url: raise error if CONNECT request to proxy was unsuccessful

The deleted code didn’t work on Python 3. On Python 2 (or Python 3 after
adapting it), the function returned in the error case. The subsequent creation
of SSL socket fails during handshake with a nonsense error.

Instead, the user should get an error of what went wrong.

I don’t see how the deleted code would be useful in the error case. The new
code is also closer of what the standard library is doing nowadays that it has
proxy support (which we don’t use in the moment).

In the test, I use port 0 because all the HGPORTs were already taken. In
practice, there should not be any server listening on port 0.

mercurial/url.py

@@ -1,739 +1,667
 # url.py - HTTP handling for mercurial
 #
 # Copyright 2005, 2006, 2007, 2008 Olivia Mackall <[e-mail]>
 # Copyright 2006, 2007 Alexis S. L. Carvalho <[e-mail]>
 # Copyright 2006 Vadim Gelfer <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
 import base64
 import socket
 import sys
 
 from .i18n import _
-from .pycompat import getattr
 from . import (
     encoding,
     error,
     httpconnection as httpconnectionmod,
     keepalive,
     pycompat,
     sslutil,
     urllibcompat,
     util,
 )
 from .utils import (
     stringutil,
     urlutil,
 )
 
 httplib = util.httplib
 stringio = util.stringio
 urlerr = util.urlerr
 urlreq = util.urlreq
 
 
 def escape(s, quote=None):
     """Replace special characters "&", "<" and ">" to HTML-safe sequences.
     If the optional flag quote is true, the quotation mark character (")
     is also translated.
 
     This is the same as cgi.escape in Python, but always operates on
     bytes, whereas cgi.escape in Python 3 only works on unicodes.
     """
     s = s.replace(b"&", b"&amp;")
     s = s.replace(b"<", b"&lt;")
     s = s.replace(b">", b"&gt;")
     if quote:
         s = s.replace(b'"', b"&quot;")
     return s
 
 
 class passwordmgr(object):
     def __init__(self, ui, passwddb):
         self.ui = ui
         self.passwddb = passwddb
 
     def add_password(self, realm, uri, user, passwd):
         return self.passwddb.add_password(realm, uri, user, passwd)
 
     def find_user_password(self, realm, authuri):
         assert isinstance(realm, (type(None), str))
         assert isinstance(authuri, str)
         authinfo = self.passwddb.find_user_password(realm, authuri)
         user, passwd = authinfo
         user, passwd = pycompat.bytesurl(user), pycompat.bytesurl(passwd)
         if user and passwd:
             self._writedebug(user, passwd)
             return (pycompat.strurl(user), pycompat.strurl(passwd))
 
         if not user or not passwd:
             res = httpconnectionmod.readauthforuri(self.ui, authuri, user)
             if res:
                 group, auth = res
                 user, passwd = auth.get(b'username'), auth.get(b'password')
                 self.ui.debug(b"using auth.%s.* for authentication\n" % group)
         if not user or not passwd:
             u = urlutil.url(pycompat.bytesurl(authuri))
             u.query = None
             if not self.ui.interactive():
                 raise error.Abort(
                     _(b'http authorization required for %s')
                     % urlutil.hidepassword(bytes(u))
                 )
 
             self.ui.write(
                 _(b"http authorization required for %s\n")
                 % urlutil.hidepassword(bytes(u))
             )
             self.ui.write(_(b"realm: %s\n") % pycompat.bytesurl(realm))
             if user:
                 self.ui.write(_(b"user: %s\n") % user)
             else:
                 user = self.ui.prompt(_(b"user:"), default=None)
 
             if not passwd:
                 passwd = self.ui.getpass()
 
         # As of Python 3.8, the default implementation of
         # AbstractBasicAuthHandler.retry_http_basic_auth() assumes the user
         # is set if pw is not None. This means (None, str) is not a valid
         # return type of find_user_password().
         if user is None:
             return None, None
 
         self.passwddb.add_password(realm, authuri, user, passwd)
         self._writedebug(user, passwd)
         return (pycompat.strurl(user), pycompat.strurl(passwd))
 
     def _writedebug(self, user, passwd):
         msg = _(b'http auth: user %s, password %s\n')
         self.ui.debug(msg % (user, passwd and b'*' * len(passwd) or b'not set'))
 
     def find_stored_password(self, authuri):
         return self.passwddb.find_user_password(None, authuri)
 
 
 class proxyhandler(urlreq.proxyhandler):
     def __init__(self, ui):
         proxyurl = ui.config(b"http_proxy", b"host") or encoding.environ.get(
             b'http_proxy'
         )
         # XXX proxyauthinfo = None
 
         if proxyurl:
             # proxy can be proper url or host[:port]
             if not (
                 proxyurl.startswith(b'http:') or proxyurl.startswith(b'https:')
             ):
                 proxyurl = b'http://' + proxyurl + b'/'
             proxy = urlutil.url(proxyurl)
             if not proxy.user:
                 proxy.user = ui.config(b"http_proxy", b"user")
                 proxy.passwd = ui.config(b"http_proxy", b"passwd")
 
             # see if we should use a proxy for this url
             no_list = [b"localhost", b"127.0.0.1"]
             no_list.extend(
                 [p.lower() for p in ui.configlist(b"http_proxy", b"no")]
             )
             no_list.extend(
                 [
                     p.strip().lower()
                     for p in encoding.environ.get(b"no_proxy", b'').split(b',')
                     if p.strip()
                 ]
             )
             # "http_proxy.always" config is for running tests on localhost
             if ui.configbool(b"http_proxy", b"always"):
                 self.no_list = []
             else:
                 self.no_list = no_list
 
             # Keys and values need to be str because the standard library
             # expects them to be.
             proxyurl = str(proxy)
             proxies = {'http': proxyurl, 'https': proxyurl}
             ui.debug(
                 b'proxying through %s\n' % urlutil.hidepassword(bytes(proxy))
             )
         else:
             proxies = {}
 
         urlreq.proxyhandler.__init__(self, proxies)
         self.ui = ui
 
     def proxy_open(self, req, proxy, type_):
         host = pycompat.bytesurl(urllibcompat.gethost(req)).split(b':')[0]
         for e in self.no_list:
             if host == e:
                 return None
             if e.startswith(b'*.') and host.endswith(e[2:]):
                 return None
             if e.startswith(b'.') and host.endswith(e[1:]):
                 return None
 
         return urlreq.proxyhandler.proxy_open(self, req, proxy, type_)
 
 
 def _gen_sendfile(orgsend):
     def _sendfile(self, data):
         # send a file
         if isinstance(data, httpconnectionmod.httpsendfile):
             # if auth required, some data sent twice, so rewind here
             data.seek(0)
             for chunk in util.filechunkiter(data):
                 orgsend(self, chunk)
         else:
             orgsend(self, data)
 
     return _sendfile
 
 
 has_https = util.safehasattr(urlreq, b'httpshandler')
 
 
 class httpconnection(keepalive.HTTPConnection):
     # must be able to send big bundle as stream.
     send = _gen_sendfile(keepalive.HTTPConnection.send)
 
-    def getresponse(self):
-        proxyres = getattr(self, 'proxyres', None)
-        if proxyres:
-            if proxyres.will_close:
-                self.close()
-            self.proxyres = None
-            return proxyres
-        return keepalive.HTTPConnection.getresponse(self)
-
 
 # Large parts of this function have their origin from before Python 2.6
 # and could potentially be removed.
 def _generic_start_transaction(handler, h, req):
     tunnel_host = req._tunnel_host
     if tunnel_host:
         if tunnel_host[:7] not in ['http://', 'https:/']:
             tunnel_host = 'https://' + tunnel_host
         new_tunnel = True
     else:
         tunnel_host = urllibcompat.getselector(req)
         new_tunnel = False
 
     if new_tunnel or tunnel_host == urllibcompat.getfullurl(req):  # has proxy
         u = urlutil.url(pycompat.bytesurl(tunnel_host))
         if new_tunnel or u.scheme == b'https':  # only use CONNECT for HTTPS
             h.realhostport = b':'.join([u.host, (u.port or b'443')])
             h.headers = req.headers.copy()
             h.headers.update(handler.parent.addheaders)
             return
 
     h.realhostport = None
     h.headers = None
 
 
 def _generic_proxytunnel(self):
     proxyheaders = {
         pycompat.bytestr(x): pycompat.bytestr(self.headers[x])
         for x in self.headers
         if x.lower().startswith('proxy-')
     }
     self.send(b'CONNECT %s HTTP/1.0\r\n' % self.realhostport)
     for header in pycompat.iteritems(proxyheaders):
         self.send(b'%s: %s\r\n' % header)
     self.send(b'\r\n')
 
     # majority of the following code is duplicated from
     # httplib.HTTPConnection as there are no adequate places to
     # override functions to provide the needed functionality
     # strict was removed in Python 3.4.
     kwargs = {}
     if not pycompat.ispy3:
         kwargs[b'strict'] = self.strict
 
     res = self.response_class(self.sock, method=self._method, **kwargs)
 
     while True:
         version, status, reason = res._read_status()
         if status != httplib.CONTINUE:
             break
         # skip lines that are all whitespace
         list(iter(lambda: res.fp.readline().strip(), b''))
-    res.status = status
-    res.reason = reason.strip()
 
-    if res.status == 200:
+    if status == 200:
         # skip lines until we find a blank line
         list(iter(res.fp.readline, b'\r\n'))
-        return True
-
-    if version == b'HTTP/1.0':
-        res.version = 10
-    elif version.startswith(b'HTTP/1.'):
-        res.version = 11
-    elif version == b'HTTP/0.9':
-        res.version = 9
     else:
-        raise httplib.UnknownProtocol(version)
-
-    if res.version == 9:
-        res.length = None
-        res.chunked = 0
-        res.will_close = 1
-        res.msg = httplib.HTTPMessage(stringio())
-        return False
-
-    res.msg = httplib.HTTPMessage(res.fp)
-    res.msg.fp = None
-
-    # are we using the chunked-style of transfer encoding?
-    trenc = res.msg.getheader(b'transfer-encoding')
-    if trenc and trenc.lower() == b"chunked":
-        res.chunked = 1
-        res.chunk_left = None
-    else:
-        res.chunked = 0
-
-    # will the connection close at the end of the response?
-    res.will_close = res._check_close()
-
-    # do we have a Content-Length?
-    # NOTE: RFC 2616, section 4.4, #3 says we ignore this if
-    # transfer-encoding is "chunked"
-    length = res.msg.getheader(b'content-length')
-    if length and not res.chunked:
-        try:
-            res.length = int(length)
-        except ValueError:
-            res.length = None
-        else:
-            if res.length < 0:  # ignore nonsensical negative lengths
-                res.length = None
-    else:
-        res.length = None
-
-    # does the body have a fixed length? (of zero)
-    if (
-        status == httplib.NO_CONTENT
-        or status == httplib.NOT_MODIFIED
-        or 100 <= status < 200
-        or res._method == b'HEAD'  # 1xx codes
-    ):
-        res.length = 0
-
-    # if the connection remains open, and we aren't using chunked, and
-    # a content-length was not provided, then assume that the connection
-    # WILL close.
-    if not res.will_close and not res.chunked and res.length is None:
-        res.will_close = 1
-
-    self.proxyres = res
-
-    return False
+        self.close()
+        raise socket.error(
+            "Tunnel connection failed: %d %s" % (status, reason.strip())
+        )
 
 
 class httphandler(keepalive.HTTPHandler):
     def http_open(self, req):
         return self.do_open(httpconnection, req)
 
     def _start_transaction(self, h, req):
         _generic_start_transaction(self, h, req)
         return keepalive.HTTPHandler._start_transaction(self, h, req)
 
 
 class logginghttpconnection(keepalive.HTTPConnection):
     def __init__(self, createconn, *args, **kwargs):
         keepalive.HTTPConnection.__init__(self, *args, **kwargs)
         self._create_connection = createconn
 
     if sys.version_info < (2, 7, 7):
         # copied from 2.7.14, since old implementations directly call
         # socket.create_connection()
         def connect(self):
             self.sock = self._create_connection(
                 (self.host, self.port), self.timeout, self.source_address
             )
             if self._tunnel_host:
                 self._tunnel()
 
 
 class logginghttphandler(httphandler):
     """HTTP handler that logs socket I/O."""
 
     def __init__(self, logfh, name, observeropts, timeout=None):
         super(logginghttphandler, self).__init__(timeout=timeout)
 
         self._logfh = logfh
         self._logname = name
         self._observeropts = observeropts
 
     # do_open() calls the passed class to instantiate an HTTPConnection. We
     # pass in a callable method that creates a custom HTTPConnection instance
     # whose callback to create the socket knows how to proxy the socket.
     def http_open(self, req):
         return self.do_open(self._makeconnection, req)
 
     def _makeconnection(self, *args, **kwargs):
         def createconnection(*args, **kwargs):
             sock = socket.create_connection(*args, **kwargs)
             return util.makeloggingsocket(
                 self._logfh, sock, self._logname, **self._observeropts
             )
 
         return logginghttpconnection(createconnection, *args, **kwargs)
 
 
 if has_https:
 
     class httpsconnection(keepalive.HTTPConnection):
         response_class = keepalive.HTTPResponse
         default_port = httplib.HTTPS_PORT
         # must be able to send big bundle as stream.
         send = _gen_sendfile(keepalive.safesend)
         getresponse = keepalive.wrapgetresponse(httplib.HTTPConnection)
 
         def __init__(
             self,
             host,
             port=None,
             key_file=None,
             cert_file=None,
             *args,
             **kwargs
         ):
             keepalive.HTTPConnection.__init__(self, host, port, *args, **kwargs)
             self.key_file = key_file
             self.cert_file = cert_file
 
         def connect(self):
             self.sock = socket.create_connection((self.host, self.port))
 
             host = self.host
             if self.realhostport:  # use CONNECT proxy
                 _generic_proxytunnel(self)
                 host = self.realhostport.rsplit(b':', 1)[0]
             self.sock = sslutil.wrapsocket(
                 self.sock,
                 self.key_file,
                 self.cert_file,
                 ui=self.ui,
                 serverhostname=host,
             )
             sslutil.validatesocket(self.sock)
 
     class httpshandler(keepalive.KeepAliveHandler, urlreq.httpshandler):
         def __init__(self, ui, timeout=None):
             keepalive.KeepAliveHandler.__init__(self, timeout=timeout)
             urlreq.httpshandler.__init__(self)
             self.ui = ui
             self.pwmgr = passwordmgr(self.ui, self.ui.httppasswordmgrdb)
 
         def _start_transaction(self, h, req):
             _generic_start_transaction(self, h, req)
             return keepalive.KeepAliveHandler._start_transaction(self, h, req)
 
         def https_open(self, req):
             # urllibcompat.getfullurl() does not contain credentials
             # and we may need them to match the certificates.
             url = urllibcompat.getfullurl(req)
             user, password = self.pwmgr.find_stored_password(url)
             res = httpconnectionmod.readauthforuri(self.ui, url, user)
             if res:
                 group, auth = res
                 self.auth = auth
                 self.ui.debug(b"using auth.%s.* for authentication\n" % group)
             else:
                 self.auth = None
             return self.do_open(self._makeconnection, req)
 
         def _makeconnection(self, host, port=None, *args, **kwargs):
             keyfile = None
             certfile = None
 
             if len(args) >= 1:  # key_file
                 keyfile = args[0]
             if len(args) >= 2:  # cert_file
                 certfile = args[1]
             args = args[2:]
 
             # if the user has specified different key/cert files in
             # hgrc, we prefer these
             if self.auth and b'key' in self.auth and b'cert' in self.auth:
                 keyfile = self.auth[b'key']
                 certfile = self.auth[b'cert']
 
             conn = httpsconnection(
                 host, port, keyfile, certfile, *args, **kwargs
             )
             conn.ui = self.ui
             return conn
 
 
 class httpdigestauthhandler(urlreq.httpdigestauthhandler):
     def __init__(self, *args, **kwargs):
         urlreq.httpdigestauthhandler.__init__(self, *args, **kwargs)
         self.retried_req = None
 
     def reset_retry_count(self):
         # Python 2.6.5 will call this on 401 or 407 errors and thus loop
         # forever. We disable reset_retry_count completely and reset in
         # http_error_auth_reqed instead.
         pass
 
     def http_error_auth_reqed(self, auth_header, host, req, headers):
         # Reset the retry counter once for each request.
         if req is not self.retried_req:
             self.retried_req = req
             self.retried = 0
         return urlreq.httpdigestauthhandler.http_error_auth_reqed(
             self, auth_header, host, req, headers
         )
 
 
 class httpbasicauthhandler(urlreq.httpbasicauthhandler):
     def __init__(self, *args, **kwargs):
         self.auth = None
         urlreq.httpbasicauthhandler.__init__(self, *args, **kwargs)
         self.retried_req = None
 
     def http_request(self, request):
         if self.auth:
             request.add_unredirected_header(self.auth_header, self.auth)
 
         return request
 
     def https_request(self, request):
         if self.auth:
             request.add_unredirected_header(self.auth_header, self.auth)
 
         return request
 
     def reset_retry_count(self):
         # Python 2.6.5 will call this on 401 or 407 errors and thus loop
         # forever. We disable reset_retry_count completely and reset in
         # http_error_auth_reqed instead.
         pass
 
     def http_error_auth_reqed(self, auth_header, host, req, headers):
         # Reset the retry counter once for each request.
         if req is not self.retried_req:
             self.retried_req = req
             self.retried = 0
         return urlreq.httpbasicauthhandler.http_error_auth_reqed(
             self, auth_header, host, req, headers
         )
 
     def retry_http_basic_auth(self, host, req, realm):
         user, pw = self.passwd.find_user_password(
             realm, urllibcompat.getfullurl(req)
         )
         if pw is not None:
             raw = b"%s:%s" % (pycompat.bytesurl(user), pycompat.bytesurl(pw))
             auth = 'Basic %s' % pycompat.strurl(base64.b64encode(raw).strip())
             if req.get_header(self.auth_header, None) == auth:
                 return None
             self.auth = auth
             req.add_unredirected_header(self.auth_header, auth)
             return self.parent.open(req)
         else:
             return None
 
 
 class cookiehandler(urlreq.basehandler):
     def __init__(self, ui):
         self.cookiejar = None
 
         cookiefile = ui.config(b'auth', b'cookiefile')
         if not cookiefile:
             return
 
         cookiefile = util.expandpath(cookiefile)
         try:
             cookiejar = util.cookielib.MozillaCookieJar(
                 pycompat.fsdecode(cookiefile)
             )
             cookiejar.load()
             self.cookiejar = cookiejar
         except util.cookielib.LoadError as e:
             ui.warn(
                 _(
                     b'(error loading cookie file %s: %s; continuing without '
                     b'cookies)\n'
                 )
                 % (cookiefile, stringutil.forcebytestr(e))
             )
 
     def http_request(self, request):
         if self.cookiejar:
             self.cookiejar.add_cookie_header(request)
 
         return request
 
     def https_request(self, request):
         if self.cookiejar:
             self.cookiejar.add_cookie_header(request)
 
         return request
 
 
 handlerfuncs = []
 
 
 def opener(
     ui,
     authinfo=None,
     useragent=None,
     loggingfh=None,
     loggingname=b's',
     loggingopts=None,
     sendaccept=True,
 ):
     """
     construct an opener suitable for urllib2
     authinfo will be added to the password manager
 
     The opener can be configured to log socket events if the various
     ``logging*`` arguments are specified.
 
     ``loggingfh`` denotes a file object to log events to.
     ``loggingname`` denotes the name of the to print when logging.
     ``loggingopts`` is a dict of keyword arguments to pass to the constructed
     ``util.socketobserver`` instance.
 
     ``sendaccept`` allows controlling whether the ``Accept`` request header
     is sent. The header is sent by default.
     """
     timeout = ui.configwith(float, b'http', b'timeout')
     handlers = []
 
     if loggingfh:
         handlers.append(
             logginghttphandler(
                 loggingfh, loggingname, loggingopts or {}, timeout=timeout
             )
         )
         # We don't yet support HTTPS when logging I/O. If we attempt to open
         # an HTTPS URL, we'll likely fail due to unknown protocol.
 
     else:
         handlers.append(httphandler(timeout=timeout))
         if has_https:
             handlers.append(httpshandler(ui, timeout=timeout))
 
     handlers.append(proxyhandler(ui))
 
     passmgr = passwordmgr(ui, ui.httppasswordmgrdb)
     if authinfo is not None:
         realm, uris, user, passwd = authinfo
         saveduser, savedpass = passmgr.find_stored_password(uris[0])
         if user != saveduser or passwd:
             passmgr.add_password(realm, uris, user, passwd)
         ui.debug(
             b'http auth: user %s, password %s\n'
             % (user, passwd and b'*' * len(passwd) or b'not set')
         )
 
     handlers.extend(
         (httpbasicauthhandler(passmgr), httpdigestauthhandler(passmgr))
     )
     handlers.extend([h(ui, passmgr) for h in handlerfuncs])
     handlers.append(cookiehandler(ui))
     opener = urlreq.buildopener(*handlers)
 
     # keepalive.py's handlers will populate these attributes if they exist.
     opener.requestscount = 0
     opener.sentbytescount = 0
     opener.receivedbytescount = 0
 
     # The user agent should should *NOT* be used by servers for e.g.
     # protocol detection or feature negotiation: there are other
     # facilities for that.
     #
     # "mercurial/proto-1.0" was the original user agent string and
     # exists for backwards compatibility reasons.
     #
     # The "(Mercurial %s)" string contains the distribution
     # name and version. Other client implementations should choose their
     # own distribution name. Since servers should not be using the user
     # agent string for anything, clients should be able to define whatever
     # user agent they deem appropriate.
     #
     # The custom user agent is for lfs, because unfortunately some servers
     # do look at this value.
     if not useragent:
         agent = b'mercurial/proto-1.0 (Mercurial %s)' % util.version()
         opener.addheaders = [('User-agent', pycompat.sysstr(agent))]
     else:
         opener.addheaders = [('User-agent', pycompat.sysstr(useragent))]
 
     # This header should only be needed by wire protocol requests. But it has
     # been sent on all requests since forever. We keep sending it for backwards
     # compatibility reasons. Modern versions of the wire protocol use
     # X-HgProto-<N> for advertising client support.
     if sendaccept:
         opener.addheaders.append(('Accept', 'application/mercurial-0.1'))
 
     return opener
 
 
 def open(ui, url_, data=None, sendaccept=True):
     u = urlutil.url(url_)
     if u.scheme:
         u.scheme = u.scheme.lower()
         url_, authinfo = u.authinfo()
     else:
         path = util.normpath(util.abspath(url_))
         url_ = b'file://' + pycompat.bytesurl(
             urlreq.pathname2url(pycompat.fsdecode(path))
         )
         authinfo = None
     return opener(ui, authinfo, sendaccept=sendaccept).open(
         pycompat.strurl(url_), data
     )
 
 
 def wrapresponse(resp):
     """Wrap a response object with common error handlers.
 
     This ensures that any I/O from any consumer raises the appropriate
     error and messaging.
     """
     origread = resp.read
 
     class readerproxy(resp.__class__):
         def read(self, size=None):
             try:
                 return origread(size)
             except httplib.IncompleteRead as e:
                 # e.expected is an integer if length known or None otherwise.
                 if e.expected:
                     got = len(e.partial)
                     total = e.expected + got
                     msg = _(
                         b'HTTP request error (incomplete response; '
                         b'expected %d bytes got %d)'
                     ) % (total, got)
                 else:
                     msg = _(b'HTTP request error (incomplete response)')
 
                 raise error.PeerTransportError(
                     msg,
                     hint=_(
                         b'this may be an intermittent network failure; '
                         b'if the error persists, consider contacting the '
                         b'network or server operator'
                     ),
                 )
             except httplib.HTTPException as e:
                 raise error.PeerTransportError(
                     _(b'HTTP request error (%s)') % e,
                     hint=_(
                         b'this may be an intermittent network failure; '
                         b'if the error persists, consider contacting the '
                         b'network or server operator'
                     ),
                 )
 
     resp.__class__ = readerproxy

tests/test-https.t

@@ -1,554 +1,561
 #require serve ssl
 
 Proper https client requires the built-in ssl from Python 2.6.
 
 Disable the system configuration which may set stricter TLS requirements.
 This test expects that legacy TLS versions are supported.
 
   $ OPENSSL_CONF=
   $ export OPENSSL_CONF
 
 Make server certificates:
 
   $ CERTSDIR="$TESTDIR/sslcerts"
   $ cat "$CERTSDIR/priv.pem" "$CERTSDIR/pub.pem" >> server.pem
   $ PRIV=`pwd`/server.pem
   $ cat "$CERTSDIR/priv.pem" "$CERTSDIR/pub-not-yet.pem" > server-not-yet.pem
   $ cat "$CERTSDIR/priv.pem" "$CERTSDIR/pub-expired.pem" > server-expired.pem
 
   $ hg init test
   $ cd test
   $ echo foo>foo
   $ mkdir foo.d foo.d/bAr.hg.d foo.d/baR.d.hg
   $ echo foo>foo.d/foo
   $ echo bar>foo.d/bAr.hg.d/BaR
   $ echo bar>foo.d/baR.d.hg/bAR
   $ hg commit -A -m 1
   adding foo
   adding foo.d/bAr.hg.d/BaR
   adding foo.d/baR.d.hg/bAR
   adding foo.d/foo
   $ hg serve -p $HGPORT -d --pid-file=../hg0.pid --certificate=$PRIV
   $ cat ../hg0.pid >> $DAEMON_PIDS
 
 cacert not found
 
   $ hg in --config web.cacerts=no-such.pem https://localhost:$HGPORT/
   abort: could not find web.cacerts: no-such.pem
   [255]
 
 Test server address cannot be reused
 
   $ hg serve -p $HGPORT --certificate=$PRIV 2>&1
   abort: cannot start server at 'localhost:$HGPORT': $EADDRINUSE$
   [255]
 
   $ cd ..
 
 Our test cert is not signed by a trusted CA. It should fail to verify if
 we are able to load CA certs.
 
 #if no-defaultcacertsloaded
   $ hg clone https://localhost:$HGPORT/ copy-pull
   (an attempt was made to load CA certificates but none were loaded; see https://mercurial-scm.org/wiki/SecureConnections for how to configure Mercurial to avoid this error)
   abort: error: *certificate verify failed* (glob)
   [100]
 #endif
 
 #if defaultcacertsloaded
   $ hg clone https://localhost:$HGPORT/ copy-pull
   (the full certificate chain may not be available locally; see "hg help debugssl") (windows !)
   abort: error: *certificate verify failed* (glob)
   [100]
 #endif
 
 Specifying a per-host certificate file that doesn't exist will abort.  The full
 C:/path/to/msysroot will print on Windows.
 
   $ hg --config hostsecurity.localhost:verifycertsfile=/does/not/exist clone https://localhost:$HGPORT/
   abort: path specified by hostsecurity.localhost:verifycertsfile does not exist: */does/not/exist (glob)
   [255]
 
 A malformed per-host certificate file will raise an error
 
   $ echo baddata > badca.pem
   $ hg --config hostsecurity.localhost:verifycertsfile=badca.pem clone https://localhost:$HGPORT/
   abort: error loading CA file badca.pem: * (glob)
   (file is empty or malformed?)
   [255]
 
 A per-host certificate mismatching the server will fail verification
 
 (modern ssl is able to discern whether the loaded cert is a CA cert)
   $ hg --config hostsecurity.localhost:verifycertsfile="$CERTSDIR/client-cert.pem" clone https://localhost:$HGPORT/
   (an attempt was made to load CA certificates but none were loaded; see https://mercurial-scm.org/wiki/SecureConnections for how to configure Mercurial to avoid this error)
   (the full certificate chain may not be available locally; see "hg help debugssl") (windows !)
   abort: error: *certificate verify failed* (glob)
   [100]
 
 A per-host certificate matching the server's cert will be accepted
 
   $ hg --config hostsecurity.localhost:verifycertsfile="$CERTSDIR/pub.pem" clone -U https://localhost:$HGPORT/ perhostgood1
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 4 changes to 4 files
   new changesets 8b6053c928fe
 
 A per-host certificate with multiple certs and one matching will be accepted
 
   $ cat "$CERTSDIR/client-cert.pem" "$CERTSDIR/pub.pem" > perhost.pem
   $ hg --config hostsecurity.localhost:verifycertsfile=perhost.pem clone -U https://localhost:$HGPORT/ perhostgood2
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 4 changes to 4 files
   new changesets 8b6053c928fe
 
 Defining both per-host certificate and a fingerprint will print a warning
 
   $ hg --config hostsecurity.localhost:verifycertsfile="$CERTSDIR/pub.pem" --config hostsecurity.localhost:fingerprints=sha1:ecd87cd6b386d04fc1b8b41c9d8f5e168eef1c03 clone -U https://localhost:$HGPORT/ caandfingerwarning
   (hostsecurity.localhost:verifycertsfile ignored when host fingerprints defined; using host fingerprints for verification)
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 4 changes to 4 files
   new changesets 8b6053c928fe
 
   $ DISABLECACERTS="--config devel.disableloaddefaultcerts=true"
 
 Inability to verify peer certificate will result in abort
 
   $ hg clone https://localhost:$HGPORT/ copy-pull $DISABLECACERTS
   abort: unable to verify security of localhost (no loaded CA certificates); refusing to connect
   (see https://mercurial-scm.org/wiki/SecureConnections for how to configure Mercurial to avoid this error or set hostsecurity.localhost:fingerprints=sha256:20:de:b3:ad:b4:cd:a5:42:f0:74:41:1c:a2:70:1e:da:6e:c0:5c:16:9e:e7:22:0f:f1:b7:e5:6e:e4:92:af:7e to trust this server)
   [150]
 
   $ hg clone --insecure https://localhost:$HGPORT/ copy-pull
   warning: connection security to localhost is disabled per current settings; communication is susceptible to eavesdropping and tampering
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 4 changes to 4 files
   new changesets 8b6053c928fe
   updating to branch default
   4 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg verify -R copy-pull
   checking changesets
   checking manifests
   crosschecking files in changesets and manifests
   checking files
   checked 1 changesets with 4 changes to 4 files
   $ cd test
   $ echo bar > bar
   $ hg commit -A -d '1 0' -m 2
   adding bar
   $ cd ..
 
 pull without cacert
 
   $ cd copy-pull
   $ cat >> .hg/hgrc <<EOF
   > [hooks]
   > changegroup = sh -c "printenv.py --line changegroup"
   > EOF
   $ hg pull $DISABLECACERTS
   pulling from https://localhost:$HGPORT/
   abort: unable to verify security of localhost (no loaded CA certificates); refusing to connect
   (see https://mercurial-scm.org/wiki/SecureConnections for how to configure Mercurial to avoid this error or set hostsecurity.localhost:fingerprints=sha256:20:de:b3:ad:b4:cd:a5:42:f0:74:41:1c:a2:70:1e:da:6e:c0:5c:16:9e:e7:22:0f:f1:b7:e5:6e:e4:92:af:7e to trust this server)
   [150]
 
   $ hg pull --insecure
   pulling from https://localhost:$HGPORT/
   warning: connection security to localhost is disabled per current settings; communication is susceptible to eavesdropping and tampering
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   new changesets 5fed3813f7f5
   changegroup hook: HG_HOOKNAME=changegroup
   HG_HOOKTYPE=changegroup
   HG_NODE=5fed3813f7f5e1824344fdc9cf8f63bb662c292d
   HG_NODE_LAST=5fed3813f7f5e1824344fdc9cf8f63bb662c292d
   HG_SOURCE=pull
   HG_TXNID=TXN:$ID$
   HG_TXNNAME=pull
   https://localhost:$HGPORT/
   HG_URL=https://localhost:$HGPORT/
   
   (run 'hg update' to get a working copy)
   $ cd ..
 
 cacert configured in local repo
 
   $ cp copy-pull/.hg/hgrc copy-pull/.hg/hgrc.bu
   $ echo "[web]" >> copy-pull/.hg/hgrc
   $ echo "cacerts=$CERTSDIR/pub.pem" >> copy-pull/.hg/hgrc
   $ hg -R copy-pull pull
   pulling from https://localhost:$HGPORT/
   searching for changes
   no changes found
   $ mv copy-pull/.hg/hgrc.bu copy-pull/.hg/hgrc
 
 cacert configured globally, also testing expansion of environment
 variables in the filename
 
   $ echo "[web]" >> $HGRCPATH
   $ echo 'cacerts=$P/pub.pem' >> $HGRCPATH
   $ P="$CERTSDIR" hg -R copy-pull pull
   pulling from https://localhost:$HGPORT/
   searching for changes
   no changes found
   $ P="$CERTSDIR" hg -R copy-pull pull --insecure
   pulling from https://localhost:$HGPORT/
   warning: connection security to localhost is disabled per current settings; communication is susceptible to eavesdropping and tampering
   searching for changes
   no changes found
 
 empty cacert file
 
   $ touch emptycafile
 
   $ hg --config web.cacerts=emptycafile -R copy-pull pull
   pulling from https://localhost:$HGPORT/
   abort: error loading CA file emptycafile: * (glob)
   (file is empty or malformed?)
   [255]
 
 cacert mismatch
 
   $ hg -R copy-pull pull --config web.cacerts="$CERTSDIR/pub.pem" \
   > https://$LOCALIP:$HGPORT/
   pulling from https://*:$HGPORT/ (glob)
   abort: $LOCALIP certificate error: certificate is for localhost (glob)
   (set hostsecurity.$LOCALIP:certfingerprints=sha256:20:de:b3:ad:b4:cd:a5:42:f0:74:41:1c:a2:70:1e:da:6e:c0:5c:16:9e:e7:22:0f:f1:b7:e5:6e:e4:92:af:7e config setting or use --insecure to connect insecurely)
   [150]
   $ hg -R copy-pull pull --config web.cacerts="$CERTSDIR/pub.pem" \
   > https://$LOCALIP:$HGPORT/ --insecure
   pulling from https://*:$HGPORT/ (glob)
   warning: connection security to $LOCALIP is disabled per current settings; communication is susceptible to eavesdropping and tampering (glob)
   searching for changes
   no changes found
   $ hg -R copy-pull pull --config web.cacerts="$CERTSDIR/pub-other.pem"
   pulling from https://localhost:$HGPORT/
   (the full certificate chain may not be available locally; see "hg help debugssl") (windows !)
   abort: error: *certificate verify failed* (glob)
   [100]
   $ hg -R copy-pull pull --config web.cacerts="$CERTSDIR/pub-other.pem" \
   > --insecure
   pulling from https://localhost:$HGPORT/
   warning: connection security to localhost is disabled per current settings; communication is susceptible to eavesdropping and tampering
   searching for changes
   no changes found
 
 Test server cert which isn't valid yet
 
   $ hg serve -R test -p $HGPORT1 -d --pid-file=hg1.pid --certificate=server-not-yet.pem
   $ cat hg1.pid >> $DAEMON_PIDS
   $ hg -R copy-pull pull --config web.cacerts="$CERTSDIR/pub-not-yet.pem" \
   > https://localhost:$HGPORT1/
   pulling from https://localhost:$HGPORT1/
   (the full certificate chain may not be available locally; see "hg help debugssl") (windows !)
   abort: error: *certificate verify failed* (glob)
   [100]
 
 Test server cert which no longer is valid
 
   $ hg serve -R test -p $HGPORT2 -d --pid-file=hg2.pid --certificate=server-expired.pem
   $ cat hg2.pid >> $DAEMON_PIDS
   $ hg -R copy-pull pull --config web.cacerts="$CERTSDIR/pub-expired.pem" \
   > https://localhost:$HGPORT2/
   pulling from https://localhost:$HGPORT2/
   (the full certificate chain may not be available locally; see "hg help debugssl") (windows !)
   abort: error: *certificate verify failed* (glob)
   [100]
 
 Setting ciphers to an invalid value aborts
   $ P="$CERTSDIR" hg --config hostsecurity.ciphers=invalid -R copy-pull id https://localhost:$HGPORT/
   abort: could not set ciphers: No cipher can be selected.
   (change cipher string (invalid) in config)
   [255]
 
   $ P="$CERTSDIR" hg --config hostsecurity.localhost:ciphers=invalid -R copy-pull id https://localhost:$HGPORT/
   abort: could not set ciphers: No cipher can be selected.
   (change cipher string (invalid) in config)
   [255]
 
 Changing the cipher string works
 
   $ P="$CERTSDIR" hg --config hostsecurity.ciphers=HIGH -R copy-pull id https://localhost:$HGPORT/
   5fed3813f7f5
 
 Fingerprints
 
 - works without cacerts (hostfingerprints)
   $ hg -R copy-pull id https://localhost:$HGPORT/ --insecure --config hostfingerprints.localhost=ec:d8:7c:d6:b3:86:d0:4f:c1:b8:b4:1c:9d:8f:5e:16:8e:ef:1c:03
   (SHA-1 fingerprint for localhost found in legacy [hostfingerprints] section; if you trust this fingerprint, remove the old SHA-1 fingerprint from [hostfingerprints] and add the following entry to the new [hostsecurity] section: localhost:fingerprints=sha256:20:de:b3:ad:b4:cd:a5:42:f0:74:41:1c:a2:70:1e:da:6e:c0:5c:16:9e:e7:22:0f:f1:b7:e5:6e:e4:92:af:7e)
   5fed3813f7f5
 
 - works without cacerts (hostsecurity)
   $ hg -R copy-pull id https://localhost:$HGPORT/ --config hostsecurity.localhost:fingerprints=sha1:ecd87cd6b386d04fc1b8b41c9d8f5e168eef1c03
   5fed3813f7f5
 
   $ hg -R copy-pull id https://localhost:$HGPORT/ --config hostsecurity.localhost:fingerprints=sha256:20:de:b3:ad:b4:cd:a5:42:f0:74:41:1c:a2:70:1e:da:6e:c0:5c:16:9e:e7:22:0f:f1:b7:e5:6e:e4:92:af:7e
   5fed3813f7f5
 
 - multiple fingerprints specified and first matches
   $ hg --config 'hostfingerprints.localhost=ecd87cd6b386d04fc1b8b41c9d8f5e168eef1c03, deadbeefdeadbeefdeadbeefdeadbeefdeadbeef' -R copy-pull id https://localhost:$HGPORT/ --insecure
   (SHA-1 fingerprint for localhost found in legacy [hostfingerprints] section; if you trust this fingerprint, remove the old SHA-1 fingerprint from [hostfingerprints] and add the following entry to the new [hostsecurity] section: localhost:fingerprints=sha256:20:de:b3:ad:b4:cd:a5:42:f0:74:41:1c:a2:70:1e:da:6e:c0:5c:16:9e:e7:22:0f:f1:b7:e5:6e:e4:92:af:7e)
   5fed3813f7f5
 
   $ hg --config 'hostsecurity.localhost:fingerprints=sha1:ecd87cd6b386d04fc1b8b41c9d8f5e168eef1c03, sha1:deadbeefdeadbeefdeadbeefdeadbeefdeadbeef' -R copy-pull id https://localhost:$HGPORT/
   5fed3813f7f5
 
 - multiple fingerprints specified and last matches
   $ hg --config 'hostfingerprints.localhost=deadbeefdeadbeefdeadbeefdeadbeefdeadbeef, ecd87cd6b386d04fc1b8b41c9d8f5e168eef1c03' -R copy-pull id https://localhost:$HGPORT/ --insecure
   (SHA-1 fingerprint for localhost found in legacy [hostfingerprints] section; if you trust this fingerprint, remove the old SHA-1 fingerprint from [hostfingerprints] and add the following entry to the new [hostsecurity] section: localhost:fingerprints=sha256:20:de:b3:ad:b4:cd:a5:42:f0:74:41:1c:a2:70:1e:da:6e:c0:5c:16:9e:e7:22:0f:f1:b7:e5:6e:e4:92:af:7e)
   5fed3813f7f5
 
   $ hg --config 'hostsecurity.localhost:fingerprints=sha1:deadbeefdeadbeefdeadbeefdeadbeefdeadbeef, sha1:ecd87cd6b386d04fc1b8b41c9d8f5e168eef1c03' -R copy-pull id https://localhost:$HGPORT/
   5fed3813f7f5
 
 - multiple fingerprints specified and none match
 
   $ hg --config 'hostfingerprints.localhost=deadbeefdeadbeefdeadbeefdeadbeefdeadbeef, aeadbeefdeadbeefdeadbeefdeadbeefdeadbeef' -R copy-pull id https://localhost:$HGPORT/ --insecure
   abort: certificate for localhost has unexpected fingerprint ec:d8:7c:d6:b3:86:d0:4f:c1:b8:b4:1c:9d:8f:5e:16:8e:ef:1c:03
   (check hostfingerprint configuration)
   [150]
 
   $ hg --config 'hostsecurity.localhost:fingerprints=sha1:deadbeefdeadbeefdeadbeefdeadbeefdeadbeef, sha1:aeadbeefdeadbeefdeadbeefdeadbeefdeadbeef' -R copy-pull id https://localhost:$HGPORT/
   abort: certificate for localhost has unexpected fingerprint sha1:ec:d8:7c:d6:b3:86:d0:4f:c1:b8:b4:1c:9d:8f:5e:16:8e:ef:1c:03
   (check hostsecurity configuration)
   [150]
 
 - fails when cert doesn't match hostname (port is ignored)
   $ hg -R copy-pull id https://localhost:$HGPORT1/ --config hostfingerprints.localhost=ecd87cd6b386d04fc1b8b41c9d8f5e168eef1c03
   abort: certificate for localhost has unexpected fingerprint f4:2f:5a:0c:3e:52:5b:db:e7:24:a8:32:1d:18:97:6d:69:b5:87:84
   (check hostfingerprint configuration)
   [150]
 
 
 - ignores that certificate doesn't match hostname
   $ hg -R copy-pull id https://$LOCALIP:$HGPORT/ --config hostfingerprints.$LOCALIP=ecd87cd6b386d04fc1b8b41c9d8f5e168eef1c03
   (SHA-1 fingerprint for $LOCALIP found in legacy [hostfingerprints] section; if you trust this fingerprint, remove the old SHA-1 fingerprint from [hostfingerprints] and add the following entry to the new [hostsecurity] section: $LOCALIP:fingerprints=sha256:20:de:b3:ad:b4:cd:a5:42:f0:74:41:1c:a2:70:1e:da:6e:c0:5c:16:9e:e7:22:0f:f1:b7:e5:6e:e4:92:af:7e)
   5fed3813f7f5
 
 Ports used by next test. Kill servers.
 
   $ killdaemons.py hg0.pid
   $ killdaemons.py hg1.pid
   $ killdaemons.py hg2.pid
 
 #if tls1.2
 Start servers running supported TLS versions
 
   $ cd test
   $ hg serve -p $HGPORT -d --pid-file=../hg0.pid --certificate=$PRIV \
   > --config devel.serverexactprotocol=tls1.0
   $ cat ../hg0.pid >> $DAEMON_PIDS
   $ hg serve -p $HGPORT1 -d --pid-file=../hg1.pid --certificate=$PRIV \
   > --config devel.serverexactprotocol=tls1.1
   $ cat ../hg1.pid >> $DAEMON_PIDS
   $ hg serve -p $HGPORT2 -d --pid-file=../hg2.pid --certificate=$PRIV \
   > --config devel.serverexactprotocol=tls1.2
   $ cat ../hg2.pid >> $DAEMON_PIDS
   $ cd ..
 
 Clients talking same TLS versions work
 
   $ P="$CERTSDIR" hg --config hostsecurity.minimumprotocol=tls1.0 id https://localhost:$HGPORT/
   5fed3813f7f5
   $ P="$CERTSDIR" hg --config hostsecurity.minimumprotocol=tls1.1 id https://localhost:$HGPORT1/
   5fed3813f7f5
   $ P="$CERTSDIR" hg --config hostsecurity.minimumprotocol=tls1.2 id https://localhost:$HGPORT2/
   5fed3813f7f5
 
 Clients requiring newer TLS version than what server supports fail
 
   $ P="$CERTSDIR" hg id https://localhost:$HGPORT/
   (could not negotiate a common security protocol (tls1.1+) with localhost; the likely cause is Mercurial is configured to be more secure than the server can support)
   (consider contacting the operator of this server and ask them to support modern TLS protocol versions; or, set hostsecurity.localhost:minimumprotocol=tls1.0 to allow use of legacy, less secure protocols when communicating with this server)
   (see https://mercurial-scm.org/wiki/SecureConnections for more info)
   abort: error: .*(unsupported protocol|wrong ssl version).* (re)
   [100]
 
   $ P="$CERTSDIR" hg --config hostsecurity.minimumprotocol=tls1.1 id https://localhost:$HGPORT/
   (could not negotiate a common security protocol (tls1.1+) with localhost; the likely cause is Mercurial is configured to be more secure than the server can support)
   (consider contacting the operator of this server and ask them to support modern TLS protocol versions; or, set hostsecurity.localhost:minimumprotocol=tls1.0 to allow use of legacy, less secure protocols when communicating with this server)
   (see https://mercurial-scm.org/wiki/SecureConnections for more info)
   abort: error: .*(unsupported protocol|wrong ssl version).* (re)
   [100]
   $ P="$CERTSDIR" hg --config hostsecurity.minimumprotocol=tls1.2 id https://localhost:$HGPORT/
   (could not negotiate a common security protocol (tls1.2+) with localhost; the likely cause is Mercurial is configured to be more secure than the server can support)
   (consider contacting the operator of this server and ask them to support modern TLS protocol versions; or, set hostsecurity.localhost:minimumprotocol=tls1.0 to allow use of legacy, less secure protocols when communicating with this server)
   (see https://mercurial-scm.org/wiki/SecureConnections for more info)
   abort: error: .*(unsupported protocol|wrong ssl version).* (re)
   [100]
   $ P="$CERTSDIR" hg --config hostsecurity.minimumprotocol=tls1.2 id https://localhost:$HGPORT1/
   (could not negotiate a common security protocol (tls1.2+) with localhost; the likely cause is Mercurial is configured to be more secure than the server can support)
   (consider contacting the operator of this server and ask them to support modern TLS protocol versions; or, set hostsecurity.localhost:minimumprotocol=tls1.0 to allow use of legacy, less secure protocols when communicating with this server)
   (see https://mercurial-scm.org/wiki/SecureConnections for more info)
   abort: error: .*(unsupported protocol|wrong ssl version).* (re)
   [100]
 
 --insecure will allow TLS 1.0 connections and override configs
 
   $ hg --config hostsecurity.minimumprotocol=tls1.2 id --insecure https://localhost:$HGPORT1/
   warning: connection security to localhost is disabled per current settings; communication is susceptible to eavesdropping and tampering
   5fed3813f7f5
 
 The per-host config option overrides the default
 
   $ P="$CERTSDIR" hg id https://localhost:$HGPORT/ \
   > --config hostsecurity.minimumprotocol=tls1.2 \
   > --config hostsecurity.localhost:minimumprotocol=tls1.0
   5fed3813f7f5
 
 The per-host config option by itself works
 
   $ P="$CERTSDIR" hg id https://localhost:$HGPORT/ \
   > --config hostsecurity.localhost:minimumprotocol=tls1.2
   (could not negotiate a common security protocol (tls1.2+) with localhost; the likely cause is Mercurial is configured to be more secure than the server can support)
   (consider contacting the operator of this server and ask them to support modern TLS protocol versions; or, set hostsecurity.localhost:minimumprotocol=tls1.0 to allow use of legacy, less secure protocols when communicating with this server)
   (see https://mercurial-scm.org/wiki/SecureConnections for more info)
   abort: error: .*(unsupported protocol|wrong ssl version).* (re)
   [100]
 
 .hg/hgrc file [hostsecurity] settings are applied to remote ui instances (issue5305)
 
   $ cat >> copy-pull/.hg/hgrc << EOF
   > [hostsecurity]
   > localhost:minimumprotocol=tls1.2
   > EOF
   $ P="$CERTSDIR" hg -R copy-pull id https://localhost:$HGPORT/
   (could not negotiate a common security protocol (tls1.2+) with localhost; the likely cause is Mercurial is configured to be more secure than the server can support)
   (consider contacting the operator of this server and ask them to support modern TLS protocol versions; or, set hostsecurity.localhost:minimumprotocol=tls1.0 to allow use of legacy, less secure protocols when communicating with this server)
   (see https://mercurial-scm.org/wiki/SecureConnections for more info)
   abort: error: .*(unsupported protocol|wrong ssl version).* (re)
   [100]
 
   $ killdaemons.py hg0.pid
   $ killdaemons.py hg1.pid
   $ killdaemons.py hg2.pid
 #endif
 
 Prepare for connecting through proxy
 
   $ hg serve -R test -p $HGPORT -d --pid-file=hg0.pid --certificate=$PRIV
   $ cat hg0.pid >> $DAEMON_PIDS
   $ hg serve -R test -p $HGPORT2 -d --pid-file=hg2.pid --certificate=server-expired.pem
   $ cat hg2.pid >> $DAEMON_PIDS
 tinyproxy.py doesn't fully detach, so killing it may result in extra output
 from the shell. So don't kill it.
   $ tinyproxy.py $HGPORT1 localhost >proxy.log </dev/null 2>&1 &
   $ while [ ! -f proxy.pid ]; do sleep 0; done
   $ cat proxy.pid >> $DAEMON_PIDS
 
   $ echo "[http_proxy]" >> copy-pull/.hg/hgrc
   $ echo "always=True" >> copy-pull/.hg/hgrc
   $ echo "[hostfingerprints]" >> copy-pull/.hg/hgrc
   $ echo "localhost =" >> copy-pull/.hg/hgrc
 
 Test unvalidated https through proxy
 
   $ http_proxy=http://localhost:$HGPORT1/ hg -R copy-pull pull --insecure
   pulling from https://localhost:$HGPORT/
   warning: connection security to localhost is disabled per current settings; communication is susceptible to eavesdropping and tampering
   searching for changes
   no changes found
 
 Test https with cacert and fingerprint through proxy
 
   $ http_proxy=http://localhost:$HGPORT1/ hg -R copy-pull pull \
   > --config web.cacerts="$CERTSDIR/pub.pem"
   pulling from https://localhost:$HGPORT/
   searching for changes
   no changes found
   $ http_proxy=http://localhost:$HGPORT1/ hg -R copy-pull pull https://localhost:$HGPORT/ --config hostfingerprints.localhost=ecd87cd6b386d04fc1b8b41c9d8f5e168eef1c03 --trace
   pulling from https://*:$HGPORT/ (glob)
   (SHA-1 fingerprint for localhost found in legacy [hostfingerprints] section; if you trust this fingerprint, remove the old SHA-1 fingerprint from [hostfingerprints] and add the following entry to the new [hostsecurity] section: localhost:fingerprints=sha256:20:de:b3:ad:b4:cd:a5:42:f0:74:41:1c:a2:70:1e:da:6e:c0:5c:16:9e:e7:22:0f:f1:b7:e5:6e:e4:92:af:7e)
   searching for changes
   no changes found
 
 Test https with cert problems through proxy
 
   $ http_proxy=http://localhost:$HGPORT1/ hg -R copy-pull pull \
   > --config web.cacerts="$CERTSDIR/pub-other.pem"
   pulling from https://localhost:$HGPORT/
   (the full certificate chain may not be available locally; see "hg help debugssl") (windows !)
   abort: error: *certificate verify failed* (glob)
   [100]
   $ http_proxy=http://localhost:$HGPORT1/ hg -R copy-pull pull \
   > --config web.cacerts="$CERTSDIR/pub-expired.pem" https://localhost:$HGPORT2/
   pulling from https://localhost:$HGPORT2/
   (the full certificate chain may not be available locally; see "hg help debugssl") (windows !)
   abort: error: *certificate verify failed* (glob)
   [100]
 
+Test when proxy can't connect to server
+
+  $ http_proxy=http://localhost:$HGPORT1/ hg -R copy-pull pull --insecure https://localhost:0/
+  pulling from https://localhost:0/
+  abort: error: Tunnel connection failed: 404 Connection refused
+  [100]
+
 
   $ killdaemons.py hg0.pid
 
   $ cd test
 
 Missing certificate file(s) are detected
 
   $ hg serve -p $HGPORT --certificate=/missing/certificate \
   > --config devel.servercafile=$PRIV --config devel.serverrequirecert=true
   abort: referenced certificate file (*/missing/certificate) does not exist (glob)
   [255]
 
   $ hg serve -p $HGPORT --certificate=$PRIV \
   > --config devel.servercafile=/missing/cafile --config devel.serverrequirecert=true
   abort: referenced certificate file (*/missing/cafile) does not exist (glob)
   [255]
 
 Start hgweb that requires client certificates:
 
   $ hg serve -p $HGPORT -d --pid-file=../hg0.pid --certificate=$PRIV \
   > --config devel.servercafile=$PRIV --config devel.serverrequirecert=true
   $ cat ../hg0.pid >> $DAEMON_PIDS
   $ cd ..
 
 without client certificate:
 
   $ P="$CERTSDIR" hg id https://localhost:$HGPORT/
   abort: error: .*(\$ECONNRESET\$|certificate required|handshake failure).* (re)
   [100]
 
 with client certificate:
 
   $ cat << EOT >> $HGRCPATH
   > [auth]
   > l.prefix = localhost
   > l.cert = $CERTSDIR/client-cert.pem
   > l.key = $CERTSDIR/client-key.pem
   > EOT
 
   $ P="$CERTSDIR" hg id https://localhost:$HGPORT/ \
   > --config auth.l.key="$CERTSDIR/client-key-decrypted.pem"
   5fed3813f7f5
 
   $ printf '1234\n' | env P="$CERTSDIR" hg id https://localhost:$HGPORT/ \
   > --config ui.interactive=True --config ui.nontty=True
   passphrase for */client-key.pem: 5fed3813f7f5 (glob)
 
   $ env P="$CERTSDIR" hg id https://localhost:$HGPORT/
   abort: error: * (glob)
   [100]
 
 Missing certficate and key files result in error
 
   $ hg id https://localhost:$HGPORT/ --config auth.l.cert=/missing/cert
   abort: certificate file (*/missing/cert) does not exist; cannot connect to localhost (glob)
   (restore missing file or fix references in Mercurial config)
   [255]
 
   $ hg id https://localhost:$HGPORT/ --config auth.l.key=/missing/key
   abort: certificate file (*/missing/key) does not exist; cannot connect to localhost (glob)
   (restore missing file or fix references in Mercurial config)
   [255]