5 ms·

Probably terrible data point, but running "nc -l -p 80" within the iSH shell app on iOS opens port 80 and is reachable from a desktop machine in the local netwo

Probably terrible data point, but running "nc -l -p 80" within the iSH shell app on iOS opens port 80 and is reachable from a desktop machine in the local network. iSH has requested the "Local network" permission at some point.

jeroenhd 3y ago
That's interesting, thanks for the information! Refreshing to see Apple provide to be the less restrictive app platform!
- LeoNatan25 3y ago
  Even if you run the server, it will die if the app goes to background or the screen turns off. Hardly practical. Just because a port is open does not mean it’s “less restrictive”.
  - dividuum 3y ago
    I apologize in advance: 'cat /dev/location > /dev/null & python -m SimpleHTTPServer 80'. Totally crude but works, even when turning off the display.
    - LeoNatan25 3y ago
      This just slightly extends the background runtime, not allow indefinite background execution. I don't think ish has the navigation background mode (or audio for that matter) enabled, as it won't be allowed by Apple.
  - NavinF 3y ago
    There are workarounds for that: https://developer.apple.com/documentation/xcode/configuring-background-execution-modes https://developer.apple.com/documentation/xcode/configuring-... Eg if that terminal app is capable of playing audio, it can play silence to keep the app alive forever in the background. I don't mean to imply that this is practical. Any solution would still destroy battery life.
    - mcny 3y ago
      What I would like to see is devices being able to run at least to some extent purely off of the wall. My use case: I plug in an old phone into the wall, a 65W Thinkpad charger to be precise. The input for the Thinkpad is USB type C which is the same as my ZTE phone. I connect the USB C cable, attach my spicy pillow of a battery (it is removable), wait until the device powers up, and remove the spicy pillow from the phone. The phone stays on. What I would like to see instead is some way for phones and laptops to work directly off of the wall, not charging or using the battery at all once it is done charging, without me having to physically remove the battery. I thought this is how laptops used to work but I am not an expert. Phones I am positive do not work like this for some reason. I believe one reason is the camera flash. The camera flash requires more oomph (very technical term) than the wall can deliver. I'm guessing that based on a single anecdote that I once tried to use the flash without a battery and the phone rebooted. I guess the main gist of this comment is to say I'd like to see better thought go into making battery more durable so you can use a phone, connected to the wall for ten years if you wanted to. I am positive that if we could use the phone off the wall without constantly charging and discharging the battery, we would be able to eliminate most cases of spicy pillow.
      - NavinF 3y ago
        > not charging or using the battery at all once it is done charging, without me having to physically remove the battery Most flagship devices already do this. They automatically enter kiosk mode after being plugged in for a few days which eliminates the spicy pillow problem by keeping battery voltage significantly lower than normal. Eg https://support.apple.com/en-gu/HT208710 https://support.apple.com/en-gu/HT208710 > I thought this is how laptops used to work Transients are a problem for laptops and desktops too. Eg: - Macbooks go into limp mode by asserting PROCHOT when the battery is <10% (or disconnected or high internal resistance) regardless of whether the laptop is plugged in. If they didn't, a sudden increase in power usage would cause enough voltage sag to reset the machine or cause data corruption. See https://apple.stackexchange.com/questions/380493/cpu-throttling-on-macbook-with-bad-battery-and-catalina https://apple.stackexchange.com/questions/380493/cpu-throttl... - An RTX 3090 draws only 350W, but transients are often double that. A lotta people with weak PSUs and aggressive OCP had random reboots and bluescreens until they upgraded their PSU. The newer RTX 4090 has a better VRM which causes smaller transients so it can work with a smaller PSU despite having a 450W TDP.
Spooky23 3y ago
You can also use it with Tailscale (or other VPN) to make it reachable to other hosts in the tailnet.

jeroenhd 3y ago

That's interesting, thanks for the information! Refreshing to see Apple provide to be the less restrictive app platform!

LeoNatan25 3y ago
Even if you run the server, it will die if the app goes to background or the screen turns off. Hardly practical. Just because a port is open does not mean it’s “less restrictive”.
- dividuum 3y ago
  I apologize in advance: 'cat /dev/location > /dev/null & python -m SimpleHTTPServer 80'. Totally crude but works, even when turning off the display.
  - LeoNatan25 3y ago
    This just slightly extends the background runtime, not allow indefinite background execution. I don't think ish has the navigation background mode (or audio for that matter) enabled, as it won't be allowed by Apple.
- NavinF 3y ago
  There are workarounds for that: https://developer.apple.com/documentation/xcode/configuring-background-execution-modes https://developer.apple.com/documentation/xcode/configuring-... Eg if that terminal app is capable of playing audio, it can play silence to keep the app alive forever in the background. I don't mean to imply that this is practical. Any solution would still destroy battery life.
  - mcny 3y ago
    What I would like to see is devices being able to run at least to some extent purely off of the wall. My use case: I plug in an old phone into the wall, a 65W Thinkpad charger to be precise. The input for the Thinkpad is USB type C which is the same as my ZTE phone. I connect the USB C cable, attach my spicy pillow of a battery (it is removable), wait until the device powers up, and remove the spicy pillow from the phone. The phone stays on. What I would like to see instead is some way for phones and laptops to work directly off of the wall, not charging or using the battery at all once it is done charging, without me having to physically remove the battery. I thought this is how laptops used to work but I am not an expert. Phones I am positive do not work like this for some reason. I believe one reason is the camera flash. The camera flash requires more oomph (very technical term) than the wall can deliver. I'm guessing that based on a single anecdote that I once tried to use the flash without a battery and the phone rebooted. I guess the main gist of this comment is to say I'd like to see better thought go into making battery more durable so you can use a phone, connected to the wall for ten years if you wanted to. I am positive that if we could use the phone off the wall without constantly charging and discharging the battery, we would be able to eliminate most cases of spicy pillow.
    - NavinF 3y ago
      > not charging or using the battery at all once it is done charging, without me having to physically remove the battery Most flagship devices already do this. They automatically enter kiosk mode after being plugged in for a few days which eliminates the spicy pillow problem by keeping battery voltage significantly lower than normal. Eg https://support.apple.com/en-gu/HT208710 https://support.apple.com/en-gu/HT208710 > I thought this is how laptops used to work Transients are a problem for laptops and desktops too. Eg: - Macbooks go into limp mode by asserting PROCHOT when the battery is <10% (or disconnected or high internal resistance) regardless of whether the laptop is plugged in. If they didn't, a sudden increase in power usage would cause enough voltage sag to reset the machine or cause data corruption. See https://apple.stackexchange.com/questions/380493/cpu-throttling-on-macbook-with-bad-battery-and-catalina https://apple.stackexchange.com/questions/380493/cpu-throttl... - An RTX 3090 draws only 350W, but transients are often double that. A lotta people with weak PSUs and aggressive OCP had random reboots and bluescreens until they upgraded their PSU. The newer RTX 4090 has a better VRM which causes smaller transients so it can work with a smaller PSU despite having a 450W TDP.

Spooky23 3y ago

You can also use it with Tailscale (or other VPN) to make it reachable to other hosts in the tailnet.