This simple server sends a fixed last modified date. If the client sends the same date in If-Modified-Since, it replies with 304 Not Modified. Otherwise, it sends the content with the Last-Modified header.
from http.server import BaseHTTPRequestHandler, HTTPServer
from datetime import datetime
class SimpleHandler(BaseHTTPRequestHandler):
last_modified = datetime(2024, 6, 1, 12, 0, 0)
def do_GET(self):
# Format last_modified as HTTP date
last_mod_str = self.last_modified.strftime('%a, %d %b %Y %H:%M:%S GMT')
# Get If-Modified-Since header from client
ims = self.headers.get('If-Modified-Since')
if ims == last_mod_str:
# Resource not modified
self.send_response(304)
self.end_headers()
return
# Resource modified or no If-Modified-Since header
self.send_response(200)
self.send_header('Content-type', 'text/plain')
self.send_header('Last-Modified', last_mod_str)
self.end_headers()
self.wfile.write(b'Hello! This is the latest content.')
if __name__ == '__main__':
server_address = ('', 8000)
httpd = HTTPServer(server_address, SimpleHandler)
print('Server running on http://localhost:8000')
httpd.serve_forever()
