I’m trying to stream a file from one webserver (Jfrog) to another (nexus content server).
I have working code that does this like this:

    def get_file():
        url = "https://webserver.com/big_file.zip"
        with requests.get(url,, stream=True) as file_stream:
            self.stream_file_to_webserver(file_stream)

    def stream_file_to_webserver(file_stream):
        upload_url = "https://nexus.com/big_file.zip"
        with requests.put(upload_url, data=file_stream.iter_content(chunk_size=8192), headers={'Content-Type': 'application/octet-stream'}) as response:
            if response.status_code != 201:
                print("Success")

This works fine, but I need to upload to the Nexus content server in a different (because of another issue with other metadata fields missing when you upload this way).

There I want to upload this way:

import requests
from requests.auth import HTTPBasicAuth

class FileWrapper:
    def __init__(self, file_iterator):
        self.file_iterator = file_iterator

    def read(self, size=-1):
        return next(self.file_iterator, b'')

    def get_file():
        url = "https://webserver.com/big_file.zip"
        with requests.get(url,, stream=True) as file_stream:
            self.stream_file_to_webserver(file_stream)

    def stream_file_to_webserver(source_response):
        upload_url = f"https://nexus.com/repository"
        
        file_wrapper = FileWrapper(source_response.iter_content(chunk_size=8192))
        
        payload = {
            'raw.directory': ('/'),
            'raw.asset1.filename': ('big_file.zip'),
            'raw.asset1': ('big_file.zip', file_wrapper)
        }

        with requests.post(upload_url, files=payload) as response:
            if response.status_code == 201:
                print("File uploaded to Nexus successfully.")
            else:
                print(f"Failed {response.text}")

But this seems to fail because somehow the payload is not set correctly.

 [{"id":"directory","message":"Missing required component field 'Directory'"},{"id":"filename","message":"Missing required asset field 'Filename' on '1'"},{"id":"filename","message":"Missing required asset field 'Filename' on '2'"},{"id":"filename","message":"Missing required asset field 'Filename' on '3'"},{"id":"*","message":"The assets 1 and 2 have identical coordinates"},{"id":"*","message":"The assets 2 and 3 have identical coordinates"}]

Does anyone know what I am doing wrong and how I can fix this?