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BareBoneCi is a minimal Continuous Integration System.

The initial plan was to follow 500 Lines or Less: A Continuous Integration System, but deviated a lot.

1. Wrote a multiprocess socket server class using os.fork and the socket library. This enables initiating a server that can handle multiple connections, to be used as a server for the dispatcher and runner.

Challenges

1. The dummy forked server instance creation and multiprocess handling.

• Although I could have used the socketserver library, I wanted to code my own socket server class that uses os.fork.
• The first major problem I encountered was the clash between ending the loop and creating a new instance.
• While trying to solve that problem, I realized there were other problems too, like zombie processes and socket file descriptors not closing correctly.
• This was partially solved in commit #a97101b by using os.wait to make the parent process wait until interruptions, closing the listening socket in the child process, and separating the start and serve methods from the constructor.
• Resources that helped:
  1. Ruslan Spivak's blog on web servers
  2. Python Fork() Exit Status

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