Echo

Echo is a service that responds with any header or body you send over, as-is.

About

This project is intended to be educational, for-research-only and solving a fictional problem, and is not intended to work on any production environment whatsoever as it can potentially leak private information due to its most basic functionality.

Requirements

• Crystal Lang >= 0.24.2 (2018-03-10)

Up and running

Configuration

Configuration	Environmental variable	Purpose	Default
Echo host	ECHO_HOST	The host Echo will run on	0.0.0.0
Echo port	ECHO_PORT	The port Echo will listen to	8018

Running

A Makefile is provided to handle common operations – like running the service.

Target	Description	Examples
run	Run the service	$ make run Listening on 0.0.0.0:8018
build	Build the binary	$ make build crystal build -p -t --verbose --error-trace -o echo src/echo.cr cc "${@}" -o /home/... ...
clean	Delete the binary	$ make clean

Or rather using crystal binary:

1. Running:

$ crystal run src/echo.cr
Listening on 0.0.0.0:8018

2. Building a binary:

crystal build src/echo.cr
...

Refer to Crystal's documentation for more information and help.

Author

Tanja Álvarez 2018