Project 2 for Computer Systems, Semester 1, 2017 at the University of Melbourne. The server is essentially used for checking the validity of given proof-of-works and can also compute valid proof-of-works. Note that the protocol used by the server to connect to its clients is SSTP.

Run the server using:

prompt: ./server [port_number]

where [port_numer] is a valid port number.

The server uses the following message protocols:

• PING, after which the server replies with a PONG
• ERRO <reason>: BYTE[40], which indicates an error and a cause for the error
• SOLN difficulty:uint32 seed:BYTE[64] solution:uint64, here the server checks if the concatenation of seed and the solution does in fact produce the target requirement derived from the difficulty value
• WORK difficulty:uint32 seed:BYTE[64] start:uint64 worker_count:uint8, here start in the initial nonce value. The server puts this work in the work queue. Once a proof-of-work solution is found, it replies with the corresponding SOLN message
• ABRT, on receiving this, the server traverses the work queue and removes all the pending work for that client and prematurely kills all active computations for that client