Log Entry 5

Circa March 2020

We have previously taken looks at the gQUIC source found here. We recently imported the repository (which contains code for QUIC, HTTP2, SPDY, etc) and began to take a look at QUICs implementation. The codebase is written in C++. You can find our imported repository here.

The codebase also contains comments which sometimes provide very interesting insight into how QUIC was implemented. For example quic/core/quic_crypto_client_handshaker.cc provides some insight into the design behind QUICs 0-RTT. As we can see here we have the following insights providing some insight:

// While 0-RTT handshakes could be considered to be like resumption, QUIC
// Crypto doesn't have the same notion of a resumption like TLS does.

We also found interesting pieces of information regarding server sessions, found here:

// Don't set the ready bit if we closed the connection due to any error
 // beforehand.

We will continue to analyze the source code to find anything useful for our project.

We were also treated with many “bloopers” like this:

        }  // End of inner version loop.
      }    // End of priority_tag loop.
    }      // End of outer version loop.
  }        // End of congestion_control_tag loop.