29 lines
1 KiB
Python
29 lines
1 KiB
Python
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#!/usr/bin/env python3
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"""Dev server that refuses to cache anything.
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`python3 -m http.server` sends Last-Modified, and browsers cache ES modules on
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it hard enough that a reload can serve a stale js/app.js against a fresh
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index.html. That failure is silent and points nowhere near its cause: the new
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knobs appear in the markup, nothing wires them, no error is raised, and the
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symptom reads as "the feature you just added does not work".
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"""
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import sys
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from http.server import SimpleHTTPRequestHandler, ThreadingHTTPServer
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class NoCache(SimpleHTTPRequestHandler):
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def end_headers(self):
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self.send_header('Cache-Control', 'no-store, must-revalidate')
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self.send_header('Expires', '0')
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super().end_headers()
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def log_message(self, fmt, *args):
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if '304' not in fmt % args:
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super().log_message(fmt, *args)
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if __name__ == '__main__':
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port = int(sys.argv[1]) if len(sys.argv) > 1 else 8777
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print(f'http://127.0.0.1:{port} (no-store)')
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ThreadingHTTPServer(('127.0.0.1', port), NoCache).serve_forever()
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