Tau: [BUG] PlatformException(ERR_UNKNOWN, ERR_UNKNOWN, Prepare failed.: status=0x1)

[PabloduPontavice]

Flutter Sound Version :

flutter_sound 6.1.4

• Result of the command "flutter pub deps | grep flutter_sound"
  (very important):

|-- flutter_sound 6.1.4
|   |-- flutter_sound_platform_interface 1.0.0

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Severity

Player won't play

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Platforms you faced the error

• Android Emulator (Pixel_2_API_29)

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Logs

(This is very important. Most of the time we cannot do anything if we do not have information on your bug):

Exception has occurred.
PlatformException (PlatformException(ERR_UNKNOWN, ERR_UNKNOWN, Prepare failed.: status=0x1))

E/flutter (23278): [ERROR:flutter/lib/ui/ui_dart_state.cc(166)] Unhandled Exception: PlatformException(ERR_UNKNOWN, ERR_UNKNOWN, Prepare failed.: status=0x1)
E/flutter (23278): #0      StandardMethodCodec.decodeEnvelope 
package:flutter/…/services/message_codecs.dart:572
E/flutter (23278): #1      MethodChannel._invokeMethod 
package:flutter/…/services/platform_channel.dart:161
E/flutter (23278): <asynchronous suspension>
E/flutter (23278): #2      MethodChannel.invokeMethod 
package:flutter/…/services/platform_channel.dart:334
E/flutter (23278): #3      MethodChannelFlutterSoundPlayer.invokeMethod 
package:flutter_sound_platform_interface/method_channel_flutter_sound_player.dart:168
E/flutter (23278): #4      MethodChannelFlutterSoundPlayer.startPlayer 
package:flutter_sound_platform_interface/method_channel_flutter_sound_player.dart:237
E/flutter (23278): #5      FlutterSoundPlayer.startPlayer.<anonymous closure> 
package:flutter_sound/src/flutter_sound_player.dart:551
E/flutter (23278): <asynchronous suspension>
E/flutter (23278): #6      FlutterSoundPlayer.startPlayer.<anonymous closure> (package:flutter_sound/src/flutter_sound_player.dart)
E/flutter (23278): #7      BasicLock.synchronized 
package:synchronized/src/basic_lock.dart:32
E/flutter (23278): #8      FlutterSoundPlayer.startPlayer 
package:flutter_sound/src/flutter_sound_player.dart:533
E/flutter (23278): #9      PlayerScreenState._play 
[my file where I call "await _player.startPlayer(fromURI: url)"]
E/flutter (23278): <asynchronous suspension>
E/flutter (23278): #10     _PlayButton.build.<anonymous closure> 
[my file where onPressed is defined for the playback button]
E/flutter (23278): #11     _InkResponseState._handleTap 
package:flutter/…/material/ink_well.dart:992
E/flutter (23278): #12     _InkResponseState.build.<anonymous closure> 
package:flutter/…/material/ink_well.dart:1098
E/flutter (23278): #13     GestureRecognizer.invokeCallback 
package:flutter/…/gestures/recognizer.dart:184
E/flutter (23278): #14     TapGestureRecognizer.handleTapUp 
package:flutter/…/gestures/tap.dart:524
E/flutter (23278): #15     BaseTapGestureRecognizer._checkUp 
package:flutter/…/gestures/tap.dart:284
E/flutter (23278): #16     BaseTapGestureRecognizer.handlePrimaryPointer 
package:flutter/…/gestures/tap.dart:219
E/flutter (23278): #17     PrimaryPointerGestureRecognizer.handleEvent 
package:flutter/…/gestures/recognizer.dart:477
E/flutter (23278): #18     PointerRouter._dispatch 
package:flutter/…/gestures/pointer_router.dart:78
E/flutter (23278): #19     PointerRouter._dispatchEventToRoutes.<anonymous closure> 
package:flutter/…/gestures/pointer_router.dart:124
E/flutter (23278): #20     _LinkedHashMapMixin.forEach  (dart:collection-patch/compact_hash.dart:377:8))
E/flutter (23278): #21     PointerRouter._dispatchEventToRoutes 
package:flutter/…/gestures/pointer_router.dart:122
E/flutter (23278): #22     PointerRouter.route 
package:flutter/…/gestures/pointer_router.dart:108
E/flutter (23278): #23     GestureBinding.handleEvent 
package:flutter/…/gestures/binding.dart:220
E/flutter (23278): #24     GestureBinding.dispatchEvent 
package:flutter/…/gestures/binding.dart:200
E/flutter (23278): #25     GestureBinding._handlePointerEvent 
package:flutter/…/gestures/binding.dart:158
E/flutter (23278): #26     GestureBinding._flushPointerEventQueue 
package:flutter/…/gestures/binding.dart:104
E/flutter (23278): #27     GestureBinding._handlePointerDataPacket 
package:flutter/…/gestures/binding.dart:88
E/flutter (23278): #28     _rootRunUnary  (dart:async/zone.dart:1206:13))
E/flutter (23278): #29     _CustomZone.runUnary  (dart:async/zone.dart:1100:19))
E/flutter (23278): #30     _CustomZone.runUnaryGuarded  (dart:async/zone.dart:1005:7))
E/flutter (23278): #31     _invoke1  (dart:ui/hooks.dart:267:10))
E/flutter (23278): #32     _dispatchPointerDataPacket  (dart:ui/hooks.dart:176:5))
E/flutter (23278):

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Describe the bug
My code worked with url's not containing colons or spaces but here I am using a url that contains a colon.

I saw a suggestion (comment https://github.com/dooboolab/flutter_sound/issues/140#issuecomment-538737638) to replace these characters with underscores but this did not work for me as the location of the colon character is in between the IP address and port number.

Format of URL I am using: "http://[IP_ADDRESS]:4001/[REST_OF_URL]". The rest of the url does not contain any colons or spaces.
Just to clarify I did try "http://[IP_ADDRESS]_4001/[REST_OF_URL]" but this did not work.

If this is not a bug and it is the intended outcome then please document this.

If there is no "real solution" to this problem then any work-around to this problem would be greatly appreciated.

Please let me know if there's any more information you need.

[Larpoux]

It seems like a bug in Flutter Sound.

"http://[IP_ADDRESS]:4001/[REST_OF_URL]"

is a perfect URL.

[Larpoux]

Which Codec do you pass to startPlayer() ?
Are you sure that this is the correct Codec that your URL point to ?

[PabloduPontavice]

Which Codec do you pass to startPlayer() ?
Are you sure that this is the correct Codec that your URL point to ?

I did not explicitly pass a Codec parameter to startPlayer() but now I just did and I'm getting the same error.
The Codec I'm passing is Codec.mp3 and I am sure that this is the correct Codec that my URL is pointing too.

[Larpoux]

Does it work when you call this address from a Web Browser, on your Android device ?

[PabloduPontavice]

Does it work when you call this address fro a Web Browser, on your Android device ?

Just tried and yes it does

[Larpoux]

Maybe a problem with the authorization missing for your App doing a call on port 4001.
I am not sure ...

Unfortunately I have not much time now to help you.

[PabloduPontavice]

Maybe a problem with the authorization missing for your App doing a call on port 4001.
I am not sure ...

Unfortunately I have not much time now to help you.

I will look into that. Thanks and please let me know if you think of anything else.

[Larpoux]

Sure.
Good luck

[Larpoux]

Is your URL pointing to a server doing Streaming ? Or this is just the address or a remote mp3 file ?

[Larpoux]

In other words : when you call your address from a Web Browser, does it play the song, or does it download your mp3 ?

[PabloduPontavice]

In other words : when you call your address from a Web Browser, does it play the song, or does it download your mp3 ?

It plays the song

[PabloduPontavice]

I managed to get it to work by adding android:usesCleartextTraffic="true" to the application tag in AndroidManifest.xml.
Found the solution here: https://github.com/flutter/flutter/issues/30368#issuecomment-480300618 if anyone needs more details.
Since this solves it I'm closing the issue.

[Larpoux]

Congratulations. You will probably save time to others developers 👍