ejabberd is the de facto XMPP server in the world. The fact that it is used to power the largest deployments in the world should not intimidate you. ejabberd is. This web site is dedicated to help you use and develop for ejabberd XMPP ejabberd has been in development since and is used all over the world to. Clustering relies on Erlang features and Mnesia shared schemas. Before getting started, it is best to get familiar with the Erlang environment as this guide will.

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Welcome to ejabberd, your superpowerful messaging framework | ejabberd Docs

The same is true for header files: The ejabberd core is not well-defined. This is the only optional callback, thus, if undefined, the module will be reloaded by calling sequentially Module: Several callbacks should be defined in the module: To remove all watchdog admins, set the option with an empty list:. The exact format is: The drawback is that the created process’ message queue can be overloaded if it doesn’t process incoming IQs fast enough, which, in the worst case may crash emulator due to OOM out-of-memory.


If deployed on a 16 GB RAM machine with at least 4 cores, a single ejabberd node can typically handle K online users. Functions with lower sequence number are executed before those with bigger sequence number.

Special extension are also available from ProcessOne to handle geodistribution in an even more robust way. Register an account in ejabber domain with the given password.

This guide is a brief explanation of ejabberd internals. For example, an xmlel packet.

Ejabberd Developers Guide

The name of an Erlang node includes the hostname of the computer. Get information about the Mnesia database. This bot can execute all commands: In each frontend the AccessCommands option is defined in a different place.

It is intended to initialize a module.

Step-by-step Databases Configuration Guides

The correct code will look something like that: These options can be used to migrate accounts using jabberd1. It’s pretty small and straightforward module whose the only task is to find the “route” for a stanza.

Cluster should be set up in a single data center: But in all cases the option syntax is the same:. The value of Why can be used to ejqbberd the failure reason into human readable description using xmpp: Stateful modules While some modules don’t need to maintain an internal state “stateless” modulesothers are required to do this “stateful” modules.


Troubleshooting ejabberd | ejabberd Docs

The exact format is:. The typical coding style rules found violated in contributors’ code are: Moreover, the described ejabbers layers are pure abstraction grouping several modules together by some criteria for better understanding of ejabberd internal processing rules.

Use dialyzer checks of your code for validation. A hook is represented by a unique name. N parallel processes are created for the handler and all matching IQs are relayed to one of these processes. Number of outgoing s2s connections on the node register user host password: Instead of specifying a list of allowed commands, commands option can have the all value to allow all commands. For storing persistent data, ejabberd uses Mnesia the distributed internal Erlang databasebut you can opt for other storage: This option can be used to delete old messages in offline storage.