Cannot terminate while loops in blocking calls to `open()`

[halee88]

When launching a server, all plugins' losc:open() functions create an infinite loop without any way to exit it via code. Instead a user must forcefully terminate the lua runtime. This makes the server functionality impossible to embed in more complex applications.

A solution would be to enforce a 'non-blocking' requirement on each plugin and adapt the high-level api as necessary (see #32). Backwards compatibility with existing 'blocking' usages could be accomplished by adding a default blocking=true param to the losc:open() function

[davidgranstrom]

Yes, the plugins included are more or less "examples" on implementation and could definitely be improved for more use-cases. My original idea was that it would be up to the plugin if it would block or not on losc:open(), the function signature can vary depending on the plugin implementation so a blocking flag could be implemented for a specific plugin.

Here is an example of a non-blocking implementation using libuv: https://github.com/davidgranstrom/osc.nvim/blob/main/lua/osc/udp-transport.lua it is callback based though, but I like the idea in #32 of an additional losc:poll() function to handle non-callback based implementations.

[Simon-L]

Hello! I made a quick attempt at adding the :poll() method in PR #34 :)

Interestingly I needed that feature yesterday and it's currently being discussed here!