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fix: use Vapid.from_pem() instead of passing PEM string to webpush()

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pywebpush 2.x routes string keys through Vapid.from_string() which only
handles raw/DER base64 — not PEM. Pre-build the Vapid object so the key
deserializes correctly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Scott Idem
2026-05-08 23:56:17 -04:00
parent 19475610be
commit c21f9a23ec
1 changed files with 3 additions and 1 deletions
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4
cortex/push_utils.py
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@@ -67,12 +67,14 @@ def _get_private_key_pem() -> str:
def _send_one(sub: dict, payload: dict) -> bool: def _send_one(sub: dict, payload: dict) -> bool:
"""Send a push to a single subscription. Returns False if the endpoint is stale (410).""" """Send a push to a single subscription. Returns False if the endpoint is stale (410)."""
from pywebpush import webpush, WebPushException from pywebpush import webpush, WebPushException
from py_vapid import Vapid
try: try:
vapid = Vapid.from_pem(_get_private_key_pem().encode())
webpush( webpush(
subscription_info=sub, subscription_info=sub,
data=json.dumps(payload), data=json.dumps(payload),
vapid_private_key=_get_private_key_pem(), vapid_private_key=vapid,
vapid_claims={"sub": settings.vapid_contact}, vapid_claims={"sub": settings.vapid_contact},
) )
return True return True