[Bug] Unable to send a POST request using the low level CallApiForUserAsync

[abrousseau-hcgov]

Which version of Microsoft Identity Abstractions for dotnet are you using?
Note that to get help, you need to run the latest version.
Microsoft Identity Abstractions 7.0.2

Is this a new or an existing app?
This is a new app using IDownstreamApi from a client to communicate with a downstream api

            var downstreamApiOptions = new Action<DownstreamApiOptions>(
                options =>
                {
                    options.HttpMethod = HttpMethod.Post;
                    options.BaseUrl = baseUrl;
                    options.RelativePath = relativePath;
                });
           
            // This is a Stream passed to the client
            var inputContent = new StreamContent(fileToUpload);

            inputContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
            {
                DispositionType = "form-data",
                FileName = fileName,
                Size = fileToUpload.Length
            };

            inputContent.Headers.ContentType =
                MediaTypeHeaderValue.Parse(SharePointFileManagementConstants.MimeResponseApplicationOctetStream);
            inputContent.Headers.ContentLength = fileToUpload.Length;

            var multipartFormDataContent = new MultipartFormDataContent {{inputContent, fileName, fileName}};

            var responseMessage = await _downstreamApi.CallApiForUserAsync(SiteServiceName,
                downstreamApiOptions,
                null,
                multipartFormDataContent
            );

Expected behavior
There should be a call to the downstream api using the POST HTTP method

Actual behavior
An exception is thrown when the client tries to send the request downstream:
Method not found: 'Void Microsoft.Identity.Abstractions.AuthorizationHeaderProviderOptions.set_HttpMethod(System.Net.Http.HttpMethod)'.

[edsonschmitt]

On the 20th of September this commit happened

f7057d1

and the public API for DownstreamApiOptions was updated (thru its base class) AuthorizationHeaderProviderOptions

https://github.com/AzureAD/microsoft-identity-abstractions-for-dotnet/blob/202e4e06d5fac8c68b60b55f8d272d014b9168c0/src/Microsoft.Identity.Abstractions/DownstreamApi/AuthorizationHeaderProviderOptions.cs#L59C1-L60C1

A private project of mine also broke ... if this is trully required I think it should have been packaged as part of a Major (breakin) release. For me things broke going from 2.13.4 to 2.15.1

[abrousseau-hcgov]

@edsonschmitt Thank you for that. It seems like it was a breaking change where I had a newer version of DownstreamApi and the older Web/Web.Ui 2.13.4 version. I think that change in DownstreamApi should be made a major breaking change as you suggested. I will leave this bug for hopefully an official response.

[jmprieur]

No repro.
But I agree, Identity.Web should have taken a major version change.