Simon Willison’s Weblog

Items tagged http, comet

Filters: http × comet ×


Real time online activity monitor example with node.js and WebSocket. A neat exploration of Node.js—first hooking a “tail -f” process up to an HTTP push stream, then combining that with HTML 5 WebSockets to achieve reliable streaming. # 8th December 2009, 11:07 pm

Node.js is genuinely exciting

I gave a talk on Friday at Full Frontal, a new one day JavaScript conference in my home town of Brighton. I ended up throwing away my intended topic (JSONP, APIs and cross-domain security) three days before the event in favour of a technology which first crossed my radar less than two weeks ago.

[... 2009 words]

SPDY: The Web, Only Faster. Alex Russell explains the benefits of Google’s SPDF proposal (a protocol that upgrades HTTP)—including header compression, multiplexing, the ability to send additional resources such as images and stylesheets down without needing the data:uri hack and Comet support built in to the core assumptions of the protocol. # 13th November 2009, 1 pm

ptth (Reverse HTTP) implementation in a browser using Long Poll COMET. Donovan Preston experiments with the cleverly named idea of ptth, where servers send HTTP requests to clients. # 8th December 2008, 5:22 pm

Enough Already with the Connections! Comet doesn’t mean making long-lived HTTP connections (which most browsers do anyway thanks to HTTP keep-alive), it means making long-held HTTP requests. I’m guilty of spreading this misinformation in the past. # 30th June 2008, 9:27 am

A Taxonomy of Event- and REST-based Comet. Kris Zyp describes a conceptual model for Comet messages based on REST semantics (so you can send a PUT referencing a specific URI down to a client to represent an idempotent state change). # 21st November 2007, 8:18 pm

Orbited: The Orbit Event Daemon. HTTP daemon designed for long-lasting comet connections, written in Python using pyevent on top of libevent. # 9th November 2007, 11:01 pm