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Chapter 7. Atmosphere-Websocket
Atmosphere Websocket Servlet Component
Available as of Camel 2.14
The atmosphere-websocket: component provides Websocket based endpoints for a servlet communicating with external clients over Websocket (as a servlet accepting websocket connections from external clients). The component uses the Chapter 128, SERVLET component and uses the Atmosphere library to support the Websocket transport in various Servlet containers (e..g., Jetty, Tomcat, ...).
Unlike the Chapter 159, Websocket component that starts the embedded Jetty server, this component uses the servlet provider of the container.
Maven users will need to add the following dependency to their
pom.xml for this component:
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-atmosphere-websocket</artifactId>
<version>x.x.x</version>
<!-- use the same version as your Camel core version -->
</dependency>URI Format
atmosphere-websocket:///relative path[?options]
Reading and Writing Data over Websocket
An atmopshere-websocket endpoint can either write data to the socket or read from the socket, depending on whether the endpoint is configured as the producer or the consumer, respectively.
Configuring URI to Read or Write Data
In the route below, Camel will read from the specified websocket connection.
from("atmosphere-websocket:///servicepath")
.to("direct:next");
And the equivalent Spring sample:
<camelContext xmlns="http://camel.apache.org/schema/spring">
<route>
<from uri="atmosphere-websocket:///servicepath"/>
<to uri="direct:next"/>
</route>
</camelContext>
In the route below, Camel will read from the specified websocket connection.
from("direct:next")
.to("atmosphere-websocket:///servicepath");
And the equivalent Spring sample:
<camelContext xmlns="http://camel.apache.org/schema/spring">
<route>
<from uri="direct:next"/>
<to uri="atmosphere-websocket:///servicepath"/>
</route>
</camelContext>