core.stanza_router

The stanza router handles basic routing of stanzas to the correct host and fires events that are then handled by modules. It also handles sending error replies for unhandled stanzas.

Description

When Prosody receives a stanza from a connected client or remote server, called an “origin”, it enters the routing process via prosody.core_process_stanza(), where some authorization and sanity checks are performed. If the origin session is not authorized to send stanzas yet, i.e. becasue it has not authenticated or bound a resouce, it is rejected here.

Processing then passes to prosody.core_post_stanza(), where events are fired to dispatch the stanza to handling by interested modules. If modules generate a reply of some sort, that often gets sent directly to the origin session, bypassing most routing logic.

Stanzas created by Prosody itself, i.e. in modules, enter routing trough prosody.core_post_stanza(). Modules should use the module:send() API which in turn calls core_post_stanza behind the scenes.

API

TL;DR:

-- Stanza received from e.g. a connected client
prosody.core_process_stanza(origin, stanza);

-- Fire events for stanza received from a client
prosody.core_post_stanza(origin, stanza, true);

-- Send a stanza out from Prosody
prosody.core_post_stanza(origin, stanza, false);

-- Similar to the above
prosody.core_route_stanza(origin, stanza);