Installing application updates over HTTP

[pbmau]

Guys,

I have my app downloading component updates over http, which is all working good on the emulator.

I'd like to know what people think about how these updates should be applied..i.e the updates could be an upgrade to an existing dll, should they be download as a sis and then installed, or should the dll be directly replaced ?

I'm happy to directly replace but cannot implement this currently on the emulator because dll's/exe's are not kept in \sys\bin, which is a bit of a pain.

Can you simulate a *.sis installation on the emulator ?? I'm guessing you cannot and you'd need capabilities to directly replace the dll.

Suggestions ?

thanks

[cdavies]

You're right, you'd need TCB to install the update directly. You're going to need to go via the install engine,

I'd suggest you deliver your updates in the form of SIS Patch (SP) or Partial Upgrade (PU) SIS files (probably the later if you need to replace things) and then feed them to the installer on device.

[VinodRaut]

Guys,

I have my app downloading component updates over http, which is all working good on the emulator.

I'd like to know what people think about how these updates should be applied..i.e the updates could be an upgrade to an existing dll, should they be download as a sis and then installed, or should the dll be directly replaced ?

I'm happy to directly replace but cannot implement this currently on the emulator because dll's/exe's are not kept in \sys\bin, which is a bit of a pain.

Can you simulate a *.sis installation on the emulator ?? I'm guessing you cannot and you'd need capabilities to directly replace the dll.

Suggestions ?

thanks

Dear...

I also want to develope such an application.. Can you help me in the design of it. How you did it? I am not very experianced developer in the symbian env.
If you help I will be very grateful to you.

Thanx & Regards,
Vinod.

[pbmau]

Hi VinodRaut

1. Set up an HTTP server with your update files.
2. Test download by using your desktop and submitting an http request that
returns XML containing details of all files available (URI's that point to update files are contained within that XML).
3. Submit the HTTP request on the device.

Look at the AppProts code example on how to use RHTTPSession/RHTTPTransaction classes. This API has made it real easy.

4. Parse the XML.

Check-out CParser class to do this. Some links below:

http://mobile.antonypranata.com/2007...in-symbian-os/
http://wiki.forum.nokia.com/index.ph..._CParser_class

How you structure the XML response is up to you, you may need version information inside it etc.

Hope that helps


Paul

[pbmau]

Thanks Mr Davies )