HttpClient Post zip file to Sharepoint Rest API results in corrupt zip file

Question

Good afternoon. I have an Azure function that is triggered when a blob drops into a blob container in an azure storage account. The function uses an HttpClient library asynchronous post to sharepoint via the sharepoint REST API. When I download the resulting zip file from Sharepoint, I am unable to open the file with Windows extractor (it will open with WinRar, but that is not the end goal). I then use a utility to open the same file in my Azure storage and compare with the file that I sent to Sharepoint. The Sharepoint file has additional header data in it. If I manually remove the header data from the corrupted file, I can open the file with Windows Extractor. A little further information, the additional header in the corrupt file is the content-disposition header.

Answer 1

Thank You for following up. I switched to HttpClientFactory and everything started working. Thank You for your help.

Answer 2

@Neal Anthony ,

Thanks for reaching out to Q&A forum.

You can remove the header using the below code programmatically

HttpContext.Current.Response.Headers.Remove("Header-name");

Similar discussion here: https://stackoverflow.com/questions/3418557/how-to-remove-asp-net-mvc-default-http-headers

Please note that, this issue is not related to Azure functions. You should be able reproduce this issue outside the Azure environment as well.

I hope this helps!

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