I am currently building a C# WebApi 2 application that I will be uploading to an Amazon Elastic Beanstalk instance to deploy. I am having success so far, and on my local machine, I just finished testing the file upload capability in order for clients to upload images.
The way it goes is I accept the multipart/formdata in the Web Api and save the temp file (with a random name like BodyPart_24e246c7-a92a-4a3d-84ef-c1651416e667) to the App_Data folder. The temporary file is put into an S3 Bucket and I create a reference in my SQL Server database to it.
Testing works fine with single or multiple file uploads locally but when I deploy the application to Elastic Beanstalk and try to upload I get errors like "Could not find a part of the path 'C:\inetpub\wwwroot\sbeAPI_deploy\App_Data\BodyPart_8f552d48-ed9b-4ec2-9986-88cbffd673ee'" or a similar one saying access is denied altogether.
I have been trying to find the solution online for a few hours now, but the AWS documentation is all over the place and tutorials/other questions seem to be outdated. I believe it has something to do with not having permission to write the temporary files on the EC2 server, but I can't figure out how to fix it.
Thanks very much in advance.