Merge branch 'jetty-9.4.x' into jetty-10.0.x

This commit is contained in:
WalkerWatch 2018-01-26 08:45:29 -05:00
commit c68c5e1e75
5 changed files with 457 additions and 224 deletions

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@ -82,6 +82,215 @@ Below is an illustration of how the various Jetty configuration files (`ini`, `m
image:images/Jetty_Configuration_File_Relationships.png[image,width=693]
==== A Closer Look
To put it simply: XML files are responsible for instantiating the Jetty POJOs that make up the server.
They define properties which users can modify to meet the needs of their server.
These XML files are broken up by type in the distribution so they can be consumed as a user/server needs them.
For example, a server may need HTTP and HTTPS functionality, but opt out of using HTTP/2 and Websocket.
Module files allow users to enable and remove functionality quickly and easily from their server implementation.
They include a template of the different properties included in the associated XML file, as well as a pointer to the XML or JAR file(s) they are referencing.
When a module is activated these properties are added to a related `ini` file where users can configure them to meet their needs.
We will discuss modules in further detail in an upcoming chapter.
Ini files are where most users will spend the bulk of their time editing the configuration for their server.
As mentioned, they contain properties which were defined in their associated XML files which in turn reference Jetty Java objcts.
This can be a bit overwhelming at first, so let's look at an example - in this case the `http` module.
We will work backwards from an ini file to the associated module and then the XML file in question.
First up, the `http.ini` file.
If we take a look at it's contents, we will see the following:
[source, screen, subs="{sub-order}"]
----
$ cat start.d/http.ini
# ---------------------------------------
# Module: http
# Enables a HTTP connector on the server.
# By default HTTP/1 is support, but HTTP2C can
# be added to the connector with the http2c module.
# ---------------------------------------
--module=http
### HTTP Connector Configuration
## Connector host/address to bind to
# jetty.http.host=0.0.0.0
## Connector port to listen on
# jetty.http.port=8080
## Connector idle timeout in milliseconds
# jetty.http.idleTimeout=30000
## Connector socket linger time in seconds (-1 to disable)
# jetty.http.soLingerTime=-1
## Number of acceptors (-1 picks default based on number of cores)
# jetty.http.acceptors=-1
## Number of selectors (-1 picks default based on number of cores)
# jetty.http.selectors=-1
## ServerSocketChannel backlog (0 picks platform default)
# jetty.http.acceptorQueueSize=0
## Thread priority delta to give to acceptor threads
# jetty.http.acceptorPriorityDelta=0
## Reserve threads for high priority tasks (-1 use a heuristic, 0 no reserved threads)
# jetty.http.reservedThreads=-1
## Connect Timeout in milliseconds
# jetty.http.connectTimeout=15000
## HTTP Compliance: RFC7230, RFC2616, LEGACY
# jetty.http.compliance=RFC7230
----
So what do we see?
We have a module name, the module activation (`--module=http`), as well as a description and what look like properties to configure.
Those will some scripting/coding experience might notice that most of the lines are commented out with `#` and you'd be correct.
When a module is enabled and an `ini` file is created, all of the properties you see here were set to these defaults - the server is already using the values shown
If you wanted to change one of the properties though, say `jetty.http.port`, you'd simply uncomment the line and change the value.
For example:
[source, screen, subs="{sub-order}"]
----
$ cat start.d/http.ini
# ---------------------------------------
# Module: http
# Enables a HTTP connector on the server.
# By default HTTP/1 is support, but HTTP2C can
# be added to the connector with the http2c module.
# ---------------------------------------
--module=http
### HTTP Connector Configuration
## Connector host/address to bind to
# jetty.http.host=0.0.0.0
## Connector port to listen on
jetty.http.port=1234
...
----
As seen before, these properties were populated in this ini file based on a related module.
Standard Jetty modules live in the Home of the Jetty Distribution in the aptly named `modules` directory.
So let's take a quick look at the associated `$JETTY_HOME/modules/http.mod` file:
[source, screen, subs="{sub-order}"]
----
$ cat $JETTY_HOME/modules/http.mod
[description]
Enables a HTTP connector on the server.
By default HTTP/1 is support, but HTTP2C can
be added to the connector with the http2c module.
[tags]
connector
http
[depend]
server
[xml]
etc/jetty-http.xml
[ini-template]
### HTTP Connector Configuration
## Connector host/address to bind to
# jetty.http.host=0.0.0.0
## Connector port to listen on
# jetty.http.port=8080
## Connector idle timeout in milliseconds
# jetty.http.idleTimeout=30000
## Connector socket linger time in seconds (-1 to disable)
# jetty.http.soLingerTime=-1
...
----
At first blush, it looks remarkable similar to the `ini` file we just looked at.
We still have a description and the properties we could edit, but now we also have several other sections.
These other sections will be looked at further in our chapter on modules, but for now it is worth noting the `[xml]` and `[ini-template]` sections.
As you could probably have puzzled out, the `[ini-template]` contains a template (go figure) for properties to be placed in the associated `ini` file when a module is activated.
The `[xml]` section refers to the file and location of the XML file these properties are based on.
It is important to note that not every module file will have the same sections, but most should look structurally the same.
Now that we know what XML file these properties relate to, we can navigate to it and have a look.
[source, xml, subs="{sub-order}"]
----
$ cat $JETTY_HOME/etc/jetty-http.xml
<?xml version="1.0"?>
<!DOCTYPE Configure PUBLIC "-//Jetty//Configure//EN" "http://www.eclipse.org/jetty/configure_9_3.dtd">
<!-- ============================================================= -->
<!-- Configure the Jetty Server instance with an ID "Server" -->
<!-- by adding a HTTP connector. -->
<!-- This configuration must be used in conjunction with jetty.xml -->
<!-- ============================================================= -->
<Configure id="Server" class="org.eclipse.jetty.server.Server">
<!-- =========================================================== -->
<!-- Add a HTTP Connector. -->
<!-- Configure an o.e.j.server.ServerConnector with a single -->
<!-- HttpConnectionFactory instance using the common httpConfig -->
<!-- instance defined in jetty.xml -->
<!-- -->
<!-- Consult the javadoc of o.e.j.server.ServerConnector and -->
<!-- o.e.j.server.HttpConnectionFactory for all configuration -->
<!-- that may be set here. -->
<!-- =========================================================== -->
<Call name="addConnector">
<Arg>
<New id="httpConnector" class="org.eclipse.jetty.server.ServerConnector">
<Arg name="server"><Ref refid="Server" /></Arg>
<Arg name="acceptors" type="int"><Property name="jetty.http.acceptors" deprecated="http.acceptors" default="-1"/></Arg>
<Arg name="selectors" type="int"><Property name="jetty.http.selectors" deprecated="http.selectors" default="-1"/></Arg>
<Arg name="factories">
<Array type="org.eclipse.jetty.server.ConnectionFactory">
<Item>
<New class="org.eclipse.jetty.server.HttpConnectionFactory">
<Arg name="config"><Ref refid="httpConfig" /></Arg>
<Arg name="compliance"><Call class="org.eclipse.jetty.http.HttpCompliance" name="valueOf"><Arg><Property name="jetty.http.compliance" default="RFC7230"/></Arg></Call></Arg>
</New>
</Item>
</Array>
</Arg>
<Set name="host"><Property name="jetty.http.host" deprecated="jetty.host" /></Set>
<Set name="port"><Property name="jetty.http.port" deprecated="jetty.port" default="8080" /></Set>
<Set name="idleTimeout"><Property name="jetty.http.idleTimeout" deprecated="http.timeout" default="30000"/></Set>
<Set name="soLingerTime"><Property name="jetty.http.soLingerTime" deprecated="http.soLingerTime" default="-1"/></Set>
<Set name="acceptorPriorityDelta"><Property name="jetty.http.acceptorPriorityDelta" deprecated="http.acceptorPriorityDelta" default="0"/></Set>
<Set name="acceptQueueSize"><Property name="jetty.http.acceptQueueSize" deprecated="http.acceptQueueSize" default="0"/></Set>
<Get name="SelectorManager">
<Set name="connectTimeout"><Property name="jetty.http.connectTimeout" default="15000"/></Set>
<Set name="reservedThreads"><Property name="jetty.http.reservedThreads" default="-2"/></Set>
</Get>
</New>
</Arg>
</Call>
</Configure>
----
Now we can see where those properties in our `ini` and module files came from.
In Jetty XML files, Jetty objects come to life; defined properties are set which link back to the jar libraries and run the server to a user's specification.
____
[IMPORTANT]
It is important to remember that you should *not* modify the XML files in your `$JETTY_HOME`.
If you do for some reason feel you want to change the way an XML file operates, it is best to make a copy of it in your `$JETTY_BASE` in an `/etc` directory.
Jetty will always look first to the `$JETTY_BASE` for configuration.
____
==== Other Configuration Files
In addition to the configuration files described above, the configuration of the server can use the following file types:

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@ -22,4 +22,5 @@ This guide covers the latter, a standalone distribution suitable for deploying w
include::jetty-installing.adoc[]
include::jetty-running.adoc[]
include::jetty-common-configuration.adoc[]
include::jetty-deploying.adoc[]

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@ -0,0 +1,187 @@
// ========================================================================
// Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd.
// ========================================================================
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
[[quickstart-common-config]]
=== Common Jetty Configuration
[[creating-jetty-base]]
==== Creating a new Jetty Base
The `demo-base` directory described earlier is an example of the link:#startup-base-and-home[`jetty.base`] mechanism.
A Jetty base directory allows the configuration and web applications of a server instance to be stored separately from the Jetty distribution, so that upgrades can be done with minimal disruption.
Jetty's default configuration is based on two properties:
jetty.home::
The property that defines the location of the Jetty distribution, its libs, default modules and default XML files (typically start.jar, lib, etc).
jetty.base::
The property that defines the location of a specific implementation of a Jetty server, its configuration, logs and web applications (typically start.d/*.ini files, logs and webapps).
____
[IMPORTANT]
Your Jetty Home directory should be treated as a standard of truth and remain unmodified or changed.
Changes or additions to your configuration should take place in the Jetty Base directory.
____
The `jetty.home` and `jetty.base` properties may be explicitly set on the command line, or they can be inferred from the environment if used with commands like:
[source, screen, subs="{sub-order}"]
----
> cd $JETTY_BASE
> java -jar $JETTY_HOME/start.jar
----
The following commands create a new base directory, enables both the HTTP connector and the web application deployer modules, and copies a demo webapp to be deployed:
[source, screen, subs="{sub-order}"]
----
> JETTY_BASE=/tmp/mybase
> mkdir $JETTY_BASE
> cd $JETTY_BASE
> java -jar $JETTY_HOME/start.jar
WARNING: Nothing to start, exiting ...
Usage: java -jar start.jar [options] [properties] [configs]
java -jar start.jar --help # for more information
> java -jar $JETTY_HOME/start.jar --create-startd
INFO : Base directory was modified
> java -jar $JETTY_HOME/start.jar --add-to-start=http,deploy
INFO: server initialised (transitively) in ${jetty.base}/start.d/server.ini
INFO: http initialised in ${jetty.base}/start.d/http.ini
INFO: security initialised (transitively) in ${jetty.base}/start.d/security.ini
INFO: servlet initialised (transitively) in ${jetty.base}/start.d/servlet.ini
INFO: webapp initialised (transitively) in ${jetty.base}/start.d/webapp.ini
INFO: deploy initialised in ${jetty.base}/start.d/deploy.ini
MKDIR: ${jetty.base}/webapps
INFO: Base directory was modified
> cp $JETTY_HOME/demo-base/webapps/async-rest.war webapps/ROOT.war
> java -jar $JETTY_HOME/start.jar
2015-06-04 11:10:16.286:INFO::main: Logging initialized @274ms
2015-06-04 11:10:16.440:INFO:oejs.Server:main: jetty-9.3.0.v20150601
2015-06-04 11:10:16.460:INFO:oejdp.ScanningAppProvider:main: Deployment monitor [file:///tmp/mybase/webapps/] at interval 1
2015-06-04 11:10:16.581:WARN::main: async-rest webapp is deployed. DO NOT USE IN PRODUCTION!
2015-06-04 11:10:16.589:INFO:oejw.StandardDescriptorProcessor:main: NO JSP Support for /, did not find org.eclipse.jetty.jsp.JettyJspServlet
2015-06-04 11:10:16.628:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@1a407d53{/,[file:///tmp/jetty-0.0.0.0-8080-ROOT.war-_-any-4510228025526425427.dir/webapp/, jar:file:///tmp/jetty-0.0.0.0-8080-ROOT.war-_-any-4510228025526425427.dir/webapp/WEB-INF/lib/example-async-rest-jar-{VERSION}.jar!/META-INF/resources],AVAILABLE}{/ROOT.war}
2015-06-04 11:10:16.645:INFO:oejs.ServerConnector:main: Started ServerConnector@3abbfa04{HTTP/1.1,[http/1.1]}{0.0.0.0:8080}
2015-06-04 11:10:16.646:INFO:oejs.Server:main: Started @634ms
----
[[quickstart-changing-jetty-port]]
==== Changing the Jetty Port
You can configure Jetty to run on a different port by setting the `jetty.http.port` property on the command line:
[source, screen, subs="{sub-order}"]
----
> cd $JETTY_BASE
> java -jar $JETTY_HOME/start.jar jetty.http.port=8081
...
----
When the server starts, it will now run on port `8081`.
It is important to note that setting properties on the command line will only take affect for that instance of the server.
To change the configuration so that the server will always start on the desired port, you will need to edit the `start.d/http.ini`
____
[NOTE]
--
The configuration by properties works via the following chain:
* The `start.d/http.ini` file is part of the effective command line and contains the `--module=http` argument which activates the http module.
* The `modules/http.mod` file defines the http module which specifies the `etc/jetty-http.xml` configuration file and the template ini properties it uses.
* The `jetty.http.port` property is used by the Property XML element in `etc/jetty.http.xml` to inject the `ServerConnector` instance with the port.
For more information see the link:#quick-start-configure[Quickstart Configuration Guide] and link:#configuring-connectors[Configuring Connectors].
--
____
[[quickstart-starting-https]]
==== Adding SSL for HTTPS & HTTP2
Building on the example above, we can activate additional modules to add support HTTPS and HTTP2 for the server.
To add HTTPS and HTTP2 connectors to a Jetty configuration, the modules can be activated by the following command:
[source, screen, subs="{sub-order}"]
----
> java -jar $JETTY_HOME/start.jar --add-to-start=https,http2
ALERT: There are enabled module(s) with licenses.
The following 1 module(s):
+ contains software not provided by the Eclipse Foundation!
+ contains software not covered by the Eclipse Public License!
+ has not been audited for compliance with its license
Module: alpn-impl/alpn-8
+ ALPN is a hosted at github under the GPL v2 with ClassPath Exception.
+ ALPN replaces/modifies OpenJDK classes in the sun.security.ssl package.
+ http://github.com/jetty-project/jetty-alpn
+ http://openjdk.java.net/legal/gplv2+ce.html
Proceed (y/N)? y
INFO : alpn-impl/alpn-1.8.0_92 dynamic dependency of alpn-impl/alpn-8
INFO : alpn transitively enabled, ini template available with --add-to-start=alpn
INFO : alpn-impl/alpn-8 dynamic dependency of alpn
INFO : http2 initialized in ${jetty.base}/start.d/http2.ini
INFO : https initialized in ${jetty.base}/start.d/https.ini
INFO : ssl transitively enabled, ini template available with --add-to-start=ssl
MKDIR : ${jetty.base}/lib/alpn
DOWNLD: http://central.maven.org/maven2/org/mortbay/jetty/alpn/alpn-boot/8.1.8.v20160420/alpn-boot-8.1.8.v20160420.jar to ${jetty.base}/lib/alpn/alpn-boot-8.1.8.v20160420.jar
MKDIR : ${jetty.base}/etc
COPY : ${jetty.home}/modules/ssl/keystore to ${jetty.base}/etc/keystore
INFO : Base directory was modified
> java -jar $JETTY_HOME/start.jar
[...]
2017-05-22 12:48:23.271:INFO:oejs.AbstractConnector:main: Started ServerConnector@134d0064{SSL,[ssl, alpn, h2, http/1.1]}{0.0.0.0:8443}
[...]
----
The `--add-to-start` command sets up the effective command line in the ini files to run an ssl connection that supports the HTTPS and HTTP2 protocols as follows:
* transitively enabled the `ssl` module that configures an SSL connector (eg port, keystore etc.) by adding `etc/jetty-ssl.xml` and `etc/jetty-ssl-context.xml` to the effective command line.
* transitively enabled the `alpn` module that configures protocol negotiation on the SSL connector by adding `etc/jetty-alpn.xml` to the effective command line.
* creates `start.d/https.ini` that configures the HTTPS protocol on the SSL connector by adding `etc/jetty-https.xml` to the effective command line.
* creates `start.d/http2.ini` that configures the HTTP/2 protocol on the SSL connector by adding `etc/jetty-http2.xml` to the effective command line.
* checks for the existence of a `etc/keystore` file and if not present, downloads a demonstration keystore file.
[[quickstart-changing-https-port]]
===== Changing the Jetty HTTPS Port
You can configure the SSL connector to run on a different port by setting the `jetty.ssl.port` property on the command line:
[source, screen, subs="{sub-order}"]
----
> cd $JETTY_BASE
> java -jar $JETTY_HOME/start.jar jetty.ssl.port=8444
----
Alternatively, property values can be added to the effective command line built from the `start.ini` file or `start.d/*.ini` files, depending on your set up.
Please see the section on link:#start-vs-startd[Start.ini vs. Start.d] for more information.
==== More start.jar Options
The job of the `start.jar` is to interpret the command line, `start.ini` and `start.d` directory (and associated .ini files) to build a Java classpath and list of properties and configuration files to pass to the main class of the Jetty XML configuration mechanism.
The `start.jar` mechanism has many options which are documented in the xref:startup[] administration section and you can see them in summary by using the command:
[source, screen, subs="{sub-order}"]
----
> java -jar $JETTY_HOME/start.jar --help
----

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@ -28,16 +28,16 @@ ____
It is available in both zip and gzip formats; download the one most appropriate for your system.
When you download and unpack the binary, it is extracted into a directory called `jetty-distribution-VERSION.`
Put this directory in a convenient location.
The rest of the instructions in this documentation refer to this location as either `JETTY_HOME` or as `$(jetty.home).`
The rest of the instructions in this documentation refer to this location as either `$JETTY_HOME` or as `$(jetty.home).`
_____
[IMPORTANT]
It is important that only stable releases are used in production environments.
Versions that have been deprecated or are released as Milestones (M) or Release Candidates (RC) are not suitable for production as they may contain security flaws or incomplete/non-functioning feature sets.
It is important that *only* stable releases are used in production environments.
Versions that have been deprecated or are released as Milestones (M) or Release Candidates (RC) are *not* suitable for production as they may contain security flaws or incomplete/non-functioning feature sets.
_____
[[distribution-content]]
==== Distribution Content
===== Distribution Content
A summary of the distribution's contents follows.
The top-level directory contains:
@ -79,7 +79,7 @@ When you download and unpack the binary, it is extracted into a directory called
Put this directory in a convenient location.
[[jetty-home-distribution-content]]
==== Distribution Content
===== Distribution Content
A summary of the Jetty-Home's distribution contents follows.
The top-level directory contains:

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@ -17,24 +17,26 @@
[[quickstart-running-jetty]]
=== Running Jetty
Once you have a copy of the Jetty distribution downloaded, extract the `zip` or `tar.gz` file to a location where you have read and write access.
Jetty has no GUI (Graphical User Interface), so running the server and performing many configuration options is done from the command line.
Once you have access to your system's command line, navigate to the directory where you unpacked your copy of the Jetty distribution.
To start Jetty on the default port of 8080, run the following command:
[source, screen, subs="{sub-order}"]
----
> cd $JETTY_HOME
> java -jar start.jar
2015-06-04 10:50:44.806:INFO::main: Logging initialized @334ms
2015-06-04 10:50:44.858:WARN:oejs.HomeBaseWarning:main: This instance of Jetty is not running from a separate {jetty.base} directory, this is not recommended. See documentation at http://www.eclipse.org/jetty/documentation/current/startup.html
2015-06-04 10:50:44.995:INFO:oejs.Server:main: jetty-{VERSION}
2015-06-04 10:50:45.012:INFO:oejdp.ScanningAppProvider:main: Deployment monitor [file:///opt/jetty-distribution-{VERSION}/webapps/] at interval 1
2015-06-04 10:50:45.030:INFO:oejs.ServerConnector:main: Started ServerConnector@19dfb72a{HTTP/1.1,[http/1.1]}{0.0.0.0:8080}
2015-06-04 10:50:45.030:INFO:oejs.Server:main: Started @558ms
$ java -jar start.jar
2017-09-20 15:45:11.986:INFO::main: Logging initialized @683ms to org.eclipse.jetty.util.log.StdErrLog
2017-09-20 15:45:12.197:WARN:oejs.HomeBaseWarning:main: This instance of Jetty is not running from a separate {jetty.base} directory, this is not recommended. See documentation at http://www.eclipse.org/jetty/documentation/current/startup.html
2017-09-20 15:45:12.243:INFO:oejs.Server:main: {VERSION}
2017-09-20 15:45:12.266:INFO:oejdp.ScanningAppProvider:main: Deployment monitor [file:///installs/repository/jetty/webapps/] at interval 1
2017-09-20 15:45:12.298:INFO:oejs.AbstractConnector:main: Started ServerConnector@39c0f4a{HTTP/1.1,[http/1.1]}{0.0.0.0:8080}
2017-09-20 15:45:12.298:INFO:oejs.Server:main: Started @995ms
----
You can point a browser at this server at link:http://localhost:8080[].
However, as there are no webapps deployed in the `$JETTY_HOME` directory, you will see a 404 error page served by Jetty.
*Note* the HomeBase warning - it is _not_ recommended to run Jetty from the `$JETTY_HOME` directory.
*Note* the `HomeBaseWarning` - it is *not* recommended to run Jetty from the `$JETTY_HOME` directory.
Instead, see how to link:#creating-jetty-base[create a Jetty Base] below.
____
@ -48,50 +50,51 @@ ____
[[demo-webapps-base]]
==== Demo Base
Within the standard Jetty distribution there is the `demo-base` directory, which demonstrates the recommended way to run a Jetty base in a directory separate from `$JETTY_HOME`:
Within the standard Jetty distribution there is the `demo-base` directory.
This is a fully-functioning Jetty Base (more on that later) complete with numerous web applications demonstrating different Jetty functionality.
Additionally, the `demo-base` demonstrates the recommended way to run a Jetty base in a directory separate from `$JETTY_HOME`:
[source, screen, subs="{sub-order}"]
----
> cd $JETTY_HOME/demo-base/
> java -jar $JETTY_HOME/start.jar
2017-08-16 16:55:15.571:INFO::main: Logging initialized @521ms to org.eclipse.jetty.util.log.StdErrLog
2017-08-16 16:55:15.907:WARN::main: demo test-realm is deployed. DO NOT USE IN PRODUCTION!
2017-08-16 16:55:15.910:INFO:oejs.Server:main: jetty-{VERSION}
2017-08-16 16:55:15.931:INFO:oejdp.ScanningAppProvider:main: Deployment monitor [file:///tmp/jetty-distribution-{VERSION}/demo-base/webapps/] at interval 1
2017-08-16 16:55:16.151:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=50ms
2017-08-16 16:55:16.369:INFO:oejs.session:main: DefaultSessionIdManager workerName=node0
2017-08-16 16:55:16.369:INFO:oejs.session:main: No SessionScavenger set, using defaults
2017-08-16 16:55:16.370:INFO:oejs.session:main: Scavenging every 660000ms
2017-08-16 16:55:16.416:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@7113b13f{/,file:///tmp/jetty-distribution-{VERSION}/demo-base/webapps/ROOT/,AVAILABLE}{/ROOT}
2017-08-16 16:55:16.625:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=82ms
2017-08-16 16:55:16.631:WARN::main: test webapp is deployed. DO NOT USE IN PRODUCTION!
2017-08-16 16:55:16.751:INFO:oejsh.ManagedAttributeListener:main: update PushFilter null->org.eclipse.jetty.servlets.PushCacheFilter@1a677343 on o.e.j.w.WebAppContext@2d7275fc{/test,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test.war-_test-any-7157753932050220016.dir/webapp/,STARTING}{/test.war}
2017-08-16 16:55:16.757:INFO:oejsh.ManagedAttributeListener:main: update QoSFilter null->org.eclipse.jetty.servlets.QoSFilter@79079097 on o.e.j.w.WebAppContext@2d7275fc{/test,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test.war-_test-any-7157753932050220016.dir/webapp/,STARTING}{/test.war}
2017-08-16 16:55:16.760:WARN:oeju.DeprecationWarning:main: Using @Deprecated Class org.eclipse.jetty.servlets.MultiPartFilter
2017-08-16 16:55:16.809:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@2d7275fc{/test,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test.war-_test-any-7157753932050220016.dir/webapp/,AVAILABLE}{/test.war}
2017-08-16 16:55:16.816:INFO:oejsh.ContextHandler:main: Started o.e.j.s.h.MovedContextHandler@7c9d8e2{/oldContextPath,null,AVAILABLE}
2017-08-16 16:55:16.854:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=23ms
2017-08-16 16:55:16.891:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@69453e37{/doc,file:///tmp/jetty-distribution-{VERSION}/demo-base/webapps/doc/,AVAILABLE}{/doc}
2017-08-16 16:55:16.942:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=25ms
2017-08-16 16:55:16.945:WARN::main: test-jaas webapp is deployed. DO NOT USE IN PRODUCTION!
2017-08-16 16:55:16.983:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@4e3958e7{/test-jaas,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test-jaas.war-_test-jaas-any-6953571893682159674.dir/webapp/,AVAILABLE}{/test-jaas.war}
2017-08-16 16:55:17.106:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=21ms
2017-08-16 16:55:17.109:WARN::main: test-jndi webapp is deployed. DO NOT USE IN PRODUCTION!
2017-08-16 16:55:17.192:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@1d8bd0de{/test-jndi,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test-jndi.war-_test-jndi-any-1246461885510956986.dir/webapp/,AVAILABLE}{/test-jndi.war}
2017-08-16 16:55:17.307:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=53ms
2017-08-16 16:55:17.310:WARN::main: test-spec webapp is deployed. DO NOT USE IN PRODUCTION!
2017-08-16 16:55:17.388:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@51dcb805{/test-spec,[file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test-spec.war-_test-spec-any-3750193079644252256.dir/webapp/, jar:file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test-spec.war-_test-spec-any-3750193079644252256.dir/webapp/WEB-INF/lib/test-web-fragment-{VERSION}.jar!/META-INF/resources],AVAILABLE}{/test-spec.war}
2017-08-16 16:55:17.490:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=53ms
2017-08-16 16:55:17.493:WARN::main: async-rest webapp is deployed. DO NOT USE IN PRODUCTION!
2017-08-16 16:55:17.516:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@1de76cc7{/async-rest,[file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-async-rest.war-_async-rest-any-8972552397332323832.dir/webapp/, jar:file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-async-rest.war-_async-rest-any-8972552397332323832.dir/webapp/WEB-INF/lib/example-async-rest-jar-{VERSION}.jar!/META-INF/resources],AVAILABLE}{/async-rest.war}
2017-08-16 16:55:17.643:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=83ms
2017-08-16 16:55:17.921:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@242b836{/proxy,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-javadoc-proxy.war-_javadoc-proxy-any-4521643038409884891.dir/webapp/,AVAILABLE}{/javadoc-proxy.war}
2017-08-16 16:55:17.936:INFO:oejs.AbstractConnector:main: Started ServerConnector@6f15d60e{HTTP/1.1,[http/1.1]}{0.0.0.0:8080}
2017-08-16 16:55:17.944:INFO:oejus.SslContextFactory:main: x509=X509@58e1d9d(jetty,h=[jetty.eclipse.org],w=[]) for SslContextFactory@446a1e84(file:///tmp/jetty-distribution-{VERSION}/demo-base/etc/keystore,file:///tmp/jetty-distribution-{VERSION}/demo-base/etc/keystore)
2017-08-16 16:55:17.944:INFO:oejus.SslContextFactory:main: x509=X509@4f0f2942(mykey,h=[],w=[]) for SslContextFactory@446a1e84(file:///tmp/jetty-distribution-{VERSION}/demo-base/etc/keystore,file:///tmp/jetty-distribution-{VERSION}/demo-base/etc/keystore)
2017-08-16 16:55:18.071:INFO:oejs.AbstractConnector:main: Started ServerConnector@41488b16{SSL,[ssl, http/1.1]}{0.0.0.0:8443}
2017-08-16 16:55:18.072:INFO:oejs.Server:main: Started @3022ms
$ cd demo-base/
$ java -jar ../start.jar
2017-09-20 16:23:03.563:INFO::main: Logging initialized @429ms to org.eclipse.jetty.util.log.StdErrLog
2017-09-20 16:23:03.802:WARN::main: demo test-realm is deployed. DO NOT USE IN PRODUCTION!
2017-09-20 16:23:03.804:INFO:oejs.Server:main: {VERSION}
2017-09-20 16:23:03.819:INFO:oejdp.ScanningAppProvider:main: Deployment monitor [file:///installs/repository/jetty/demo-base/webapps/] at interval 1
2017-09-20 16:23:04.098:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=102ms
2017-09-20 16:23:04.103:WARN::main: async-rest webapp is deployed. DO NOT USE IN PRODUCTION!
2017-09-20 16:23:04.267:INFO:oejs.session:main: DefaultSessionIdManager workerName=node0
2017-09-20 16:23:04.267:INFO:oejs.session:main: No SessionScavenger set, using defaults
2017-09-20 16:23:04.268:INFO:oejs.session:main: Scavenging every 660000ms
2017-09-20 16:23:04.306:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@371a67ec{/async-rest,[file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-async-rest.war-_async-rest-any-5319296087878801290.dir/webapp/, jar:file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-async-rest.war-_async-rest-any-5319296087878801290.dir/webapp/WEB-INF/lib/example-async-rest-jar-{VERSION}.jar!/META-INF/resources],AVAILABLE}{/async-rest.war}
2017-09-20 16:23:04.429:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=53ms
2017-09-20 16:23:04.432:WARN::main: test webapp is deployed. DO NOT USE IN PRODUCTION!
2017-09-20 16:23:04.511:INFO:oejsh.ManagedAttributeListener:main: update PushFilter null->org.eclipse.jetty.servlets.PushCacheFilter@2362f559 on o.e.j.w.WebAppContext@35e2d654{/test,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test.war-_test-any-6279588879522983394.dir/webapp/,STARTING}{/test.war}
2017-09-20 16:23:04.516:INFO:oejsh.ManagedAttributeListener:main: update QoSFilter null->org.eclipse.jetty.servlets.QoSFilter@7770f470 on o.e.j.w.WebAppContext@35e2d654{/test,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test.war-_test-any-6279588879522983394.dir/webapp/,STARTING}{/test.war}
2017-09-20 16:23:04.519:WARN:oeju.DeprecationWarning:main: Using @Deprecated Class org.eclipse.jetty.servlets.MultiPartFilter
2017-09-20 16:23:04.549:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@35e2d654{/test,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test.war-_test-any-6279588879522983394.dir/webapp/,AVAILABLE}{/test.war}
2017-09-20 16:23:04.646:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=12ms
2017-09-20 16:23:04.649:WARN::main: test-jndi webapp is deployed. DO NOT USE IN PRODUCTION!
2017-09-20 16:23:04.697:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@561b6512{/test-jndi,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test-jndi.war-_test-jndi-any-6023636263414992288.dir/webapp/,AVAILABLE}{/test-jndi.war}
2017-09-20 16:23:04.770:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=40ms
2017-09-20 16:23:05.036:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@2beee7ff{/proxy,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-javadoc-proxy.war-_javadoc-proxy-any-2758874759195597975.dir/webapp/,AVAILABLE}{/javadoc-proxy.war}
2017-09-20 16:23:05.072:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=16ms
2017-09-20 16:23:05.074:WARN::main: test-jaas webapp is deployed. DO NOT USE IN PRODUCTION!
2017-09-20 16:23:05.098:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@506ae4d4{/test-jaas,file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test-jaas.war-_test-jaas-any-8067423971450448377.dir/webapp/,AVAILABLE}{/test-jaas.war}
2017-09-20 16:23:05.182:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=37ms
2017-09-20 16:23:05.184:WARN::main: test-spec webapp is deployed. DO NOT USE IN PRODUCTION!
2017-09-20 16:23:05.243:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@45099dd3{/test-spec,[file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test-spec.war-_test-spec-any-1205866915335004234.dir/webapp/, jar:file:///private/var/folders/h6/yb_lbnnn11g0y1jjlvqg631h0000gn/T/jetty-0.0.0.0-8080-test-spec.war-_test-spec-any-1205866915335004234.dir/webapp/WEB-INF/lib/test-web-fragment-{VERSION}.jar!/META-INF/resources],AVAILABLE}{/test-spec.war}
2017-09-20 16:23:05.247:INFO:oejsh.ContextHandler:main: Started o.e.j.s.h.MovedContextHandler@3e08ff24{/oldContextPath,null,AVAILABLE}
2017-09-20 16:23:05.274:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=18ms
2017-09-20 16:23:05.296:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@5ddeb7cb{/,file:///installs/repository/jetty/demo-base/webapps/ROOT/,AVAILABLE}{/ROOT}
2017-09-20 16:23:05.326:INFO:oeja.AnnotationConfiguration:main: Scanning elapsed time=21ms
2017-09-20 16:23:05.352:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@6b695b06{/doc,file:///installs/repository/jetty/demo-base/webapps/doc/,AVAILABLE}{/doc}
2017-09-20 16:23:05.370:INFO:oejs.AbstractConnector:main: Started ServerConnector@28cda624{HTTP/1.1,[http/1.1]}{0.0.0.0:8080}
2017-09-20 16:23:05.380:INFO:oejus.SslContextFactory:main: x509=X509@126253fd(jetty,h=[jetty.eclipse.org],w=[]) for SslContextFactory@57db2b13(file:///installs/repository/jetty/demo-base/etc/keystore,file:///installs/repository/jetty/demo-base/etc/keystore)
2017-09-20 16:23:05.381:INFO:oejus.SslContextFactory:main: x509=X509@475c9c31(mykey,h=[],w=[]) for SslContextFactory@57db2b13(file:///installs/repository/jetty/demo-base/etc/keystore,ffile:///installs/repository/jetty/demo-base/etc/keystore)
2017-09-20 16:23:05.523:INFO:oejs.AbstractConnector:main: Started ServerConnector@53f3bdbd{SSL,[ssl, http/1.1]}{0.0.0.0:8443}
2017-09-20 16:23:05.524:INFO:oejs.Server:main: Started @2390ms
----
You can visit this demo server by pointing a browser at link:http://localhost:8080[], which will now show a welcome page and several demo/test web applications.
@ -101,7 +104,7 @@ ____
The demonstration web applications are not necessarily secure and should *not* be deployed in production web servers.
____
You can see the configuration of the demo-base by using the following commands:
You can see the configuration of the `demo-base` by using the following commands:
[source, screen, subs="{sub-order}"]
----
@ -118,170 +121,3 @@ It will also display the location of the modules, how and in what order they are
The `--list-config` command displays a trove of information about the server including the Java and Jetty environments, the configuration order, any JVM arguments or System Properties set, general server properties, a full listing of the Jetty server class path, and active Jetty XML files.
[[creating-jetty-base]]
==== Creating a new Jetty Base
The `demo-base` directory described above is an example of the link:#startup-base-and-home[`jetty.base`] mechanism.
A Jetty base directory allows the configuration and web applications of a server instance to be stored separately from the Jetty distribution, so that upgrades can be done with minimal disruption.
Jetty's default configuration is based on two properties:
jetty.home::
The property that defines the location of the Jetty distribution, its libs, default modules and default XML files (typically start.jar, lib, etc).
jetty.base::
The property that defines the location of a specific implementation of a Jetty server, its configuration, logs and web applications (typically start.d/*.ini files, logs and webapps).
____
[IMPORTANT]
Your Jetty Home directory should be treated as a standard of truth and remain unmodified or changed.
Changes or additions to your configuration should take place in the Jetty Base directory.
____
The `jetty.home` and `jetty.base` properties may be explicitly set on the command line, or they can be inferred from the environment if used with commands like:
[source, screen, subs="{sub-order}"]
----
> cd $JETTY_BASE
> java -jar $JETTY_HOME/start.jar
----
The following commands create a new base directory, enables both the HTTP connector and the web application deployer modules, and copies a demo webapp to be deployed:
[source, screen, subs="{sub-order}"]
----
> JETTY_BASE=/tmp/mybase
> mkdir $JETTY_BASE
> cd $JETTY_BASE
> java -jar $JETTY_HOME/start.jar
WARNING: Nothing to start, exiting ...
Usage: java -jar start.jar [options] [properties] [configs]
java -jar start.jar --help # for more information
> java -jar $JETTY_HOME/start.jar --create-startd
INFO : Base directory was modified
> java -jar $JETTY_HOME/start.jar --add-to-start=http,deploy
INFO: server initialised (transitively) in ${jetty.base}/start.d/server.ini
INFO: http initialised in ${jetty.base}/start.d/http.ini
INFO: security initialised (transitively) in ${jetty.base}/start.d/security.ini
INFO: servlet initialised (transitively) in ${jetty.base}/start.d/servlet.ini
INFO: webapp initialised (transitively) in ${jetty.base}/start.d/webapp.ini
INFO: deploy initialised in ${jetty.base}/start.d/deploy.ini
MKDIR: ${jetty.base}/webapps
INFO: Base directory was modified
> cp $JETTY_HOME/demo-base/webapps/async-rest.war webapps/ROOT.war
> java -jar $JETTY_HOME/start.jar
2015-06-04 11:10:16.286:INFO::main: Logging initialized @274ms
2015-06-04 11:10:16.440:INFO:oejs.Server:main: jetty-9.3.0.v20150601
2015-06-04 11:10:16.460:INFO:oejdp.ScanningAppProvider:main: Deployment monitor [file:///tmp/mybase/webapps/] at interval 1
2015-06-04 11:10:16.581:WARN::main: async-rest webapp is deployed. DO NOT USE IN PRODUCTION!
2015-06-04 11:10:16.589:INFO:oejw.StandardDescriptorProcessor:main: NO JSP Support for /, did not find org.eclipse.jetty.jsp.JettyJspServlet
2015-06-04 11:10:16.628:INFO:oejsh.ContextHandler:main: Started o.e.j.w.WebAppContext@1a407d53{/,[file:///tmp/jetty-0.0.0.0-8080-ROOT.war-_-any-4510228025526425427.dir/webapp/, jar:file:///tmp/jetty-0.0.0.0-8080-ROOT.war-_-any-4510228025526425427.dir/webapp/WEB-INF/lib/example-async-rest-jar-{VERSION}.jar!/META-INF/resources],AVAILABLE}{/ROOT.war}
2015-06-04 11:10:16.645:INFO:oejs.ServerConnector:main: Started ServerConnector@3abbfa04{HTTP/1.1,[http/1.1]}{0.0.0.0:8080}
2015-06-04 11:10:16.646:INFO:oejs.Server:main: Started @634ms
----
[[quickstart-changing-jetty-port]]
==== Changing the Jetty Port
You can configure Jetty to run on a different port by setting the `jetty.http.port` property on the command line:
[source, screen, subs="{sub-order}"]
----
> cd $JETTY_BASE
> java -jar $JETTY_HOME/start.jar jetty.http.port=8081
...
----
When the server starts, it will now run on port 8081.
It is important to note that setting properties on the command line will only take affect for that instance of the server.
To change the configuration so that the server will always start on the desired port, you will need to edit the `start.d/http.ini`
____
[NOTE]
--
The configuration by properties works via the following chain:
* The start.d/http.ini file is part of the effective command line and contains the --module=http argument which activates the http module.
* The modules/http.mod file defines the http module which specifies the etc/jetty-http.xml configuration file and the template ini properties it uses.
* The jetty.http.port property is used by the Property XML element in etc/jetty.http.xml to inject the ServerConnector instance with the port.
For more information see the link:#quick-start-configure[Quickstart Configuration Guide] and link:#configuring-connectors[Configuring Connectors].
--
____
[[quickstart-starting-https]]
==== Adding SSL for HTTPS & HTTP2
Building on the example above, we can activate additional modules to add support HTTPS and HTTP2 for the server.
To add HTTPS and HTTP2 connectors to a Jetty configuration, the modules can be activated by the following command:
[source, screen, subs="{sub-order}"]
----
> java -jar $JETTY_HOME/start.jar --add-to-start=https,http2
ALERT: There are enabled module(s) with licenses.
The following 1 module(s):
+ contains software not provided by the Eclipse Foundation!
+ contains software not covered by the Eclipse Public License!
+ has not been audited for compliance with its license
Module: alpn-impl/alpn-8
+ ALPN is a hosted at github under the GPL v2 with ClassPath Exception.
+ ALPN replaces/modifies OpenJDK classes in the sun.security.ssl package.
+ http://github.com/jetty-project/jetty-alpn
+ http://openjdk.java.net/legal/gplv2+ce.html
Proceed (y/N)? y
INFO : alpn-impl/alpn-1.8.0_92 dynamic dependency of alpn-impl/alpn-8
INFO : alpn transitively enabled, ini template available with --add-to-start=alpn
INFO : alpn-impl/alpn-8 dynamic dependency of alpn
INFO : http2 initialized in ${jetty.base}/start.d/http2.ini
INFO : https initialized in ${jetty.base}/start.d/https.ini
INFO : ssl transitively enabled, ini template available with --add-to-start=ssl
MKDIR : ${jetty.base}/lib/alpn
DOWNLD: http://central.maven.org/maven2/org/mortbay/jetty/alpn/alpn-boot/8.1.8.v20160420/alpn-boot-8.1.8.v20160420.jar to ${jetty.base}/lib/alpn/alpn-boot-8.1.8.v20160420.jar
MKDIR : ${jetty.base}/etc
COPY : ${jetty.home}/modules/ssl/keystore to ${jetty.base}/etc/keystore
INFO : Base directory was modified
> java -jar $JETTY_HOME/start.jar
[...]
2017-05-22 12:48:23.271:INFO:oejs.AbstractConnector:main: Started ServerConnector@134d0064{SSL,[ssl, alpn, h2, http/1.1]}{0.0.0.0:8443}
[...]
----
The `--add-to-start` command sets up the effective command line in the ini files to run an ssl connection that supports the HTTPS and HTTP2 protocols as follows:
* transitively enabled the `ssl` module that configures an SSL connector (eg port, keystore etc.) by adding `etc/jetty-ssl.xml` and `etc/jetty-ssl-context.xml` to the effective command line.
* transitively enabled the `alpn` module that configures protocol negotiation on the SSL connector by adding `etc/jetty-alpn.xml` to the effective command line.
* creates `start.d/https.ini` that configures the HTTPS protocol on the SSL connector by adding `etc/jetty-https.xml` to the effective command line.
* creates `start.d/http2.ini` that configures the HTTP/2 protocol on the SSL connector by adding `etc/jetty-http2.xml` to the effective command line.
* checks for the existence of a `etc/keystore` file and if not present, downloads a demonstration keystore file.
[[quickstart-changing-https-port]]
===== Changing the Jetty HTTPS Port
You can configure the SSL connector to run on a different port by setting the `jetty.ssl.port` property on the command line:
[source, screen, subs="{sub-order}"]
----
> cd $JETTY_BASE
> java -jar $JETTY_HOME/start.jar jetty.ssl.port=8444
----
Alternatively, property values can be added to the effective command line built from the `start.ini` file or `start.d/*.ini` files, depending on your set up.
Please see the section on link:#start-vs-startd[Start.ini vs. Start.d] for more information.
==== More start.jar options
The job of the `start.jar` is to interpret the command line, `start.ini` and `start.d` directory (and associated .ini files) to build a Java classpath and list of properties and configuration files to pass to the main class of the Jetty XML configuration mechanism.
The `start.jar` mechanism has many options which are documented in the xref:startup[] administration section and you can see them in summary by using the command:
[source, screen, subs="{sub-order}"]
----
> java -jar $JETTY_HOME/start.jar --help
----