CSE2410 Fall 2014 Bounce

  // Forcibly clear OpenSSL's error stack on return. This stops stale errors

  // from popping up later in the lifecycle of the SSL connection where they

  // would cause spurious failures. It's a rather blunt method, though.

  // ERR_clear_error() isn't necessarily cheap either.

  struct ClearErrorOnReturn {

    ~ClearErrorOnReturn() { ERR_clear_error(); }

  };

  ClearErrorOnReturn clear_error_on_return;

  (void) &clear_error_on_return;  // Silence unused variable warning.