wso2ei 6.4 - Return HTTP/1.1 202 Accepted

Question

We are migrating services from WSO2 ESB 4.7 to WSO2 EI 6.4.

The problem is that when we call a ESB soap 1.1 service this is executed correctly but the client (SoapUI in this case) receives a response code 202 with content-lenght 0 (status: HTTP/1.1 202 Accepted).

In carbon log we find this record: [SynapseWorker-2] WARN {org.apache.synapse.transport.passthru.PassThroughHttpSender} - Trying to submit a response to an already closed connection : http-incoming-1 The problem is not a timeout and if we change in SoapUI the content-type from request header we have a response with content-lenght > 0 Axis2 is configurated with text/xml enable both in Message Formatters and in Message Builders.

Any idea in order to address/solve the problem?

Answer 1

The message you're seeing: "Trying to submit a response to an already closed connection", could mean that the connection was closed by either the client or some operation inside your proxy/sequence. Are you handling the errors within the fault sequence?

I usually get unexpected 202 when there's something wrong with my service. It can be unhandled errors, not having <respond/> on the right place (like when using clone/iterate mediators without minding the threading behind these)...

My suggestion is to use logs and also debugging to see what happens before you get the 202 or the "Trying to submit a response to an already closed connection" message.