Response code 415 (Unsupported Media Type) on Zeebe REST completeUserTask

[aim-dot-antares]

Hello!

Zeebe StandaloneBroker v8.5.0
c8 -

Problem!

const zeebeRest = c8.getZeebeRestClient();
var params = {
userTaskKey: key
}
zeebeRest.completeUserTask(params);

It's not work!

Error
err: {
"type": "HTTPError",
"message": "Response code 415 (Unsupported Media Type) (request to http://rms:8080/v1/user-tasks/2251799813691816/completion)",
"stack":
HTTPError: Response code 415 (Unsupported Media Type) (request to http://rms:8080/v1/user-tasks/2251799813691816/completion)
at gotBeforeErrorHook (D:\SOURCE\RMS\node_modules@camunda8\sdk\dist\lib\GotHooks.js:26:17)
at Request._error (D:\SOURCE\RMS\node_modules\got\dist\source\core\index.js:1198:31)
at D:\SOURCE\RMS\node_modules\got\dist\source\core\index.js:1284:23
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
"name": "HTTPError",
"code": "ERR_NON_2XX_3XX_RESPONSE",
"timings": {
"start": 1718237290195,
"socket": 1718237290196,
"lookup": 1718237290197,
"upload": 1718237290224,
"response": 1718237290399,
"end": 1718237290403,
"phases": {
"wait": 1,
"dns": 1,
"tcp": 27,
"request": 0,
"firstByte": 175,
"download": 4,
"total": 208
}
},
"statusCode": 415,
"source": [
"Error",
" at gotErrorHandler (D:\SOURCE\RMS\node_modules\@camunda8\sdk\dist\lib\GotHooks.js:15:11)",
" at Array. (D:\SOURCE\RMS\node_modules\got\dist\source\create.js:67:24)",
" at iterateHandlers (D:\SOURCE\RMS\node_modules\got\dist\source\create.js:89:50)",
" at got (D:\SOURCE\RMS\node_modules\got\dist\source\create.js:117:20)",
" at got. [as post] (D:\SOURCE\RMS\node_modules\got\dist\source\create.js:224:42)",
" at D:\SOURCE\RMS\node_modules\@camunda8\sdk\dist\zeebe\zb\ZeebeRESTClient.js:63:46",
" at process.processTicksAndRejections (node:internal/process/task_queues:95:5)"
]
}

But FETCH Working!

var params = {
method: 'POST',
headers: {'Content-Type': 'application/json;charset=utf-8'},
body: JSON.stringify({variables: {}, action: "string"})
}
await fetch("http://rms:8080/v1/user-tasks/" + key + "/completion", params);

I think it's a problem with the HTTP headers.

[jwulf]

Thanks for reporting this @aim-dot-antares.

Any chance that you can provide me with a repo with the configuration files and a startup script so that I can reproduce this locally?

[aim-dot-antares]

Hi @jwulf

I made a test private repository.
Sent an invitation. zeebe-test-rest
And I checked this project locally.
The error is also reproduced locally

[jwulf]

Released in 8.6.5.

The issue was that headers were not being added to REST methods, so they were missing the authorization header and the content encoding header.

[jwulf]

The unit test gets the usertaskId for the call from the Tasklist API.

There are plans for other methods - see here: camunda/issues#789