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Show HN: TxtNet Browser – Browse the Web over SMS, No Wi-Fi/Mobile Data Needed

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Re: Show HN: TxtNet Browser – Browse the Web over SMS, No Wi-Fi/Mobile Data Needed

#21
I feel like this would be a perfect use case for Chat GPT (with something like the now removed web browsing plugin).

Instead of sending the whole HTML page, the user could request just the information they want. You could even instruct Chat GPT to use abbreviations and shorter words as much as possible.

This could even go through one of these extremely long-range but low-bitrate radio standards to provide web access to literally the whole world.

Re: Show HN: TxtNet Browser – Browse the Web over SMS, No Wi-Fi/Mobile Data Needed

#22

It looks like HN successfully killed the server, I'm on my way to investigate. Thanks all (:

Have you considered using T-Mobile's WebDigits ( https://webdigits.t-mobile.com ), AT&T NumberSync for computer or whatever Verizon and other carriers have to offer for handling SMS on a computer perchance?

You could also use multiple phone numbers to send SMS to avoid SMS ratelimiting. FYI most carriers consider Person to Person messaging to be below 1 message per minute and run between 40% inbound to 60% inbound messages.

One thing to watch out for is some carriers like Cellcom if I recall sell unlimited texting plans that actually have a 20,000 message cap then $0.01 per message thereafter. A cousin of mine hit this about a decade ago as she was part of many MMS groups.

Re: Show HN: TxtNet Browser – Browse the Web over SMS, No Wi-Fi/Mobile Data Needed

#23
post #20

Isn't SMS a more expensive transport usually? Wherever I've seen paid and limited SMS, they were ridiculously expensive for the amount of data transferred (e.g. in Indonesia). Do you have a specific "target market" in mind, with cheap / unlimited SMS but censored internet access? E.g. China, Russia, Turkey?

True here in India as well. The cheapest pack offers 2GB data/ day and 100 SMS/ day for 3.5 USD per month

Re: Show HN: TxtNet Browser – Browse the Web over SMS, No Wi-Fi/Mobile Data Needed

#24
What about something more general and even more text-based, like "Execute Console/Commandline Programs over SMS".

Edit: What I mean is sending text commands to a restricted shell, i.e., program launcher, over SMS. Then returning the console text output from the server over SMS to the Android user.

Re: Show HN: TxtNet Browser – Browse the Web over SMS, No Wi-Fi/Mobile Data Needed

#25

It looks like HN successfully killed the server, I'm on my way to investigate. Thanks all (:

The server is back up and running - it turns out that CDMA networks continue to be an issue, and the queue of WebViews was being depleted as any WebView that received a malformed string failed. I fixed that, but the string should never have made it all the way to the webview in the first place, so that was also fixed.

Re: Show HN: TxtNet Browser – Browse the Web over SMS, No Wi-Fi/Mobile Data Needed

#26
post #22

It looks like HN successfully killed the server, I'm on my way to investigate. Thanks all (:

Have you considered using T-Mobile's WebDigits ( https://webdigits.t-mobile.com ), AT&T NumberSync for computer or whatever Verizon and other carriers have to offer for handling SMS on a computer perchance? You could also use multiple phone numbers to send SMS to avoid SMS ratelimiting. FYI most carriers consider Person to Person messaging to be below 1 message per minute and run between 40% inbound to 60% inbound me…

Those look like interesting options, and they're surely be more reliable than relying on the phone's own SMS capabilities, but I wasn't able to find a public API for any of those services. As far as SMS rate limiting goes, I agree that multiple numbers would be good. Perhaps if there's a demand for it, I can create a feature that switches numbers from the database on the fly as it notices some are hung up.

>FYI most carriers consider Person to Person messaging to be below 1 message per minute and run between 40% inbound to 60% inbound messages.

Yep, I've read into that a little. I wasn't able to find anything explicitly forbidding a service like this in their terms, although there's a lot of legal documents that carriers have so I could have missed it. I read that you should expect about 1 SMS/second on consumer carriers, but it seems like I'm able to get about 2-3 SMS/second in my testing.

I didn't know about carriers having an unlimited SMS threshold... I'll have to look into that, thanks for the heads up!

Re: Show HN: TxtNet Browser – Browse the Web over SMS, No Wi-Fi/Mobile Data Needed

#27

Nice! One small thing I noticed: it looks like you don't have compression turned up all the way. You might be able to save a lot of bandwidth if you use the most aggressive brotli settings for everything that's sent over SMS

I just ran some non-scientific tests with compression quality set to 11 (max), and these were the results:

frogfind.com - default: 3 messages :: new: 3 messages

lite.cnn.com - default: 43 messages :: new: 44 messages

text.npr.org - default: 8 messages :: new: 8 messages

"NFL Suspends 5 Players for Gambling" article: default: 15 messages :: new: 15 messages

Seems like either I haven't properly implemented the dictionary, or the default compression level is already set to max.

Re: Show HN: TxtNet Browser – Browse the Web over SMS, No Wi-Fi/Mobile Data Needed

#28

What about something more general and even more text-based, like "Execute Console/Commandline Programs over SMS". Edit: What I mean is sending text commands to a restricted shell, i.e., program launcher, over SMS. Then returning the console text output from the server over SMS to the Android user.

In theory, you could adapt this approach to whatever needs you have. I have heard people suggest implementing IP over SMS, setup as a local VPN. I would say the sky is the limit, but I think with how brittle, unreliable, and slow SMS is, IP over SMS would definitely be out of scope. If you wanted to make a quick jank solution to your problem, this app works with all HTTP GET requests. So, simply host a local webserver on your PC, have your server phone connected to the same Wi-Fi, and provide a text input box that will accept any command and append it to the url with a basic tag. Then the server can generate the output, and send the result back to you.

Re: Show HN: TxtNet Browser – Browse the Web over SMS, No Wi-Fi/Mobile Data Needed

#29
post #20

Isn't SMS a more expensive transport usually? Wherever I've seen paid and limited SMS, they were ridiculously expensive for the amount of data transferred (e.g. in Indonesia). Do you have a specific "target market" in mind, with cheap / unlimited SMS but censored internet access? E.g. China, Russia, Turkey?

I know for sure that what you're saying was true around 10 years ago. Once apps like WhatsApp began to gain popularity in some countries, though, I've seen a few examples of carriers allowing for unlimited SMS and switching to focus on charging for data, like what has happened in the US. But off the top of my head, I can't think of a specific example. I don't think that my ideal "target market" would need both cheap SMS and censored internet access; for me, those are two different applications. If your internet access is censored, even just a small amount of information could prove to be very useful. The other application is countries with cheap SMS plans but expensive data plans, which, like you pointed out, has a pretty limited application.
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