The QUIC paper
Please read this recent paper on a Google-led improvement to the web protocol:
Langley et al., The QUIC Transport Protocol: Design and Internet-Scale Deployment. In Proceedings of the Conference of the ACM Special Interest Group on Data Communication (SIGCOMM ‘17). ACM, New York, NY, USA, 183-196. DOI: https://doi.org/10.1145/3098822.3098842
- What major problem does QIUC intend to solve?
- Briefly describe the mechanisms that QUIC is based on
- Why this paper now? Why didn’t the original web protocols adopt a QUIC-like design? What is it about the users, applications, network, end devices, etc that make QUIC relevant in 2017 that weren’t present in e.g. 1995?
TritonHTTP test cases
Take a look at the TritonHTTP specification and HW 4 (Writing a web server), and in particular the grading rubric. For this assignment, you are going to write out test cases that you plan to use to test the correctness of your server, in a format described below. For each test case, you are going to write out (1) any conditions that need to exist on the server for the case to be tested, and (2) the expected behavior of your server (if it is working correctly). You should group the tests into categories, one per rubric item. The number of test cases pre category is up to you, however avoid writing down redundant test cases.
Each test case will be defined similar to the examples presented in HW4.
You will write down the TritonHTTP request, and use the
tokens to indicate where CR and LF values are (so we can see them in
your write-up). For each such test case, write out the details of the
test and what you expect to see.
Example 1: A valid 200 request
GET /index.html HTTP/1.1<CR><LF> Host: www.cs.ucsd.edu<CR><LF> User-Agent: MyClient/1.0<CR><LF> <CR><LF>
Pre-conditions: an HTML file called index.html exists in the doc root.
Expected behavior: the server returns a 200 status code reply followed by the text of the index.html file
Example 2: An invalid 200 request
GET /index.html HTTP/1.1<CR><LF> User-Agent: MyClient/1.0<CR><LF> <CR><LF>
Expected behavior: The server replies with a 400 status code response because
Host header is missing.
We are going to consider a set of possible tests for your webserver in HW4. For each of these tests, we’re going to look for them in your write-up. If they are there, you’ll get a point for that test, and if not, you won’t get that point.
Submitting your work
Log into gradescope.com and upload your solutions as a single PDF file. Make sure to include your name and PID in your write-up. This homework is to be done either individually, or in a group of 2. If you do a group of 2 for HW 3, you must be in that same group for HW 4.
Tuesday Oct 23, 5pm
This assignment is worth 5 points
Bhargav Heeraguppe Sridharan