How to verify your ESB is started with NIO transport or servlet transport

All WSO2 Carbon products use HTTP Servlet Transport Implementation as default HTTP/HTTPS transport, except for WSO2 ESB.  ESB is shipped with HTTP-NIO Transport Implementation as the default transport.

To verify this we can check the following configuration in axis2.xml which resides in ESB_HOME/repository/conf. As we already know axis2.xml keeps the global configuration for WSO2  Carbon based products. The <transportReceiver> and <transportSender> elements within it are used to configure the transport receivers and senders of the server.


If the product is configured to use HTTP-NIO transport implementation the <transportReceiver> and <transportSender> should be set as below.

   <transportReceiver name="http" class="org.apache.synapse.transport.nhttp.HttpCoreNIOListener">
        <parameter name="port" locked="false">8280</parameter>
        <parameter name="non-blocking" locked="false">true</parameter>
        <!--parameter name="bind-address" locked="false">hostname or IP address</parameter-->
        <!--parameter name="WSDLEPRPrefix" locked="false">https://apachehost:port/somepath</parameter-->
        <parameter name="httpGetProcessor" locked="false">org.wso2.carbon.transport.nhttp.api.NHttpGetProcessor</parameter>
        <!--<parameter name="priorityConfigFile" locked="false">location of priority configuration file</parameter>-->
    </transportReceiver>
    <!-- the non blocking https transport based on HttpCore + SSL-NIO extensions -->
    <transportReceiver name="https" class="org.apache.synapse.transport.nhttp.HttpCoreNIOSSLListener">
        <parameter name="port" locked="false">8243</parameter>
        <parameter name="non-blocking" locked="false">true</parameter>
        <!--parameter name="bind-address" locked="false">hostname or IP address</parameter-->
        <!--parameter name="WSDLEPRPrefix" locked="false">https://apachehost:port/somepath</parameter-->
        <!--<parameter name="priorityConfigFile" locked="false">location of priority configuration file</parameter>-->
        <parameter name="httpGetProcessor" locked="false">org.wso2.carbon.transport.nhttp.api.NHttpGetProcessor</parameter>
        <parameter name="keystore" locked="false">
            <KeyStore>
                <Location>repository/resources/security/wso2carbon.jks</Location>
                <Type>JKS</Type>
                <Password>wso2carbon</Password>
                <KeyPassword>wso2carbon</KeyPassword>
            </KeyStore>
        </parameter>
        <parameter name="truststore" locked="false">
            <TrustStore>
                <Location>repository/resources/security/client-truststore.jks</Location>
                <Type>JKS</Type>
                <Password>wso2carbon</Password>
            </TrustStore>
        </parameter>
        <!--<parameter name="SSLVerifyClient">require</parameter>
            supports optional|require or defaults to none -->
    </transportReceiver>

 <!-- the non-blocking http transport based on HttpCore + NIO extensions -->
    <transportSender name="http" class="org.apache.synapse.transport.nhttp.HttpCoreNIOSender">
        <parameter name="non-blocking" locked="false">true</parameter>
    </transportSender>
    <transportSender name="https" class="org.apache.synapse.transport.nhttp.HttpCoreNIOSSLSender">
        <parameter name="non-blocking" locked="false">true</parameter>
        <parameter name="keystore" locked="false">
            <KeyStore>
                <Location>repository/resources/security/wso2carbon.jks</Location>
                <Type>JKS</Type>
                <Password>wso2carbon</Password>
                <KeyPassword>wso2carbon</KeyPassword>
            </KeyStore>
        </parameter>
        <parameter name="truststore" locked="false">
            <TrustStore>
                <Location>repository/resources/security/client-truststore.jks</Location>
                <Type>JKS</Type>
                <Password>wso2carbon</Password>
            </TrustStore>
        </parameter>
        <parameter name="HostnameVerifier">DefaultAndLocalhost</parameter>
            <!--supports Strict|AllowAll|DefaultAndLocalhost or the default if none specified -->
    </transportSender>