tree f9e216ab4b8b939f08e534aaf08b6ca06a65b366
parent 1e52ecac4dca31d0007a76f0960ea4c8c79ee094
author David Benjamin <davidben@chromium.org> 1421960771 -0500
committer Adam Langley <agl@google.com> 1421964095 +0000

Return SSL_ERROR_SYSCALL on unclean EOF.

This regressed in fcf25833bc4d057377da1ea755f57b2f5126e555. 0 return code on
unclean shutdown means the underlying BIO returned EOF, didn't push any error
code, but we haven't seen close_notify yet. The intent seems to be that you go
check errno or some BIO-specific equivalent if you care about close_notify.

Make sure test code routes all SSL_read return codes through SSL_get_error
since that's supposed to work in all cases.

(Note that rv == 0 can still give SSL_ERROR_SSL if the error queue is not
empty.)

Change-Id: I45bf9614573f876d93419ce169a4e0d9ceea9052
Reviewed-on: https://boringssl-review.googlesource.com/2981
Reviewed-by: Adam Langley <agl@google.com>