This is a fork of the official CraftBukkit mc-dev repository which was (at some point in time) supported for new versions of the game.
This repository is reverted back to commit 1.7.3 (hash 1a792ed860ebe2c6d4c40c52f3bc7b9e0789ca23) and edited to be buildable by most modern tools.
The goal is to provide easy access to a buildable and working version of a Beta 1.7.3 server, as it gained relevancy lately.
You can open this repository as a raw java project through Eclipse or IntelliJ Idea, or initialize a build system of your liking.
Point your IDE/Build system to launch MinecraftServer as the main class, and run the application.
Make sure to not connect to the server straight away after you first launch it, because you will be greeted with an instant client crash.
You should set online-mode to false in your server.properties file. The reason for this is that Mojang's authentication servers nowadays use a modern version that Beta 1.7.3 is not capable of working with.
The client tries to initiate a legacy authentication process, gets an unexpected response, and immediately crashes.
Setting online-mode to false disables the authentication step and avoids the crash.