- Hack to stop hitting unreachable on referer
- add fetch_done to make sync work
- Make datauris work by setting the response URI, spec bug
- Allow for empty bodies
- Make request bodies work (pass to http, fix fencepost in iter count)
Need to make sure close is only sent to the server once, either from a
client initiation or from a server echo. This adds the sent check to
both incoming and outgoing threads.