Multiple port support for --forwardPort. (already implemented, ready to pull)

[emanuele-scarsella]

I was developing an app with capacitor that should communicate with two back-and servers developed in the same monorepo, when I went to test the app I found myself in the awkward situation where while I can test the web interface whit live reloading, there seems to be no way to have both live reload and multiple server port forwarding at the same time (or at the very least, not without re-defining my laptop IP address address every time it changes).

The reason being the cap run android only accepts one parameter as --forwardPort, but by looking at the code it become instantly clear that implementing multiple port forwarding really is a piece of cake since native-run already supports multiple --forward arguments.

It's so easy in fact that I forked the project and implemented it by changing just 3 lines of code with this commit.

The good things about this new features are:

• It's back compatible with the previous interface.
• It's implementation requires minimal changes.
• It makes it very easy to work with local servers without specifying external IPs.

But even if I consider this change to be very trivial, that's still a change in the cli interface, so I thought it might be wiser to open a discussion and get some feedback before making a potentially unwanted pull request especially since there are already 49 open pull requests.

[emanuele-scarsella]

In the meanwhile, if you need this feature a I do, you can use patch-package downloading this patches.zip.

To apply it simply decompress the zip file, copy the patches folder in your repo and then follow the patch-package set-up guide.
Then by running npx patch-package you can now forward multiple ports with this syntax:

npx cap run android -l --external --forwardPorts 8080:8080 9000:9000

You are welcome.