On Sun, Jul 10, 2011 at 4:59 PM, Littlefield, Tyler <ty...@tysdomain.com> wrote: > Hello all: > I'm working on a server that will need to parse packets sent from a client, > and construct it's own packets. > The setup is something like this: the first two bytes is the type of the > packet. > So, lets say we have a packet set to connect. There are two types of connect > packet: a auth packet and a connect packet. > The connect packet then has two bytes with the type, another byte that notes > that it is a connect packet, and 4 bytes that contains the version of the > client. > The auth packet has the two bytes that tells what packet it is, one byte > denoting that it is an auth packet, then the username, a NULL character, and > a password and a NULL character. > > With all of this said, I'm kind of curious how I would 1) parse out > something like this (I am using twisted, so it'll just be passed to my > Receive function), and how I get the length of the packet with multiple NULL > values. I'm also looking to build a packet and send it back out, is there > something that will allow me to designate two bytes, set individual bits, > then put it altogether in a packet to be sent out?
Just use the struct module[0] to do your packing for you. There's not enough info in your description to write it out for you, but it sounds like it should do everything you need. Geremy Condra [0]: http://docs.python.org/library/struct.html -- http://mail.python.org/mailman/listinfo/python-list
