SOAPFaultException thrown by a SOAPHandler produces erroneous MTOM response

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I have a SOAPHandler that throws a SOAPFAULTException from the handleMessage() method like follows:

String faultReason = "Something is missing.";
QName faultCode = SOAPConstants.SOAP_SENDER_FAULT;
fault = soapFactory.createFault(faultReason, faultCode);
throw new SOAPFaultException(fault);

When a client sends a multipart request that causes the mentioned SOAPFaultException, the jax-ws produces response like follows, that cannot be parsed by a .Net client:

---[HTTP response 500]---
--null
Content-Id: null
Content-Type: application/xop+xml;charset=utf-8;type="text/xml"
Content-Transfer-Encoding: binary

<?xml version='1.0' encoding='UTF-8'?>
<S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
  <S:Body>
    <S:Fault xmlns:ns4="http://www.w3.org/2003/05/soap-envelope">
	  <faultcode>ns4:Sender</faultcode>
	  <faultstring>Something is missing.</faultstring>
	</S:Fault>
  </S:Body>
</S:Envelope>
--null----------------------

The .Net cleint cannot parse such response, probably due to "Content-Id: null" or "null" boundaries.
The reponse was generated by version 2.2.7. Version 2.2.8 generates response like follows:

---[HTTP response 500]---
------=_Part_23_31110117.1387295878382
Content-Id: <rootpart@soapui.org>
Content-Type: application/xop+xml;charset=UTF-8;type="text/xml"
Content-Transfer-Encoding: binary

<?xml version='1.0' encoding='UTF-8'?>
<S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
  <S:Body>
    <S:Fault xmlns:ns4="http://www.w3.org/2003/05/soap-envelope">
	  <faultcode>ns4:Sender</faultcode>
	  <faultstring>Something is missing.</faultstring>
	</S:Fault>
  </S:Body>
</S:Envelope>
------=_Part_23_31110117.1387295878382----------------------

, where the "_Part_23_31110117.1387295878382" value was not generated by the jax-ws, but is taken from the request:

---[HTTP request]---
accept-encoding: gzip,deflate
connection: Keep-Alive
content-length: 6566
content-type: multipart/related; type="application/xop+xml"; start="<rootpart@soapui.org>"; start-info="text/xml"; boundary="----=_Part_23_31110117.1387295878382"
host: localhost:8080
mime-version: 1.0
soapaction: ""
user-agent: Apache-HttpClient/4.1.1 (java 1.5)

------=_Part_23_31110117.1387295878382
Content-Type: application/xop+xml; charset=UTF-8; type="text/xml"
Content-Transfer-Encoding: 8bit
Content-ID: <rootpart@soapui.org>

<soapenv:Envelope ...

May the response reuse boundaries provided in the request? Should the boundaries values somehow relate to the Content-Id?

Workaround throw a RuntimeException instead of SOAPFaultException, though in that case, you cannot control faultcode value: it will always be "Server"

---[HTTP response 500]---
--uuid:2d993b2c-b70a-459c-984b-33758c3bfd31
Content-Id: <rootpart*2d993b2c-b70a-459c-984b-33758c3bfd31@example.jaxws.sun.com>
Content-Type: application/xop+xml;charset=UTF-8;type="text/xml"
Content-Transfer-Encoding: binary

<?xml version='1.0' encoding='UTF-8'?>
<S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
  <S:Body>
    <S:Fault xmlns:ns4="http://www.w3.org/2003/05/soap-envelope">
      <faultcode>S:Server</faultcode>
	  <faultstring>Something is missing.</faultstring>
	</S:Fault>
  </S:Body>
</S:Envelope>
--uuid:2d993b2c-b70a-459c-984b-33758c3bfd31----------------------

Affected Versions

[2.2.7, 2.2.8]

[glassfishrobot]

Reported by vladkravchenko

[glassfishrobot]

This issue was imported from java.net JIRA JAX_WS-1138