I'm working on a distributed computing program and need to send Python objects over a TCP socket. Specifically, the objects that I'm working with subclass the builtin list type (I don't know whether or not that matters), but also include other data fields. These objects are put into dictionaries along with some other control information and the dictionaries are pickled and sent across the network. I'm using the makefile() function in socket to get a file descriptor for the socket and then calling pickle.dump with the dictionary object and the socket file descriptor. I was originally using pickle protocol 0, but then read about the possibility of buffering problems and realized that protocol 0 was giving me strings about 1500 characters long. After some testing, I settled on protocol 2 which manages to package the data into about 400 characters.
In any case, the client side of the program appears to send the data just fine, at least as far as I can tell. On the server side, however, the data takes a very long time to get there and then I get an error in the pickle module: Traceback (most recent call last): File "server.py", line 176, in <module> serv.runServer() File "server.py", line 99, in runServer recvPacket = pickle.load(clientFile) File "/usr/lib/python2.5/pickle.py", line 1370, in load return Unpickler(file).load() File "/usr/lib/python2.5/pickle.py", line 858, in load dispatch[key](self) File "/usr/lib/python2.5/pickle.py", line 1187, in load_appends mark = self.marker() File "/usr/lib/python2.5/pickle.py", line 874, in marker while stack[k] is not mark: k = k-1 IndexError: list index out of range Hopefully I'm doing something obviously wrong, but if anyone can help based on that description or if you need to see the source, please let me know (it's GPL'd). Thank you so much for any help. -Walker Lindley -- This e-mail is licensed under the Creative Commons Attribution-NoDerivs 2.5License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nd/2.5/ or send a letter to Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 94105, USA.
-- http://mail.python.org/mailman/listinfo/python-list
