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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Hi.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">I have following scenario in which I currently face a problem with Undertow:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">I use Undertow as a Reverse-Proxy (via SimpleProxyClientProvider).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">I want to enable a Signature-based authentication where the client can sign the HTTP request with its private key and the Reverse-Proxy (implemented with Undertow)
can check with the client’s public key if it was signed correctly.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">I do not only want to include HTTP headers (Host, Date, ..) and Method/Path, but also the request body.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">For that I need to consume the HttpServerExchange’s InputStream:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:navy">if
</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black">(<i>isHttpMethodWithBody</i>(method))<br>
{<br>
exchange.startBlocking();<o:p></o:p></span></p>
<pre style="background:white"><span lang="EN-US" style="font-family:"Arial","sans-serif""> </span><b><span lang="EN-US" style="color:navy">final </span></b><span lang="EN-US" style="color:black">String body = </span><b><span lang="EN-US" style="color:navy">new </span></b><span lang="EN-US" style="color:black">Scanner(exchange.getInputStream(), </span><b><span lang="EN-US" style="color:green">"UTF-8"</span></b><span lang="EN-US" style="color:black">).useDelimiter(</span><b><span lang="EN-US" style="color:green">"</span></b><b><span lang="EN-US" style="color:navy"><a href="file:///\\A">\\A</a></span></b><b><span lang="EN-US" style="color:green">"</span></b><span lang="EN-US" style="color:black">).next();<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"> ..<o:p></o:p></span></pre>
<pre style="background:white"><span lang="EN-US" style="color:black"><o:p> </o:p></span></pre>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Unfortunately in this scenario, the Exchange’s “getRequestChannel()” returns null as “another party already acquired the channel”.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">I found “</span><span lang="EN-US" style="color:black">Connectors.<i>resetRequestChannel</i>(exchange)”;</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">But just calling this results after the InputStream was consumed results in a “IOException : UT001000: Connection closed”.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Is there any way to “consume” the request’s payload, but afterwards simply forward to the proxy target?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Any help is really appreciated, Thanks!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">--<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif"">Thomas Jäckle<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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