Package xmpp :: Module dispatcher :: Class Dispatcher

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# Class Dispatcher

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    client.PlugIn --+
                    |
                   Dispatcher

Ancestor of PlugIn class. Handles XMPP stream, i.e. aware of stream headers. Can be plugged out/in to restart these headers (used for SASL f.e.).

Instance Methods | [hide private]

__init__(self) | source code

dumpHandlers(self) Return set of user-registered callbacks in it's internal format. | source code

restoreHandlers(self, handlers) Restores user-registered callbacks structure from dump previously obtained via dumpHandlers. | source code

_init(self) Registers default namespaces/protocols/handlers. | source code

plugin(self, owner) Plug the Dispatcher instance into Client class instance and send initial stream header. | source code

plugout(self) Prepares instance to be destructed. | source code

StreamInit(self) Send an initial stream header. | source code

_check_stream_start(self, ns, tag, attrs) | source code

Process(self, timeout=0) Check incoming stream for data waiting. | source code

RegisterNamespace(self, xmlns, order=`'``info``'`) Creates internal structures for newly registered namespace. | source code

RegisterProtocol(self, tag_name, Proto, xmlns=None, order=`'``info``'`) Used to declare some top-level stanza name to dispatcher. | source code

RegisterNamespaceHandler(self, xmlns, handler, typ=`'````'`, ns=`'````'`, makefirst=0, system=0) Register handler for processing all stanzas for specified namespace. | source code

RegisterHandler(self, name, handler, typ=`'````'`, ns=`'````'`, xmlns=None, makefirst=0, system=0) Register user callback as stanzas handler of declared type. | source code

RegisterHandlerOnce(self, name, handler, typ=`'````'`, ns=`'````'`, xmlns=None, makefirst=0, system=0) Unregister handler after first call (not implemented yet). | source code

UnregisterHandler(self, name, handler, typ=`'````'`, ns=`'````'`, xmlns=None) Unregister handler. | source code

RegisterDefaultHandler(self, handler) Specify the handler that will be used if no NodeProcessed exception were raised. | source code

RegisterEventHandler(self, handler) Register handler that will process events. | source code

returnStanzaHandler(self, conn, stanza) Return stanza back to the sender with <feature-not-implemennted/> error set. | source code

streamErrorHandler(self, conn, error) | source code

RegisterCycleHandler(self, handler) Register handler that will be called on every Dispatcher.Process() call. | source code

UnregisterCycleHandler(self, handler) Unregister handler that will is called on every Dispatcher.Process() call. | source code

Event(self, realm, event, data) Raise some event. | source code

dispatch(self, stanza, session=None, direct=0) Main procedure that performs XMPP stanza recognition and calling apppropriate handlers for it. | source code

WaitForResponse(self, ID, timeout=25) Block and wait until stanza with specific "id" attribute will come. | source code

SendAndWaitForResponse(self, stanza, timeout=25) Put stanza on the wire and wait for recipient's response to it. | source code

SendAndCallForResponse(self, stanza, func, args=`{``}`) Put stanza on the wire and call back when recipient replies. | source code

send(self, stanza) Serialise stanza and put it on the wire. | source code

disconnect(self) Send a stream terminator and and handle all incoming stanzas before stream closure. | source code

Inherited from `client.PlugIn`: `DEBUG`, `PlugIn`, `PlugOut`

Method Details | [hide private]

### __init__(self)
(Constructor)

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Overrides: client.PlugIn.__init__

### dumpHandlers(self)

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Return set of user-registered callbacks in it's internal format. Used within the library to carry user handlers set over Dispatcher replugins.

### restoreHandlers(self, handlers)

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Restores user-registered callbacks structure from dump previously obtained via dumpHandlers. Used within the library to carry user handlers set over Dispatcher replugins.

### _init(self)

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Registers default namespaces/protocols/handlers. Used internally.

### plugin(self, owner)

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Plug the Dispatcher instance into Client class instance and send initial stream header. Used internally.

### Process(self, timeout=0)

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Check incoming stream for data waiting. If "timeout" is positive - block for as max. this time. Returns: 1) length of processed data if some data were processed; 2) '0' string if no data were processed but link is alive; 3) 0 (zero) if underlying connection is closed. Take note that in case of disconnection detect during Process() call disconnect handlers are called automatically.

### RegisterNamespace(self, xmlns, order=`'``info``'`)

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Creates internal structures for newly registered namespace. You can register handlers for this namespace afterwards. By default one namespace already registered (jabber:client or jabber:component:accept depending on context.

### RegisterProtocol(self, tag_name, Proto, xmlns=None, order=`'``info``'`)

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Used to declare some top-level stanza name to dispatcher. Needed to start registering handlers for such stanzas. Iq, message and presence protocols are registered by default.

### RegisterHandler(self, name, handler, typ=`'````'`, ns=`'````'`, xmlns=None, makefirst=0, system=0)

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    Register user callback as stanzas handler of declared type. Callback must take
    (if chained, see later) arguments: dispatcher instance (for replying), incomed
    return of previous handlers.
    The callback must raise xmpp.NodeProcessed just before return if it want preven
    callbacks to be called with the same stanza as argument _and_, more importantly
    library from returning stanza to sender with error set (to be enabled in 0.2 ve
     Arguments:
       "name" - name of stanza. F.e. "iq".
       "handler" - user callback.
       "typ" - value of stanza's "type" attribute. If not specified any value match
       "ns" - namespace of child that stanza must contain.
       "chained" - chain together output of several handlers.
       "makefirst" - insert handler in the beginning of handlers list instead of
         adding it to the end. Note that more common handlers (i.e. w/o "typ" and "
         will be called first nevertheless.
       "system" - call handler even if NodeProcessed Exception were raised already.

### UnregisterHandler(self, name, handler, typ=`'````'`, ns=`'````'`, xmlns=None)

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Unregister handler. "typ" and "ns" must be specified exactly the same as with registering.

### RegisterDefaultHandler(self, handler)

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Specify the handler that will be used if no NodeProcessed exception were raised. This is returnStanzaHandler by default.

### RegisterEventHandler(self, handler)

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Register handler that will process events. F.e. "FILERECEIVED" event.

### Event(self, realm, event, data)

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Raise some event. Takes three arguments: 1) "realm" - scope of event. Usually a namespace. 2) "event" - the event itself. F.e. "SUCESSFULL SEND". 3) data that comes along with event. Depends on event.

### dispatch(self, stanza, session=None, direct=0)

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Main procedure that performs XMPP stanza recognition and calling apppropriate handlers for it. Called internally.

### WaitForResponse(self, ID, timeout=25)

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Block and wait until stanza with specific "id" attribute will come. If no such stanza is arrived within timeout, return None. If operation failed for some reason then owner's attributes lastErrNode, lastErr and lastErrCode are set accordingly.

### SendAndCallForResponse(self, stanza, func, args=`{``}`)

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Put stanza on the wire and call back when recipient replies. Additional callback arguments can be specified in args.

### send(self, stanza)

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Serialise stanza and put it on the wire. Assign an unique ID to it before send. Returns assigned ID.