J2Me installation via OTA

I'm trying to install my application midlet via OTA. I used apache tomcat 6 as the ota server, and create a small project in the webapps folder which contains application.jad, application.jar and welcome.html which has a link point to the .jad file. I tested the installation using sun emulator it installs just fine.

But when I tried to install on a mobile by typing the url: serverurl:8080/JMEAPP/welcome.html, it gives an error saying "Operation you request cannot be proceeded". Error number is 502.

Frustrating thing is installation works on one phone (SH06A). In all other phones I tested belongs to japan's third largest mobile network provider (I dunno whether it's ok to mention brand names here, so I didn't, I'm sorry). All of those phones gives above mentioned error (But none of them are NOKIA, we installed it on a nokia phone by bluetooth, it works.). But all of them didn't even seems to read the jad file.

Therefore, can you one tell me the issue here. Is it a security issue? or can network providers can block their phones so that we cannot install anything on their phones? Or is this a compatibility issue?

I couldn't find a reason for th开发者_高级运维is issue.

The 502 is a clue. This indicates that something is going wrong between your handset and your server, probably in the bit between the MNO network and your server. If you just use a browser on your desktop computer to look at the welcome.html file does all seem ok?

It's not quite clear from your question - you say the SH06A worked - was that OTA? But with a different MNO to all the ones that failed?

In the UK there is some, rather unpredictable, filtering in the proxy/caches that MNOs operate. It might be that your problem MNO doesn't like sending traffic to the specific 8080 port. You might try running on a different port (ideally 80) or create a virtual server so no port appears in the URL.

Your observation on JAD files sounds correct - the handsets are not loading the welcome.html, so they don't have the JAD URL to attempt to load.

Check what application mime type is being sent out when you download a jad and a jar. If it is not the following then you might have to edit the conf files appropriately to send the mime types

jad - text/vnd.sun.j2me.app-descriptor jar - application/java-archive

You can sniff the network packets using some packet sniffing tool like Wireshark