[BUG] [Android] Service Discovery start fail when using specific service type

[jeonghwan7]

Reproduction steps

Service Discovery start fail when using specific service type (_S9._sub._matterc._udp)

Hi, Service Discovery fail when using specific service type like _S9._sub._matterc._udp
without sub type (_matterc._udp) is working well.

It is mandatory function for just using manual pairing code and QR Code pairing.

Log is below
`02-22 10:01:54.414 D 31680 31680 NsdManagerServiceBrowser: Starting service discovering for _S9._sub._matterc._udp
.....
02-22 10:01:54.626 E 1039 15809 MDnsDS : Discover request 732 got an error from DNSServiceBrowse -65540
02-22 10:01:54.636 E 1590 2299 MDnsManager: Discover service failed.
02-22 10:01:54.636 E 1590 2299 MDnsManager: android.os.ServiceSpecificException: Unknown error -65540 (code -65540)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.os.Parcel.createExceptionOrNull(Parcel.java:3037)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.os.Parcel.createException(Parcel.java:3007)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.os.Parcel.readException(Parcel.java:2990)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.os.Parcel.readException(Parcel.java:2932)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.net.connectivity.android.net.mdns.aidl.IMDns$Stub$Proxy.discover(IMDns.java:269)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.net.connectivity.android.net.nsd.MDnsManager.discover(MDnsManager.java:107)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at com.android.server.NsdService.discoverServices(NsdService.java:818)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at com.android.server.NsdService.-$$Nest$mdiscoverServices(Unknown Source:0)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at com.android.server.NsdService$NsdStateMachine$EnabledState.processMessage(NsdService.java:314)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.net.connectivity.com.android.internal.util.StateMachine$SmHandler.processMsg(StateMachine.java:993)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.net.connectivity.com.android.internal.util.StateMachine$SmHandler.handleMessage(StateMachine.java:810)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.os.Handler.dispatchMessage(Handler.java:106)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.os.Looper.loopOnce(Looper.java:226)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.os.Looper.loop(Looper.java:313)
02-22 10:01:54.636 E 1590 2299 MDnsManager: at android.os.HandlerThread.run(HandlerThread.java:67)
02-22 10:01:54.636 E 1039 15809 MDnsDS : Stop used unknown requestId 732
02-22 10:01:54.637 E 1590 2299 MDnsManager: Stop operation failed.
02-22 10:01:54.637 E 1590 2299 MDnsManager: android.os.ServiceSpecificException: No such process (code 3)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.os.Parcel.createExceptionOrNull(Parcel.java:3037)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.os.Parcel.createException(Parcel.java:3007)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.os.Parcel.readException(Parcel.java:2990)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.os.Parcel.readException(Parcel.java:2932)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.net.connectivity.android.net.mdns.aidl.IMDns$Stub$Proxy.stopOperation(IMDns.java:323)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.net.connectivity.android.net.nsd.MDnsManager.stopOperation(MDnsManager.java:167)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at com.android.server.NsdService.stopServiceDiscovery(NsdService.java:822)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at com.android.server.NsdService.-$$Nest$mstopServiceDiscovery(Unknown Source:0)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at com.android.server.NsdService$NsdStateMachine$EnabledState.processMessage(NsdService.java:322)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.net.connectivity.com.android.internal.util.StateMachine$SmHandler.processMsg(StateMachine.java:993)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.net.connectivity.com.android.internal.util.StateMachine$SmHandler.handleMessage(StateMachine.java:810)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.os.Handler.dispatchMessage(Handler.java:106)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.os.Looper.loopOnce(Looper.java:226)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.os.Looper.loop(Looper.java:313)
02-22 10:01:54.637 E 1590 2299 MDnsManager: at android.os.HandlerThread.run(HandlerThread.java:67)
02-22 10:01:54.638 W 31680 31780 NsdManagerServiceBrowser: Failed to start discovery service _S9._sub._matterc._udp: 0

`

Bug prevalence

everytime

GitHub hash of the SDK that was being used

5f058f9

Platform

android

Platform Version(s)

No response

Anything else?

No response

[jeonghwan7]

It seems that Android NsdService don't support dns sd subtype(_S9._sub.)

Actually, I have tried to another way to resolve this issue.
For example

1. I try to find "_matterc._udp"
2. If device found, ㅑ checked if it could be processed within the second found callback, but it seems impossible because the Service Info object does not contain a service type.

@Override public void onServiceFound(NsdServiceInfo serviceInfo) { Log.i(TAG, "Found service '" + serviceInfo.getServiceName() + "' service info "+serviceInfo.getServiceType() + "service "+serviceInfo); serviceNameList.add(serviceInfo.getServiceName()); }

The Log is below There is no sub type in there.

02-28 10:40:03.642 I 12630 12922 NsdManagerServiceBrowser: Found service ECA649FB2ECBE143 service info _matterc._udp.service name: ECA649FB2ECBE143, type: _matterc._udp., host: null, port: 0, network: 105, txtRecord: