[dotNetRDF-Develop] Issue CORE-301 has a new comment

SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 422-6466

<p>A new comment has been added to the following issue.</p>
<table border="0">
  <tr>
    <td width="90px" valign="top"><b>Title:</b></td>
    <td>SPARQL update fails against Sesame Endpoint secured with Basic HTTP Authentication</td>
  </tr>
  <tr>
    <td><b>Project:</b></td>
    <td>Core Library (dotNetRDF.dll)</td>
  </tr>
  <tr>
    <td><b>Created By:</b></td>
    <td>Daeron Meyer</td>
  </tr>
  <tr>
    <td><b>Date:</b></td>
    <td>2013-01-14 06:46 PM</td>
  </tr>
  <tr>
    <td><b>Comment:</b></td>
  </tr>
  <tr>
    <td colspan="2">Actually I'm pretty sure this is the problem. Looking at the dotNetRDF sesame connector code I believe what is happening is that the HTTPWebRequest is delivering the full POST (header + body) expecting it to go through, but Tomcat is rejecting it right after the initial header of the POST completes (thus 401 response) since no credentials are in the header.

I believe the POST header must not contain/specify the size of the body, so Tomcat has no choice but to go on and process the remaining body of the initial POST as a second HTTP request since this is HTTP/1.1 and the socket has been left open (unlike HTTP/1.0).

This fails (Response code 501) because the body of the POST by itself (without a header) is no longer HTTP protocol. If it were, then the log entry would be:

198.36.94.34 - - [09/Jan/2013:22:04:51 +0000] POST "update=PREFIX+rdf%3a+%3chttp%3a%2f....

Not 

198.36.94.34 - - [09/Jan/2013:22:04:51 +0000] "update=PREFIX+rdf%3a+%3chttp%3a%2f...

Make sense?

I can try setting up Wireshark to get a snapshot of the exact full POST request to verify this is the case.</td>
  </tr>
</table>
<p>
            More information on this issue can be found at
            <a href="http://www.dotnetrdf.org/tracker/Issues/IssueDetail.aspx?id=301" target="_blank">http://www.dotnetrdf.org/tracker/Issues/IssueDetail.aspx?id=301</a></p>
<p style="text-align:center;font-size:8pt;padding:5px;">
            If you no longer wish to receive notifications, please visit <a href="http://www.dotnetrdf.org/tracker/Account/UserProfile.aspx" target="_blank">your profile</a> and change your notifications options.
        </p>