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tests: add tests for poorly behaving HTTP server...
tests: add tests for poorly behaving HTTP server I've spent several hours over the past few weeks investigating networking failures involving hg.mozilla.org. As part of this, it has become clear that the Mercurial client's error handling when it encounters network failures is far from robust. To prove this is true, I've devised a battery of tests simulating various network failures, notably premature connection closes. To achieve this, I've implemented an extension that monkeypatches the built-in HTTP server and hooks in at the socket level and allows various events to occur based on config options. For example, you can refuse to accept() a client socket or you can close() the socket after N bytes have been sent or received. The latter effectively simulates an unexpected connection drop (and these occur all the time in the real world). The new test file launches servers exhibiting various "bad" behaviors and points a client at them. As the many TODO comments in the test call attention to, Mercurial often displays unhelpful errors when network-related failures occur. This makes it difficult for users to understand what's going on and difficult for server administrators to pinpoint root causes without packet tracing. Upcoming patches will attempt to fix these error handling deficiencies.

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__init__.py
95 lines | 2.6 KiB | text/x-python | PythonLexer
Eric Hopper
Fixing up comment headers for split up code.
r2391 # hgweb/__init__.py - web interface to a mercurial repository
Eric Hopper
Moving hgweb.py into it's own module in preparation for breaking it up.
r2311 #
# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
# Copyright 2005 Matt Mackall <mpm@selenic.com>
#
Martin Geisler
updated license to be explicit about GPL version 2
r8225 # This software may be used and distributed according to the terms of the
Matt Mackall
Update license to GPLv2+
r10263 # GNU General Public License version 2 or any later version.
Eric Hopper
Moving hgweb.py into it's own module in preparation for breaking it up.
r2311
Yuya Nishihara
hgweb: use absolute_import
r27046 from __future__ import absolute_import
Matt Mackall
hgweb: make hgweb.hgweb a unified interface to hgweb/hgwebdir
r10996 import os
Yuya Nishihara
hgweb: use absolute_import
r27046
Yuya Nishihara
hgweb: move httpservice object from commands module...
r27138 from ..i18n import _
from .. import (
Yuya Nishihara
hgweb: extract factory function of httpservice object...
r27139 error,
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hgweb: move httpservice object from commands module...
r27138 util,
)
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hgweb: use absolute_import
r27046 from . import (
hgweb_mod,
hgwebdir_mod,
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hgweb: move httpservice object from commands module...
r27138 server,
Yuya Nishihara
hgweb: use absolute_import
r27046 )
Matt Mackall
Replace demandload with new demandimport
r3877
Matt Mackall
hgweb: make hgweb.hgweb a unified interface to hgweb/hgwebdir
r10996 def hgweb(config, name=None, baseui=None):
'''create an hgweb wsgi object
config can be one of:
- repo object (single repo view)
- path to repo (single repo view)
- path to config file (multi-repo view)
- dict of virtual:real pairs (multi-repo view)
- list of virtual:real tuples (multi-repo view)
'''
if ((isinstance(config, str) and not os.path.isdir(config)) or
isinstance(config, dict) or isinstance(config, list)):
# create a multi-dir interface
return hgwebdir_mod.hgwebdir(config, baseui=baseui)
return hgweb_mod.hgweb(config, name=name, baseui=baseui)
Matt Mackall
Replace demandload with new demandimport
r3877
Matt Mackall
hgweb: make top-level prototypes mirror their callees
r10992 def hgwebdir(config, baseui=None):
return hgwebdir_mod.hgwebdir(config, baseui=baseui)
Matt Mackall
Replace demandload with new demandimport
r3877
Yuya Nishihara
hgweb: move httpservice object from commands module...
r27138 class httpservice(object):
def __init__(self, ui, app, opts):
self.ui = ui
self.app = app
self.opts = opts
def init(self):
util.setsignalhandler()
self.httpd = server.create_server(self.ui, self.app)
if self.opts['port'] and not self.ui.verbose:
return
if self.httpd.prefix:
prefix = self.httpd.prefix.strip('/') + '/'
else:
prefix = ''
port = ':%d' % self.httpd.port
if port == ':80':
port = ''
bindaddr = self.httpd.addr
if bindaddr == '0.0.0.0':
bindaddr = '*'
elif ':' in bindaddr: # IPv6
bindaddr = '[%s]' % bindaddr
fqaddr = self.httpd.fqaddr
if ':' in fqaddr:
fqaddr = '[%s]' % fqaddr
if self.opts['port']:
write = self.ui.status
else:
write = self.ui.write
write(_('listening at http://%s%s/%s (bound to %s:%d)\n') %
(fqaddr, port, prefix, bindaddr, self.httpd.port))
self.ui.flush() # avoid buffering of status message
def run(self):
self.httpd.serve_forever()
Yuya Nishihara
hgweb: extract factory function of httpservice object...
r27139
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hgweb: extract app factory...
r30508 def createapp(baseui, repo, webconf):
Yuya Nishihara
hgweb: eliminate duck-typing to select hgweb or hgwebdir by command option...
r27181 if webconf:
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hgweb: extract app factory...
r30508 return hgwebdir_mod.hgwebdir(webconf, baseui=baseui)
Yuya Nishihara
hgweb: eliminate duck-typing to select hgweb or hgwebdir by command option...
r27181 else:
Yuya Nishihara
hgweb: extract factory function of httpservice object...
r27139 if not repo:
raise error.RepoError(_("there is no Mercurial repository"
" here (.hg not found)"))
Yuya Nishihara
hgweb: extract app factory...
r30508 return hgweb_mod.hgweb(repo, baseui=baseui)