Simple client server UDP application. The server uses a hasmap to stores values sent from the client. The client can store and manipulate the data on the server.
The server will accept UDP packets with a payload consisting of ASCII characters starting with either get, put, swap or remove. The colon character is used as a delimiter, so a get command should be formatted as
get: key
put: key:value
swap: key:key2
remove: key
If the input packet is not a well-formed get, put, swap or remove, the server replies with error:unrecognizable input:copy of the input packet’s payload here
The server takes an optional command line argument.
If present, it is interpreted as the port number that the server is to use. If no port number is specified, the server uses port 31357.
The client program takes 4-5 arguments.
The first two arguments are the name of the host that the server is running on and the port number on which it’s listening. The third argument is either get, put, swap or remove and the remaining arguments are the argument strings for its respective operation. The client sends an appropriately formatted get, put, swap or remove packet to the server (based on the command line arguments) and prints the payload of the packet returned by the server.