How to Set Default Content-Type and Content-Encoding for Mapbox Vector Tiles in Azure File Share?

Question

Hi Azure Community,

I've created a file share container in Azure and uploaded some .pdf Mapbox shape files, which I'm trying to serve as Mapbox vector tiles. However, I'm encountering an issue where the content-type is automatically set to "application/x-gzip" with no content-encoding. This is causing the tiles to render incorrectly.

am getting

For the vector tiles to render properly, I need the following response headers:

• Content-Type: "application/octetstream"
• Content-Encoding: "gzip"

Expected:

Is there a way to configure Azure to set these response headers by default, or any settings that allow me to control these values during file upload or access?

Any help or guidance would be greatly appreciated!

Answer 1

Hello Manikandan T,

Greetings! Welcome to Microsoft Q&A Platform.

 

Azure Storage currently does not support setting default response headers like Content-Type or Content-Encoding automatically during file upload. However, there are some ways you can manage and control these values:

 

-You can create an Azure Function or Logic App that triggers automatically upon the upload of a blob. This function can then set the appropriate Content-Type and Content-Encoding headers. This solution is flexible and can handle different content types as needed.

 

-After uploading your files, you can manually set the Content-Type to "application/octet-stream" and the Content-Encoding to "gzip" using Azure Storage Explorer, Azure CLI. For example, using the Azure CLI, you can update the blob properties as follows, az storage blob update --container-name <container-name> --name <blob-name> --content-type "application/octet-stream" --content-encoding "gzip" --account-name <storage-account-name>

 

-If you are using a programmatic approach, ensure that the correct metadata and properties are set right during or immediately after the upload. You can use the Azure Storage REST API.

 

-If you want to automate this process, consider using a script or a tool that sets these properties upon upload. This can be done programmatically using the Azure SDKs.

 

 

A similar issue is discussed in the Answer section of the following SO thread: https://stackoverflow.com/questions/23600229/what-content-type-header-to-use-when-serving-gzipped-files, https://stackoverflow.com/questions/50011759/azure-file-storage-content-type-is-always-application-octet-stream

 

Here is the doc for your reference: https://learn.microsoft.com/en-us/rest/api/storageservices/set-blob-properties?tabs=microsoft-entra-id

 

Hope this answer helps! please let us know if you have any further queries. I’m happy to assist you further.

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Answer 2

Thanks Mr @Nehruji R , Your answer is really help me.