annotate plugins/cherrypy/_cphttpserver.py @ 215:50af54dbd6a6 alpha

Traipse Alpha 'OpenRPG' {100430-0} Traipse is a distribution of OpenRPG that is designed to be easy to setup and go. Traipse also makes it easy for developers to work on code without fear of sacrifice. 'Ornery-Orc' continues the trend of 'Grumpy' and adds fixes to the code. 'Ornery-Orc's main goal is to offer more advanced features and enhance the productivity of the user. Update Summary (Patch-2) Moved to Beta!! New Features: New Namespace method with two new syntaxes New Namespace Internal is context sensitive, always! New Namespace External is 'as narrow as you make it' New Namespace FutureCheck helps ensure you don't receive an incorrect node New PluginDB access for URL2Link plugin New to Forms, they now show their content in Design Mode New to Update Manager, checks Repo for updates on software start New to Mini Lin node, change title in design mode Fixes: Fix to Server GUI startup errors Fix to Server GUI Rooms tab updating Fix to Chat and Settings if non existant die roller is picked Fix to Dieroller and .open() used with .vs(). Successes are correctly calculated Fix to Alias Lib's Export to Tree, Open, Save features Fix to alias node, now works properly Fix to Splitter node, minor GUI cleanup Fix to Backgrounds not loading through remote loader Fix to Node name errors Fix to rolling dice in chat Whispers Fix to Splitters Sizing issues Fix to URL2Link plugin, modified regex compilation should remove memory leak Fix to mapy.py, a roll back due to zoomed grid issues Fix to whiteboard_handler, Circles work by you clicking the center of the circle Fix to Servers parse_incoming_dom which was outdated and did not respect XML Fix to a broken link in the server welcome message Fix to InterParse and logger requiring traceback Fix to Update Manager Status Bar Fix to failed image and erroneous pop up Fix to Mini Lib node that was preventing use Fix to plugins that parce dice but did not call InterParse Fix to nodes for name changing by double click Fix to Game Tree, node ordering on drag and drop corrected
author sirebral
date Fri, 30 Apr 2010 05:36:11 -0500
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0
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1 """
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2 Copyright (c) 2004, CherryPy Team (team@cherrypy.org)
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3 All rights reserved.
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4
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5 Redistribution and use in source and binary forms, with or without modification,
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6 are permitted provided that the following conditions are met:
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7
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8 * Redistributions of source code must retain the above copyright notice,
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9 this list of conditions and the following disclaimer.
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10 * Redistributions in binary form must reproduce the above copyright notice,
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11 this list of conditions and the following disclaimer in the documentation
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12 and/or other materials provided with the distribution.
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13 * Neither the name of the CherryPy Team nor the names of its contributors
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14 may be used to endorse or promote products derived from this software
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15 without specific prior written permission.
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16
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17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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18 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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19 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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20 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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21 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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23 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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24 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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25 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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26 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 """
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28
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29 import cpg, sys, threading, SocketServer, _cphttptools
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30 import BaseHTTPServer, socket, Queue, _cputil
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31
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32 def stop():
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33 cpg._server.shutdown()
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34
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35 def start():
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36 """ Prepare the HTTP server and then run it """
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37
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38 # If sessions are stored in files and we
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39 # use threading, we need a lock on the file
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40 if (cpg.configOption.threadPool > 1) and \
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41 cpg.configOption.sessionStorageType == 'file':
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42 cpg._sessionFileLock = threading.RLock()
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43
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44
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45 if cpg.configOption.socketFile:
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46 # AF_UNIX socket
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47 # TODO: Handle threading here
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48 class MyCherryHTTPServer(CherryHTTPServer): address_family = socket.AF_UNIX
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49 else:
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50 # AF_INET socket
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51 if cpg.configOption.threadPool > 1:
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52 MyCherryHTTPServer = PooledThreadServer
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53 else:
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54 MyCherryHTTPServer = CherryHTTPServer
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55
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56 MyCherryHTTPServer.request_queue_size = cpg.configOption.socketQueueSize
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57
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58 # Set protocol_version
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59 CherryHTTPRequestHandler.protocol_version = cpg.configOption.protocolVersion
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60
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61 run_server(CherryHTTPRequestHandler, MyCherryHTTPServer, \
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62 (cpg.configOption.socketHost, cpg.configOption.socketPort), \
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63 cpg.configOption.socketFile)
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64
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65 def run_server(HandlerClass, ServerClass, server_address, socketFile):
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66 """Run the HTTP request handler class."""
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67
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68 if cpg.configOption.socketFile:
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69 try: os.unlink(cpg.configOption.socketFile) # So we can reuse the socket
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70 except: pass
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71 server_address = cpg.configOption.socketFile
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72 if cpg.configOption.threadPool > 1:
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73 myCherryHTTPServer = ServerClass(server_address, cpg.configOption.threadPool, HandlerClass)
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74 else:
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75 myCherryHTTPServer = ServerClass(server_address, HandlerClass)
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76 cpg._server = myCherryHTTPServer
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77 if cpg.configOption.socketFile:
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78 try: os.chmod(socketFile, 0777) # So everyone can access the socket
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79 except: pass
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80 global _cpLogMessage
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81 _cpLogMessage = _cputil.getSpecialFunction('_cpLogMessage')
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82
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83 servingWhat = "HTTP"
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84 if cpg.configOption.socketPort: onWhat = "socket: ('%s', %s)" % (cpg.configOption.socketHost, cpg.configOption.socketPort)
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85 else: onWhat = "socket file: %s" % cpg.configOption.socketFile
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86 _cpLogMessage("Serving %s on %s" % (servingWhat, onWhat), 'HTTP')
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87
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88 try:
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89 # Call the functions from cpg.server.onStartServerList
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90 for func in cpg.server.onStartServerList:
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91 func()
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92 myCherryHTTPServer.serve_forever()
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93 except KeyboardInterrupt:
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94 _cpLogMessage("<Ctrl-C> hit: shutting down", "HTTP")
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95 myCherryHTTPServer.server_close()
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96 # Call the functions from cpg.server.onStartServerList
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97 for func in cpg.server.onStopServerList:
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98 func()
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99
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100 class CherryHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
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101
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102 """CherryPy HTTP request handler with the following commands:
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103
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104 o GET
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105 o HEAD
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106 o POST
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107 o HOTRELOAD
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108
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109 """
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110
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111 def address_string(self):
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112 """ Try to do a reverse DNS based on [server]reverseDNS in the config file """
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113 if cpg.configOption.reverseDNS:
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114 return BaseHTTPServer.BaseHTTPRequestHandler.address_string(self)
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115 else:
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116 return self.client_address[0]
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117
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118 def do_GET(self):
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119 """Serve a GET request."""
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120 cpg.request.method = 'GET'
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121 _cphttptools.doRequest(
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122 self.client_address[0],
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123 self.address_string(),
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124 self.raw_requestline,
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125 self.headers,
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126 self.rfile,
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127 self.wfile
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128 )
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129
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130 def do_HEAD(self): # Head is not implemented
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131 """Serve a HEAD request."""
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132 cpg.request.method = 'HEAD'
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133 _cphttptools.doRequest(
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134 self.client_address[0],
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135 self.address_string(),
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136 self.raw_requestline,
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137 self.headers,
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138 self.rfile,
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139 self.wfile
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140 )
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141
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142 def do_POST(self):
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143 """Serve a POST request."""
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144 cpg.request.method = 'POST'
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145 _cphttptools.doRequest(
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146 self.client_address[0],
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147 self.address_string(),
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148 self.raw_requestline,
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149 self.headers,
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150 self.rfile,
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151 self.wfile
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152 )
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153
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154 self.connection = self.request
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155
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156 def log_message(self, format, *args):
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157 """ We have to override this to use our own logging mechanism """
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158 _cputil.getSpecialFunction('_cpLogMessage')(format % args, "HTTP")
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159
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160
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161 class CherryHTTPServer(BaseHTTPServer.HTTPServer):
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162 def server_activate(self):
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163 """Override server_activate to set timeout on our listener socket"""
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164 self.socket.settimeout(1)
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165 BaseHTTPServer.HTTPServer.server_activate(self)
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166
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167 def server_bind(self):
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168 # Removed getfqdn call because it was timing out on localhost when calling gethostbyaddr
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169 self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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170 self.socket.bind(self.server_address)
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171
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172 def get_request(self):
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173 # With Python 2.3 it seems that an accept socket in timeout (nonblocking) mode
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174 # results in request sockets that are also set in nonblocking mode. Since that doesn't play
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175 # well with makefile() (where wfile and rfile are set in SocketServer.py) we explicitly set
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176 # the request socket to blocking
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177
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178 request, client_address = self.socket.accept()
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179 request.setblocking(1)
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180 return request, client_address
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181
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182 def handle_request(self):
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183 """Override handle_request to trap timeout exception."""
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184 try:
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185 BaseHTTPServer.HTTPServer.handle_request(self)
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186 except socket.timeout:
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187 # The only reason for the timeout is so we can notice keyboard
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188 # interrupts on Win32, which don't interrupt accept() by default
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189 return 1
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190 except KeyboardInterrupt:
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191 _cpLogMessage("<Ctrl-C> hit: shutting down", "HTTP")
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192 self.shutdown()
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193
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194 def serve_forever(self):
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195 """Override serve_forever to handle shutdown."""
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196 self.__running = 1
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197 while self.__running:
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198 self.handle_request()
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199
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200 def shutdown(self):
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201 self.__running = 0
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202
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203 _SHUTDOWNREQUEST = (0,0)
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204
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205 class ServerThread(threading.Thread):
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206 def __init__(self, RequestHandlerClass, requestQueue, threadIndex):
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207 threading.Thread.__init__(self)
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208 self._RequestHandlerClass = RequestHandlerClass
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209 self._requestQueue = requestQueue
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210 self._threadIndex = threadIndex
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211
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212 def run(self):
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213 # Call the functions from cpg.server.onStartThreadList
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214 for func in cpg.server.onStartThreadList:
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215 func(self._threadIndex)
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216 while 1:
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217 request, client_address = self._requestQueue.get()
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218 if (request, client_address) == _SHUTDOWNREQUEST:
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219 # Call the functions from cpg.server.onStopThreadList
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220 for func in cpg.server.onStopThreadList:
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221 func()
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222 return
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223 if self.verify_request(request, client_address):
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224 try:
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225 self.process_request(request, client_address)
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226 except:
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227 self.handle_error(request, client_address)
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228 self.close_request(request)
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229 else:
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230 self.close_request(request)
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231
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232 def verify_request(self, request, client_address):
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233 """ Verify the request. May be overridden.
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234 Return 1 if we should proceed with this request. """
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235 return 1
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236
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237 def process_request(self, request, client_address):
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238 self._RequestHandlerClass(request, client_address, self)
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239 self.close_request(request)
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240
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241 def close_request(self, request):
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242 """ Called to clean up an individual request. """
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243 request.close()
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244
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245 def handle_error(self, request, client_address):
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246 """ Handle an error gracefully. May be overridden.
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247 The default is to print a traceback and continue.
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248 """
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249 import traceback, StringIO
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250 bodyFile=StringIO.StringIO()
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251 traceback.print_exc(file=bodyFile)
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252 errorBody=bodyFile.getvalue()
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253 bodyFile.close()
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254 _cputil.getSpecialFunction('_cpLogMessage')(errorBody)
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255
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256
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257 class PooledThreadServer(SocketServer.TCPServer):
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258
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259 allow_reuse_address = 1
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260
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261 """A TCP Server using a pool of worker threads. This is superior to the
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262 alternatives provided by the Python standard library, which only offer
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263 (1) handling a single request at a time, (2) handling each request in
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264 a separate thread (via ThreadingMixIn), or (3) handling each request in
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265 a separate process (via ForkingMixIn). It's also superior in some ways
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266 to the pure async approach used by Twisted because it allows a more
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267 straightforward and simple programming model in the face of blocking
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268 requests (i.e. you don't have to bother with Deferreds)."""
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269 def __init__(self, serverAddress, numThreads, RequestHandlerClass, ThreadClass=ServerThread):
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270 assert(numThreads > 0)
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271 # I know it says "do not override", but I have to in order to implement SSL support !
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272 SocketServer.BaseServer.__init__(self, serverAddress, RequestHandlerClass)
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273 self.socket=socket.socket(self.address_family, self.socket_type)
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274 self.server_bind()
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275 self.server_activate()
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276
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277 self._numThreads = numThreads
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278 self._RequestHandlerClass = RequestHandlerClass
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279 self._ThreadClass = ThreadClass
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280 self._requestQueue = Queue.Queue()
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281 self._workerThreads = []
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282
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283 def createThread(self, threadIndex):
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284 return self._ThreadClass(self._RequestHandlerClass, self._requestQueue, threadIndex)
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285
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286 def start(self):
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287 if self._workerThreads != []:
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288 return
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289 for i in xrange(self._numThreads):
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290 self._workerThreads.append(self.createThread(i))
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291 for worker in self._workerThreads:
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292 worker.start()
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293
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294 def server_close(self):
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295 """Override server_close to shutdown thread pool"""
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296 SocketServer.TCPServer.server_close(self)
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297 for worker in self._workerThreads:
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298 self._requestQueue.put(_SHUTDOWNREQUEST)
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299 for worker in self._workerThreads:
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300 worker.join()
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301 self._workerThreads = []
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302
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303 def server_activate(self):
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304 """Override server_activate to set timeout on our listener socket"""
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305 self.socket.settimeout(1)
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306 SocketServer.TCPServer.server_activate(self)
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307
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308 def server_bind(self):
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309 self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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310 self.socket.bind(self.server_address)
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311
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312 def shutdown(self):
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313 """Gracefully shutdown a server that is serve_forever()ing."""
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314 self.__running = 0
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315
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316 def serve_forever(self):
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317 """Handle one request at a time until doomsday (or shutdown is called)."""
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318 if self._workerThreads == []:
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319 self.start()
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320 self.__running = 1
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321 while self.__running:
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322 if not self.handle_request():
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323 break
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324 self.server_close()
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325
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326 def handle_request(self):
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327 """Override handle_request to enqueue requests rather than handle
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328 them synchronously. Return 1 by default, 0 to shutdown the
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329 server."""
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330 try:
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331 request, client_address = self.get_request()
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332 except KeyboardInterrupt:
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333 _cpLogMessage("<Ctrl-C> hit: shutting down", "HTTP")
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334 return 0
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335 except socket.error, e:
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336 return 1
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337 self._requestQueue.put((request, client_address))
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338 return 1
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339
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340 def get_request(self):
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341 # With Python 2.3 it seems that an accept socket in timeout (nonblocking) mode
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342 # results in request sockets that are also set in nonblocking mode. Since that doesn't play
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343 # well with makefile() (where wfile and rfile are set in SocketServer.py) we explicitly set
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344 # the request socket to blocking
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345
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346 request, client_address = self.socket.accept()
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347 if hasattr(request,'setblocking'):
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348 request.setblocking(1)
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349 return request, client_address
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350