On 16 Jun 2006 13:53:48 -0700, Peter Silva <[EMAIL PROTECTED]> wrote: >Hi folks, > >I have a need in a network data distribution application to send out >data to folks who want it using the protocol of their choice. I´d >like it to support a variety of protocols and I don´t want to >implement any of them :-) >http, ftp (via ftplib) , https (dunno how yet), ssl, ssh, sftp (via >paramiko) > >The thing is... I want rate-limiting so that in the case of a failure >of a single client >I don´t penalize the other clients, or if my server (which is acting >as a client pushing to remote servers.) goes down, it doesn´t saturate >the link when it comes back. > >So I want to have all the protocols limit the number of bytes they send >per second. >It looks like the easiest way to do this is to dive into socket.py... >and look! it says: > ># Wrapper module for _socket, providing some additional facilities ># implemented in Python. > >note the ´additional facilities implemented in python´ ... > >so we just add logic to: >-- add a ´maxrate´ argument to the constructor and/or an attribute to >modify the setting... >-- tally bytes, and time, and know when we are going ´too fast´ >-- when too fast.. in the ´flush´ routine, in the synchronous case, >sleep for the correct time to come back under budget. in the async, >return without writing. > -- do something similar for reading. > > Anybody think this would be fun?
Use Twisted instead. It supports every protocol you mentioned, and rate limiting too. Jean-Paul -- http://mail.python.org/mailman/listinfo/python-list
