constructor ({ socket, request, contentLength, client, expectsPayload, header }) {
    this.socket = socket
    this.request = request
    this.contentLength = contentLength
    this.client = client
    this.bytesWritten = 0
    this.expectsPayload = expectsPayload
    this.header = header

    socket[kWriting] = true
  }
Parses the remaining attributes of a set-cookie header
@see https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-rfc6265bis#section-5.4
@param {string} unparsedAttributes
@param {[Object.<string, unknown>]={}} cookieAttributeList