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__pycache__	[ DIR ]	drwxr-xr-x
cext	[ DIR ]	drwxr-xr-x
cffi	[ DIR ]	drwxr-xr-x
defaultrc	[ DIR ]	drwxr-xr-x
dirstateutils	[ DIR ]	drwxr-xr-x
helptext	[ DIR ]	drwxr-xr-x
hgweb	[ DIR ]	drwxr-xr-x
interfaces	[ DIR ]	drwxr-xr-x
locale	[ DIR ]	drwxr-xr-x
pure	[ DIR ]	drwxr-xr-x
revlogutils	[ DIR ]	drwxr-xr-x
templates	[ DIR ]	drwxr-xr-x
testing	[ DIR ]	drwxr-xr-x
thirdparty	[ DIR ]	drwxr-xr-x
upgrade_utils	[ DIR ]	drwxr-xr-x
utils	[ DIR ]	drwxr-xr-x
__init__.py	416 B	-rw-r--r--
__modulepolicy__.py	61 B	-rw-r--r--
__version__.py	60 B	-rw-r--r--
ancestor.py	12.51 KB	-rw-r--r--
archival.py	11.59 KB	-rw-r--r--
bookmarks.py	34.74 KB	-rw-r--r--
branchmap.py	31.58 KB	-rw-r--r--
bundle2.py	86.74 KB	-rw-r--r--
bundlecaches.py	13.6 KB	-rw-r--r--
bundlerepo.py	23.29 KB	-rw-r--r--
cacheutil.py	827 B	-rw-r--r--
changegroup.py	65.72 KB	-rw-r--r--
changelog.py	19.72 KB	-rw-r--r--
chgserver.py	26.25 KB	-rw-r--r--
cmdutil.py	131.98 KB	-rw-r--r--
color.py	17.93 KB	-rw-r--r--
commands.py	257.93 KB	-rw-r--r--
commandserver.py	24.59 KB	-rw-r--r--
commit.py	18.52 KB	-rw-r--r--
config.py	8.59 KB	-rw-r--r--
configitems.py	46.49 KB	-rw-r--r--
context.py	100.53 KB	-rw-r--r--
copies.py	46.01 KB	-rw-r--r--
crecord.py	70.99 KB	-rw-r--r--
dagop.py	39.57 KB	-rw-r--r--
dagparser.py	15.13 KB	-rw-r--r--
debugcommands.py	154.84 KB	-rw-r--r--
destutil.py	17.07 KB	-rw-r--r--
diffhelper.py	2.32 KB	-rw-r--r--
diffutil.py	4.52 KB	-rw-r--r--
dirstate.py	51.01 KB	-rw-r--r--
dirstateguard.py	3.09 KB	-rw-r--r--
dirstatemap.py	23.77 KB	-rw-r--r--
discovery.py	22 KB	-rw-r--r--
dispatch.py	46.19 KB	-rw-r--r--
dummycert.pem	2.19 KB	-rw-r--r--
encoding.py	22.89 KB	-rw-r--r--
error.py	17.88 KB	-rw-r--r--
exchange.py	94.65 KB	-rw-r--r--
extensions.py	30.6 KB	-rw-r--r--
exthelper.py	11.83 KB	-rw-r--r--
fancyopts.py	11.3 KB	-rw-r--r--
filelog.py	8.58 KB	-rw-r--r--
filemerge.py	39.67 KB	-rw-r--r--
fileset.py	18.66 KB	-rw-r--r--
filesetlang.py	10.34 KB	-rw-r--r--
formatter.py	26.34 KB	-rw-r--r--
graphmod.py	16.76 KB	-rw-r--r--
grep.py	7.26 KB	-rw-r--r--
hbisect.py	10.89 KB	-rw-r--r--
help.py	36.74 KB	-rw-r--r--
hg.py	51.95 KB	-rw-r--r--
hook.py	11.53 KB	-rw-r--r--
httpconnection.py	4.27 KB	-rw-r--r--
httppeer.py	20.71 KB	-rw-r--r--
i18n.py	4.05 KB	-rw-r--r--
keepalive.py	27.1 KB	-rw-r--r--
linelog.py	14.94 KB	-rw-r--r--
localrepo.py	140.97 KB	-rw-r--r--
lock.py	11.89 KB	-rw-r--r--
logcmdutil.py	42.53 KB	-rw-r--r--
logexchange.py	4.98 KB	-rw-r--r--
loggingutil.py	3.93 KB	-rw-r--r--
lsprof.py	4.25 KB	-rw-r--r--
lsprofcalltree.py	2.74 KB	-rw-r--r--
mail.py	17.09 KB	-rw-r--r--
manifest.py	75.45 KB	-rw-r--r--
match.py	52.06 KB	-rw-r--r--
mdiff.py	17.37 KB	-rw-r--r--
merge.py	90.09 KB	-rw-r--r--
mergestate.py	31.37 KB	-rw-r--r--
mergeutil.py	502 B	-rw-r--r--
metadata.py	32.33 KB	-rw-r--r--
minifileset.py	3.54 KB	-rw-r--r--
minirst.py	29.13 KB	-rw-r--r--
namespaces.py	8.19 KB	-rw-r--r--
narrowspec.py	11.57 KB	-rw-r--r--
node.py	2.07 KB	-rw-r--r--
obsolete.py	36.76 KB	-rw-r--r--
obsutil.py	35.84 KB	-rw-r--r--
parser.py	25.68 KB	-rw-r--r--
patch.py	102 KB	-rw-r--r--
pathutil.py	12.21 KB	-rw-r--r--
phases.py	32.54 KB	-rw-r--r--
policy.py	4.74 KB	-rw-r--r--
posix.py	23.05 KB	-rw-r--r--
profiling.py	8.64 KB	-rw-r--r--
progress.py	10.92 KB	-rw-r--r--
pushkey.py	1.67 KB	-rw-r--r--
pvec.py	6.01 KB	-rw-r--r--
pycompat.py	16.33 KB	-rw-r--r--
rcutil.py	3.57 KB	-rw-r--r--
registrar.py	17.78 KB	-rw-r--r--
repair.py	18.46 KB	-rw-r--r--
repocache.py	4.49 KB	-rw-r--r--
repoview.py	16.89 KB	-rw-r--r--
requirements.py	4.64 KB	-rw-r--r--
revlog.py	117.08 KB	-rw-r--r--
revset.py	87.27 KB	-rw-r--r--
revsetlang.py	28.47 KB	-rw-r--r--
rewriteutil.py	8.47 KB	-rw-r--r--
scmposix.py	2.57 KB	-rw-r--r--
scmutil.py	75.72 KB	-rw-r--r--
scmwindows.py	3.37 KB	-rw-r--r--
server.py	7.05 KB	-rw-r--r--
setdiscovery.py	18 KB	-rw-r--r--
shelve.py	38.04 KB	-rw-r--r--
similar.py	3.97 KB	-rw-r--r--
simplemerge.py	16.86 KB	-rw-r--r--
smartset.py	33.65 KB	-rw-r--r--
sparse.py	26.37 KB	-rw-r--r--
sshpeer.py	22.56 KB	-rw-r--r--
sslutil.py	35.54 KB	-rw-r--r--
stack.py	762 B	-rw-r--r--
state.py	11.99 KB	-rw-r--r--
statichttprepo.py	7.92 KB	-rw-r--r--
statprof.py	32.16 KB	-rw-r--r--
store.py	25.27 KB	-rw-r--r--
streamclone.py	30.73 KB	-rw-r--r--
strip.py	8.72 KB	-rw-r--r--
subrepo.py	70.89 KB	-rw-r--r--
subrepoutil.py	17.42 KB	-rw-r--r--
tagmerge.py	11.29 KB	-rw-r--r--
tags.py	29.67 KB	-rw-r--r--
templatefilters.py	15.11 KB	-rw-r--r--
templatefuncs.py	30.14 KB	-rw-r--r--
templatekw.py	34.12 KB	-rw-r--r--
templater.py	37.7 KB	-rw-r--r--
templateutil.py	35.66 KB	-rw-r--r--
transaction.py	25.97 KB	-rw-r--r--
treediscovery.py	5.92 KB	-rw-r--r--
txnutil.py	1.02 KB	-rw-r--r--
ui.py	80.23 KB	-rw-r--r--
unionrepo.py	9.72 KB	-rw-r--r--
upgrade.py	14.59 KB	-rw-r--r--
url.py	24.56 KB	-rw-r--r--
urllibcompat.py	5.94 KB	-rw-r--r--
util.py	95.18 KB	-rw-r--r--
verify.py	21.8 KB	-rw-r--r--
vfs.py	24.93 KB	-rw-r--r--
win32.py	22.04 KB	-rw-r--r--
windows.py	21.77 KB	-rw-r--r--
wireprotoframing.py	64.95 KB	-rw-r--r--
wireprotoserver.py	17.38 KB	-rw-r--r--
wireprototypes.py	13.07 KB	-rw-r--r--
wireprotov1peer.py	21.51 KB	-rw-r--r--
wireprotov1server.py	26.33 KB	-rw-r--r--
worker.py	15.47 KB	-rw-r--r--
zstd.cpython-310-x86_64-linux-...	570.78 KB	-rw-r--r--

Code Editor : httppeer.py

# httppeer.py - HTTP repository proxy classes for mercurial
#
# Copyright 2005, 2006 Olivia Mackall <olivia@selenic.com>
# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
#
# 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 errno
import io
import os
import socket
import struct

from .i18n import _
from .pycompat import getattr
from . import (
    bundle2,
    error,
    httpconnection,
    pycompat,
    statichttprepo,
    url as urlmod,
    util,
    wireprotov1peer,
)
from .utils import urlutil

httplib = util.httplib
urlerr = util.urlerr
urlreq = util.urlreq

def encodevalueinheaders(value, header, limit):
    """Encode a string value into multiple HTTP headers.

``value`` will be encoded into 1 or more HTTP headers with the names
    ``header-<N>`` where ``<N>`` is an integer starting at 1. Each header
    name + value will be at most ``limit`` bytes long.

Returns an iterable of 2-tuples consisting of header names and
    values as native strings.
    """
    # HTTP Headers are ASCII. Python 3 requires them to be unicodes,
    # not bytes. This function always takes bytes in as arguments.
    fmt = pycompat.strurl(header) + r'-%s'
    # Note: it is *NOT* a bug that the last bit here is a bytestring
    # and not a unicode: we're just getting the encoded length anyway,
    # and using an r-string to make it portable between Python 2 and 3
    # doesn't work because then the \r is a literal backslash-r
    # instead of a carriage return.
    valuelen = limit - len(fmt % '000') - len(b': \r\n')
    result = []

n = 0
    for i in pycompat.xrange(0, len(value), valuelen):
        n += 1
        result.append((fmt % str(n), pycompat.strurl(value[i : i + valuelen])))

return result

class _multifile(object):
    def __init__(self, *fileobjs):
        for f in fileobjs:
            if not util.safehasattr(f, b'length'):
                raise ValueError(
                    b'_multifile only supports file objects that '
                    b'have a length but this one does not:',
                    type(f),
                    f,
                )
        self._fileobjs = fileobjs
        self._index = 0

@property
    def length(self):
        return sum(f.length for f in self._fileobjs)

def read(self, amt=None):
        if amt <= 0:
            return b''.join(f.read() for f in self._fileobjs)
        parts = []
        while amt and self._index < len(self._fileobjs):
            parts.append(self._fileobjs[self._index].read(amt))
            got = len(parts[-1])
            if got < amt:
                self._index += 1
            amt -= got
        return b''.join(parts)

def seek(self, offset, whence=os.SEEK_SET):
        if whence != os.SEEK_SET:
            raise NotImplementedError(
                b'_multifile does not support anything other'
                b' than os.SEEK_SET for whence on seek()'
            )
        if offset != 0:
            raise NotImplementedError(
                b'_multifile only supports seeking to start, but that '
                b'could be fixed if you need it'
            )
        for f in self._fileobjs:
            f.seek(0)
        self._index = 0

def makev1commandrequest(
    ui, requestbuilder, caps, capablefn, repobaseurl, cmd, args
):
    """Make an HTTP request to run a command for a version 1 client.

``caps`` is a set of known server capabilities. The value may be
    None if capabilities are not yet known.

``capablefn`` is a function to evaluate a capability.

``cmd``, ``args``, and ``data`` define the command, its arguments, and
    raw data to pass to it.
    """
    if cmd == b'pushkey':
        args[b'data'] = b''
    data = args.pop(b'data', None)
    headers = args.pop(b'headers', {})

ui.debug(b"sending %s command\n" % cmd)
    q = [(b'cmd', cmd)]
    headersize = 0
    # Important: don't use self.capable() here or else you end up
    # with infinite recursion when trying to look up capabilities
    # for the first time.
    postargsok = caps is not None and b'httppostargs' in caps

# Send arguments via POST.
    if postargsok and args:
        strargs = urlreq.urlencode(sorted(args.items()))
        if not data:
            data = strargs
        else:
            if isinstance(data, bytes):
                i = io.BytesIO(data)
                i.length = len(data)
                data = i
            argsio = io.BytesIO(strargs)
            argsio.length = len(strargs)
            data = _multifile(argsio, data)
        headers['X-HgArgs-Post'] = len(strargs)
    elif args:
        # Calling self.capable() can infinite loop if we are calling
        # "capabilities". But that command should never accept wire
        # protocol arguments. So this should never happen.
        assert cmd != b'capabilities'
        httpheader = capablefn(b'httpheader')
        if httpheader:
            headersize = int(httpheader.split(b',', 1)[0])

# Send arguments via HTTP headers.
        if headersize > 0:
            # The headers can typically carry more data than the URL.
            encoded_args = urlreq.urlencode(sorted(args.items()))
            for header, value in encodevalueinheaders(
                encoded_args, b'X-HgArg', headersize
            ):
                headers[header] = value
        # Send arguments via query string (Mercurial <1.9).
        else:
            q += sorted(args.items())

qs = b'?%s' % urlreq.urlencode(q)
    cu = b"%s%s" % (repobaseurl, qs)
    size = 0
    if util.safehasattr(data, b'length'):
        size = data.length
    elif data is not None:
        size = len(data)
    if data is not None and 'Content-Type' not in headers:
        headers['Content-Type'] = 'application/mercurial-0.1'

# Tell the server we accept application/mercurial-0.2 and multiple
    # compression formats if the server is capable of emitting those
    # payloads.
    # Note: Keep this set empty by default, as client advertisement of
    # protocol parameters should only occur after the handshake.
    protoparams = set()

mediatypes = set()
    if caps is not None:
        mt = capablefn(b'httpmediatype')
        if mt:
            protoparams.add(b'0.1')
            mediatypes = set(mt.split(b','))

protoparams.add(b'partial-pull')

if b'0.2tx' in mediatypes:
        protoparams.add(b'0.2')

if b'0.2tx' in mediatypes and capablefn(b'compression'):
        # We /could/ compare supported compression formats and prune
        # non-mutually supported or error if nothing is mutually supported.
        # For now, send the full list to the server and have it error.
        comps = [
            e.wireprotosupport().name
            for e in util.compengines.supportedwireengines(util.CLIENTROLE)
        ]
        protoparams.add(b'comp=%s' % b','.join(comps))

if protoparams:
        protoheaders = encodevalueinheaders(
            b' '.join(sorted(protoparams)), b'X-HgProto', headersize or 1024
        )
        for header, value in protoheaders:
            headers[header] = value

varyheaders = []
    for header in headers:
        if header.lower().startswith('x-hg'):
            varyheaders.append(header)

if varyheaders:
        headers['Vary'] = ','.join(sorted(varyheaders))

req = requestbuilder(pycompat.strurl(cu), data, headers)

if data is not None:
        ui.debug(b"sending %d bytes\n" % size)
        req.add_unredirected_header('Content-Length', '%d' % size)

return req, cu, qs

def _reqdata(req):
    """Get request data, if any. If no data, returns None."""
    if pycompat.ispy3:
        return req.data
    if not req.has_data():
        return None
    return req.get_data()

def sendrequest(ui, opener, req):
    """Send a prepared HTTP request.

Returns the response object.
    """
    dbg = ui.debug
    if ui.debugflag and ui.configbool(b'devel', b'debug.peer-request'):
        line = b'devel-peer-request: %s\n'
        dbg(
            line
            % b'%s %s'
            % (
                pycompat.bytesurl(req.get_method()),
                pycompat.bytesurl(req.get_full_url()),
            )
        )
        hgargssize = None

for header, value in sorted(req.header_items()):
            header = pycompat.bytesurl(header)
            value = pycompat.bytesurl(value)
            if header.startswith(b'X-hgarg-'):
                if hgargssize is None:
                    hgargssize = 0
                hgargssize += len(value)
            else:
                dbg(line % b'  %s %s' % (header, value))

if hgargssize is not None:
            dbg(
                line
                % b'  %d bytes of commands arguments in headers'
                % hgargssize
            )
        data = _reqdata(req)
        if data is not None:
            length = getattr(data, 'length', None)
            if length is None:
                length = len(data)
            dbg(line % b'  %d bytes of data' % length)

start = util.timer()

res = None
    try:
        res = opener.open(req)
    except urlerr.httperror as inst:
        if inst.code == 401:
            raise error.Abort(_(b'authorization failed'))
        raise
    except httplib.HTTPException as inst:
        ui.debug(
            b'http error requesting %s\n'
            % urlutil.hidepassword(req.get_full_url())
        )
        ui.traceback()
        raise IOError(None, inst)
    finally:
        if ui.debugflag and ui.configbool(b'devel', b'debug.peer-request'):
            code = res.code if res else -1
            dbg(
                line
                % b'  finished in %.4f seconds (%d)'
                % (util.timer() - start, code)
            )

# Insert error handlers for common I/O failures.
    urlmod.wrapresponse(res)

return res

class RedirectedRepoError(error.RepoError):
    def __init__(self, msg, respurl):
        super(RedirectedRepoError, self).__init__(msg)
        self.respurl = respurl

def parsev1commandresponse(ui, baseurl, requrl, qs, resp, compressible):
    # record the url we got redirected to
    redirected = False
    respurl = pycompat.bytesurl(resp.geturl())
    if respurl.endswith(qs):
        respurl = respurl[: -len(qs)]
        qsdropped = False
    else:
        qsdropped = True

if baseurl.rstrip(b'/') != respurl.rstrip(b'/'):
        redirected = True
        if not ui.quiet:
            ui.warn(_(b'real URL is %s\n') % respurl)

try:
        proto = pycompat.bytesurl(resp.getheader('content-type', ''))
    except AttributeError:
        proto = pycompat.bytesurl(resp.headers.get('content-type', ''))

safeurl = urlutil.hidepassword(baseurl)
    if proto.startswith(b'application/hg-error'):
        raise error.OutOfBandError(resp.read())

# Pre 1.0 versions of Mercurial used text/plain and
    # application/hg-changegroup. We don't support such old servers.
    if not proto.startswith(b'application/mercurial-'):
        ui.debug(b"requested URL: '%s'\n" % urlutil.hidepassword(requrl))
        msg = _(
            b"'%s' does not appear to be an hg repository:\n"
            b"---%%<--- (%s)\n%s\n---%%<---\n"
        ) % (safeurl, proto or b'no content-type', resp.read(1024))

# Some servers may strip the query string from the redirect. We
        # raise a special error type so callers can react to this specially.
        if redirected and qsdropped:
            raise RedirectedRepoError(msg, respurl)
        else:
            raise error.RepoError(msg)

try:
        subtype = proto.split(b'-', 1)[1]

version_info = tuple([int(n) for n in subtype.split(b'.')])
    except ValueError:
        raise error.RepoError(
            _(b"'%s' sent a broken Content-Type header (%s)") % (safeurl, proto)
        )

# TODO consider switching to a decompression reader that uses
    # generators.
    if version_info == (0, 1):
        if compressible:
            resp = util.compengines[b'zlib'].decompressorreader(resp)

elif version_info == (0, 2):
        # application/mercurial-0.2 always identifies the compression
        # engine in the payload header.
        elen = struct.unpack(b'B', util.readexactly(resp, 1))[0]
        ename = util.readexactly(resp, elen)
        engine = util.compengines.forwiretype(ename)

resp = engine.decompressorreader(resp)
    else:
        raise error.RepoError(
            _(b"'%s' uses newer protocol %s") % (safeurl, subtype)
        )

return respurl, proto, resp

class httppeer(wireprotov1peer.wirepeer):
    def __init__(self, ui, path, url, opener, requestbuilder, caps):
        self.ui = ui
        self._path = path
        self._url = url
        self._caps = caps
        self.limitedarguments = caps is not None and b'httppostargs' not in caps
        self._urlopener = opener
        self._requestbuilder = requestbuilder

def __del__(self):
        for h in self._urlopener.handlers:
            h.close()
            getattr(h, "close_all", lambda: None)()

# Begin of ipeerconnection interface.

def url(self):
        return self._path

def local(self):
        return None

def peer(self):
        return self

def canpush(self):
        return True

def close(self):
        try:
            reqs, sent, recv = (
                self._urlopener.requestscount,
                self._urlopener.sentbytescount,
                self._urlopener.receivedbytescount,
            )
        except AttributeError:
            return
        self.ui.note(
            _(
                b'(sent %d HTTP requests and %d bytes; '
                b'received %d bytes in responses)\n'
            )
            % (reqs, sent, recv)
        )

# End of ipeerconnection interface.

# Begin of ipeercommands interface.

def capabilities(self):
        return self._caps

# End of ipeercommands interface.

def _callstream(self, cmd, _compressible=False, **args):
        args = pycompat.byteskwargs(args)

req, cu, qs = makev1commandrequest(
            self.ui,
            self._requestbuilder,
            self._caps,
            self.capable,
            self._url,
            cmd,
            args,
        )

resp = sendrequest(self.ui, self._urlopener, req)

self._url, ct, resp = parsev1commandresponse(
            self.ui, self._url, cu, qs, resp, _compressible
        )

return resp

def _call(self, cmd, **args):
        fp = self._callstream(cmd, **args)
        try:
            return fp.read()
        finally:
            # if using keepalive, allow connection to be reused
            fp.close()

def _callpush(self, cmd, cg, **args):
        # have to stream bundle to a temp file because we do not have
        # http 1.1 chunked transfer.

types = self.capable(b'unbundle')
        try:
            types = types.split(b',')
        except AttributeError:
            # servers older than d1b16a746db6 will send 'unbundle' as a
            # boolean capability. They only support headerless/uncompressed
            # bundles.
            types = [b""]
        for x in types:
            if x in bundle2.bundletypes:
                type = x
                break

tempname = bundle2.writebundle(self.ui, cg, None, type)
        fp = httpconnection.httpsendfile(self.ui, tempname, b"rb")
        headers = {'Content-Type': 'application/mercurial-0.1'}

try:
            r = self._call(cmd, data=fp, headers=headers, **args)
            vals = r.split(b'\n', 1)
            if len(vals) < 2:
                raise error.ResponseError(_(b"unexpected response:"), r)
            return vals
        except urlerr.httperror:
            # Catch and re-raise these so we don't try and treat them
            # like generic socket errors. They lack any values in
            # .args on Python 3 which breaks our socket.error block.
            raise
        except socket.error as err:
            if err.args[0] in (errno.ECONNRESET, errno.EPIPE):
                raise error.Abort(_(b'push failed: %s') % err.args[1])
            raise error.Abort(err.args[1])
        finally:
            fp.close()
            os.unlink(tempname)

def _calltwowaystream(self, cmd, fp, **args):
        filename = None
        try:
            # dump bundle to disk
            fd, filename = pycompat.mkstemp(prefix=b"hg-bundle-", suffix=b".hg")
            with os.fdopen(fd, "wb") as fh:
                d = fp.read(4096)
                while d:
                    fh.write(d)
                    d = fp.read(4096)
            # start http push
            with httpconnection.httpsendfile(self.ui, filename, b"rb") as fp_:
                headers = {'Content-Type': 'application/mercurial-0.1'}
                return self._callstream(cmd, data=fp_, headers=headers, **args)
        finally:
            if filename is not None:
                os.unlink(filename)

def _callcompressable(self, cmd, **args):
        return self._callstream(cmd, _compressible=True, **args)

def _abort(self, exception):
        raise exception

class queuedcommandfuture(pycompat.futures.Future):
    """Wraps result() on command futures to trigger submission on call."""

def result(self, timeout=None):
        if self.done():
            return pycompat.futures.Future.result(self, timeout)

self._peerexecutor.sendcommands()

# sendcommands() will restore the original __class__ and self.result
        # will resolve to Future.result.
        return self.result(timeout)

def performhandshake(ui, url, opener, requestbuilder):
    # The handshake is a request to the capabilities command.

caps = None

def capable(x):
        raise error.ProgrammingError(b'should not be called')

args = {}

req, requrl, qs = makev1commandrequest(
        ui, requestbuilder, caps, capable, url, b'capabilities', args
    )
    resp = sendrequest(ui, opener, req)

# The server may redirect us to the repo root, stripping the
    # ?cmd=capabilities query string from the URL. The server would likely
    # return HTML in this case and ``parsev1commandresponse()`` would raise.
    # We catch this special case and re-issue the capabilities request against
    # the new URL.
    #
    # We should ideally not do this, as a redirect that drops the query
    # string from the URL is arguably a server bug. (Garbage in, garbage out).
    # However,  Mercurial clients for several years appeared to handle this
    # issue without behavior degradation. And according to issue 5860, it may
    # be a longstanding bug in some server implementations. So we allow a
    # redirect that drops the query string to "just work."
    try:
        respurl, ct, resp = parsev1commandresponse(
            ui, url, requrl, qs, resp, compressible=False
        )
    except RedirectedRepoError as e:
        req, requrl, qs = makev1commandrequest(
            ui, requestbuilder, caps, capable, e.respurl, b'capabilities', args
        )
        resp = sendrequest(ui, opener, req)
        respurl, ct, resp = parsev1commandresponse(
            ui, url, requrl, qs, resp, compressible=False
        )

try:
        rawdata = resp.read()
    finally:
        resp.close()

if not ct.startswith(b'application/mercurial-'):
        raise error.ProgrammingError(b'unexpected content-type: %s' % ct)

info = {b'v1capabilities': set(rawdata.split())}

return respurl, info

def makepeer(ui, path, opener=None, requestbuilder=urlreq.request):
    """Construct an appropriate HTTP peer instance.

``opener`` is an ``url.opener`` that should be used to establish
    connections, perform HTTP requests.

``requestbuilder`` is the type used for constructing HTTP requests.
    It exists as an argument so extensions can override the default.
    """
    u = urlutil.url(path)
    if u.query or u.fragment:
        raise error.Abort(
            _(b'unsupported URL component: "%s"') % (u.query or u.fragment)
        )

# urllib cannot handle URLs with embedded user or passwd.
    url, authinfo = u.authinfo()
    ui.debug(b'using %s\n' % url)

opener = opener or urlmod.opener(ui, authinfo)

respurl, info = performhandshake(ui, url, opener, requestbuilder)

return httppeer(
        ui, path, respurl, opener, requestbuilder, info[b'v1capabilities']
    )

def instance(ui, path, create, intents=None, createopts=None):
    if create:
        raise error.Abort(_(b'cannot create new http repository'))
    try:
        if path.startswith(b'https:') and not urlmod.has_https:
            raise error.Abort(
                _(b'Python support for SSL and HTTPS is not installed')
            )

inst = makepeer(ui, path)

return inst
    except error.RepoError as httpexception:
        try:
            r = statichttprepo.instance(ui, b"static-" + path, create)
            ui.note(_(b'(falling back to static-http)\n'))
            return r
        except error.RepoError:
            raise httpexception  # use the original http RepoError instead

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Code Editor : httppeer.py