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scala-xmpp is a an xmpp framework in scala. it provides core xmpp stanza encoding/decoding and a framework for building servers, external components and clients.

scala-xmpp is similar to ejabbered's exmpp and openfire's tinder/whack libraries but is a native scala implementation. As such it is optimized for high concurrency utilizing scala's actors and java nio sockets via netty and naggati. Stanza manipulation is based on pattern matching instead of xml literals.

a simple external component

class Echo extends XmppComponent
    override val identities = List(disco.Identity("component", "c2s", "echo server"))
    override val extensionsBuilders = Nil

    override def onMessage(message:Message)
        send(Chat(message.from,, message.subject, message.body))

a simple server

class MyServer extends XmppServer
    val config = new DefaultXmppServerConfig()

    def startup()
        super.startup("localhost", "", keystore, keystorePassword)

    protected def onClientConnected(client:ClientConnection)
        debug("xmpp client %s is connected".format(

        client.delegate = Some(new ClientConnectionDelegate
            override def authenticate(request:AuthenticationRequest) =
                debug("xmpp client %s requesting authentication".format(

            override def register(request:RegistrationRequest) =
                debug("xmpp client %s requesting registration".format(

            override def onStanza(stanza:Stanza)
                debug("xmpp client %s received '%s'".format(, stanza))

            override def onOnline(jid:JID)
                debug("xmpp client %s is online".format(

            override def onOffline()
                debug("xmpp client %s is offline".format(

            override def onError(e:Throwable)
                error("xmpp client %s reported an error".format(, e)

    protected def onClientDisconnected(client:ClientConnection)
        debug("xmpp client %s is disconnected".format(

open issue

  • client implementation
  • unit tests
  • implement more common extensions


scala-xmpp, a scala based xmpp framework Copyright (C) 2010 mishlabs

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

This project is work in progress. if you are interested in contributing, have comments or want to share how you are using it please touch base via github


A scala based xmpp framework



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