Package twisted :: Package protocols :: Module msn
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Module twisted.protocols.msn

MSNP7 Protocol (client only)

Stability: unstable.

This module provides support for clients using the MSN Protocol (MSNP7). There are basically 3 servers involved in any MSN session:
  1. Dispatch server

    The MSNDispatchClient class handles connections to the dispatch server, which basically delegates users to a suitable notification server.

    You will want to subclass this and handle the gotReferral method appropriately.
  2. Notification Server

    The MSNNotificationClient class handles connections to the notification server, which acts as a session server (state updates, message negotiation etc...)
  3. Switcboard Server

    The MSNSwitchboardClient handles connections to switchboard servers which are used to conduct conversations with other users.

There are also two classes (MSNFileSend and MSNFileReceive) used for file transfers.

Clients handle events in two ways.

Most client request callbacks require more than one argument, and since Deferreds can only pass the callback one result, most of the time the callback argument will be a tuple of values (documented in the respective request method). To make reading/writing code easier, callbacks can be defined in a number of ways to handle this 'cleanly'. One way would be to define methods like: def callBack(self, (arg1, arg2, arg)): ... another way would be to do something like d.addCallback(lambda result: myCallback(*result)).

If the server sends an error response to a client request, the errback of the corresponding Deferred will be called, the argument being the corresponding error code.

NOTE Due to the lack of an 'official' spec for MSNP7, extra checking than may be deemed necessary often takes place considering the server is never 'wrong'. Thus, if gotBadLine (in any of the 3 main clients) is called, or an MSNProtocolError is raised, it's probably a good idea to submit a bug report. ;)

TODO


Author: Sam Jordan

Classes
MSNContact This class represents a contact (user).
MSNContactList This class represents a basic MSN contact list.
MSNDispatchClient This class provides support for clients connecting to the dispatch server
MSNEventBase This class provides support for handling / dispatching events and is the base class of the three main client protocols (MSNDispatchClient, MSNNotificationClient, MSNSwitchboardClient)
MSNFileReceive This class provides support for receiving files from contacts.
MSNFileSend This class provides support for sending files to other contacts.
MSNMessage I am the class used to represent an 'instant' message.
MSNNotificationClient This class provides support for clients connecting to the notification server.
MSNSwitchboardClient this class provides support for clients connecting to a switchboard server.

Exceptions
MSNProtocolError This Exception is basically used for debugging purposes, as the official MSN server should never send anything _wrong_ and nobody in their right mind would run their own MSN server...if it is raised by default command handlers (handle_BLAH) the error will be logged.

Function Summary
  checkParamLen(num, expected, cmd, error)

Variable Summary
str ALLOW_LIST = 'al'
str BLOCK_LIST = 'bl'
str CR = '\r'
dict errorCodes = {707: 'Could not create connection', 601: '...
str FORWARD_LIST = 'fl'
str HAS_PAGER = 'MOB'
str HOME_PHONE = 'PHH'
str LF = '\n'
str MOBILE_PHONE = 'PHM'
str REVERSE_LIST = 'rl'
str STATUS_AWAY = 'AWY'
str STATUS_BRB = 'BRB'
str STATUS_BUSY = 'BSY'
str STATUS_HIDDEN = 'HDN'
str STATUS_IDLE = 'IDL'
str STATUS_LUNCH = 'LUN'
str STATUS_OFFLINE = 'FLN'
str STATUS_ONLINE = 'NLN'
str STATUS_PHONE = 'PHN'
dict statusCodes = {'PHN': 'On the Phone', 'IDL': 'Idle', 'BS...
str WORK_PHONE = 'PHW'

Variable Details

ALLOW_LIST

Type:
str
Value:
'al'                                                                   

BLOCK_LIST

Type:
str
Value:
'bl'                                                                   

CR

Type:
str
Value:
'\r'                                                                   

errorCodes

Type:
dict
Value:
{200: 'Syntax error',
 201: 'Invalid parameter',
 205: 'Invalid user',
 206: 'Domain name missing',
 207: 'Already logged in',
 208: 'Invalid username',
 209: 'Invalid screen name',
 210: 'User list full',
...                                                                    

FORWARD_LIST

Type:
str
Value:
'fl'                                                                   

HAS_PAGER

Type:
str
Value:
'MOB'                                                                  

HOME_PHONE

Type:
str
Value:
'PHH'                                                                  

LF

Type:
str
Value:
'''
'''                                                                    

MOBILE_PHONE

Type:
str
Value:
'PHM'                                                                  

REVERSE_LIST

Type:
str
Value:
'rl'                                                                   

STATUS_AWAY

Type:
str
Value:
'AWY'                                                                  

STATUS_BRB

Type:
str
Value:
'BRB'                                                                  

STATUS_BUSY

Type:
str
Value:
'BSY'                                                                  

STATUS_HIDDEN

Type:
str
Value:
'HDN'                                                                  

STATUS_IDLE

Type:
str
Value:
'IDL'                                                                  

STATUS_LUNCH

Type:
str
Value:
'LUN'                                                                  

STATUS_OFFLINE

Type:
str
Value:
'FLN'                                                                  

STATUS_ONLINE

Type:
str
Value:
'NLN'                                                                  

STATUS_PHONE

Type:
str
Value:
'PHN'                                                                  

statusCodes

Type:
dict
Value:
{'AWY': 'Away',
 'BRB': 'Be Right Back',
 'BSY': 'Busy',
 'FLN': 'Offline',
 'HDN': 'Appear Offline',
 'IDL': 'Idle',
 'LUN': 'Out to Lunch',
 'NLN': 'Online',
...                                                                    

WORK_PHONE

Type:
str
Value:
'PHW'                                                                  

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