docs: function onConnection(socket) {
    var endpoint = new http2.Endpoint(log, 'SERVER', {});
    endpoint.pipe(socket).pipe(endpoint);
  
    endpoint.on('stream', function(stream) {
      stream.on('headers', function(headers) {
        var path = headers[':path'];
        var filename = join(__dirname, path);
  
        // Serving server.js from cache. Useful for microbenchmarks.
        if (path == cachedUrl) {
          stream.headers({ ':status': 200 });
          stream.end(cachedFile);
        }
  
        // Reading file from disk if it exists and is safe.
        else if ((filename.indexOf(__dirname) === 0) && exists(filename) && stat(filename).isFile()) {
          stream.headers({ ':status': 200 });
  
          // If they download the certificate, push the private key too, they might need it.
          if (path === '/localhost.crt') {
            var push = stream.promise({
              ':method': 'GET',
              ':scheme': headers[':scheme'],
              ':authority': headers[':authority'],
              ':path': '/localhost.key'
            });
            push.headers({ ':status': 200 });
            read(join(__dirname, '/localhost.key')).pipe(push);
          }
  
          read(filename).pipe(stream);
        }
  
        // Otherwise responding with 404.
        else {
          stream.headers({ ':status': 404 });
          stream.end();
        }
      });
    });
  }