Extensions
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## Extensions

This page contains information about Eclipse Implementation of XML Web Services 2.3.3 specific features and extensions:

## 1. Sending and Receiving SOAP Headers

At times you need a way to send and receive SOAP headers in your message - these headers may not be defined in the WSDL binding but your application needs to do it anyway. One approach has been to write a `SOAPHandler` to do it, but its more work and is expensive as `SOAPHandlers` work on `SOAPMesssage` which is DOM based and Eclipse Implementation of XML Web Services runtime would need to do conversion from its abstract `Message` representation to `SOAPMessage` and vice versa.

There is a way to do it on the client side by downcasting the proxy to `WSBindingProvider` and use methods on it.

### 1.1. Sending SOAP Headers

You would downcasting the proxy to `WSBindingProvider` and set the `Outbound` headers.

    HelloService helloService = new HelloService();
    HelloPort port = helloService.getHelloPort();
    WSBindingProvider bp = (WSBindingProvider) port;

    bp.setOutboundHeaders(
            // simple string value as a header, like stringValue
            Headers.create(new QName("simpleHeader"), "stringValue"),
            // create a header from Jakarta XML Binding object
            Headers.create(jaxbContext, myJaxbObject));

### 1.2. Receiving SOAP Headers

    List<Header> inboundHeaders = bp.getInboundHeaders();

## 2. Message logging

Web Services developers generally need to see SOAP Messages that are transferred between client and service for debugging. There are SOAP Monitors for this job, but you need modify the client or server code to use those tools. Eclipse Implementation of XML Web Services provides logging of SOAP messages

### 2.1. On the client

Set system property

    com.sun.xml.ws.transport.http.client.HttpTransportPipe.dump=true

### 2.2. On the server side

Set system property

    com.sun.xml.ws.transport.http.HttpAdapter.dump=true

## 3. Propagation of Server-side Stacktrace

This is a very useful feature while developing Web Services. Often the soap fault messages for not user defined faults does not convey enough information about the problem. Eclipse Implementation of XML Web Services relieves you from digging out the server logs to find out the stacktrace. Whole stacktrace (including nested exceptions) can be propagated in the SOAP Fault and the complete exception stacktrace can be made visible to the client as cause of `SOAPFaultException`.

### 3.1. Enabling propagation of Server-side stacktrace

Propagation of Stack trace is off by default. To turn it on for your Web Service Application to send the complete stack trace, set the system property

    com.sun.xml.ws.fault.SOAPFaultBuilder.captureStackTrace=true

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