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{{Jetty FAQ Section}}
 
{{Jetty FAQ Section}}
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== Trouble shooting ==
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See [[Jetty/Troubleshooting|Jetty Trouble Shooting FAQ]].
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== General ==
 
== General ==
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* there is a jetty in the Mort Bay logo.
 
* there is a jetty in the Mort Bay logo.
 
* there were no better suggestions.
 
* there were no better suggestions.
}}
 
 
 
{{Jetty FAQ
 
| question = What is Jetty?
 
| answer = Jetty is a open source project providing several HTTP based technologies.  The project includes a
 
* Asynchronous HTTP Server
 
* Asynchronous HTTP Client
 
* Servlet Container
 
* Many utilities useful for creating and debugging web applications
 
}}
 
 
{{Jetty FAQ
 
| question = Is Jetty production ready?
 
| answer = Yes.  Since 1995, [http://docs.codehaus.org/display/JETTY/Jetty+Powered Jetty powers] hundreds of thousands of websites, serving millions of users and is embedded in thousands of products and projects.
 
 
}}
 
}}
  
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* Devices, such as [http://code.google.com/p/i-jetty/ phones]
 
* Devices, such as [http://code.google.com/p/i-jetty/ phones]
 
See the [http://docs.codehaus.org/display/JETTY/Jetty+Powered Jetty Powered] page for more exemplar users.
 
See the [http://docs.codehaus.org/display/JETTY/Jetty+Powered Jetty Powered] page for more exemplar users.
 
 
}}
 
}}
  
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{{Jetty FAQ
 
{{Jetty FAQ
 
| question = What's the difference between Jetty from Mort Bay, Codehaus and/or Eclipse?  
 
| question = What's the difference between Jetty from Mort Bay, Codehaus and/or Eclipse?  
| answer = The latest releases of core jetty-7 and later are available from [http://www.eclipse.org/jetty/ Eclipse], which use the org.eclipse.jetty packaging. For versions 6 of Jetty, plus some jetty-7 components such as RPMs, Debs, Hightide, use [http://jetty.codehaus.org/ codehaus], which uses the org.mortbay packaging. For more information on this topic see [http://www.eclipse.org/about/jetty About Jetty].
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| answer = The latest releases of core jetty-7 and later are available from [http://www.eclipse.org/jetty/ Eclipse], which use the org.eclipse.jetty packaging. For versions 6 of Jetty, plus some jetty-7 components such as RPMs, Debs, Hightide, use [http://jetty.codehaus.org/ codehaus], which uses the org.mortbay packaging. For more information on this topic see [http://www.eclipse.org/jetty/about.php].
 
}}
 
}}
  
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| answer = No, while Jetty 7 has very much the same architecture as Jetty 6, there are packaging changes and other minor tweaks between the versions. Also, the Jetty 7 milestones are not as fully featured as Jetty 6 in terms of third party integrations being available by default with the distribution bundle. Please see the [[Jetty/Starting#Upgrades|Upgrades section of our Getting Started documentation]].
 
| answer = No, while Jetty 7 has very much the same architecture as Jetty 6, there are packaging changes and other minor tweaks between the versions. Also, the Jetty 7 milestones are not as fully featured as Jetty 6 in terms of third party integrations being available by default with the distribution bundle. Please see the [[Jetty/Starting#Upgrades|Upgrades section of our Getting Started documentation]].
 
}}
 
}}
 
 
== Developing with Jetty ==
 
  
 
{{Jetty FAQ
 
{{Jetty FAQ
| question = How do I get started?
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| question = Can I use [http://www.springsource.org/about spring] to configure Jetty?
| answer =  See the guides under the [[Jetty/Starting|Getting Started]] section.
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| answer = Yes.  Jetty can be assembled with any IoC style framework including our own XmlConfiguration and [http://www.springsource.org/about spring]. It is the same as embedding jetty, a server is instantiated, injected with configuration and started. See the [[Jetty/Tutorial/Embedding_Jetty#File_Server_with_spring|Spring File Server]] example or the [[Jetty/Howto/Spring|Jetty Spring HOWTO]].
 
}}
 
}}
  
{{Jetty FAQ
 
| question = Are Maven 2 artifacts available?
 
| answer =  Yes, Jetty is developed with Maven, and artifacts are available at http://repo2.maven.org/maven2/org/eclipse/jetty.
 
}}
 
 
{{Jetty FAQ
 
| question = What JARs do I need to run Jetty?
 
| answer =  The core of Jetty has no external dependencies other than the servlet-api. See the [[Jetty/Reference/Dependencies|Jetty Dependencies]] reference.
 
}}
 
 
{{Jetty FAQ
 
| question = How do I embed Jetty?
 
| answer =  Embedding jetty is a simple writing a java main method that does <code>new Server(80).start()</code>. Jetty is just a POJO that can be instantiated, configured and then started. See the [[Jetty/Tutorial/Embedding_Jetty|Embedding Jetty]] tutorial.
 
}}
 
 
{{Jetty FAQ
 
| question = Can I use [http://www.springsource.org/about spring] to configure Jetty?
 
| answer =  Yes.  Jetty can be assembled with any IoC style framework including our own XmlConfiguration and [http://www.springsource.org/about spring]. It is the same as embedding jetty, a server is instantiated, injected with configuration and started.  See the [[/Jetty/Tutorial/Embedding_Jetty#File_Server_with_spring|Spring File Server]] example and the [[/Jetty/Tutorial/Embedding_Jetty#File_Server_with_XML|Jetty XML File Server]] example.
 
}}
 
  
 
== Others ==
 
== Others ==
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* [https://addons.mozilla.org/en-US/firefox/addon/966 Tamper Data plugin for Firefox] - shows you the HTTP dialog and allows you to modify
 
* [https://addons.mozilla.org/en-US/firefox/addon/966 Tamper Data plugin for Firefox] - shows you the HTTP dialog and allows you to modify
 
* [http://www.wireshark.org Wireshark] - network protocol analyzer.
 
* [http://www.wireshark.org Wireshark] - network protocol analyzer.
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}}
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{{Jetty FAQ
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| question = Does Jetty support [http://dev.w3.org/html5/websockets/ WebSocket]?
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| answer =  Yes.  Jetty has a WebSocket Server implementation.  See [http://blogs.webtide.com/gregw/entry/jetty_websocket_server this blog] for an introduction.
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}}
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== Jetty and Your Service Provider ==
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{{Jetty FAQ
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| question = Why has my web service (for example, email) crashed six times in the last two months? The error page says "powered by Jetty," so it must be your fault.
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| answer = Jetty is the web infrastructure your service provider uses. The fact that you can see "powered by Jetty" indicates that Jetty is still working fine. It is the email application running on top of Jetty that has failed for some reason. You need to contact your service provider.
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To learn more about Jetty and the web application services it provides, see [http://www.eclipse.org/jetty/ About Jetty].
 
}}
 
}}

Latest revision as of 17:08, 6 September 2011



Trouble shooting

See Jetty Trouble Shooting FAQ.


General

Question Mark.png Why is it called Jetty?

Jetty was originally developed by Greg Wilkins of Mort Bay Consulting in 1995!

Mort Bay is at the heart of Balmain, Sydney NSW, Australia. A former working class suburb, now yuppieville in Sydney's close inner-west. Greg was living by Mort Bay when the company was formed, hence the company name.

Jetty was originally called IssueTracker (its original application) and then MBServler (Mort Bay SERVLet servER). Neither of these were much liked, so Jetty was finally picked as:

  • it starts with a J
  • the double tt in jetty:// looks a little like http://
  • there is a jetty in the Mort Bay logo.
  • there were no better suggestions.


Question Mark.png Who uses Jetty?

Jetty has a huge variety of users: See the Jetty Powered page for more exemplar users.


Question Mark.png Why use Jetty?

Some of the reasons to use Jetty over other available options are:
  • Jetty is Open source with a commercially usable license.
  • Jetty has a small foot print, yet is full featured and standards based.
  • Jetty is flexible and extensible, so that if your application/deployment is not a standard webapp, Jetty can easily be customized.
  • Jetty provides asynchronous HTTP handling within the safe standard servlet API model, without the need to program at the asynchronous IO level.
  • Jetty has an innovative, responsive and approachable developer community.
See also a Comparative Analysis with Tomcat.


Question Mark.png What's the difference between Jetty from Mort Bay, Codehaus and/or Eclipse?

The latest releases of core jetty-7 and later are available from Eclipse, which use the org.eclipse.jetty packaging. For versions 6 of Jetty, plus some jetty-7 components such as RPMs, Debs, Hightide, use codehaus, which uses the org.mortbay packaging. For more information on this topic see [1].



Question Mark.png How do I ask a question?

You can get some help from the Jetty community by posting a question to #jetty on irc.freenode.org or to the jetty-users@eclipse.org mailing list. When posting, please be sure to have available as a minimum the following information:
  1. Jetty version
  2. Browser version
  3. OS platform
  4. JVM version
  5. Command line
  6. Full stack trace of any exceptions

If your problem involves a complex webapp, please try and provide us with just a small webapp instead that also demonstrates the problem.

Debug logs, packet traces from tools such as ethereal or copies of the HTTP dialog as captured by tools such as Firefox "Live HTTP Headers" are always useful.


Question Mark.png How do I know which version of Jetty I am running?

Locate the start.jar in your distribution. Then use the "--version" flag: java -jar start.jar -- version


Question Mark.png Is commercial support available?

Yes. See Webtide.


Question Mark.png Is Jetty 7 a drop in replacement for Jetty 6?

No, while Jetty 7 has very much the same architecture as Jetty 6, there are packaging changes and other minor tweaks between the versions. Also, the Jetty 7 milestones are not as fully featured as Jetty 6 in terms of third party integrations being available by default with the distribution bundle. Please see the Upgrades section of our Getting Started documentation.


Question Mark.png Can I use spring to configure Jetty?

Yes. Jetty can be assembled with any IoC style framework including our own XmlConfiguration and spring. It is the same as embedding jetty, a server is instantiated, injected with configuration and started. See the Spring File Server example or the Jetty Spring HOWTO.


Others

Question Mark.png Can you recommend some useful web developer tools?

Yes!

These tools have nothing to do specifically with Jetty; they're just a list of tools we find useful in developing and diagnosing misbehaving webapps:

Browsers and GUI Tools

Http Protocol Analysis



Question Mark.png Does Jetty support WebSocket?

Yes. Jetty has a WebSocket Server implementation. See this blog for an introduction.


Jetty and Your Service Provider

Question Mark.png Why has my web service (for example, email) crashed six times in the last two months? The error page says "powered by Jetty," so it must be your fault.

Jetty is the web infrastructure your service provider uses. The fact that you can see "powered by Jetty" indicates that Jetty is still working fine. It is the email application running on top of Jetty that has failed for some reason. You need to contact your service provider.


To learn more about Jetty and the web application services it provides, see About Jetty.

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