$3.$ Write a TCPmboxServer that accepts the following requests:

$-$ create mboxID : Create a mailbox with I$[$ mboxID and record the client IP address as the owner.

$-$ send mboxID message : Send a message to the mailbox

$-$ read mboxID : Read one message from the mailbox. Can keep reading until the end in one connection. Start all over again on new connection $($i$.$e$.$ stateless$).$

$-$ delete mboxID : Delete one message from the mailbox. Can keep deleting until no more message left. Only owner can delete.

$-$ destroy mboxID : Destroy the mailbox with ID mboxID. $($only owner$)$

$-$ This is a public messaging system so anyone can send$/$read from any mailbox as long as it exists. But only owner can delete$/$destroy$.$

$-$ Need to save the owner IP for each mailbox.

$-$ Need to save all messages before they are deleted.

$-$ Need to handle all application errors such as duplicate mboxID, send$/$read$/$delete$/$detroy to nonexistent mbox, illegal delete$/$detroy$,$ etc.

$-$ Write the corresponding client program to test the service.

Write a client with GUI.