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The Multi-HTTPS transport is similar to the HTTPS-NIO transport, but it allows you to have different SSL profiles with separate trust stores and keystores for different hosts using the same ESB. WSO2 ESB uses trust stores and a keystores for SSL protocol implementation.The ESB can listen to different host IPs and ports for incoming HTTPS connections, and each IP/Port will have a separate SSL profile configured.

Enabling the transport

The following transport receiver and transport sender classes should be included in the ESB configuration in order to enable the Multi-HTTPS transport.

Transport receiver

The receiver class can either be org.apache.synapse.transport.nhttp.HttpCoreNIOMultiSSLListener or org.apache.synapse.transport.passthru.PassThroughHttpMultiSSLListener.

You can enable the Multi-HTTPS transport receiver by adding the following configuration in the <ESB_HOME>/repository/conf/Axis2/axis2.xml file under the Transport Ins (Listeners) section:

<transportReceiver name="multi-https" class="org.apache.synapse.transport.nhttp.HttpCoreNIOMultiSSLListener">
        <parameter name="port">8343</parameter>
        <parameter name="non-blocking">true</parameter>
        <parameter name="SSLProfiles">
            <profile>
                <bindAddress>192.168.1.2</bindAddress>
                <KeyStore>
                    <Location>/path/to/testhost1.p12</Location>
                    <Type>PKCS12</Type>
                    <Password>test</Password>
                    <KeyPassword>test</KeyPassword>
                </KeyStore>
            </profile>
            <profile>
                <bindAddress>192.168.1.3</bindAddress>
                <KeyStore>
                    <Location>/path/to/testhost2.p12</Location>
                    <Type>PKCS12</Type>
                    <Password>test</Password>
                    <KeyPassword>test</KeyPassword>
                </KeyStore>
            </profile>
            <profile>
                <bindAddress>192.168.1.4</bindAddress>
                <KeyStore>
                    <Location>/path/to/testhost3.p12</Location>
                    <Type>PKCS12</Type>
                    <Password>test</Password>
                    <KeyPassword>test</KeyPassword>
                </KeyStore>
                <TrustStore>
                    <Location>/path/to/testtrust.jks</Location>
                    <Type>JKS</Type>
                    <Password>nopassword</Password>
                </TrustStore>
                <SSLVerifyClient>require</SSLVerifyClient>
            </profile>
        </parameter>
</transportReceiver>

Transport sender

The sender class can either be org.apache.synapse.transport.nhttp.HttpCoreNIOMultiSSLSender or org.apache.synapse.transport.passthru.PassThroughHttpMultiSSLSender.

You can enable the Multi-HTTPS transport sender by adding the following configuration in the <ESB_HOME>/repository/conf/Axis2/axis2.xml file under the Transport Outs (Senders) section:

<transportSender name="https" class="org.apache.synapse.transport.nhttp.HttpCoreNIOSSLSender">
    	<parameter name="non-blocking" locked="false">true</parameter>
	<parameter name="customSSLProfiles">
		<profile>
		<servers>localhost:8244</servers>
		<KeyStore>
			<Location>repository/resources/security/esb.jks</Location>
			<Type>JKS</Type>
			<Password>123456</Password>
		    <KeyPassword>123456</KeyPassword>
        </KeyStore>
		<TrustStore>			
            <Location>repository/resources/security/esbtruststore.jks</Location>
			<Type>JKS</Type>
			<Password>123456</Password>
		</TrustStore>
		</profile>
    </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">AllowAll</parameter>
</transportSender>

Dynamic SSL Profiles

In addition to updating axis2.xml with the SSL profile configurations, you can dynamically load the SSL profiles at runtime using a periodic schedule or JMX invocation. Now instead of reloading the entire axis2.xml at runtime, you can reload the new configuration files that contain only the custom profile information for the sender and receiver.

Enabling dynamic SSL profiles

The following configuration changes should be done in the Multi-HTTPS transport receiver and sender.

Do the following changes in the Multi-HTTPS transport receiver:

  • Edit the <ESB_HOME>/repository/conf/Axis2/axis2.xml file and add the dynamicSSLProfilesConfig parameter as follows:

    <transportReceiver name="https" class="org.apache.synapse.transport.nhttp.HttpCoreNIOMultiSSLListener">
      .........
	<parameter name="dynamicSSLProfilesConfig">
		<filePath>repository/conf/sslprofiles/listenerprofiles.xml</filePath>
		<fileReadInterval>3600000</fileReadInterval>		
	</parameter>
      .........
</transportReceiver>

  • Create the listenerprofiles.xml file with the following configuration in the <ESB_HOME>/repository/conf/sslprofiles directory:

    Note:

    You can configure the file path for the listenerprofiles.xml file as required.

    Configuration for listenerprofiles.xml
    <parameter name="SSLProfiles">
<profile>
		<bindAddress>192.168.0.123</bindAddress>
		<KeyStore>
			<Location>repository/resources/security/esb.jks</Location>
			<Type>JKS</Type>
			<Password>123456</Password>
			<KeyPassword>123456</KeyPassword>
    		</KeyStore>
		<TrustStore>				
            <Location>repository/resources/security/esbtruststore.jks</Location>
			<Type>JKS</Type>
			<Password>123456</Password>
		</TrustStore>
		<SSLVerifyClient>require</SSLVerifyClient>
  	</profile>
</parameter>

    The SSL profile will be applied to each request that is received at the IP specified within the <bindAddress> element.

 

Do the following changes in the Multi-HTTPS transport sender:

  • Edit the <ESB_HOME>/repository/conf/Axis2/axis2.xml file and add the  dynamicSSLProfilesConfig parameter as follows:

    <transportSender name="https" class="org.apache.synapse.transport.nhttp.HttpCoreNIOSSLSender">
    .......  
<parameter name="dynamicSSLProfilesConfig">
		<filePath>repository/conf/sslprofiles/senderprofiles.xml</filePath>
		<fileReadInterval>3600000</fileReadInterval>		
	</parameter>
	.......
</transportSender>

  • Create the senderprofiles.xml file with the following configuration in the <ESB_HOME>/repository/conf/sslprofiles directory:

    Note:

    You can configure the file path for the senderprofiles.xml file as required.

    Configuration for senderprofiles.xml
    <parameter name="customSSLProfiles">
	<profile>
		<servers>localhost:8244,192.168.1.234:8245</servers>
		<KeyStore>
			<Location>repository/resources/security/esb.jks</Location>
			<Type>JKS</Type>
			<Password>123456</Password>
		    <KeyPassword>123456</KeyPassword>
        </KeyStore>
		<TrustStore>			
            <Location>repository/resources/security/esbtruststore.jks</Location>
			<Type>JKS</Type>
			<Password>123456</Password>
		</TrustStore>
	</profile>
</parameter>

    The SSL profile will be applied to each request that is sent to the destination server specified within the <servers> element as IP:Port combination.

Loading SSL profiles dynamically at runtime

You can either use a periodic schedule or a JMX invocation to apply custom profiles at runtime. The following section describes the two options in detail:

  • Periodic schedule - If you use this option, the ESB will automatically check updates of the file content and apply the custom profiles based on the value specified in the fileReadInterval parameter. For example, if you have set the fileReadInterval as 1 hour, the ESB will automatically check updates of the file content and apply the custom profile every 1 hour.

  • JMX Invocation - If you use this option, custom profiles will be applied dynamically by invoking the notifyFileUpdate method in the respective sender/listener MBean under the ListenerSSLProfileReloader or SenderSSLProfileReloader group in JConsole.

The following table provides information on the parameters that you can set when you enable dynamic SSL profiles:

Parameter NameDescriptionDefault Value
filePath The relative/absolute file path of the custom SSL profile configuration XML file.-
fileReadInterval The time interval (in milliseconds) in which configuration updates will be loaded and applied at runtime. This value should be greater than 1 hour.3600000

Synchronizing the profiles in a cluster

If you are running in a clustered environment and want your SSL profiles to be synchronised across the cluster nodes, you can move the SSLProfiles parameter from axis2.xml to <ESB_HOME>/repository/deployment/server/multi_ssl_profiles.xml. Then you can add the SSLProfilesConfigPath parameter to the Multi-HTTPS transport receiver configuration in the axis2.xml file and point to the new destination of the configuration.

For example, the Multi-HTTPS transport configuration in the axis2.xml file will now look as follows:

<transportReceiver name="multi-https" class="org.apache.synapse.transport.nhttp.HttpCoreNIOMultiSSLListener">
        <parameter name="port">8343</parameter>
        <parameter name="non-blocking">true</parameter>
        <parameter name="SSLProfilesConfigPath">
           <filePath>/repository/deployment/server/multi_ssl_profiles.xml</filePath>
        </parameter>
</transportReceiver>

To synchronise this configuration between two ESB nodes, you must enable ESB clustering and the SVN-Based Deployment Synchronizer. For more information, see Introduction to Deployment Synchronizer .

The <ESB_HOME>/repository/deployments/server directory will then be synchronized on the ESB nodes when the nodes are run in a clustered environment. If you change the multi_ssl_profiles.xml file, you must manually reload it into each ESB node by invoking the reloadSSLProfileConfig in the org.apache.synapse.MultiSSLProfileReload MBean in JConsole. For more information, see Monitoring the ESB.

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