Ignore alpn errors on old ssl & python3.4. Should work with apple ser…

…ver without ALPN
etataurov · Oct 28, 2016 · 8cd18a6 · 8cd18a6
1 parent d1ea94b
commit 8cd18a6
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/asyncio_apns/h2_client.py b/asyncio_apns/h2_client.py
@@ -65,7 +65,10 @@ def connect(cls, host: str, port: int,
         if loop is None:
             loop = asyncio.get_event_loop()
         ssl_context = ssl.create_default_context()
-        ssl_context.set_alpn_protocols(["h2"])
+        try:
+            ssl_context.set_alpn_protocols(["h2"])
+        except (NotImplementedError, AttributeError):
+            pass
         if not verify_ssl:
             ssl_context.check_hostname = False
             ssl_context.verify_mode = ssl.CERT_NONE