1 and rst mean reset, which is short for English reset. Usually this is not a socket, but a hole with a small switch in it. When the system crashes or factory settings are to be restored, touch the switch with something similar to a toothpick and restore the factory settings after restarting. The RST key on the car navigation is the reset key, which can restore the navigation to the factory settings. In other words, when the navigation crashes or the program fails, you can use this key to reset and the navigation will run normally.

2.rst is one of the six flag bits in TCP header, indicating reset connection and reset connection. Generally speaking, whenever there is an error in the connection between a segment and the benchmark, TCP will issue a reset segment. A connection request to a nonexistent port will generate a reset when the connection request arrives and no process at the destination port is listening.