New subject: [Issue 10579] tlso_sb_{read,write} don't handle the opposite condition

28 Aug 2026


      https://bugs.openldap.org/show_bug.cgi?id=10579
Issue ID: 10579
           Summary: tlso_sb_{read,write} don't handle the opposite
                    condition
           Product: OpenLDAP
           Version: 2.7.0
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Keywords: needs_review
          Severity: normal
          Priority: ---
         Component: lloadd
          Assignee: bugs@openldap.org
          Reporter: ondra@mistotebe.net
  Target Milestone: ---
With non-blocking BIO (lloadd), a SSL_write can error out with
SSL_ERROR_WANT_READ and vice versa, e.g. at renegotiation or more points if TLS
1.3 is in place. Without knowing that, lloadd (or other applications if we ever
say non-blocking OpenSSL use is supported) cannot make the right decisions,
e.g. close a healthy connection.
Of course lloadd also needs to expect this situation and arm the correct
callback otherwise things get even worse.
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[Issue 10579] New: tlso_sb_{read,write} don't handle the opposite condition