquier
Discussion: https://www.postgresql.org/message-id/ZideNHji0G4gxmc3@paquier.xyz

Files

PathChange+/−
src/bin/psql/command.c modified +1 −1
src/interfaces/libpq/fe-secure-openssl.c modified +1 −1

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