| #!/usr/bin/env python3 |
| |
| import os |
| import sys |
| from datetime import datetime, timedelta |
| |
| modified_since = os.environ.get('HTTP_IF_MODIFIED_SINCE', '') |
| |
| sys.stdout.write('Content-Type: text/html\r\n') |
| |
| if modified_since: |
| sys.stdout.write('status: 304\r\n\r\n') |
| sys.exit(0) |
| |
| one_year = 12 * 31 * 24 * 60 * 60 |
| last_modified = '{} +0000'.format((datetime.utcnow() - timedelta(seconds=one_year)).strftime('%a, %d %b %Y %H:%M:%S')) |
| expires = '{} +0000'.format((datetime.utcnow() + timedelta(seconds=one_year)).strftime('%a, %d %b %Y %H:%M:%S')) |
| |
| sys.stdout.write( |
| f'Cache-Control: no-cache, max-age={one_year}\r\n' |
| f'Expires: {expires}\r\n' |
| 'Content-Type: text/html\r\n' |
| 'Content-Length: 0\r\n' |
| 'Etag: 123456789\r\n' |
| f'Last-Modified: {last_modified}\r\n\r\n' |
| ) |
| sys.exit(0) |
