Responses never arrive at clients

[Arrigi]

go-librespot is discovered succesfully by spotify players and
commands are received properly by go-librespot

but the clients (I've tested macos + ios) never seem to receive a response. This does create weird situations where go-librespot may actually play the requested song and sometimes even update volume, but the client still believes it's connecting. It eventually times out and believes nothing is playing, while I can hear music.

Logging repeatedly shows

DEBU[0033] put state request failed with status 400: Missing payload 
DEBU[0035] put state request failed with status 400: Missing payload 
ERRO[0035] failed put state after update                 error="put state request failed with status 400: Missing payload"

I can't figure out what this is trying to access or where this http400 would be coming from, if it even is one?

I've seen this issue all 0.5.x versions

[devgianlu]

What is failing is this call:

go-librespot/spclient/spclient.go

Line 164 in 0dd19a1

func (c *Spclient) PutConnectState(ctx context.Context, spotConnId string, reqProto *connectpb.PutStateRequest) error {

I have never seen it fail with that error, almost like it doesn't have a body, but that seems unlikely. Are you still having this issue? Can you describe how to reproduce it?