SoapUI get response but not the .Net Client

Question

I am trying to access a https Java webservice from .net client but always end up with "504 Gateway Timeout" exception.

I could get the response from the same webservice using SoapUI.

I also noticed that the request soap message of SoapUI and .net client aren't similar. My question is, does the wrong format of message gives the "504 Gateway Timeout" problem ? if yest, How could i modify the soap message in .net client?

Here are the request soap message that two different app generates:

SoapUI

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:v1="http://company.domain.com/EchoService/v1_00">
       <soapenv:Header/>
       <soapenv:Body>
          <v1:Echo>test</v1:Echo>
       </soapenv:Body>
</soapenv:Envelope>

.NET client

{<s:Envelope xmlns:a="http://www.w3.org/2005/08/addressing" xmlns:s="http://www.w3.org/2003/05/soap-envelope">
  <s:Header>
    <a:Action s:mustUnderstand="1">Echo</a:Action>
    <a:MessageID>urn:uuid:7a76925d-5bf0-4f2d-a9c5-c5a026e1eefb</a:MessageID>
    <a:ReplyTo>
      <a:Address>http://www.w3.org/2005/08/addressing/anonymous</a:Address>
    </a:ReplyTo>
  </s:Header>
  <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <Echo xmlns="http://company.domain.com/EchoService/v1_00">test</Echo>
  </s:Body>
</s:Envelope>}

Answer 1

sorry, folks nothing to do with wcf binding or soap message but the proxy was blocking the request. SoapUI could send/receive the message because it doesn't use proxy. just changed useDefaultWebProxy="false" in binding section of configuration.