InvalidHeaderValue Error in ADLS2 Blob trigger function C#

Question

I am trying to implement ADLS2 blob trigger function using Azure managed identity instead of using connection string

So here is my function

public class BlobTrigger
{
    [FunctionName("BlobTrigger")]
    public void Run([BlobTrigger("sample/my-directory/{name}", Connection = "MyConnection")]Stream myBlob, string name, ILogger log)
    {
        log.LogInformation($"C# Blob trigger function Processed blob\n Name:{name} \n Size: {myBlob.Length} Bytes");
    }
}

and here is the local.settings.json

{
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "UseDevelopmentStorage=true",
    "FUNCTIONS_WORKER_RUNTIME": "dotnet",
    //Blob trigger
    "MyConnection__blobServiceUri": "https://mystorageaccount.blob.core.windows.net",
    "MyConnection__queueServiceUri": "https://mystorageaccount.queue.core.windows.net"
  }
}

Here are the docs I was following

But when executing, I am getting below error

[2022-07-14T08:12:12.343Z] An unhandled exception has occurred. Host is shutting down.
[2022-07-14T08:12:12.346Z] Azure.Storage.Blobs: Service request failed.
[2022-07-14T08:12:12.348Z] Status: 400 (The value for one of the HTTP headers is not in the correct format.)
[2022-07-14T08:12:12.351Z] ErrorCode: InvalidHeaderValue
[2022-07-14T08:12:12.353Z]
[2022-07-14T08:12:12.355Z] Headers:
[2022-07-14T08:12:12.357Z] Server: Azurite-Blob/3.16.0
[2022-07-14T08:12:12.359Z] x-ms-error-code: InvalidHeaderValue
[2022-07-14T08:12:12.362Z] x-ms-request-id: 7b6aa13d-3373-405d-b11d-3a658f85a019
[2022-07-14T08:12:12.364Z] Date: Thu, 14 Jul 2022 08:12:12 GMT
[2022-07-14T08:12:12.366Z] Connection: keep-alive
[2022-07-14T08:12:12.371Z] Keep-Alive: REDACTED

Sorry I didnt understand what did I missed or what i did wrong.

I am having access to the storage and using the same account visual studio as well authenticated into Azure. I can see the same blob trigger connected in service dependencies.

score 0 · Answer 1 · answered Jul 14 '22 at 23:33

If you are using azurite (Storage emulator) while executing the function locally then this is a known issue.
This happens because the azurite will send the invalid header error when the incoming api request is of higher version than azurite.
The solution is simple just update the azurite and use the latest version of blob storage sdk too.

Refer the following thread.

Refer this doc.

InvalidHeaderValue Error in ADLS2 Blob trigger function C#

1 Answers1