Defines the timeout in milliseconds after which messages sent via the AllCost channel will be re-sent without waiting for acknowledgement. Default value = 20 ms.
AllCost delivery quality of service (QOS) is a special QOS for delivering game-critical information, such as when the game starts, or when bullets are shot.
Due to packets dropping, sometimes reliable messages cannot be delivered and need to be re-sent. Reliable messages will re-sent after RTT+Delta time, (RTT is round trip time) where RTT is a dynamic value and can reach couple of hundred milliseconds. For the AllCost delivery channel this timeout can be user-defined to force game critical information to be re-sent.