clone the repo:
git clone --recursive https://github.com/3lswear/minitalkbuild:
cd minitalk && makelaunch server:
./server
launch client with server's pid and string to send as arguments:
./client 1337 a_string_to_sendor, to make things easier:
./client $(pidof server) "$(< text.txt)"The program consists of a client and a server. The former takes a file and sends it to server using user-defined signals SIGUSR1, SIGUSR2.
Upon completion the server simply prints out received text.
The communication goes on something like this:
┌───────────┐ ┌───────────┐
│ │ one bit of data │ │
│ ├────────────────────► │
│ │ │ │
│ client │ SIGUSR1/SIGUSR2 │ server │
│ │ │ │
│ │ │ │
│ ◄────────────────────┤ │
│ │ confirmation │ │
└───────────┘ └───────────┘
The hard part was to make data transfer fast and resistant to latency variations.