Feature request: Add the HTTP protocol

[WeihuaGu]

Since what is sent is JSON, it's easy to send the JSON to the specified path.

[umer0586]

Hi, thanks for the suggestion!

HTTP is more of a request-response protocol, where every request expects a response. For DroidPad, that doesn't really fit the use case, since each interaction on the control pad would have to wait for a response. That could make things laggy and less smooth for real-time controls.

[imsamuka]

I never worked with WebSockets, but according to the wikipedia they are very compatible HTTP, so potentially you can already make a web server that goes through port 80 and 443, and acts pretty much exactly like a HTTP server. 🤔

[WeihuaGu]

HTTP/2 introduced connection multiplexing, so it can reuse TCP connections. It depends on the server that can only returns the simplest 204 status code.
Indeed, when it is applied to key interactions similar to those of a gamepad, the request - response process may seem to cause a delay. However, if it is not used for such highly rapid interactions, like those implemented by a remote control, this delay is acceptable.

[umer0586]

WebSocket is perfect for real-time stuff since it’s full-duplex and keeps everything flowing over a single TCP connection. Unlike HTTP, it’s not stuck in that request/response cycle. For something like a button press, waiting for a response is fine, but not when you’re dealing with sliders or joysticks. I might try to add HTTP support for simpler use cases but not 100% sure yet.

[WeihuaGu]

There might be another suggestion. That is to include the timestamp in the sent JSON. This way, it will be possible to compare the sequence of key presses.