:orphan:

Router Configuration
====================

*Routers* are the core facilities of Crossbar.io, responsible for
routing WAMP remote procedure calls between *Callers* and *Callees*, as
well as routing WAMP publish-subscribe events between *Publishers* and
*Subscribers*.

A Crossbar.io instance will usually be running at least one *Router*,
unless is used solely to run application components in *Workers* or
*Guests*.

A *Router* is configured as a *Worker*, more precisely a *Native
Worker*, process of ``type == "router"``:

.. code:: javascript

    {
       "workers": [
          {
             "type": "router",
             "options": {
                // router options go here
             },
             "realms": [
                // realms managed by this router
             ],
             "transports": [
                // transports run by this router
             ],
             "components": [
                // app components running side-by-side with this router
             ]
          }
       ]
    }

For the available ``options`` with *Routers*, please see

-  :doc:`Native Worker Options <Native-Worker-Options>`
-  :doc:`Process Environments <Process-Environments>` 

For configuration of ``realms``, ``transports`` and ``components``, have
a look here

-  :doc:`Router Realms <Router-Realms>`
-  :doc:`Router Transports <Router-Transports>` 
-  :doc:`Router Components <Router-Components>` 

Configuration
-------------

+-----------------------+---------------------------------------------------------------------+
| parameter             | description                                                         |
+=======================+=====================================================================+
| **``id``**            | Optional router ID (default: ``"router<N>"``)                       |
+-----------------------+---------------------------------------------------------------------+
| **``type``**          | Must be ``"router"``.                                               |
+-----------------------+---------------------------------------------------------------------+
| **``options``**       | Please see :doc:`Native Worker Options <Native-Worker-Options>` .   |
+-----------------------+---------------------------------------------------------------------+
| **``realms``**        | Please see :doc:`Router Realms <Router-Realms>` .                   |
+-----------------------+---------------------------------------------------------------------+
| **``transports``**    | Please see :doc:`Router Transports <Router-Transports>` .           |
+-----------------------+---------------------------------------------------------------------+
| **``components``**    | A list of components. Please see below.                             |
+-----------------------+---------------------------------------------------------------------+
| **``connections``**   | Not yet implemented.                                                |
+-----------------------+---------------------------------------------------------------------+

Router components are either **plain Python classes**:

+----------------------+--------------------------------------------------------------+
| parameter            | description                                                  |
+======================+==============================================================+
| **``id``**           | Optional component ID (default: ``"component<N>"``)          |
+----------------------+--------------------------------------------------------------+
| **``type``**         | Must be ``"class"``.                                         |
+----------------------+--------------------------------------------------------------+
| **``realm``**        | The realm to join with the component.                        |
+----------------------+--------------------------------------------------------------+
| **``role``**         | The authrole under which to attach the component.            |
+----------------------+--------------------------------------------------------------+
| **``references``**   | Please see below.                                            |
+----------------------+--------------------------------------------------------------+
| **``classname``**    | The fully qualified Python classname to use.                 |
+----------------------+--------------------------------------------------------------+
| **``extra``**        | Arbitrary custom data forwarded to the class ctonstructor.   |
+----------------------+--------------------------------------------------------------+