Send data as multipart/form-data
I have .NET Core back end, that receive DTO as form-data.
multipartform-data
Multipart form POST using ASP.Net Web API
I have a POST ASP.Net Web Api method adapted from A guide to asynchronous file uploads in ASP.NET Web API RTM.
WebAPI File Uploading – Without writing files to disk
All the documentation / tutorials / questions about processing a file uploaded using FormData to a ASP.NET WebAPI handler use MultipartFormDataStreamProvider to process the multipart stream to split it into the relevant form fields and files.
Using MultipartPostHandler to POST form-data with Python
Problem: When POSTing data with Python’s urllib2, all data is URL encoded and sent as Content-Type: application/x-www-form-urlencoded. When uploading files, the Content-Type should instead be set to multipart/form-data and the contents be MIME-encoded.