Reading Response Headers

[Juan_Antonio]

Hello,

I don't know if this will work for you ... in this discussion there is an extension called: com.KIO4_Terminal.aix

Using LINUX commands in App Inventor. Extension

Hello friends, with this extension we are going to use some LINUX commands. com.KIO4_Terminal.aix With this block we can copy files from the assets to SdCard. This block only works with the compiled app (Build). It needs AskForPermission = WRITE_EXTERNAL_STORAGE [extension_terminal3] [shell_permiss] oooooooooooooooOOOOOOOOOOOOOoooooooooooooo With this block we can copy files from the assets to the internal cache directory of the same application. We will get the address of the accessi…

With this extension you can use many LINUX commands
Some devices have the curl command.
Can you test if this instruction works for you?
Terminal.Run
commandLine: curl -I https://www.keycdn.com

from Popular curl Examples - KeyCDN Support