Live data from Hacker News

WiFi without internet on a Southwest flight

jamesbvaughan.com

131–140 of 675 posts

Re: WiFi without internet on a Southwest flight

#131

I'm an Alaska (relatively) frequent flyer. That airline offers a free "messaging" plan, that lets you send and receive messages on apps like iMessage, Facebook Messenger and Whatsapp. Though, it somehow prevents images/attachments from coming through on those platforms. I've always wondered how this is implemented technically, and if it might be possible to setup some kind of protocol/wrapper to send data that looks…

IP-over-Facebook. So that's what the world has come to ...

Re: WiFi without internet on a Southwest flight

#132
post #58

Earlier quoted context omitted.

In the US (I believe) Net Neutrality basically died. Even before that, it was allowed to zero-rate categories of apps (like messaging). That might be coming back now that the FCC has 5 commissioners again and can reinstate Net Neutrality. However, even with reasonably strict neutrality, this is still possible. Many mobile carriers zero-rated streaming services here, but unlike your operators they'd do it for any stre…

This is the situation where net neutrality falls over because there's very often more demand, even at 1.5Mbps for a stream, than an airplane's link can provide.

On an airplane in particular, you can set the limit lower for everything, and that doesn't violate neutrality.

Re: WiFi without internet on a Southwest flight

#133
post #80

It is just 8 bucks for the full service... just buy the internet bro. It is actually pretty good.

Tomorrow it'll be 8 bucks to drink water, 8 bucks to use the bathroom, ...

Yeah, you can argue internet isn't a necessity. Neither is the bathroom, you can use a poo bag and a diaper. But we're a civilized society. So we provide bathrooms to anyone that needs them. And internet access.

Re: WiFi without internet on a Southwest flight

#135
post #89

Earlier quoted context omitted.

You're not understanding the point of the comment. The Flighty team did some amazing engineering work for anyone who doesn't pay.

> amazing engineering Background updates are a built-in, supported, documented feature, widely employed by applications on the platform, and accessible to anyone that reads the two pages of documentation required to use them: “Pushing background updates to your App — Deliver notifications that wake your app and update it in the background.” https://developer.apple.com/documentation/usernotifications/... edited for po…

I build AI/ML systems. I think delivering digital content through alternative pipes is amazing work. It has applicability far beyond simple aerospace wifi paywalls.

Re: WiFi without internet on a Southwest flight

#136
“According to this data, the plane’s altitude was only fluctuating by about 20-30 feet. This is more stable than I expected!”

Autopilots are very good and they are servoing to the pressure altitude.

Many pressure altitude encoders used in modern aircraft (for example to drive altitudes that transponders report to SSR radar or via ADS-B) have 25 ft encoding resolution. That 25ft resolution is likely what is being seen here. Other encoders have 10 ft resolution but 25 ft is very common.

Re: WiFi without internet on a Southwest flight

#137

Earlier quoted context omitted.

I tried to change the flight level by PATCHing altitude, but it seemed to require authentication. Oh well.

This sounds like a good way to meet some upset people with expensive sunglasses shortly after you land.

It's not like that at all. The sunglasses aren't that expensive.

Re: WiFi without internet on a Southwest flight

#138
post #135

Earlier quoted context omitted.

> amazing engineering Background updates are a built-in, supported, documented feature, widely employed by applications on the platform, and accessible to anyone that reads the two pages of documentation required to use them: “Pushing background updates to your App — Deliver notifications that wake your app and update it in the background.” https://developer.apple.com/documentation/usernotifications/... edited for po…

I build AI/ML systems. I think delivering digital content through alternative pipes is amazing work . It has applicability far beyond simple aerospace wifi paywalls.

> I build AI/ML systems.

What’s the relevance?

Push notifications aren’t some odd “alternative pipe” and conveying data via push notifications is a known and supported use-case.

Re: WiFi without internet on a Southwest flight

#139

Did you have permission to do that ? Sounds pretty risky to be probing the network of a flight imo.

No permission - just curiosity :)

I'm not too concerned about the risk associated with fetching a JSON file that their flight status page is already fetching on a loop. That said, I'm curious what risks you have in mind.

Re: WiFi without internet on a Southwest flight

#140

Did you have permission to do that ? Sounds pretty risky to be probing the network of a flight imo.

There's no "probing the network" involved here.

The in-flight webpage was continuously fetching a specific end-point from the in-flight web server.

This end-point is basically public data.

All he did was duplicate what the webpage was already doing, and then do some basic analysis on the data the end-point was returning.

Post reply on HN