Developing QUIC Loss Detection and Congestion Control in Haskell - あどけない話
For last two months, I have been trying to implement "QUIC Loss Detection and Congestion Control" in Haskell. This blog article describes a brief summary on what I have done. ACK handling Before loss detection and congestion control were developed, QUIC packets were retransmitted, if necessary, by a simple resender lightweight thread based on timeout. The internal data structure was, of course, Pr
Implementing HTTP/3 in Haskell - あどけない話
Mew.org is now speaking HTTP/3 (HTTP/2 over QUIC). If you gain access to the site using Firefox Nightly, the first connection would be HTTP/2 then the following connections should be HTTP/3 led by Alt-Svc:. Firefox Nightly This article explains insights which I found through the implementation activities of QUIC and HTTP/3 in Haskell. HTTP/2 server library I started implementing QUIC in January 20
Implementation status of QUIC in Haskell - あどけない話
After implementing HTTP/2 in Haskell and TLS 1.3 in Haskell, I have been working for IETF QUIC. This article explains what I have done in 2019 fiscal year of Japan to report our sponsor, Internet Initiative Japan (IIJ). I have both titles of IIJ and IIJ-II. I'm wearing an IIJ-II hat in this article. If you wonder why I'm using Haskell to implement network protocols, please give a look at my positi
HTTP/2 server library in Haskell - あどけない話
I'm trying to develop QUIC in Haskell. In short, QUIC is a fast and reliable transport protocol based on UDP. You can think of it as TCP2. HTTP/2 over QUIC is now called HTTP/3. Two level dispatchings are necessary for QUIC: Dispatching QUIC packets to connections Dispatching QUIC streams in a connection to something (perhaps to lightweight thread workers) OS kernels are taking care of the first d
QUIC開発日記 その1 参戦 - あどけない話
QUICや ああQUICや QUICや 詠み人知らず。QUICの実装の難しさに絶望した心境が詠まれたと伝う。 序章 2017年の7月ごろ、QUICの実装を始めました。Haskellの有名なシリアライザ/デシリアライザである binary や cereal では、バッファ操作ができないので、パケットヘッダを複雑に処理する必要がある QUIC には不向きです。そこで、Haskell HTTP/2 ライブラリから、バッファ操作の部分を切り出して、network-byte-orderというライブラリを作るところから始めました。 その矢先、上司とのミーティングでのこと： 上司「来年度開発室を立ち上げる前に、下期の半年間、現場に行って開発の現場を見てこい」 kazu「いいですけど、他のQUIC実装に遅れをとることになりますが、いいんですか？」 上司「いい。」 という訳で、QUICの開発は中断されました
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