[jamal-kumar]

I remember trying this (Also in Latin America with Zuckerberg's creepy old "internet.com" initiative to make his services free in the third world, which is a done and over with promotion by now at least in Costa Rica) and realizing that ICMP/DNS tunneling was faster and more reliable, you can only get like half-duplex TCP over whatsapp messages and then the frames are limited if you're going to fit them in per message to like 1,024 characters (Though it seems you got more in there?)... DNS or ICMP tunnelling further works on things like getting a foothold for checking your email in some far flung airport network with a broken/sketchy payment gateway, you REALLY need to check your email, and where that passes but nothing else does. Then there's the risk that they decide to ban your SIM chip as you mention, which is like a 2$ mistake in such regions but if you do it on your main number you're risking having to tell everyone "yeah i tried to hack whatsapp and they blocked my old number haha" because that's what they've funnelled everyone into using out there with this free data transfer deal on that platform.

By the way your implementation looks way nicer than what I was working with before.