Mercurial > vim

annotate src/testdir/test_channel.py @ 7906:ea1fd8d750a6 v7.4.1249

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commit https://github.com/vim/vim/commit/fcb1e3d16832ce06da0dc38ecb7ab9aaa3ee4383 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Feb 3 21:32:46 2016 +0100 patch 7.4.1249 Problem: Crash when the process a channel is connected to exits. Solution: Use the file descriptor properly. Add a test. (Damien) Also add a test for eval().
author Christian Brabandt <cb@256bit.org>
date Wed, 03 Feb 2016 21:45:04 +0100
parents f12d6235a753
children 1c6ef9113556
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 thesocket = None
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29 class ThreadedTCPRequestHandler(socketserver.BaseRequestHandler):
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30
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31 def handle(self):
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32 print("=== socket opened ===")
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33 global thesocket
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34 thesocket = self.request
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35 while True:
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36 try:
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37 data = self.request.recv(4096).decode('utf-8')
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38 except socket.error:
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39 print("=== socket error ===")
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40 break
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41 except IOError:
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42 print("=== socket closed ===")
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43 break
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44 if data == '':
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45 print("=== socket closed ===")
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46 break
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47 print("received: {}".format(data))
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48 try:
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49 decoded = json.loads(data)
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50 except ValueError:
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51 print("json decoding failed")
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52 decoded = [-1, '']
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53
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54 # Send a response if the sequence number is positive.
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55 if decoded[0] >= 0:
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56 if decoded[1] == 'hello!':
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57 # simply send back a string
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58 response = "got it"
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59 elif decoded[1] == 'make change':
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60 # Send two ex commands at the same time, before replying to
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61 # the request.
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62 cmd = '["ex","call append(\\"$\\",\\"added1\\")"]'
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63 cmd += '["ex","call append(\\"$\\",\\"added2\\")"]'
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64 print("sending: {}".format(cmd))
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65 thesocket.sendall(cmd.encode('utf-8'))
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66 response = "ok"
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67 elif decoded[1] == 'eval-works':
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68 # Send an eval request. We ignore the response.
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69 cmd = '["eval","\\"foo\\" . 123", -1]'
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70 print("sending: {}".format(cmd))
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71 thesocket.sendall(cmd.encode('utf-8'))
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72 response = "ok"
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73 elif decoded[1] == 'eval-fails':
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74 # Send an eval request that will fail.
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75 cmd = '["eval","xxx", -2]'
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76 print("sending: {}".format(cmd))
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77 thesocket.sendall(cmd.encode('utf-8'))
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78 response = "ok"
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79 elif decoded[1] == 'eval-result':
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80 # Send back the last received eval result.
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81 response = last_eval
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82 elif decoded[1] == '!quit!':
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83 # we're done
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84 sys.exit(0)
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85 elif decoded[1] == '!crash!':
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86 # Crash!
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87 42 / 0
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88 else:
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89 response = "what?"
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90
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91 encoded = json.dumps([decoded[0], response])
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92 print("sending: {}".format(encoded))
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93 thesocket.sendall(encoded.encode('utf-8'))
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94
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95 # Negative numbers are used for "eval" responses.
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96 elif decoded[0] < 0:
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97 last_eval = decoded
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98
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99 thesocket = None
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100
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101 class ThreadedTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
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102 pass
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103
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104 if __name__ == "__main__":
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105 HOST, PORT = "localhost", 0
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106
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107 server = ThreadedTCPServer((HOST, PORT), ThreadedTCPRequestHandler)
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108 ip, port = server.server_address
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109
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110 # Start a thread with the server -- that thread will then start one
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111 # more thread for each request
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112 server_thread = threading.Thread(target=server.serve_forever)
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113
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114 # Exit the server thread when the main thread terminates
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115 server_thread.daemon = True
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116 server_thread.start()
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117
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118 # Write the port number in Xportnr, so that the test knows it.
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119 f = open("Xportnr", "w")
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120 f.write("{}".format(port))
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121 f.close()
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122
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123 # Block here
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124 print("Listening on port {}".format(port))
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125 server.serve_forever()