Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/keepalive.py @ 4402:d1dd16256114
Update Windows build instructions.
author | Lee Cantey <lcantey@gmail.com> |
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date | Thu, 03 May 2007 14:09:09 -0700 |
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1 # This library is free software; you can redistribute it and/or |
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2 # modify it under the terms of the GNU Lesser General Public |
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3 # License as published by the Free Software Foundation; either |
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4 # version 2.1 of the License, or (at your option) any later version. |
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5 # |
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6 # This library is distributed in the hope that it will be useful, |
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7 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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8 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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9 # Lesser General Public License for more details. |
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10 # |
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11 # You should have received a copy of the GNU Lesser General Public |
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12 # License along with this library; if not, write to the |
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13 # Free Software Foundation, Inc., |
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14 # 59 Temple Place, Suite 330, |
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15 # Boston, MA 02111-1307 USA |
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16 |
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17 # This file is part of urlgrabber, a high-level cross-protocol url-grabber |
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18 # Copyright 2002-2004 Michael D. Stenner, Ryan Tomayko |
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19 |
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20 # Modified by Benoit Boissinot: |
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21 # - fix for digest auth (inspired from urllib2.py @ Python v2.4) |
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22 |
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23 """An HTTP handler for urllib2 that supports HTTP 1.1 and keepalive. |
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24 |
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25 >>> import urllib2 |
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26 >>> from keepalive import HTTPHandler |
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27 >>> keepalive_handler = HTTPHandler() |
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28 >>> opener = urllib2.build_opener(keepalive_handler) |
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29 >>> urllib2.install_opener(opener) |
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30 >>> |
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31 >>> fo = urllib2.urlopen('http://www.python.org') |
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32 |
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33 If a connection to a given host is requested, and all of the existing |
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34 connections are still in use, another connection will be opened. If |
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35 the handler tries to use an existing connection but it fails in some |
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36 way, it will be closed and removed from the pool. |
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37 |
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38 To remove the handler, simply re-run build_opener with no arguments, and |
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39 install that opener. |
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40 |
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41 You can explicitly close connections by using the close_connection() |
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42 method of the returned file-like object (described below) or you can |
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43 use the handler methods: |
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44 |
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45 close_connection(host) |
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46 close_all() |
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47 open_connections() |
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48 |
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49 NOTE: using the close_connection and close_all methods of the handler |
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50 should be done with care when using multiple threads. |
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51 * there is nothing that prevents another thread from creating new |
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52 connections immediately after connections are closed |
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53 * no checks are done to prevent in-use connections from being closed |
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54 |
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55 >>> keepalive_handler.close_all() |
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56 |
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57 EXTRA ATTRIBUTES AND METHODS |
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58 |
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59 Upon a status of 200, the object returned has a few additional |
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60 attributes and methods, which should not be used if you want to |
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61 remain consistent with the normal urllib2-returned objects: |
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62 |
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63 close_connection() - close the connection to the host |
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64 readlines() - you know, readlines() |
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65 status - the return status (ie 404) |
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66 reason - english translation of status (ie 'File not found') |
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67 |
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68 If you want the best of both worlds, use this inside an |
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69 AttributeError-catching try: |
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70 |
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71 >>> try: status = fo.status |
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72 >>> except AttributeError: status = None |
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73 |
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74 Unfortunately, these are ONLY there if status == 200, so it's not |
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75 easy to distinguish between non-200 responses. The reason is that |
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76 urllib2 tries to do clever things with error codes 301, 302, 401, |
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77 and 407, and it wraps the object upon return. |
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78 |
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79 For python versions earlier than 2.4, you can avoid this fancy error |
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80 handling by setting the module-level global HANDLE_ERRORS to zero. |
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81 You see, prior to 2.4, it's the HTTP Handler's job to determine what |
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82 to handle specially, and what to just pass up. HANDLE_ERRORS == 0 |
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83 means "pass everything up". In python 2.4, however, this job no |
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84 longer belongs to the HTTP Handler and is now done by a NEW handler, |
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85 HTTPErrorProcessor. Here's the bottom line: |
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86 |
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87 python version < 2.4 |
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88 HANDLE_ERRORS == 1 (default) pass up 200, treat the rest as |
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89 errors |
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90 HANDLE_ERRORS == 0 pass everything up, error processing is |
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91 left to the calling code |
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92 python version >= 2.4 |
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93 HANDLE_ERRORS == 1 pass up 200, treat the rest as errors |
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94 HANDLE_ERRORS == 0 (default) pass everything up, let the |
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95 other handlers (specifically, |
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96 HTTPErrorProcessor) decide what to do |
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97 |
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98 In practice, setting the variable either way makes little difference |
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99 in python 2.4, so for the most consistent behavior across versions, |
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100 you probably just want to use the defaults, which will give you |
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101 exceptions on errors. |
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102 |
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103 """ |
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104 |
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105 # $Id: keepalive.py,v 1.14 2006/04/04 21:00:32 mstenner Exp $ |
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106 |
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107 import urllib2 |
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108 import httplib |
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109 import socket |
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110 import thread |
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111 |
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112 DEBUG = None |
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113 |
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114 import sys |
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115 if sys.version_info < (2, 4): HANDLE_ERRORS = 1 |
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116 else: HANDLE_ERRORS = 0 |
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117 |
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118 class ConnectionManager: |
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119 """ |
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120 The connection manager must be able to: |
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121 * keep track of all existing |
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122 """ |
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123 def __init__(self): |
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124 self._lock = thread.allocate_lock() |
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125 self._hostmap = {} # map hosts to a list of connections |
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126 self._connmap = {} # map connections to host |
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127 self._readymap = {} # map connection to ready state |
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128 |
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129 def add(self, host, connection, ready): |
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130 self._lock.acquire() |
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131 try: |
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132 if not self._hostmap.has_key(host): self._hostmap[host] = [] |
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133 self._hostmap[host].append(connection) |
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134 self._connmap[connection] = host |
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135 self._readymap[connection] = ready |
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136 finally: |
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137 self._lock.release() |
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138 |
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139 def remove(self, connection): |
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140 self._lock.acquire() |
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141 try: |
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142 try: |
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143 host = self._connmap[connection] |
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144 except KeyError: |
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145 pass |
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146 else: |
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147 del self._connmap[connection] |
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148 del self._readymap[connection] |
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149 self._hostmap[host].remove(connection) |
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150 if not self._hostmap[host]: del self._hostmap[host] |
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151 finally: |
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152 self._lock.release() |
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153 |
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154 def set_ready(self, connection, ready): |
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155 try: self._readymap[connection] = ready |
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156 except KeyError: pass |
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157 |
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158 def get_ready_conn(self, host): |
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159 conn = None |
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160 self._lock.acquire() |
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161 try: |
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162 if self._hostmap.has_key(host): |
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163 for c in self._hostmap[host]: |
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164 if self._readymap[c]: |
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165 self._readymap[c] = 0 |
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166 conn = c |
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167 break |
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168 finally: |
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169 self._lock.release() |
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170 return conn |
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171 |
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172 def get_all(self, host=None): |
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173 if host: |
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174 return list(self._hostmap.get(host, [])) |
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175 else: |
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176 return dict(self._hostmap) |
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177 |
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178 class HTTPHandler(urllib2.HTTPHandler): |
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179 def __init__(self): |
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180 self._cm = ConnectionManager() |
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181 |
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182 #### Connection Management |
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183 def open_connections(self): |
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184 """return a list of connected hosts and the number of connections |
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185 to each. [('foo.com:80', 2), ('bar.org', 1)]""" |
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186 return [(host, len(li)) for (host, li) in self._cm.get_all().items()] |
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187 |
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188 def close_connection(self, host): |
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189 """close connection(s) to <host> |
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190 host is the host:port spec, as in 'www.cnn.com:8080' as passed in. |
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191 no error occurs if there is no connection to that host.""" |
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192 for h in self._cm.get_all(host): |
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193 self._cm.remove(h) |
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194 h.close() |
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195 |
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196 def close_all(self): |
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197 """close all open connections""" |
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198 for host, conns in self._cm.get_all().items(): |
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199 for h in conns: |
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200 self._cm.remove(h) |
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201 h.close() |
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202 |
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203 def _request_closed(self, request, host, connection): |
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204 """tells us that this request is now closed and the the |
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205 connection is ready for another request""" |
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206 self._cm.set_ready(connection, 1) |
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207 |
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208 def _remove_connection(self, host, connection, close=0): |
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209 if close: connection.close() |
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210 self._cm.remove(connection) |
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211 |
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212 #### Transaction Execution |
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213 def http_open(self, req): |
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214 return self.do_open(HTTPConnection, req) |
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215 |
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216 def do_open(self, http_class, req): |
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217 host = req.get_host() |
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218 if not host: |
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219 raise urllib2.URLError('no host given') |
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220 |
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221 try: |
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222 h = self._cm.get_ready_conn(host) |
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223 while h: |
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224 r = self._reuse_connection(h, req, host) |
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225 |
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226 # if this response is non-None, then it worked and we're |
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227 # done. Break out, skipping the else block. |
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228 if r: break |
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229 |
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230 # connection is bad - possibly closed by server |
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231 # discard it and ask for the next free connection |
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232 h.close() |
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233 self._cm.remove(h) |
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234 h = self._cm.get_ready_conn(host) |
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235 else: |
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236 # no (working) free connections were found. Create a new one. |
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237 h = http_class(host) |
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238 if DEBUG: DEBUG.info("creating new connection to %s (%d)", |
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239 host, id(h)) |
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240 self._cm.add(host, h, 0) |
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241 self._start_transaction(h, req) |
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242 r = h.getresponse() |
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243 except (socket.error, httplib.HTTPException), err: |
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244 raise urllib2.URLError(err) |
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245 |
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246 # if not a persistent connection, don't try to reuse it |
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247 if r.will_close: self._cm.remove(h) |
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248 |
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249 if DEBUG: DEBUG.info("STATUS: %s, %s", r.status, r.reason) |
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250 r._handler = self |
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251 r._host = host |
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252 r._url = req.get_full_url() |
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253 r._connection = h |
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254 r.code = r.status |
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255 r.headers = r.msg |
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256 r.msg = r.reason |
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257 |
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258 if r.status == 200 or not HANDLE_ERRORS: |
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259 return r |
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260 else: |
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261 return self.parent.error('http', req, r, |
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262 r.status, r.msg, r.headers) |
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263 |
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264 def _reuse_connection(self, h, req, host): |
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265 """start the transaction with a re-used connection |
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266 return a response object (r) upon success or None on failure. |
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267 This DOES not close or remove bad connections in cases where |
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268 it returns. However, if an unexpected exception occurs, it |
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269 will close and remove the connection before re-raising. |
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270 """ |
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271 try: |
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272 self._start_transaction(h, req) |
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273 r = h.getresponse() |
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274 # note: just because we got something back doesn't mean it |
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275 # worked. We'll check the version below, too. |
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276 except (socket.error, httplib.HTTPException): |
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277 r = None |
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278 except: |
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279 # adding this block just in case we've missed |
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280 # something we will still raise the exception, but |
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281 # lets try and close the connection and remove it |
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282 # first. We previously got into a nasty loop |
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283 # where an exception was uncaught, and so the |
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284 # connection stayed open. On the next try, the |
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285 # same exception was raised, etc. The tradeoff is |
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286 # that it's now possible this call will raise |
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287 # a DIFFERENT exception |
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288 if DEBUG: DEBUG.error("unexpected exception - closing " + \ |
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289 "connection to %s (%d)", host, id(h)) |
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290 self._cm.remove(h) |
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291 h.close() |
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292 raise |
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293 |
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294 if r is None or r.version == 9: |
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295 # httplib falls back to assuming HTTP 0.9 if it gets a |
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296 # bad header back. This is most likely to happen if |
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297 # the socket has been closed by the server since we |
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298 # last used the connection. |
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299 if DEBUG: DEBUG.info("failed to re-use connection to %s (%d)", |
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300 host, id(h)) |
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301 r = None |
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302 else: |
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303 if DEBUG: DEBUG.info("re-using connection to %s (%d)", host, id(h)) |
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304 |
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305 return r |
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306 |
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307 def _start_transaction(self, h, req): |
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308 headers = req.headers.copy() |
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309 body = req.data |
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310 if sys.version_info >= (2, 4): |
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311 headers.update(req.unredirected_hdrs) |
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312 try: |
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313 h.request(req.get_method(), req.get_selector(), body, headers) |
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314 except socket.error, err: # XXX what error? |
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315 raise urllib2.URLError(err) |
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316 |
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317 class HTTPResponse(httplib.HTTPResponse): |
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318 # we need to subclass HTTPResponse in order to |
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319 # 1) add readline() and readlines() methods |
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320 # 2) add close_connection() methods |
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321 # 3) add info() and geturl() methods |
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322 |
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323 # in order to add readline(), read must be modified to deal with a |
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324 # buffer. example: readline must read a buffer and then spit back |
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325 # one line at a time. The only real alternative is to read one |
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326 # BYTE at a time (ick). Once something has been read, it can't be |
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327 # put back (ok, maybe it can, but that's even uglier than this), |
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328 # so if you THEN do a normal read, you must first take stuff from |
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329 # the buffer. |
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330 |
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331 # the read method wraps the original to accomodate buffering, |
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332 # although read() never adds to the buffer. |
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333 # Both readline and readlines have been stolen with almost no |
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334 # modification from socket.py |
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335 |
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336 |
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337 def __init__(self, sock, debuglevel=0, strict=0, method=None): |
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338 if method: # the httplib in python 2.3 uses the method arg |
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339 httplib.HTTPResponse.__init__(self, sock, debuglevel, method) |
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340 else: # 2.2 doesn't |
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341 httplib.HTTPResponse.__init__(self, sock, debuglevel) |
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342 self.fileno = sock.fileno |
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343 self.code = None |
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344 self._rbuf = '' |
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345 self._rbufsize = 8096 |
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346 self._handler = None # inserted by the handler later |
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347 self._host = None # (same) |
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348 self._url = None # (same) |
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349 self._connection = None # (same) |
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350 |
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351 _raw_read = httplib.HTTPResponse.read |
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352 |
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353 def close(self): |
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354 if self.fp: |
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355 self.fp.close() |
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356 self.fp = None |
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357 if self._handler: |
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358 self._handler._request_closed(self, self._host, |
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359 self._connection) |
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360 |
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361 def close_connection(self): |
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362 self._handler._remove_connection(self._host, self._connection, close=1) |
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363 self.close() |
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364 |
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365 def info(self): |
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366 return self.headers |
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367 |
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|
368 def geturl(self): |
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|
369 return self._url |
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parents:
diff
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|
370 |
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parents:
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|
371 def read(self, amt=None): |
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372 # the _rbuf test is only in this first if for speed. It's not |
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|
373 # logically necessary |
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374 if self._rbuf and not amt is None: |
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375 L = len(self._rbuf) |
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|
376 if amt > L: |
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parents:
diff
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|
377 amt -= L |
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parents:
diff
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|
378 else: |
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parents:
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|
379 s = self._rbuf[:amt] |
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|
380 self._rbuf = self._rbuf[amt:] |
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parents:
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|
381 return s |
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http client: support persistent connections.
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parents:
diff
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|
382 |
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parents:
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383 s = self._rbuf + self._raw_read(amt) |
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parents:
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|
384 self._rbuf = '' |
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parents:
diff
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|
385 return s |
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parents:
diff
changeset
|
386 |
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parents:
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|
387 def readline(self, limit=-1): |
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parents:
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388 data = "" |
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parents:
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|
389 i = self._rbuf.find('\n') |
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parents:
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390 while i < 0 and not (0 < limit <= len(self._rbuf)): |
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parents:
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391 new = self._raw_read(self._rbufsize) |
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parents:
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|
392 if not new: break |
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parents:
diff
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|
393 i = new.find('\n') |
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parents:
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|
394 if i >= 0: i = i + len(self._rbuf) |
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parents:
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|
395 self._rbuf = self._rbuf + new |
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parents:
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|
396 if i < 0: i = len(self._rbuf) |
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http client: support persistent connections.
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parents:
diff
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|
397 else: i = i+1 |
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parents:
diff
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|
398 if 0 <= limit < len(self._rbuf): i = limit |
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http client: support persistent connections.
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parents:
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|
399 data, self._rbuf = self._rbuf[:i], self._rbuf[i:] |
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http client: support persistent connections.
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parents:
diff
changeset
|
400 return data |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
401 |
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http client: support persistent connections.
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parents:
diff
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|
402 def readlines(self, sizehint = 0): |
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http client: support persistent connections.
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parents:
diff
changeset
|
403 total = 0 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
404 list = [] |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
405 while 1: |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
406 line = self.readline() |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
407 if not line: break |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
408 list.append(line) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
409 total += len(line) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
410 if sizehint and total >= sizehint: |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
411 break |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
412 return list |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
413 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
414 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
415 class HTTPConnection(httplib.HTTPConnection): |
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http client: support persistent connections.
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parents:
diff
changeset
|
416 # use the modified response class |
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http client: support persistent connections.
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parents:
diff
changeset
|
417 response_class = HTTPResponse |
2600
c4325f0a9b91
clean up trailing white space.
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parents:
2444
diff
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|
418 |
2435
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parents:
diff
changeset
|
419 ######################################################################### |
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parents:
diff
changeset
|
420 ##### TEST FUNCTIONS |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
421 ######################################################################### |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
422 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
423 def error_handler(url): |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
424 global HANDLE_ERRORS |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
425 orig = HANDLE_ERRORS |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
426 keepalive_handler = HTTPHandler() |
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parents:
diff
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|
427 opener = urllib2.build_opener(keepalive_handler) |
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parents:
diff
changeset
|
428 urllib2.install_opener(opener) |
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parents:
diff
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|
429 pos = {0: 'off', 1: 'on'} |
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parents:
diff
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|
430 for i in (0, 1): |
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parents:
diff
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|
431 print " fancy error handling %s (HANDLE_ERRORS = %i)" % (pos[i], i) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
432 HANDLE_ERRORS = i |
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
433 try: |
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
434 fo = urllib2.urlopen(url) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
435 foo = fo.read() |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
436 fo.close() |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
437 try: status, reason = fo.status, fo.reason |
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parents:
diff
changeset
|
438 except AttributeError: status, reason = None, None |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
439 except IOError, e: |
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
440 print " EXCEPTION: %s" % e |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
441 raise |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
442 else: |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
443 print " status = %s, reason = %s" % (status, reason) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
444 HANDLE_ERRORS = orig |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
445 hosts = keepalive_handler.open_connections() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
446 print "open connections:", hosts |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
447 keepalive_handler.close_all() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
448 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
449 def continuity(url): |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
450 import md5 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
451 format = '%25s: %s' |
2600
c4325f0a9b91
clean up trailing white space.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2444
diff
changeset
|
452 |
2435
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
453 # first fetch the file with the normal http handler |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
454 opener = urllib2.build_opener() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
455 urllib2.install_opener(opener) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
456 fo = urllib2.urlopen(url) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
457 foo = fo.read() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
458 fo.close() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
459 m = md5.new(foo) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
460 print format % ('normal urllib', m.hexdigest()) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
461 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
462 # now install the keepalive handler and try again |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
463 opener = urllib2.build_opener(HTTPHandler()) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
464 urllib2.install_opener(opener) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
465 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
466 fo = urllib2.urlopen(url) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
467 foo = fo.read() |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
468 fo.close() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
469 m = md5.new(foo) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
470 print format % ('keepalive read', m.hexdigest()) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
471 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
472 fo = urllib2.urlopen(url) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
473 foo = '' |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
474 while 1: |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
475 f = fo.readline() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
476 if f: foo = foo + f |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
477 else: break |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
478 fo.close() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
479 m = md5.new(foo) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
480 print format % ('keepalive readline', m.hexdigest()) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
481 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
482 def comp(N, url): |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
483 print ' making %i connections to:\n %s' % (N, url) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
484 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
485 sys.stdout.write(' first using the normal urllib handlers') |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
486 # first use normal opener |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
487 opener = urllib2.build_opener() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
488 urllib2.install_opener(opener) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
489 t1 = fetch(N, url) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
490 print ' TIME: %.3f s' % t1 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
491 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
492 sys.stdout.write(' now using the keepalive handler ') |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
493 # now install the keepalive handler and try again |
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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494 opener = urllib2.build_opener(HTTPHandler()) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
495 urllib2.install_opener(opener) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
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496 t2 = fetch(N, url) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
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|
497 print ' TIME: %.3f s' % t2 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
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498 print ' improvement factor: %.2f' % (t1/t2, ) |
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parents:
2444
diff
changeset
|
499 |
2435
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parents:
diff
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500 def fetch(N, url, delay=0): |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
501 import time |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
502 lens = [] |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
503 starttime = time.time() |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
504 for i in range(N): |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
505 if delay and i > 0: time.sleep(delay) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
506 fo = urllib2.urlopen(url) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
507 foo = fo.read() |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
508 fo.close() |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
509 lens.append(len(foo)) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
510 diff = time.time() - starttime |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
511 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
512 j = 0 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
513 for i in lens[1:]: |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
514 j = j + 1 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
515 if not i == lens[0]: |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
516 print "WARNING: inconsistent length on read %i: %i" % (j, i) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
517 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
518 return diff |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
519 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
520 def test_timeout(url): |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
521 global DEBUG |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
522 dbbackup = DEBUG |
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
523 class FakeLogger: |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
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|
524 def debug(self, msg, *args): print msg % args |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
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|
525 info = warning = error = debug |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
526 DEBUG = FakeLogger() |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
527 print " fetching the file to establish a connection" |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
528 fo = urllib2.urlopen(url) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
529 data1 = fo.read() |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
530 fo.close() |
2600
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clean up trailing white space.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2444
diff
changeset
|
531 |
2435
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
532 i = 20 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
533 print " waiting %i seconds for the server to close the connection" % i |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
534 while i > 0: |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
535 sys.stdout.write('\r %2i' % i) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
536 sys.stdout.flush() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
537 time.sleep(1) |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
538 i -= 1 |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
539 sys.stderr.write('\r') |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
540 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
541 print " fetching the file a second time" |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
542 fo = urllib2.urlopen(url) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
543 data2 = fo.read() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
544 fo.close() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
545 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
546 if data1 == data2: |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
547 print ' data are identical' |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
548 else: |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
549 print ' ERROR: DATA DIFFER' |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
550 |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
551 DEBUG = dbbackup |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
552 |
2600
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clean up trailing white space.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2444
diff
changeset
|
553 |
2435
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
554 def test(url, N=10): |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
555 print "checking error hander (do this on a non-200)" |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
556 try: error_handler(url) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
557 except IOError, e: |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
558 print "exiting - exception will prevent further tests" |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
559 sys.exit() |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
560 print |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
561 print "performing continuity test (making sure stuff isn't corrupted)" |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
562 continuity(url) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
563 print |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
564 print "performing speed comparison" |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
565 comp(N, url) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
566 print |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
567 print "performing dropped-connection check" |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
568 test_timeout(url) |
2600
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clean up trailing white space.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2444
diff
changeset
|
569 |
2435
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
570 if __name__ == '__main__': |
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http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
571 import time |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
572 import sys |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
573 try: |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
574 N = int(sys.argv[1]) |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
575 url = sys.argv[2] |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
576 except: |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
577 print "%s <integer> <url>" % sys.argv[0] |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
578 else: |
ff2bac730b99
http client: support persistent connections.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
579 test(url, N) |