gsoap (client)调用wcf服务出错

HTTP/1.1 500 Internal Server Error
Content-Type: multipart/related; type="application/xop+xml";start="<http://tempuri.org/0>";boundary="uuid:a1df2fc3-3f5e-46cd-b199-8227ca136464+id=17";start-info="application/soap+xml"
Server: Microsoft-IIS/7.0
MIME-Version: 1.0
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Date: Sat, 15 Oct 2011 03:12:04 GMT
Connection: close
Content-Length: 862
--uuid:a1df2fc3-3f5e-46cd-b199-8227ca136464+id=17
Content-ID: <http://tempuri.org/0>
Content-Transfer-Encoding: 8bit
Content-Type: application/xop+xml;charset=utf-8;type="application/soap+xml"<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing"><s:Header><a:Action s:mustUnderstand="1">http://www.w3.org/2005/08/addressing/fault</a:Action></s:Header><s:Body><s:Fault><s:Code><s:Value>s:Sender</s:Value><s:Subcode><s:Value>a:ActionMismatch</s:Value></s:Subcode></s:Code><s:Reason><s:Text xml:lang="zh-CN">消息上指定的 SOAP 操作“”与 HTTP SOAP 操作“anke:webctn:transitwcfservice:testadd”不匹配。 </s:Text></s:Reason><s:Detail><a:ProblemHeaderQName>a:Action</a:ProblemHeaderQName></s:Detail></s:Fault></s:Body></s:Envelope>
--uuid:a1df2fc3-3f5e-46cd-b199-8227ca136464+id=17--以上是服务响应的日志信息，请教高手问题到底出在哪里，在网上找了好久了，都么有解决方法。非常感谢路过大侠留言