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annotate mercurial/hgweb/request.py @ 2434:a2df85adface

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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.
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Thu, 15 Jun 2006 12:55:58 -0700
parents a8f1049d1d2d
children 09b1c9ef317c
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1 # hgweb/request.py - An http request from either CGI or the standalone server.
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2 #
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3 # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
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4 # Copyright 2005 Matt Mackall <mpm@selenic.com>
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5 #
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6 # This software may be used and distributed according to the terms
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7 # of the GNU General Public License, incorporated herein by reference.
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8
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9 from mercurial.demandload import demandload
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10 demandload(globals(), "socket sys cgi os errno")
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11 from mercurial.i18n import gettext as _
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12
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13 class hgrequest(object):
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14 def __init__(self, inp=None, out=None, env=None):
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15 self.inp = inp or sys.stdin
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16 self.out = out or sys.stdout
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17 self.env = env or os.environ
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18 self.form = cgi.parse(self.inp, self.env, keep_blank_values=1)
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19 self.will_close = True
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21 def write(self, *things):
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22 for thing in things:
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23 if hasattr(thing, "__iter__"):
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24 for part in thing:
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25 self.write(part)
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26 else:
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27 try:
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28 self.out.write(str(thing))
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29 except socket.error, inst:
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30 if inst[0] != errno.ECONNRESET:
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31 raise
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32
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33 def done(self):
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34 if self.will_close:
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35 self.inp.close()
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36 self.out.close()
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37 else:
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38 self.out.flush()
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39
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40 def header(self, headers=[('Content-type','text/html')]):
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41 for header in headers:
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42 self.out.write("%s: %s\r\n" % header)
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43 self.out.write("\r\n")
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44
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45 def httphdr(self, type, filename=None, length=0):
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47 headers = [('Content-type', type)]
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48 if filename:
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49 headers.append(('Content-disposition', 'attachment; filename=%s' %
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50 filename))
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51 # we do not yet support http 1.1 chunked transfer, so we have
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52 # to force connection to close if content-length not known
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53 if length:
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54 headers.append(('Content-length', str(length)))
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55 self.will_close = False
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56 else:
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57 headers.append(('Connection', 'close'))
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58 self.will_close = True
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59 self.header(headers)