Avoid deviant defaults

Author: blast-hardcheese

impls/python-protocolv2/src/testservice/client.py

@@ -35,13 +35,13 @@
 # a subtle and unfortunate difference.
 
 # Load environment variables
-PORT = os.getenv("PORT")
-CLIENT_TRANSPORT_ID = os.getenv("CLIENT_TRANSPORT_ID")
-SERVER_TRANSPORT_ID = os.getenv("SERVER_TRANSPORT_ID")
-HEARTBEAT_MS = int(os.getenv("HEARTBEAT_MS", "500"))
-HEARTBEATS_UNTIL_DEAD = int(os.getenv("HEARTBEATS_UNTIL_DEAD", "2"))
-SESSION_DISCONNECT_GRACE_MS = int(os.getenv("SESSION_DISCONNECT_GRACE_MS", "3000"))
-RIVER_SERVER = os.getenv("RIVER_SERVER")
+PORT = os.environ["PORT"]
+CLIENT_TRANSPORT_ID = os.environ["CLIENT_TRANSPORT_ID"]
+SERVER_TRANSPORT_ID = os.environ["SERVER_TRANSPORT_ID"]
+HEARTBEAT_MS = int(os.environ["HEARTBEAT_MS"])
+HEARTBEATS_UNTIL_DEAD = int(os.environ["HEARTBEATS_UNTIL_DEAD"])
+SESSION_DISCONNECT_GRACE_MS = int(os.environ["SESSION_DISCONNECT_GRACE_MS"])
+RIVER_SERVER = os.environ["RIVER_SERVER"]
 
 
 logging.basicConfig(