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<p class="MsoNormal">I could not find this question in the archives so I must be missing something obvious. Apologies if this has been answered and I didn’t find it.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am deploying a Shibboleth IDP 3.3.2. My SP requires unsolicited SSO and it seems to be working as expected. My problem is that my user agent (client browser) reaches everything through a reverse proxy, i.e. the IDP, the SP and the final
target URLs must all be reached using the proxy host.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My only authentication flow is the default authn/Password. My SP metadata also requires HTTP-POST binding for the assertion consumer service. The form sent back to the browser is filled in with the “$ticket” and “$service” values as shown
in postback.vm:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><body onload="document.forms[0].submit()"><o:p></o:p></p>
<p class="MsoNormal"><div class="wrapper"><o:p></o:p></p>
<p class="MsoNormal"> <div class="center"><o:p></o:p></p>
<p class="MsoNormal"> ...<o:p></o:p></p>
<p class="MsoNormal"> <form action="$service" method="post"><o:p></o:p></p>
<p class="MsoNormal"> <div><o:p></o:p></p>
<p class="MsoNormal"> <input type="hidden" name="$ticketParamName" value="$ticket"/><o:p></o:p></p>
<p class="MsoNormal"> </div><o:p></o:p></p>
<p class="MsoNormal"> <noscript><o:p></o:p></p>
<p class="MsoNormal"> <div><o:p></o:p></p>
<p class="MsoNormal"> <input type="submit" value="Continue"/><o:p></o:p></p>
<p class="MsoNormal"> </div><o:p></o:p></p>
<p class="MsoNormal"> </noscript><o:p></o:p></p>
<p class="MsoNormal"> </form><o:p></o:p></p>
<p class="MsoNormal"> </div><o:p></o:p></p>
<p class="MsoNormal"></div><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"></body><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The form action ($service) contains the SP assertion consumer service URL and the ticket value ($ticket) contains a relay state. The hosts in these values end up being those specified by the metadata (for the action) and by the target (for
the relay state), however I need them to be my proxy host. The form is just data to the proxy so the proxy is no help transforming the values.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I can’t be the first one in this situation so how is this typically handled? Can I transform the values in that form before it is sent?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Please let me know if you need more information.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Dave Dole<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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