Kannel: Open-Source WAP and SMS Gateway

> “HTTP is also too inefficient for wireless use. By using a semantically equivalent, but binary and compressed format it is possible to reduce the protocol overhead to a few bytes per request, instead of up to hundreds of bytes.”

Around the turn of the millennium, there were numerous international committees and hundreds of millions of dollars spent by companies on this idea that we simply can’t use the existing internet on mobile phones, so there needs to be something else.

Of course for the companies it was mostly a plot to capture the web, which was uncomfortably open and uncontrolled. The mobile operators were used to charging 20 cents for sending a 140-character message and 1 euro for delivering a monophonic ringtone. They wanted to be the gatekeepers and content curators of the mobile web, taking a cut on every bit of content that flows to devices. (I remember vision PowerPoints where operators imagined that one day when video can be watched on mobile phones, they’d be making more money from each watch than the studios.)

“We must save 200 bytes on HTTP headers or the network will melt!” was just a convenient excuse to build a stack they could own end-to-end.

> Around the turn of the millennium, there were numerous international committees and hundreds of millions of dollars spent by companies on this idea that we simply can’t use the existing internet on mobile phones, so there needs to be something else.

This was not unreasonable. GPRS started to roll out around 2002. And it was quite spotty initially, to say the least. The phone hardware was also quite underpowered, good old Nokia 3310 had a whopping 2kB of RAM accessible to the software.

I got my first mobile phone in 2000 that had WAP-over-SMS, and it was quite useful. I could check the weather forecast, and my university had a nice WAP site with important notifications (scheduling changes, exam reminders, etc.)