philippe44
commented
8 months ago Thanks for the thank you 😄
Now, to your issue... well, UPnP is probably the biggest cluster f... you can ever see in term of standardization and lack of compliance and most company do whatever they do, especially device vendors who think that software happens magically (end of rant).
What you likely experience is something that I've seen a few times with faulty devices: UPnP uses HTTP to grab the audio data doing a classical "GET". Now, in HTTP if you know the content length of your file, you can put it in your answer, but it's optional and you might not know it. In fact, HTTP 1.1 has a special mode to handle unknown length (chunked-encoding). In my case, because I recode the audio, I don't know in advance the length so I'm silent about it.
Now, not knowing length might also means it is a live stream and UPnP adds special flags in addition to HTTP to inform the player of what it is receiving. The reason (yes, I'm getting there) is that pausing alive stream might not make sense and this let players decide if they want to allow that or not.
Now, when you combine these options together, many players are a mess and can't handle these properly. They think that no content length means live and don't pause. That does not mean that I don't have bugs or I missed something in my own app, but from experience the lack of pause is often a player issue.
So you can try different things.
1- change HTTP modes between -3, -2, -1 or 0. Try -3 first (chunked encoding). Then try 0 where I will always add a length, even if it is fake. It sometimes works. -2 adds length if known and -1 never adds length, so these are not for you
2- play with these DLNA flags that express server's capabilities and sometimes this makes the difference. You can have your own in the xml config file you'd create. The syntax is the following
/* DLNA.ORG_FLAGS, padded with 24 trailing 0s
* 8000 0000 31 senderPaced
* 4000 0000 30 lsopTimeBasedSeekSupported
* 2000 0000 29 lsopByteBasedSeekSupported
* 1000 0000 28 playcontainerSupported
* 800 0000 27 s0IncreasingSupported
* 400 0000 26 sNIncreasingSupported
* 200 0000 25 rtspPauseSupported
* 100 0000 24 streamingTransferModeSupported
* 80 0000 23 interactiveTransferModeSupported
* 40 0000 22 backgroundTransferModeSupported
* 20 0000 21 connectionStallingSupported
* 10 0000 20 dlnaVersion15Supported
*
* Example: (1 << 24) | (1 << 22) | (1 << 21) | (1 << 20)
* DLNA.ORG_FLAGS=0170 0000[0000 0000 0000 0000 0000 0000] // [] show padding
*/There is the "flow" version and the regular version, I assume you don' t use flow mode. To better understand these, Google and ChatGPT are your friends. I'm sorry I can't tell you more, but it's really a jungle here. Now, if you can make it work, I'd be interested because it gives me opportunity to figure out either my own mistakes or find a better compatibility.
Just you can see that in the "flow" mode, I use "c7..." which means I set that the beginning of the stream and end of the stream are moving which means a live stream (flow is a single continuing stream for all tracks). In regular (non-flow) mode, I'm not setting these bits "17..." so the player should know that the stream can be paused... Especially, you can remove the "streamingTransferModeSupported" flags (set value to 07...) to see what happens (although your player explicitly asks for streaming, so we'll see).
trilame
Hello, I'm running SpotConnect, on MacOS 13.5.1, simply with the command
./spotupnp-macos.It correctly discovers locally my player. I then go to another device (an iPhone) to launch Spotify, choose the player (JBL OnBeat Air01D9BD+) and starts playing. If I choose another track, it changes instantly.
But if I press pause on the device controlling Spotify (in my example, the iPhone), on the iPhone screen the state of the button is pause, but the music keeps playing on the JBL OnBeat Air01D9BD+. I do nothing and wait, for about 30 seconds, and it eventually pauses the music. If I press play again, it starts again directly.
Below is a log of such scenario. I'm not sure what's wrong: I also tried with the credentials (
./spotupnp-macos -x config.xml -j -I), but the result is the same.Also taking the opportunity to say thank you for all the work!