Maybe you want to take a look at the FTPClientBasic class in http://twistedmatrix.com/trac/browser/trunk/twisted/protocols/ftp.py . There the author basically uses a queue of actions (=hand shakes) to be run, associating response lines to commands, and returning the results via deferreds.... On Sat, 2006-08-05 at 11:44 +0800, Keith Cheung (張國良) wrote:
Hi all,
I want to implement some handshake protocol, say..
1. Client: WhatDate 2. Server: 5Aug 3. Client: WhatYear 4. Server: 2006 5. Client: WhatTime 6. Server: 1005
So, for the client:- (pseudo code) def connectionMade(): send "WhatDate" state = askingForDate def lineReceived(data): switch state: askingForDate: date = data send "WhatYear" state = askingForYear break askingForYear: year = data send = "WhatTime" state = askingForTime break askingForTime: time = data state = initialState disconnect
The switch case becomes gigantic as the protocol grow. Instead of keeping states, are there better ways to implement?
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