This gist provides a simple http route on localhost:4000/test/ printing out the headers and the payload. Used for debugging only

debugHeaders.py

from http.server import BaseHTTPRequestHandler, HTTPServer
from urllib.parse import urlparse

class RequestHandler(BaseHTTPRequestHandler):

    def do_POST(self):
        # Parse the request URL
        parsed_path = urlparse(self.path)
        print(parsed_path)
        # Check if the requested URL is /test
        if parsed_path.path == "/test/":
            # Extract the headers from the request
            headers = str(self.headers)

            # Extract the input from the request
            content_length = int(self.headers['Content-Length'])
            post_data = self.rfile.read(content_length)

            # Print the headers and input to the console
            print("Headers:")
            print(headers)
            print("Input:")
            print(post_data)

            # Send a response back to the client
            self.send_response(200)
            self.send_header('Content-type', 'text/plain')
            self.end_headers()
            self.wfile.write(headers.encode())
            self.wfile.write(b'\r\n')
            self.wfile.write(post_data)
            return

        # If the requested URL is not /test/, return a 404 response
        self.send_response(404)
        self.send_header('Content-type', 'text/plain')
        self.end_headers()
        self.wfile.write(b'404 Not Found')
        return

# Start the server on port 8080
server_address = ('localhost', 4000)
print("Server running on")
print(server_address)
httpd = HTTPServer(server_address, RequestHandler)
httpd.serve_forever()