Local Server for Testing WASM

Testing Wasm in the browser requires a web server, as most browsers restrict running Wasm from local files. To quickly get a local webserver running to test a Wasm file, you can use Python to run a web server to host the static files in a directory and use the correct mime type for the Wasm file. Create a file called serve.py containing:

import http.server
import socketserver

PORT = 8000

Handler = http.server.SimpleHTTPRequestHandler
Handler.extensions_map = {
    '.html': 'text/html',
    '.wasm': 'application/wasm',
    '': 'application/octet-stream',
}

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

Run python3 serve.py and open http://localhost/8000.