17.09.2016 2:05, Andres Freund: [...]
Well, it's not pretty. I quite dislike this bit, and I've complained about it before. But it is noteworthy that it's nearly impossible to hit these days, due to ssl-renegotiation support having been ripped out. That's what could trigger openssl to require writes upon reads.
Looks like it _usually_ happens so that such interdependent reads and writes are unnecessary in the absence of renegotiations. But still [1] instructs to always check for both SSL_ERROR_WANT_READ and SSL_ERROR_WANT_WRITE in all cases. Supposedly it is for a reason. The way it is implemented in fe-secure-openssl.c looks just somewhat unfinished.
I'm wondering is there really something that prevents doing it properly? [1] https://www.openssl.org/docs/manmaster/ssl/SSL_get_error.html Thank you, Regards, Nikolai
Greetings, Andres Freund
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