• variable: settings.system.luaSupportedEventClasses
• Ginga CCWS: /dtv/platform-capabilities

problem: This affects all devices regardless of brand, allowing for the indication of unsupported working features while also claiming support for a non-existent feature in the middleware. (Samsung and LG are confirmed)
solution: Anything that doesn't crash should be tested instead of asking support.

problem: Some Samsung television models from 2021 onwards have the behavior of returning the TCP class to the host with IP even if you have passed a domain, when working with multiple requests at the same time this makes it impossible to identify the origin of the request. (confirmed)
solution: The first request made with a domain is used to check for the existence of this behavior. When detected, each new domain is blocked by multiple requests to make a request just to resolve the DNS. After that, it is cached to ensure there is an understanding between the connection ID, host and IP.

• https://github.com/gamelly/gly-engine/issues/155

problem: LGs have incremental connection IDs starting from 0. There appears to be an issue where posting a disconnect event with ID 0 in the TCP class of the Ginga implemented by LG causes the application to crash. It is not possible to capture this with pcall in Lua. (not confirmed)
solution: The engine's legacy http protocol already chose to make a first separate request to test DNS and Network, the alternative was to just comment on this first connection, it is up to the server to disconnect the socket.

• https://github.com/TeleMidia/ginga/issues/190
• https://github.com/TeleMidia/ginga/issues/173

problem: For some mysterious reason, the Telemidia Ginga simulator has swapped the pressed and released events. However, this issue only occurs in the ginga (CLI) command and not in gingagui which uses the same codebase but with an interface. (confirmed)
solution: For testing purposes with the engine (CLI), there is the --telemedia190 building flag, which compiles the engine with the swapped events. This can be useful when combined with the --run flag to immediately test after the build.

problem: the lua collectgarbage() function causes the black screen.
solution: dont use it.

problem: In all Samsung models, when painting a rectangle with an opaque color in front of a PNG image, the image is clipped and ends up with 100% transparency. This behavior appears to be the result of a misconfigured blend mode. (confirmed)
solution: use another image of a solid square in the desired color if possible, or a color similar to the PNG that is not opaque.

problem: Old sony televison (no longer sold in brazil) do not recognize percentages in the region parameter when associeated with the descriptor used by a media with the source sbtvd-ts://video instead, they interprete it as pixel size, which causes the video to appear small on the screen. (not confirmed)
solution: pixel size should be used, or the sbtvd-ts://video media should be omitted, you are not required to declare if you dont want to interact with attributes.

problem: The activation process, triggered by an NCL event posted by Lua, is excessively complicated and not supported on Samsung and LG TVs at least until 2021. However, there is evidence that the encoding is correct, as the Telemedia simulator is working. (confirmed)
solution: not resolved.