Add initial implementation for sending notifications

apns2/client.py

@@ -0,0 +1,29 @@
+from enum import Enum
+from json import dumps
+
+from hyper import HTTP20Connection
+from hyper.tls import init_context
+
+
+class NotificationPriority(Enum):
+    Immediate = 10
+    Delayed = 5
+
+
+class APNsClient(object):
+    def __init__(self, cert_file, use_sandbox=False, use_alternate_port=False):
+        server = 'api.development.push.apple.com' if use_sandbox else 'api.push.apple.com'
+        port = 2197 if use_alternate_port else 443
+        ssl_context = init_context()
+        ssl_context.load_cert_chain(cert_file)
+        self.__connection = HTTP20Connection(server, port, ssl_context=ssl_context)
+
+    def send_notification(self, token_hex, notification, topic=None):
+        json_payload = dumps(notification.dict(), ensure_ascii=False, separators=(',',':')).encode('utf-8')
+        headers = {}
+
+        if topic:
+            headers['apns-topic'] = topic
+
+        url = '/3/device/{}'.format(token_hex)
+        self.__connection.request('POST', url, json_payload, headers)