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We are using OpenSSL 1.1.0h on Linux to send operations to LDAP servers. We use SSL_read() to receive the replies on a non-blocking socket. The vast majority of times SSL_read()
returns >0, SSL_ERROR_WANT_READ or SSL_ERROR_WANT_WRITE as per the spec. However we are very occasionally
seeing SSL_ERROR_SYSCALL with errno 11 (EAGAIN) which would seem to be the result of a platform socket read(() or write() when blocking would occur. Is this expected behaviour? We have changed our code to treat this as
SSL_ERROR_WANT_READ or SSL_WANT_WRITE depending on the result of
SSL_want_write(). Are we correct? Regards, John. |
