Mercurial > vim

annotate src/testdir/test_channel.py @ 8653:d80edead9675 v7.4.1616

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commit https://github.com/vim/vim/commit/ac74d5e86cd16b42e81ba48f58f3d45c72758248 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Mar 20 14:31:00 2016 +0100 patch 7.4.1616 Problem: Malformed channel request causes a hang. Solution: Drop malformed message. (Damien)
author Christian Brabandt <cb@256bit.org>
date Sun, 20 Mar 2016 14:45:04 +0100
parents 8894d595b786
children 1eb302bf2475
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/python
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2 #
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3 # Server that will accept connections from a Vim channel.
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4 # Used by test_channel.vim.
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5 #
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6 # This requires Python 2.6 or later.
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8 from __future__ import print_function
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9 import json
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10 import socket
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11 import sys
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12 import time
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13 import threading
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14
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15 try:
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16 # Python 3
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17 import socketserver
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18 except ImportError:
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19 # Python 2
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20 import SocketServer as socketserver
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22 class ThreadedTCPRequestHandler(socketserver.BaseRequestHandler):
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24 def handle(self):
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25 print("=== socket opened ===")
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26 while True:
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27 try:
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28 received = self.request.recv(4096).decode('utf-8')
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29 except socket.error:
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30 print("=== socket error ===")
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31 break
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32 except IOError:
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33 print("=== socket closed ===")
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34 break
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35 if received == '':
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36 print("=== socket closed ===")
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37 break
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38 print("received: {}".format(received))
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40 # We may receive two messages at once. Take the part up to the
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41 # matching "]" (recognized by finding "][").
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42 todo = received
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43 while todo != '':
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44 splitidx = todo.find('][')
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45 if splitidx < 0:
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46 used = todo
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47 todo = ''
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48 else:
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49 used = todo[:splitidx + 1]
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50 todo = todo[splitidx + 1:]
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51 if used != received:
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52 print("using: {}".format(used))
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54 try:
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55 decoded = json.loads(used)
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56 except ValueError:
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57 print("json decoding failed")
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58 decoded = [-1, '']
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59
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60 # Send a response if the sequence number is positive.
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61 if decoded[0] >= 0:
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62 if decoded[1] == 'hello!':
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63 # simply send back a string
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64 response = "got it"
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65 elif decoded[1].startswith("echo "):
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66 # send back the argument
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67 response = decoded[1][5:]
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68 elif decoded[1] == 'make change':
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69 # Send two ex commands at the same time, before
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70 # replying to the request.
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71 cmd = '["ex","call append(\\"$\\",\\"added1\\")"]'
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72 cmd += '["ex","call append(\\"$\\",\\"added2\\")"]'
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73 print("sending: {}".format(cmd))
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74 self.request.sendall(cmd.encode('utf-8'))
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75 response = "ok"
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76 elif decoded[1] == 'do normal':
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77 # Send a normal command.
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78 cmd = '["normal","G$s more\u001b"]'
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79 print("sending: {}".format(cmd))
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80 self.request.sendall(cmd.encode('utf-8'))
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81 response = "ok"
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82 elif decoded[1] == 'eval-works':
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83 # Send an eval request. We ignore the response.
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84 cmd = '["expr","\\"foo\\" . 123", -1]'
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85 print("sending: {}".format(cmd))
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86 self.request.sendall(cmd.encode('utf-8'))
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87 response = "ok"
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88 elif decoded[1] == 'eval-fails':
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89 # Send an eval request that will fail.
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90 cmd = '["expr","xxx", -2]'
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91 print("sending: {}".format(cmd))
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92 self.request.sendall(cmd.encode('utf-8'))
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93 response = "ok"
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94 elif decoded[1] == 'eval-error':
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95 # Send an eval request that works but the result can't
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96 # be encoded.
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97 cmd = '["expr","function(\\"tr\\")", -3]'
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98 print("sending: {}".format(cmd))
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99 self.request.sendall(cmd.encode('utf-8'))
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100 response = "ok"
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101 elif decoded[1] == 'eval-bad':
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102 # Send an eval request missing the third argument.
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103 cmd = '["expr","xxx"]'
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diff changeset
104 print("sending: {}".format(cmd))
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105 self.request.sendall(cmd.encode('utf-8'))
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diff changeset
106 response = "ok"
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107 elif decoded[1] == 'malformed':
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108 cmd = '["ex",":"]wrong!["ex","smi"]'
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109 print("sending: {}".format(cmd))
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110 self.request.sendall(cmd.encode('utf-8'))
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111 response = "ok"
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112 elif decoded[1] == 'an expr':
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113 # Send an expr request.
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114 cmd = '["expr","setline(\\"$\\", [\\"one\\",\\"two\\",\\"three\\"])"]'
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115 print("sending: {}".format(cmd))
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116 self.request.sendall(cmd.encode('utf-8'))
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117 response = "ok"
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118 elif decoded[1] == 'call-func':
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119 cmd = '["call","MyFunction",[1,2,3], 0]'
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120 print("sending: {}".format(cmd))
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121 self.request.sendall(cmd.encode('utf-8'))
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122 response = "ok"
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123 elif decoded[1] == 'redraw':
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124 cmd = '["redraw",""]'
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125 print("sending: {}".format(cmd))
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126 self.request.sendall(cmd.encode('utf-8'))
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127 response = "ok"
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128 elif decoded[1] == 'redraw!':
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129 cmd = '["redraw","force"]'
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130 print("sending: {}".format(cmd))
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131 self.request.sendall(cmd.encode('utf-8'))
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132 response = "ok"
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133 elif decoded[1] == 'empty-request':
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134 cmd = '[]'
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135 print("sending: {}".format(cmd))
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136 self.request.sendall(cmd.encode('utf-8'))
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137 response = "ok"
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138 elif decoded[1] == 'eval-result':
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139 # Send back the last received eval result.
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140 response = last_eval
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141 elif decoded[1] == 'call me':
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142 cmd = '[0,"we called you"]'
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143 print("sending: {}".format(cmd))
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144 self.request.sendall(cmd.encode('utf-8'))
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145 response = "ok"
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146 elif decoded[1] == 'call me again':
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147 cmd = '[0,"we did call you"]'
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148 print("sending: {}".format(cmd))
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149 self.request.sendall(cmd.encode('utf-8'))
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150 response = ""
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151 elif decoded[1] == 'send zero':
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152 cmd = '[0,"zero index"]'
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153 print("sending: {}".format(cmd))
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154 self.request.sendall(cmd.encode('utf-8'))
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155 response = "sent zero"
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156 elif decoded[1] == 'close me':
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157 print("closing")
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158 self.request.close()
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159 response = ""
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160 elif decoded[1] == 'wait a bit':
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161 time.sleep(0.2)
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162 response = "waited"
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163 elif decoded[1] == '!quit!':
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164 # we're done
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165 self.server.shutdown()
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166 return
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167 elif decoded[1] == '!crash!':
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168 # Crash!
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169 42 / 0
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170 else:
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171 response = "what?"
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172
8009
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173 if response == "":
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174 print("no response")
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175 else:
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176 encoded = json.dumps([decoded[0], response])
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177 print("sending: {}".format(encoded))
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178 self.request.sendall(encoded.encode('utf-8'))
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179
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180 # Negative numbers are used for "eval" responses.
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181 elif decoded[0] < 0:
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182 last_eval = decoded
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183
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184 class ThreadedTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
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185 pass
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186
8114
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187 def writePortInFile(port):
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188 # Write the port number in Xportnr, so that the test knows it.
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189 f = open("Xportnr", "w")
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190 f.write("{}".format(port))
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191 f.close()
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192
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193 if __name__ == "__main__":
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194 HOST, PORT = "localhost", 0
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195
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196 # Wait half a second before opening the port to test waittime in ch_open().
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197 # We do want to get the port number, get that first. We cannot open the
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198 # socket, guess a port is free.
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199 if len(sys.argv) >= 2 and sys.argv[1] == 'delay':
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200 PORT = 13684
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201 writePortInFile(PORT)
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202
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203 print("Wait for it...")
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204 time.sleep(0.5)
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205
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206 server = ThreadedTCPServer((HOST, PORT), ThreadedTCPRequestHandler)
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207 ip, port = server.server_address
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208
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209 # Start a thread with the server. That thread will then start a new thread
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210 # for each connection.
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211 server_thread = threading.Thread(target=server.serve_forever)
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212 server_thread.start()
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213
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214 writePortInFile(port)
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216 print("Listening on port {}".format(port))
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217
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218 # Main thread terminates, but the server continues running
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219 # until server.shutdown() is called.
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220 try:
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221 while server_thread.isAlive():
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222 server_thread.join(1)
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223 except (KeyboardInterrupt, SystemExit):
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224 server.shutdown()