The advantage of using DomainSocket is that it uses the built-in transport channel of the operating system and does not occupy the network cache. Theoretically, it is slightly faster than local loopback networks.
Currently, it can only be used on platforms that support Unix domain sockets, such as Linux and macOS. It is not available until Windows 10 Build 17036.
If DomainSocket is specified as the transport mode, the ports and IP addresses configured in the inbound and outbound proxies will be invalidated, and all transports will be replaced by DomainSocket.