[openssl/openssl] 72622c: Handle the case where the read buffer is empty but...

[Matt Caswell]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 72622c0b9637667cfef3692e5a63b90d637f0c72
      https://github.com/openssl/openssl/commit/72622c0b9637667cfef3692e5a63b90d637f0c72
  Author: Matt Caswell <matt at openssl.org>
  Date:   2023-08-20 (Sun, 20 Aug 2023)

  Changed paths:
    M ssl/quic/quic_impl.c

  Log Message:
  -----------
  Handle the case where the read buffer is empty but we have received FIN

In some cases where a FIN has been received but with no data quic_read_actual
was failing to raise SSL_ERROR_ZERO_RETURN. This meant that we could end up
blocking in SSL_read(_ex) for too long.

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21780)


  Commit: 0fa6612ed69411ddbfca9e7a2e28e263b7b6d346
      https://github.com/openssl/openssl/commit/0fa6612ed69411ddbfca9e7a2e28e263b7b6d346
  Author: Matt Caswell <matt at openssl.org>
  Date:   2023-08-20 (Sun, 20 Aug 2023)

  Changed paths:
    M test/quicapitest.c

  Log Message:
  -----------
  Test that a thread blocking in SSL_read_ex() will wake up on FIN

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21780)


Compare: https://github.com/openssl/openssl/compare/d561fe5a0aab...0fa6612ed694