Javax Websocket
Since Camel 2.23
Both producer and consumer are supported
The JSR356 component provides websocket endpoints for communicating with clients using JSR356 (javax).
URI format
To consume from the local instance on a particular path
the messages:
websocket-jsr356://${path}
To consume from a remote instance - i.e. Camel will be a client - on a particular uri
the messages:
websocket-jsr356://${uri}
You can append query options to the URI in the following format,
?option=value&option=value&…
Websocket Options
The Javax Websocket component supports 4 options, which are listed below.
Name | Description | Default | Type |
---|---|---|---|
bridgeErrorHandler (consumer) |
Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored. |
false |
boolean |
lazyStartProducer (producer) |
Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing. |
false |
boolean |
basicPropertyBinding (advanced) |
Whether the component should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities |
false |
boolean |
serverEndpointDeployment Strategy (advanced) |
To enable customization of how a WebSocket ServerEndpoint is configured and deployed. By default DefaultServerEndpointDeploymentStrategy is used. |
ServerEndpointDeploymentStrategy |
The Javax Websocket endpoint is configured using URI syntax:
websocket-jsr356:uri
with the following path and query parameters:
Path Parameters (1 parameters):
Name | Description | Default | Type |
---|---|---|---|
uri |
If a schemeless URI path is provided, a ServerEndpoint is deployed under that path. Else if the URI is prefixed with the 'ws://' scheme, then a connection is established to the corresponding server |
URI |
Query Parameters (7 parameters):
Name | Description | Default | Type |
---|---|---|---|
sessionCount (common) |
Used when the endpoint is in client mode to populate a pool of sessions |
1 |
int |
bridgeErrorHandler (consumer) |
Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored. |
false |
boolean |
exceptionHandler (consumer) |
To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this option is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored. |
ExceptionHandler |
|
exchangePattern (consumer) |
Sets the exchange pattern when the consumer creates an exchange. The value can be one of: InOnly, InOut, InOptionalOut |
ExchangePattern |
|
lazyStartProducer (producer) |
Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing. |
false |
boolean |
basicPropertyBinding (advanced) |
Whether the endpoint should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities |
false |
boolean |
synchronous (advanced) |
Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported). |
false |
boolean |
Spring Boot Auto-Configuration
When using websocket-jsr356 with Spring Boot make sure to use the following Maven dependency to have support for auto configuration:
<dependency>
<groupId>org.apache.camel.springboot</groupId>
<artifactId>camel-websocket-jsr356-starter</artifactId>
<version>x.x.x</version>
<!-- use the same version as your Camel core version -->
</dependency>
The component supports 5 options, which are listed below.
Name | Description | Default | Type |
---|---|---|---|
camel.component.websocket-jsr356.autowired-enabled |
Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc. |
true |
Boolean |
camel.component.websocket-jsr356.bridge-error-handler |
Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored. |
false |
Boolean |
camel.component.websocket-jsr356.enabled |
Whether to enable auto configuration of the websocket-jsr356 component. This is enabled by default. |
Boolean |
|
camel.component.websocket-jsr356.lazy-start-producer |
Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing. |
false |
Boolean |
camel.component.websocket-jsr356.server-endpoint-deployment-strategy |
To enable customization of how a WebSocket ServerEndpoint is configured and deployed. By default DefaultServerEndpointDeploymentStrategy is used. The option is a org.apache.camel.websocket.jsr356.ServerEndpointDeploymentStrategy type. |
ServerEndpointDeploymentStrategy |