sslutil: restore old behavior not requiring a hostname argument (issue5210)
This effectively backs out changeset 1fde84d42f9c.
The http library behind ui.http2=true isn't specifying the hostname.
It is the day before the expected 3.8 release and we don't want to ship
a regression.
I'll try to restore this requirement in the 3.9 release cycle as part
of planned improvements to Mercurial's SSL/TLS interactions.
--- a/mercurial/sslutil.py Thu Apr 28 16:38:15 2016 -0500
+++ b/mercurial/sslutil.py Sat Apr 30 09:26:47 2016 -0700
@@ -120,9 +120,6 @@
server (and client) support SNI, this tells the server which certificate
to use.
"""
- if not serverhostname:
- raise error.Abort('serverhostname argument required')
-
# Despite its name, PROTOCOL_SSLv23 selects the highest protocol
# that both ends support, including TLS protocols. On legacy stacks,
# the highest it likely goes in TLS 1.0. On modern stacks, it can