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Cometd Component

The cometd: component is a transport for working with the jetty implementation of the cometd/bayeux protocol.
Using this component in combination with the dojo toolkit library it's possible to push Camel messages directly into the browser using an AJAX based mechanism.

URI format

cometd://host:port/channelname

The channelname represents a topic that can be subscribed by the Camel endpoints.

Examples

cometd://localhost:8080/service/mychannel
cometds://localhost:8443/service/mychannel

where cometds represents an SSL configured endpoint.

See this blog entry by David Greco whom contributed this component to Apache Camel, for a full sample.

Options

Name

Default Value

Description

resourceBase

 

It's the root directory for the web resources

timeout

240000

The server side poll timeout in milliseconds. This is how long the server will hold a reconnect request before responding.

interval

0

The client side poll timeout in milliseconds. How long a client will wait between reconnects

maxInterval

30000

The max client side poll timeout in milliseconds. A client will be removed if a connection is not received in this time.

multiFrameInterval

1500

the client side poll timeout if multiple connections are detected from the same browser

jsonCommented

true

If "true" then the server will accept JSON wrapped in a comment and will generate JSON wrapped in a comment. This is a defence against Ajax Hijacking

logLevel

1

0=none, 1=info, 2=debug

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