content-length property in wireless toolkit

[Greg Schwartz]

I am trying to test the HTTP network functionality in one of my applications. This functionality works on most phones with the exception of some Sony Ericsson models. I downloaded the Wireless Toolkit to test this HTTP functionality using the "Network Monitor" feature in this SDK. When I run the HTTP POST in my MIDlet, I receive the following message from the server:
HTTP/1.1 411 Length Required

  
hc = (HttpConnection)Connector.open(url);
hc.setRequestMethod(HttpConnection.POST);
hc.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
hc.setRequestProperty("Content-Length", Integer.toString(message.length()));
hc.setRequestProperty("User-Agent", "Profile/MIDP-1.0 Configuration/CLDC-1.0" );
hc.setRequestProperty("Content-Language", "en-US" );

All of the above HTTP header properties appear in the network monitor screen with the exeption of 'content-length' which does not seem to work.
Any suggestions would be greatly appreciated.
Thanks!

[Michael Yuan]

Which server are you using? Tomcat? Apache? Can you intercept the request at the server end and see if the "Content-length" header is there? I have the feeling that the server is reporting a wrong error message.

[Greg Schwartz]

Michael,
We use an outside hosting company, PHPWebHosting.com . Could you explain how we could intercept the packet on the server side as you mentioned?
Please note that the same jar/jad files worked correctly on a Nokia phone using the T-Mobile network. With that said, it seems that it is either the specific phone or the emulator that is causing this issue.
Thanks so much for your help!
Greg

[Michael Yuan]

Well, if you control the server, you can attach a network monitor and see exactly what it receives from the client. My guess is that T-Mobile did not like the headers sent by your SE and somehow altered the HTTP request in a non-standard way. That triggered the abnormal server response. After all, 411 error is very rare.
To understand this properly, you need to intercept the traffic at socket level. I would suggest you to replace that remote IP with a server that you have control of. Then you can see what exactly is passed from the network. Please post back when you have solution.