Difference between revisions of "XMPP Programmer's Guide"
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== Introduction == | == Introduction == | ||
Welcome to | Welcome to XMPP Programmer's Guide. This wiki will help you to develop software for [http://xmpp.org/ XMPP] technologies. | ||
=== Mini-FAQ: Before we start there are some questions to clarify: === | === Mini-FAQ: Before we start there are some questions to clarify: === | ||
* '''What is | * '''What is XMPP?''' | ||
: The architecture of the XMPP network is similar to email while a XMPP server conforms an email server ('''server.com''') and XMPP clients conforms email clients ('''user@server.com'''). The difference is that everything happens (by definition: nearly) in realtime over a persistent XML-TCP stream. In example this makes it possible that other (authorized) users can see your online presence. In addition to that servers can offer specialised services, in example a user directory ('''users.server.com''') or a weather agent ('''weather.server.com'''). XMPP is the architecture/protocol the network is based on. | : The architecture of the XMPP network is similar to email while a XMPP server conforms an email server ('''server.com''') and XMPP clients conforms email clients ('''user@server.com'''). The difference is that everything happens (by definition: nearly) in realtime over a persistent XML-TCP stream. In example this makes it possible that other (authorized) users can see your online presence. In addition to that servers can offer specialised services, in example a user directory ('''users.server.com''') or a weather agent ('''weather.server.com'''). XMPP is the architecture/protocol the network is based on. | ||
* '''Is | * '''Is XMPP the right protocol/thing for me?''' | ||
: Do you want to exchange information over a distributed network with many clients instantly? Do you want something like email in realtime? Then it will be a good choice. | : Do you want to exchange information over a distributed network with many clients instantly? Do you want something like email in realtime? Then it will be a good choice. | ||
* '''What is the difference between Jabber and XMPP?''' | * '''What is the difference between Jabber and XMPP?''' | ||
: Since 2004 XMPP is the IETF-approved instant messaging and presence protocol. | : Since 2004, XMPP is the IETF-approved instant messaging and presence protocol. Jabber is the old name of XMPP that evolves since 1998. | ||
* '''Is it commercial or opensource?''' | * '''Is it commercial or opensource?''' | ||
: The | : The XMPP protocols are free, open, public, and easily understandable. | ||
* '''What is a XEP?''' | * '''What is a XEP?''' | ||
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* '''Do you have some tips and tricks for me?''' | * '''Do you have some tips and tricks for me?''' | ||
: Yes, sure, goto [[ | : Yes, sure, goto [[XMPP Programmer's Tips and Tricks]]. | ||
== Existing | == Existing XMPP code libraries == | ||
In many cases it will be sufficient to use one of the existing code libraries. Following this [http://xmpp.org/software/libraries.shtml link] you can find a list of available libraries for many platforms and programing languages. For programming beginners it is the best choice to use an existing XMPP code library. | In many cases it will be sufficient to use one of the existing code libraries. Following this [http://xmpp.org/software/libraries.shtml link] you can find a list of available libraries for many platforms and programing languages. For programming beginners it is the best choice to use an existing XMPP code library. | ||
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# Knowledge about [http://en.wikipedia.org/wiki/XML XML] and character encodings like [http://en.wikipedia.org/wiki/UTF-8 UTF-8]. | # Knowledge about [http://en.wikipedia.org/wiki/XML XML] and character encodings like [http://en.wikipedia.org/wiki/UTF-8 UTF-8]. | ||
# Knowledge about DOM and SAX. | # Knowledge about DOM and SAX. | ||
# Read the [[ | # Read the [[XMPP Programmer's Tips and Tricks]]. | ||
== How to start ... == | == How to start ... == | ||
First you must decide what you want to program. Basically you can program either a XMPP client, a XMPP server or a XMPP server component: | First you must decide what you want to program. Basically you can program either a XMPP client, a XMPP server or a XMPP server component: | ||
* [[Programming | * [[Programming XMPP Clients]] | ||
: Choose this if you want to create a client program. This program can be a normal chat program but is not limited to it. | : Choose this if you want to create a client program. This program can be a normal chat program but is not limited to it. | ||
* [[Programming | * [[Programming XMPP Server Components]] | ||
: In case you want to develop a new service for XMPP go here. There are several ways to accomplish this. | : In case you want to develop a new service for XMPP go here. There are several ways to accomplish this. | ||
* [[Programming/Extending | * [[Programming/Extending XMPP Servers]] | ||
: It is unlikely that you want to write a complete new server. It is more likely that you want to extend an extisting open source server project. Anyway here are some hints on how to start with this. | : It is unlikely that you want to write a complete new server. It is more likely that you want to extend an extisting open source server project. Anyway here are some hints on how to start with this. | ||