File Transfer Protocol:

$1.$ Send a file transfer request to the server. Generate this request using the

pack$\_$transfer$\_$request$\_$message function

$2.$ Receive a response from the server indicating that it is ready to start receiving

the file. Process this request using the unpack$\_$ack$\_$message function.

$3.$ Repeat until the file is transfered successfully:

a$.$ Send the file chunk specified in the previously received ACK message. Pack the

chunk into the required format using the pack$\_$file$\_$chunk function.

b$.$ Listen for an ACK from the server. Unpack it using the unpack$\_$ack$\_$message

function and extract the next chunk requested by the server.

$4.$ End this process once the server asks for a chunk that is larger than the final

chunk of the file, as this indicates that the entire file has been received.