Route messages based on HTTP Headers with WSO2 ESB

Following can be used to route messages based on HTTP Headers.

<proxy xmlns="http://ws.apache.org/ns/synapse" name="test1" transports="https,http" statistics="disable" trace="disable" startOnLoad="true">
   <target>
      <inSequence>
         <log level="custom">
            <property name="log" expression="get-property('transport','Accept')" />
         </log>
         <filter xmlns:ns="http://org.apache.synapse/xsd" source="get-property('transport','Accept')" regex="text/html">
            <then>
               <log level="custom">
                  <property name="test" value="text/html" />
               </log>
               <sequence key="sequence1" />
            </then>
            <else>
               <log level="custom">
                  <property name="test" value="other" />
               </log>
               <sequence key="sequence2" />
            </else>
         </filter>
         <send>
            <endpoint>
               <address uri="http://localhost:9000/services/SimpleStockQuoteService" format="soap12" />
            </endpoint>
         </send>
      </inSequence>
      <outSequence>
         <send />
      </outSequence>
   </target>
</proxy>

More details available at [1]

[1] http://wso2.org/project/esb/java/4.0.3/docs/samples/proxy_samples.html#Sample157