Provide Regular Expression for the following: a$.$ Connection Establishment: $[10$pts$]$ i$.$ The client initiates a connection by sending a connection request $($C$),$ possibly followed by any number of errors $($E$).$ ii$.$ The server responds with a handshake $($H$).$ If an error $($E$)$ occurs after the handshake, the server must retransmit the handshake $($H$).$ This can happen any number of times. iii. After a successful handshake, a secure key exchange $($S$)$ occurs exactly once, possibly preceded and$/$or followed by errors $($E$).$ If any error occurs after the key exchange and before data transmission begins, the client must restart the connection process by sending another connection request $($C$),$ and the process from step $1$ repeats. Answer: