Difference between CommonsHTTPTransportSender and org.apache.synapse.transport.passthru.PassThroughHttpSSLSender

Question

What is the difference between the 2 transport sender. When I invoke an HTTP URL from an axis service (deployed in wso2 esb), with CommonsHTTPTransportSender as transportSender for https channel, service works fine, where as with PassThroughHttpSSLSender as transportSender throws exception

AxisEngine Message Receiver not found for AxisOperation: {oauth2.identity.carbon.wso2.org}validate org.apache.axis2.AxisFault: Message Receiver not found for AxisOperation: {oauth2.identity.carbon.wso2.org}validate

What is the difference, and how would I get over this issue?

Answer 1

Though I do not know the difference between those different transport senders, but the error was due to an issue in the service code, which was through some exception. When I handled it properly, this issue did not arise with either of them.