Created
March 16, 2012 22:42
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Running a node.js REPL over `curl`
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/** | |
* Requires node v0.7.7 or greater. | |
* | |
* To connect: $ curl -sSNT. localhost:8000 | |
*/ | |
var http = require('http') | |
, repl = require('repl') | |
, buf0 = new Buffer([0]) | |
var server = http.createServer(function (req, res) { | |
res.setHeader('content-type', 'multipart/octet-stream') | |
res.write('Welcome to the Fun House\r\n') | |
repl.start({ | |
prompt: 'curl repl> ' | |
, input: req | |
, output: res | |
, terminal: false | |
, useColors: true | |
, useGlobal: false | |
}) | |
// log | |
console.log(req.headers['user-agent']) | |
// hack to thread stdin and stdout | |
// simultaneously in curl's single thread | |
var iv = setInterval(function () { | |
res.write(buf0) | |
}, 100) | |
res.connection.on('end', function () { | |
clearInterval(iv) | |
}) | |
}) | |
server.listen(8000) |
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☮ ~ (master) ⚡ curl -sSNT. localhost:8000 | |
Welcome to the Fun House | |
curl repl> process.platform | |
'darwin' | |
curl repl> process.arch | |
'x64' | |
curl repl> process.cwd() | |
'/Users/nrajlich' | |
curl repl> path | |
{ resolve: [Function], | |
normalize: [Function], | |
join: [Function], | |
relative: [Function], | |
dirname: [Function], | |
basename: [Function], | |
extname: [Function], | |
_makeLong: [Function] } | |
curl repl> ^C | |
☮ ~ (master) ⚡ |
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On Ubuntu 20.04, curl takes a lot of CPU resources (more then 25%) to run this example.