Message 312956 - Python tracker

Message312956

Author	njs
Recipients	alex, christian.heimes, docs@python, dstufft, janssen, joernheissler, njs
Date	2018-02-26.20:54:16
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1519678456.56.0.467229070634.issue31711@psf.upfronthosting.co.za>
In-reply-to

Content
My point is that SSL_write(3ssl) says "WARNING: When calling SSL_write() with num=0 bytes to be sent the behaviour is undefined." Apparently on the particular openssl you're looking at, it gives SSL_ERROR_SYSCALL with error code == 0 and len == 0, but the openssl devs claim this is some arbitrary thing that shouldn't be depended on. Just as a general principle it would be nice if performing ordinary operations on an SSLSocket from Python did not invoke undefined behavior :-)

Content

My point is that SSL_write(3ssl) says "WARNING: When calling SSL_write() with num=0 bytes to be sent the behaviour is undefined."

Apparently on the particular openssl you're looking at, it gives SSL_ERROR_SYSCALL with error code == 0 and len == 0, but the openssl devs claim this is some arbitrary thing that shouldn't be depended on.

Just as a general principle it would be nice if performing ordinary operations on an SSLSocket from Python did not invoke undefined behavior :-)

History
Date	User	Action	Args
2018-02-26 20:54:16	njs	set	recipients: + njs, janssen, christian.heimes, alex, docs@python, dstufft, joernheissler
2018-02-26 20:54:16	njs	set	messageid: <1519678456.56.0.467229070634.issue31711@psf.upfronthosting.co.za>
2018-02-26 20:54:16	njs	link	issue31711 messages
2018-02-26 20:54:16	njs	create