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Library to handle all the core functionality for:

build status Coverage Status js-standard-style


Note: We now only support Node.js versions 0.8.0 and greater.

With package manager npm:

npm install node-xmpp-core


Install the dev dependencies, then...

npm test

Also see the tests run in travis. The tests in travis run both the code and code style tests.

How to use

Please use one of node-xmpp-client/component/server

Objectives of node-xmpp-core:

  • Use node.js conventions, especially EventEmitter, ie. for write buffer control
  • Fast parsing, node-expat was written for this library



Set this option as true to enable the optimization for continuous TCP streams. If your "socket" actually transports frames (WebSockets) and you can't have stanzas split across those, do not enable it.

type: boolean default: false


  • Simple JID parsing with Stringprep normalization
    • Optional now, you won't need ICU for just node-xmpp
    • Please be aware if you identify users by JIDs
    • npm install node-stringprep
  • Uses ltx
    • Much easier to handle than a standard DOM
    • xmlns-aware
    • Easy XML builder like Strophe.js (see down)
    • Non-buffering serialization
    • Was split out of node-xmpp for modularization and resuability



Automatically building the optional library can be turned off by npm config set optional false or by setting the environmental variable export NPM_CONFIG_OPTIONAL=false. On Heroku this is done through heroku config:set NPM_CONFIG_OPTIONAL=false, for example.

Building XML Elements

Strophe.js' XML Builder is very convenient for producing XMPP stanzas. ltx includes it in a much more primitive way: the c(), cnode() and t() methods can be called on any Element object, returning the new child element.

This can be confusing: in the end, you will hold the last-added child until you use up(), a getter for the parent. Connection.send() first invokes tree() to retrieve the uppermost parent, the XMPP stanza, before sending it out the wire.


(Builing up documentation slowly)

JID Manipulation

...coming soon...