Thanks Dianne However I don't want to intercept the traffic to determine the number of bytes sent, I want to intercept TCP, replace it with a proprietary protocol (based on UDP) and then re-inject the packets into the stack as UDP (and do the reverse for incoming UDP packets which have been also converted from TCP by a server sitting in the network). I'm trying to find out the best way of achieving this.
Netfilter seems to be specifically designed to do this in Linux, however I'm under the understanding netfilter is disabled by default in the stock Android release. Is this correct? Are there any (many) devices on the market with it enabled? If we had to rebuild the kernel with it enabled we'd have to create a new rom image to flash devices with, ultimately we would need to do this with a network operator / device manufacturer as customer/partner so ultimately that's no problem. However if we wanted to create a proof-of-concept demo first, if we re-built the kernel, I'm presuming we wouldn't be able to flash a device because we wouldn't have access to the hardware specific drivers that would need to be included in the rom image. (i.e. suppose we want to demo on device X and Y, there will be I'm assuming be specific hardware drivers for things such as the screen, keyboard, modem etc. and if we had to re-build the kernel in order to actually that build onto a device we'd need those specific drivers for devices X and Y, along with anything else else necessary for the image to execute on those pieces of hardware). Could anybody comment on my speculation? Thanks -- unsubscribe: android-kernel+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-kernel
