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Coding workflows · Restricted HTTPS origin comparison
03
A concrete starting point
Compare HTTPS origins for ASCII DNS names with alphabetic suffixes, using port 443 by default. Check host case and ignore paths, rejecting credentials, IP literals, spaces and ports outside 1–65535.
Define the change
Describe the input, expected output and boundaries that must stay intact.
Inspect the work
Review the proposed edits and any commands before relying on their result.
Check the outcome
Compare actual behavior with the expected result. If a check fails, investigate it before applying more changes.
Restricted HTTPS origin comparison
A concrete starting point
import re
from urllib.parse import urlsplit
def https_origin(url):
if type(url) is not str or any(not 33 <= ord(c) <= 126 for c in url):
raise ValueError("origin.text")
p = urlsplit(url)
if p.scheme.lower() != "https" or p.username is not None or p.password is not None:
raise ValueError("origin.scheme")
host = p.hostname or ""
labels = host.lower().split(".")
if len(labels) < 2 or not re.fullmatch(r"[a-z]{2,63}", labels[-1]):
raise ValueError("origin.dns")
if any(not re.fullmatch(r"[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?", x) for x in labels):
raise ValueError("origin.label")
if len(host) > 253 or p.netloc.endswith(":") or "\\" in url:
raise ValueError("origin.authority")
port = p.port if p.port is not None else 443
if not 1 <= port <= 65535:
raise ValueError("origin.port")
return ("https", host.lower(), port)
def same_origin(a, b):
return https_origin(a) == https_origin(b)The example is a starting point for a real project, not a claim that generated code is already tested. Adjust paths, dependencies and expected behavior to match your application.