view contrib/hgweb.fcgi @ 36991:d683c7367989

wireproto: explicitly flush stdio to prevent stalls on Windows

This is the key to fixing the hangs on Windows in D2720[1].  I put flushes in a
bunch of other places that didn't help, but I suspect that's more a lack of test
coverage than anything else.

Chasing down stuff like this is pretty painful.  I'm wondering if we can put a
proxy around sys.stderr (and sys.stdout?) on Windows (only when daemonized?)
that will flush on every write (or at least every write with a '\n').

[1] https://www.mercurial-scm.org/pipermail/mercurial-devel/2018-March/113352.html

#!/usr/bin/env python
#
# An example FastCGI script for use with flup, edit as necessary

# Path to repo or hgweb config to serve (see 'hg help hgweb')
config = "/path/to/repo/or/config"

# Uncomment and adjust if Mercurial is not installed system-wide
# (consult "installed modules" path from 'hg debuginstall'):
#import sys; sys.path.insert(0, "/path/to/python/lib")

# Uncomment to send python tracebacks to the browser if an error occurs:
#import cgitb; cgitb.enable()

from mercurial import demandimport; demandimport.enable()
from mercurial.hgweb import hgweb
from flup.server.fcgi import WSGIServer
application = hgweb(config)
WSGIServer(application).run()