Project 2: chitcp

In this project you will be implementing the Transmission Control Protocol, as specified in [RFC793]. However, instead of implementing it inside the operating system itself, you will be implementing it inside a system called chiTCP. This system allows you to write socket-based applications that rely on your TCP implementation instead of the one included in your operating system. To do this, chiTCP provides an alternate socket library, chisocket, that provides the same functions as the standard socket library (connect, send, recv, etc.). Although the chisocket functions have the same expected behaviour as the standard socket functions, they do not implement the entire functionality provided by standard sockets (e.g., non-blocking sockets are not supported).

Please refer to the following documents to complete this project:

• Make sure you’ve read our Getting Started page.

• You can find instructions on how to register for the project (and how to get your Git repo) in our Project Registration page.

• chiTCP specification: In this project, you will be implementing Assignments 1 and 2 of chiTCP.

• Project 2 rubric

• Project 2 tips

Submission Timeline

This project has two required submissions, and an optional resubmission:

Submission	Requirements	Due Date
Project 2A	Assignment 1 of chiTCP	Wednesday, April 24, 8pm
Project 2B	Assignment 2 of chiTCP (Note: Assignment 2 builds on Assignment 1)	Wednesday, May 1, 8pm
Resubmission (Optional)	Address feedback received in Project 2	One week after Project 2B is graded

Please see Project 2 rubric for more details on how each submission will be graded.

Initializing your Project 2 Repository

Make sure that you have read the Getting Started page as well as the the Project Registration instructions.

One-time setup instructions

Only one team member needs to run these commands. Create an empty directory and, inside that directory run the following commands. In the commands below, $REPO_URL refers to the SSH URL of your repository. To get this URL, log into GitHub and navigate to your project repository. Then, under “Quick setup — if you’ve done this kind of thing before”, make sure the “SSH” button is selected, and copy the URL that appears next to it. It should look something like this: git@github.com:uchicago-cmsc23320-spr-24/chitcp-jdoe-jrandom.git

git init
git remote add origin $REPO_URL
git remote add upstream https://github.com/uchicago-cs/chitcp.git
git pull upstream main
git branch -M main
git push -u origin main

Cloning instructions

Once the repository has been set up, you can clone the repository in other locations as follows:

git clone $REPO_URL
git remote add upstream https://github.com/uchicago-cs/chitcp.git