Mercurial > vim

annotate src/testdir/test_channel.py @ 7916:54602dcac207 v7.4.1254

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commit https://github.com/vim/vim/commit/3b05b135e3ee4cfd59983fd63461e8f7642c1713 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Feb 3 23:25:07 2016 +0100 patch 7.4.1254 Problem: Opening a second channel causes a crash. (Ken Takata) Solution: Don't re-allocate the array with channels.
author Christian Brabandt <cb@256bit.org>
date Wed, 03 Feb 2016 23:30:04 +0100
parents 35973ce58c84
children ce5a7a613867
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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 # Run this server and then in Vim you can open the channel:
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5 # :let handle = ch_open('localhost:8765', 'json')
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6 #
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7 # Then Vim can send requests to the server:
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8 # :let response = ch_sendexpr(handle, 'hello!')
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9 #
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10 # See ":help channel-demo" in Vim.
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11 #
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12 # This requires Python 2.6 or later.
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13
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14 from __future__ import print_function
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15 import json
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16 import socket
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17 import sys
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18 import threading
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20 try:
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21 # Python 3
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22 import socketserver
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23 except ImportError:
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24 # Python 2
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25 import SocketServer as socketserver
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27 class ThreadedTCPRequestHandler(socketserver.BaseRequestHandler):
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29 def handle(self):
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30 print("=== socket opened ===")
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31 while True:
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32 try:
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33 received = self.request.recv(4096).decode('utf-8')
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34 except socket.error:
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35 print("=== socket error ===")
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36 break
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37 except IOError:
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38 print("=== socket closed ===")
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39 break
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40 if received == '':
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41 print("=== socket closed ===")
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42 break
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43 print("received: {}".format(received))
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44
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45 # We may receive two messages at once. Take the part up to the
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46 # matching "]" (recognized by finding "][").
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47 todo = received
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48 while todo != '':
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49 splitidx = todo.find('][')
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50 if splitidx < 0:
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51 used = todo
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52 todo = ''
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53 else:
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54 used = todo[:splitidx + 1]
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55 todo = todo[splitidx + 1:]
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56 if used != received:
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57 print("using: {}".format(used))
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58
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59 try:
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60 decoded = json.loads(used)
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61 except ValueError:
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62 print("json decoding failed")
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63 decoded = [-1, '']
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64
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65 # Send a response if the sequence number is positive.
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66 if decoded[0] >= 0:
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67 if decoded[1] == 'hello!':
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68 # simply send back a string
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69 response = "got it"
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70 elif decoded[1] == 'make change':
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71 # Send two ex commands at the same time, before replying to
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72 # the request.
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73 cmd = '["ex","call append(\\"$\\",\\"added1\\")"]'
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74 cmd += '["ex","call append(\\"$\\",\\"added2\\")"]'
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75 print("sending: {}".format(cmd))
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76 self.request.sendall(cmd.encode('utf-8'))
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77 response = "ok"
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78 elif decoded[1] == 'eval-works':
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79 # Send an eval request. We ignore the response.
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80 cmd = '["eval","\\"foo\\" . 123", -1]'
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81 print("sending: {}".format(cmd))
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82 self.request.sendall(cmd.encode('utf-8'))
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83 response = "ok"
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84 elif decoded[1] == 'eval-fails':
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85 # Send an eval request that will fail.
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86 cmd = '["eval","xxx", -2]'
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87 print("sending: {}".format(cmd))
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88 self.request.sendall(cmd.encode('utf-8'))
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89 response = "ok"
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90 elif decoded[1] == 'eval-result':
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91 # Send back the last received eval result.
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92 response = last_eval
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93 elif decoded[1] == '!quit!':
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94 # we're done
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95 sys.exit(0)
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96 elif decoded[1] == '!crash!':
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97 # Crash!
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98 42 / 0
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99 else:
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100 response = "what?"
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101
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102 encoded = json.dumps([decoded[0], response])
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103 print("sending: {}".format(encoded))
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104 self.request.sendall(encoded.encode('utf-8'))
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105
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106 # Negative numbers are used for "eval" responses.
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107 elif decoded[0] < 0:
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108 last_eval = decoded
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109
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110 class ThreadedTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
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111 pass
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112
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113 if __name__ == "__main__":
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114 HOST, PORT = "localhost", 0
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115
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116 server = ThreadedTCPServer((HOST, PORT), ThreadedTCPRequestHandler)
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117 ip, port = server.server_address
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118
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119 # Start a thread with the server -- that thread will then start one
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120 # more thread for each request
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121 server_thread = threading.Thread(target=server.serve_forever)
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123 # Exit the server thread when the main thread terminates
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124 server_thread.daemon = True
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125 server_thread.start()
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126
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127 # Write the port number in Xportnr, so that the test knows it.
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128 f = open("Xportnr", "w")
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129 f.write("{}".format(port))
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130 f.close()
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131
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132 # Block here
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133 print("Listening on port {}".format(port))
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134 server.serve_forever()