Improve GSSAPI Encryption startup comment in libpq
The original comment was a bit confusing, pointed out by Alvaro Herrera.
Thread:
@@ -2800,10 +2800,12 @@ keep_going: /* We will come back to here until there is
#ifdef ENABLE_GSS
/*
- * If GSSAPI is enabled and we have a credential cache, try to
- * set it up before sending startup messages. If it's already
- * operating, don't try SSL and instead just build the startup
- * packet.
+ * If GSSAPI encryption is enabled, then call
+ * pg_GSS_have_cred_cache() which will return true if we can
+ * acquire credentials (and give us a handle to use in
+ * conn->gcred), and then send a packet to the server asking
+ * for GSSAPI Encryption (and skip past SSL negotiation and
+ * regular startup below).
*/
if (conn->try_gss && !conn->gctx)
conn->try_gss = pg_GSS_have_cred_cache(&conn->gcred);
