Erlang RPC server

This is a toy exercise to learn Erlang. I will write a rpc server in Erlang. With this server, users can send "module:func(args)" commands to a tcp socket, the server will execute the command and reply with the result

How to run

Compile

erlc src/tr_server.erl

Run

• Open erlang shell

erl

• Start the server

Erlang/OTP 23 [erts-11.1.3] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [hipe] [dtrace]

Eshell V11.1.3  (abort with ^G)
1> tr_server:start_link(1055).

Note that it will not be ready unless a client connects over TCP although it returns. It is waiting for a client to open a tcp connection.

• Execute rpc

viveks:~/ telnet localhost 1055
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
math.pi(). # sample rpc command
3.141592653589793
init:stop().  # send stop command to the server
ok

When you execute tr_server:get_count(). in erlang shell, you will get updated counts.

Test

Run tr_server:test() in erlang shell

Install Erlang

brew install erlang

IDE

I am using IntelliJ with erlang plugin.