[Twisted-Python] Protocol dataReceived
bob at redivi.com
Wed Mar 12 17:46:17 EST 2003
On Wednesday, Mar 12, 2003, at 07:51 America/New_York, Philippe
> I hav a question about twisted.protocol. I want to create a new
> server, with
> its own protocol.
> this would be :
Basically what you want to do is look at twisted/protocols/basic.py --
specifically Int16StringReceiver (to see how to read in a
length-prefixed string chunks at a time), NetstringReceiver (an example
of having multiple states), and StatefulStringProtocol (this pattern
will be useful for implementing your commands).
> The problem is that data1, data2, datan, would be binary data.
> I am not sure that it won't pose a problem in strings used with
> (such end of string).
Python strings are entirely 8-bit safe, for example len('\x00hi\xff')
== 4 is a true statement.. so that will not cause you problems unless
the transport has problems with it (i.e. a serial port or tty not
explicitly configured to be 8bit clean may cause problems, and TCP/UDP
sockets as a transport will never have this problem).
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