Hello,
I'm trying to build a very simple IPC system. What I have done is
create Data Transfer Objects (DTO) for each item I'd like to send
across the wire. I am serializing these using cPickle. I've also
tried using pickle (instead of cPickle), but I get the same response.
Below is the code. I'll put the rest of my comments after the code
[BEGIN CODE]
#!/usr/bin/python
import SocketServer
import os, sys
newpath = os.path.normpath( os.path.join( __file__, "../../.." ))
sys.path.insert(0, newpath)
from pop.command.UpdateCommand import *
import cPickle
class RequestHandler(SocketServer.StreamRequestHandler):
"Handles one request to mirror some text."
def handle(self):
total_data=[]
line = True
while line:
line = self.rfile.readline().strip()
total_data.append(line)
receivedCommand = '\n'.join(total_data)
newUpdate = cPickle.loads(receivedCommand)
print type(newUpdate)
for item in newUpdate.items:
print str(type(item)) + " with filename: " + item.filename
if __name__ == '__main__':
import sys
if len(sys.argv) < 3:
print 'Usage: %s [hostname] [port number]' % sys.argv[0]
sys.exit(1)
hostname = sys.argv[1]
port = int(sys.argv[2])
server = SocketServer.ThreadingTCPServer((hostname, port),
RequestHandler)
server.serve_forever()
[/END CODE]
So I can create the UpdateCommand object on the client, send it across
the wire and I get as far as the line
"newUpdate = cPickle.loads(receivedCommand)",
which when it runs produces the following error:
Traceback (most recent call last):
File "C:\Python25\lib\SocketServer.py", line 464, in
process_request_thread
self.finish_request(request, client_address)
File "C:\Python25\lib\SocketServer.py", line 254, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "C:\Python25\lib\SocketServer.py", line 522, in __init__
self.handle()
File "C:\Documents and Settings\dwatrous\My Documents\projects\POP
\svn\pop\lib\server.py", line 29, in handle
newUpdate = cPickle.loads(receivedCommand)
ImportError: No module named UpdateCommand
I import the module at the top of the file server.py, but it doesn't
throw the ImportError until it tries to unpickle.
Please help with any ideas that you have.
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