mercurial/hg.py

http server: support persistent connections.

only "hg serve" affected yet.  http server running cgi script will not
use persistent connections.  support for fastcgi will help that.

clients that support keepalive can use one tcp connection for all
commands during clone and pull.  this makes latency of binary search
during pull much lower over wan.

if server does not know content-length, it will force connection to
close at end.  right fix is to use chunked transfer-encoding but this is
easier and does not hurt performance. only command that is affected is
"changegroup" which is always last command during a pull.

# hg.py - repository classes for mercurial
#
# Copyright 2005 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.

from node import *
from repo import *
from demandload import *
from i18n import gettext as _
demandload(globals(), "localrepo bundlerepo httprepo sshrepo statichttprepo")

def repository(ui, path=None, create=0):
    if path:
        if path.startswith("http://"):
            return httprepo.httprepository(ui, path)
        if path.startswith("https://"):
            return httprepo.httpsrepository(ui, path)
        if path.startswith("hg://"):
            ui.warn(_("hg:// syntax is deprecated, "
                      "please use http:// instead\n"))
            return httprepo.httprepository(
                ui, path.replace("hg://", "http://"))
        if path.startswith("old-http://"):
            ui.warn(_("old-http:// syntax is deprecated, "
                      "please use static-http:// instead\n"))
            return statichttprepo.statichttprepository(
                ui, path.replace("old-http://", "http://"))
        if path.startswith("static-http://"):
            return statichttprepo.statichttprepository(
                ui, path.replace("static-http://", "http://"))
        if path.startswith("ssh://"):
            return sshrepo.sshrepository(ui, path)
        if path.startswith("bundle://"):
            path = path[9:]
            s = path.split("+", 1)
            if  len(s) == 1:
                repopath, bundlename = "", s[0]
            else:
                repopath, bundlename = s
            return bundlerepo.bundlerepository(ui, repopath, bundlename)

    return localrepo.localrepository(ui, path, create)