Package nbxmpp :: Module dispatcher_nb :: Class XMPPDispatcher |
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# Class XMPPDispatcher

source code

Handles XMPP stream and is the first who takes control over a fresh stanza

Is plugged into NonBlockingClient but can be replugged to restart handled stream headers (used by SASL f.e.).

Instance Methods | [hide private]
__init__(self) | source code
getAnID(self) | source code
dumpHandlers(self) Return set of user-registered callbacks in it's internal format. Used within the library to carry user handlers set over Dispatcher replugins | source code
restoreHandlers(self, handlers) Restore user-registered callbacks structure from dump previously obtained via dumpHandlers. Used within the library to carry user handlers set over Dispatcher replugins. | source code
_init(self) Register default namespaces/protocols/handlers. Used internally | source code
plugin(self, owner) Plug the Dispatcher instance into Client class instance and send initial stream header. Used internally | source code
plugout(self) Prepare instance to be destructed | source code
StreamInit(self) Send an initial stream header | source code
_check_stream_start(self, ns, tag, attrs) | source code
replace_non_character(self, data) | source code
ProcessNonBlocking(self, data) Check incoming stream for data waiting | source code
RegisterNamespace(self, xmlns, order=`'``info``'`) Create 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=False, system=False) 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. "typ" and "ns" must be specified exactly the same as with registering. | source code
RegisterDefaultHandler(self, handler) Specify the handler that will be used if no NodeProcessed exception were raised. This is returnStanzaHandler by default. | source code
RegisterEventHandler(self, handler) Register handler that will process events. F.e. "FILERECEIVED" event. See common/connection: _event_dispatcher() | source code
returnStanzaHandler(self, conn, stanza) Return stanza back to the sender with <feature-not-implemented/> error set | 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. Called by simplexml | source code
_WaitForData(self, data) Internal wrapper around ProcessNonBlocking. Will check for | source code
SendAndWaitForResponse(self, stanza, timeout=None, func=None, args=None) Send stanza and wait for recipient's response to it. Will call transports on_timeout callback if response is not retrieved in time | source code
SendAndCallForResponse(self, stanza, func=None, args=None) Put stanza on the wire and call back when recipient replies. Additional callback arguments can be specified in args | source code
send(self, stanza, now=False) Wrap transports send method when plugged into NonBlockingClient. Makes sure stanzas get ID and from tag. | source code
Inherited from `plugin.PlugIn`: `PlugIn`, `PlugOut`

Class Methods | [hide private]
Inherited from `plugin.PlugIn`: `get_instance`

Method Details | [hide private]

### __init__(self) (Constructor) | source code
Overrides: plugin.PlugIn.__init__

### getAnID(self) | source code

### dumpHandlers(self) | source code
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) | source code
Restore user-registered callbacks structure from dump previously obtained via dumpHandlers. Used within the library to carry user handlers set over Dispatcher replugins.

### _init(self) | source code
Register default namespaces/protocols/handlers. Used internally

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

### plugout(self) | source code
Prepare instance to be destructed

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

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

### replace_non_character(self, data) | source code

### ProcessNonBlocking(self, data) | source code
Check incoming stream for data waiting Parameters: `data` - data received from transports/IO sockets Returns: length of processed data if some data were processed; '0' string if no data were processed but link is alive; 0 (zero) if underlying connection is closed.

### RegisterNamespace(self, xmlns, order=`'``info``'`) | source code
Create internal structures for newly registered namespace You can register handlers for this namespace afterwards. By default one namespace is already registered (jabber:client or jabber:component:accept depending on context.

### RegisterProtocol(self, tag_name, Proto, xmlns=None, order=`'``info``'`) | source code
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.

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

### RegisterHandler(self, name, handler, typ=`'````'`, ns=`'````'`, xmlns=None, makefirst=False, system=False) | source code
Register user callback as stanzas handler of declared type Callback arguments: dispatcher instance (for replying), incoming return of previous handlers. The callback must raise xmpp.NodeProcessed just before return if it wants to prevent other callbacks to be called with the same stanza as argument _and_, more importantly library from returning stanza to sender with error set. Parameters: `name` - name of stanza. F.e. "iq". `handler` - user callback. `typ` - value of stanza's "type" attribute. If not specified any value will match `ns` - namespace of child that stanza must contain. `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.

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

### UnregisterHandler(self, name, handler, typ=`'````'`, ns=`'````'`, xmlns=None) | source code
Unregister handler. "typ" and "ns" must be specified exactly the same as with registering.

### RegisterDefaultHandler(self, handler) | source code
Specify the handler that will be used if no NodeProcessed exception were raised. This is returnStanzaHandler by default.

### RegisterEventHandler(self, handler) | source code
Register handler that will process events. F.e. "FILERECEIVED" event. See common/connection: _event_dispatcher()

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

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

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

### Event(self, realm, event, data) | source code
Raise some event Parameters: `realm` - scope of event. Usually a namespace. `event` - the event itself. F.e. "SUCCESSFUL SEND". `data` - data that comes along with event. Depends on event.

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

### _WaitForData(self, data) | source code
Internal wrapper around ProcessNonBlocking. Will check for

### SendAndWaitForResponse(self, stanza, timeout=None, func=None, args=None) | source code
Send stanza and wait for recipient's response to it. Will call transports on_timeout callback if response is not retrieved in time Be aware: Only timeout of latest call of SendAndWait is active.

### SendAndCallForResponse(self, stanza, func=None, args=None) | source code
Put stanza on the wire and call back when recipient replies. Additional callback arguments can be specified in args

### send(self, stanza, now=False) | source code
Wrap transports send method when plugged into NonBlockingClient. Makes sure stanzas get ID and from tag.