DioError Connection closed while receiving data

[DongsubShin]

always thank you about wonderful package

I've used this package very well but since last week onvif.media.getProfile doesn't work suddenly

initialize, onvif.connect, everything worked well execpt get profile what should i do?

Thank you in advance

• also is there any workaround to get profile token from cctv hardward directly?

[faithoflifedev]

Hello @DongsubShin,

Can you let me know which version of the package you are using?

Also, if you enable debugging, and provide the debug info, that could also provide a clue as to the problem.

final onvif = await Onvif.connect(
      host: config['host'],
      username: config['username'],
      password: config['password'],
      logOptions: const LogOptions(
        LogLevel.debug,
        stackTraceLevel: LogLevel.error,
      )); 

"also is there any workaround to get profile token from cctv hardward directly?" - I'm not aware of any method to do this.

Based on the error info that you've provided, it looks like the device is having a problem responding to the request. Having the debug log could help trace the issue.

[DongsubShin]

/flutter (14197): 🐛 00:52:10.542713 DEBUG UI Loggy - Media - getProfiles I/flutter (14197): 🐛 00:52:10.550331 DEBUG UI Loggy - Onvif - URI: http://183.107.70.232:9440/onvif/device_service I/flutter (14197): 🐛 00:52:10.550574 DEBUG UI Loggy - Onvif - REQUEST: I/flutter (14197): <?xml version="1.0" encoding="UTF-8"?>admin8LeatWstS9/fkkdL8lALcyyJeas=8VTbbC7+J+2TWvgKMgUEHQ==2023-01-03T16:20:54.207102Z</s:Header><s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSc

/flutter (14197): ‼️ 00:52:10.612952 ERROR UI Loggy - Onvif - ERROR: I/flutter (14197): DioError [DioErrorType.other]: HttpException: Connection closed while receiving data, uri = http://183.107.70.232:9440/onvif/device_service

I've tested camera with other onvif apps(like Onvier). and it works well on those apps.

Flutter (Channel stable, 3.3.9, on macOS 12.3.1 21E258 darwin-arm, locale ko-KR) easy_onvif: ^2.0.13+7

Thanks :)

[faithoflifedev]

Hi @DongsubShin,

This looks like it might be a network related issue, but it's difficult to say with the limited information.

I recommend installing the cli utility with the command:

dart pub global activate easy_onvif

Further instructions are available in the README - https://github.com/faithoflifedev/easy_onvif/tree/main/bin#readme quick start section.

Then check to see if the results of the onvif device-management get-services command give the same IP address that you are using to connect to your Onvif device. The results of the command will look something like:

[
  {
    "Namespace": "http://www.onvif.org/ver10/device/wsdl",
    "XAddr": "http://192.168.1.182/onvif/device_service",
    "Version": {
      "Major": 16,
      "Minor": 12
    },
    "Capabilities": null
  },
  ...

If the value for "XAddr" (in the section with "Namespace": "http://www.onvif.org/ver10/device/wsdl") is different in terms of IP address, port or if it doesn't end in "/onvif/device_service" this could be the problem.

[LODYZ]

Hello,

I am getting a similar error during Onvif.connect or calling (onvif device-management get-device-information --log-level debug). I hope that it can be useful. Thank you

👻 14:13:50.294820 INFO UI Loggy - Onvif - initializing ... 🐛 14:13:50.297588 DEBUG UI Loggy - DeviceManagement - getSystemDateAndTime 🐛 14:13:50.313086 DEBUG UI Loggy - Onvif - URI: http://192.168.0.25/onvif/device_service 🐛 14:13:50.313162 DEBUG UI Loggy - Onvif - REQUEST: <?xml version="1.0" encoding="UTF-8"?></s:Body></s:Envelope> 🐛 14:13:50.555788 DEBUG UI Loggy - Onvif - RESPONSE: <?xml version="1.0" encoding="UTF-8"?>

NTPfalse131350202318131350202318 🐛 14:13:51.353807 DEBUG UI Loggy - DeviceManagement - getServices 🐛 14:13:51.359715 DEBUG UI Loggy - Onvif - URI: http://192.168.0.25/onvif/device_service 🐛 14:13:51.359803 DEBUG UI Loggy - Onvif - REQUEST: adminQdmgYLPlVkBOTJG2iJtH6c58VkI=MM8ww9A45bnJiu0lcqIMpg==2023-01-08T13:13:50.001088Ztrue 🐛 14:13:51.509302 DEBUG UI Loggy - Onvif - RESPONSE: http://www.onvif.org/ver10/device/wsdlhttp://192.168.0.25:80/onvif/device_service250http://www.onvif.org/ver10/media/wsdlhttp://192.168.0.25:80/onvif/device_service250http://www.onvif.org/ver10/events/wsdlhttp://192.168.0.25:80/onvif/device_service250http://www.onvif.org/ver20/imaging/wsdlhttp://192.168.0.25:80/onvif/device_service250http://www.onvif.org/ver10/deviceIO/wsdlhttp://192.168.0.25:80/onvif/device_service250http://www.onvif.org/ver20/analytics/wsdlhttp://192.168.0.25:80/onvif/device_service"false""true"250http://www.onvif.org/ver20/ptz/wsdlhttp://192.168.0.25:80/onvif/device_service250 🐛 14:13:51.530899 DEBUG UI Loggy - DeviceManagement - getCapabilities 🐛 14:13:51.531366 DEBUG UI Loggy - Onvif - URI: http://192.168.0.25/onvif/device_service 🐛 14:13:51.531394 DEBUG UI Loggy - Onvif - REQUEST: All ‼️ 14:13:51.720128 ERROR UI Loggy - Onvif - ERROR: DioError [DioErrorType.other]: HttpException: Connection closed while receiving data, uri = http://192.168.0.25/onvif/device_service Unhandled exception: Exception: DioError [DioErrorType.other]: HttpException: Connection closed while receiving data, uri = http://192.168.0.25/onvif/device_service Source stack: #0 DioMixin.fetch (package:dio/src/dio_mixin.dart:488:35) #1 DioMixin.request (package:dio/src/dio_mixin.dart:483:12) #2 DioMixin.post (package:dio/src/dio_mixin.dart:97:12) #3 Soap.send (package:easy_onvif/src/soap.dart:29:30) #4 Soap.retrieveEnvelope (package:easy_onvif/src/soap.dart:59:37) #5 DeviceManagement.getCapabilities (package:easy_onvif/src/device_management.dart:32:33) #6 Onvif.initialize (package:easy_onvif/src/onvif_base.dart:124:51) #7 Onvif.connect (package:easy_onvif/src/onvif_base.dart:87:5) #8 OnvifHelperCommand.initializeOnvif (package:easy_onvif/cmd/onvif_helper_command.dart:28:14) #9 OnvifGetDeviceInformationResponseDeviceManagementCommand.run (package:easy_onvif/cmd/onvif_device_management_command.dart:68:5) #10 CommandRunner.runCommand (package:args/command_runner.dart:209:13) #0 Soap.send (package:easy_onvif/src/soap.dart:47:7) #1 Soap.retrieveEnvelope (package:easy_onvif/src/soap.dart:59:26) #2 DeviceManagement.getCapabilities (package:easy_onvif/src/device_management.dart:32:22) #3 Onvif.initialize (package:easy_onvif/src/onvif_base.dart:124:28) #4 Onvif.connect (package:easy_onvif/src/onvif_base.dart:87:5) #5 OnvifHelperCommand.initializeOnvif (package:easy_onvif/cmd/onvif_helper_command.dart:28:14) #6 OnvifGetDeviceInformationResponseDeviceManagementCommand.run (package:easy_onvif/cmd/onvif_device_management_command.dart:68:5) #7 CommandRunner.runCommand (package:args/command_runner.dart:209:13)

[faithoflifedev]

@DongsubShin, @LODYZ, are you using "Onvif Rtsp Server for Android"?

If so, issue #3 covers the problem you're experiencing.

If not, I recommend testing if other Onvif libraries work with your device (preferably open source) and let me know which works, so I can look at how others have solved the problem.

The error you're seeing in this case is a network issue where the device is dropping the connection, at this point I think I could only offer additional help if I have access to a device that allows me to recreate the problem.

[LODYZ]

Hello @faithoflifedev, no i am not using "Onvif Rtsp Server for Android".

At the Moment i have only tried the camera with onvier (an app) and It works. I Will try other libraries and update you.

Thank you for all the support!

[faithoflifedev]

@LODYZ are you running your code in the Android emulator? If so, this solution might help - https://learnflutter.co/flutter-connection-closed-while-receiving-data/

[LODYZ]

Hello @faithoflifedev, I'm glad to inform you that I was able to resolve the device connection problems.

I encountered 3 problems:

1. "DioError Connection closed while receiving data" -> Solved using deviceManagement.getServices()
2. Envelope header null -> I edited envelope.dart and envelope.g.dart (I know I shouldn't do it manually)
3. Multicast null during getProfiles-> I edited audio_encoder (I know I shouldn't do it manually)

If you want I created a fork where you can see the changes. https://github.com/LODYZ/easy_onvif

Sorry if maybe that's not entirely correct but I'm new to the world of dart and onvif.

[faithoflifedev]

Hi @LODYZ,

Thanks for this. It's helped me identify a couple of bugs. It looks like there's a Media2 profile - https://www.onvif.org/ver20/media/wsdl/media.wsdl - supported by some cameras that I was unaware of, so the current code doesn't support it. I'll work on adding support in the coming days.

In digging in to this I found that all three of DeviceManagement, Media and Media2 use a GetServiceCapabilitiesResponse, which returns three different Capabilities objects. I'm currently only properly returning the Capabilities for DeviceManagement. So I'll try to correct this as well.

[faithoflifedev]

Hi @LODYZ, as an fyi, after a major overhaul of the code base, I've been able to create a new release that includes Media2 support, and fixes a number of bugs that I found in the original code base. I've published a pre-release version at easy_onvif v2.1.0-dev.3, I'd appreciate any feedback that you could offer.

[LODYZ]

Hi @faithoflifedev , thank you so much for all the work you are doing. I'll try the new release as soon as possibile.

[faithoflifedev]

https://github.com/faithoflifedev/easy_onvif/issues/32#issuecomment-1493346568 also deals with this issue.