A simper python http server can handle mime type properly

Server.py

# -*- coding: utf-8 -*-
#test on python 3.4 ,python of lower version  has different module organization.
import http.server
from http.server import HTTPServer, BaseHTTPRequestHandler
import socketserver

PORT = 8080

Handler = http.server.SimpleHTTPRequestHandler

Handler.extensions_map={
        '.manifest': 'text/cache-manifest',
	'.html': 'text/html',
        '.png': 'image/png',
	'.jpg': 'image/jpg',
	'.svg':	'image/svg+xml',
	'.css':	'text/css',
	'.js':	'application/x-javascript',
	'': 'application/octet-stream', # Default
    }

httpd = socketserver.TCPServer(("", PORT), Handler)

print("serving at port", PORT)
httpd.serve_forever()

I tried av variant of this approach, but it didn't work. I think I blame the python library, though. According to Chrome, the server serves imported ES6 modules (.js/.mjs) as "text/html" (causing the browser to refuse them) after updating the extensions_map (no need to replace the whole map) with entries for .js/.mjs.

saved my life

wasm support: add '.wasm': 'application/wasm',

There is a very subtle bug in this code:

Handler = http.server.SimpleHTTPRequestHandler

This creates a shallow copy, this means that it actually modifies http.server.SimpleHTTPRequestHandler, here a demonstration:

import http.server

Handler = http.server.SimpleHTTPRequestHandler
Handler.foo = 42

print(http.server.SimpleHTTPRequestHandler.foo) # 42

The correct way to do this is to inherit from http.server.SimpleHTTPRequestHandler:

import http.server

class Handler(http.server.SimpleHTTPRequestHandler):
    pass

Handler.foo = 42

print(http.server.SimpleHTTPRequestHandler.foo) # AttributeError

The modified script with some additional tweaks:

import http.server
import socketserver

PORT = 8080

class HttpRequestHandler(http.server.SimpleHTTPRequestHandler):
    extensions_map = {
        '': 'application/octet-stream',
        '.manifest': 'text/cache-manifest',
        '.html': 'text/html',
        '.png': 'image/png',
        '.jpg': 'image/jpg',
        '.svg':	'image/svg+xml',
        '.css':	'text/css',
        '.js':'application/x-javascript',
        '.wasm': 'application/wasm',
        '.json': 'application/json',
        '.xml': 'application/xml',
    }

httpd = socketserver.TCPServer(("localhost", PORT), HttpRequestHandler)

try:
    print(f"serving at http://localhost:{PORT}")
    httpd.serve_forever()
except KeyboardInterrupt:
    pass

There is a very subtle bug in this code:

Nice updates. Thanks @asynts!

Thanks! Also, for cleanup of server i used context manager around httpd.

with socketserver.TCPServer(("", PORT), Handler) as httpd:
    print("serving at port", PORT)
    httpd.serve_forever()

wasm support: add '.wasm': 'application/wasm',

yessss

        '.js':'application/x-javascript',

Maybe a line for '.mjs' (ES6 module) files too?