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index.js
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index.js
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/*jshint asi:true laxbreak:true */
/* requires node-protoparse (npm install protoparse).
* or just install this using npm install scgi-server */
var net = require('net')
, Parser = require('protoparse')
, EventEmitter = require('events').EventEmitter
module.exports = SCGIServer
function SCGIServer(server, no_buffer) {
if ('number' == typeof server) {
var port = server
server = net.createServer()
server.listen(port)
}
var self = this
EventEmitter.call(this)
server.on('connection', function connectionHandler(socket) {
var headers = {}
, p = Parser.Stream(socket)
.scan('len', ':')
.tap(function(vars) {
if (isNaN(+vars.len)) {
socket.end()
this.stop()
self.emit('request', 'invalid header length in SCGI request', socket)
return }
var len = +vars.len
if (len == 0) {
socket.end()
this.stop()
self.emit('request', 'no headers specified in SCGI request', socket)
return }
this.loop(function(end, vars) {
this.scan('key', new Buffer([0]))
.scan('value', new Buffer([0]))
.tap(function (vars) {
headers[vars.key.toString()] = vars.value
len -= vars.key.length + vars.value.length + 2
if (len == 0) end()
})
})
})
.skip(1) // skip the ,
.tap(function(vars) {
var l = 0
if (headers['CONTENT_LENGTH']) l = +headers['CONTENT_LENGTH'].toString('ascii')
if (isNaN(l)) {
socket.end()
this.stop()
self.emit('request', 'invalid content length header', socket, headers)
return
}
vars.content_length = l
})
if (!no_buffer) p.buffer('data', 'content_length')
p.tap(function(vars) {
self.emit('request', null, socket, function header(n, encoding) {
if (!n) {
var r = {} // format the headers as lower case http headers
Object.keys(headers)
.filter(function(i) {return i.indexOf('HTTP_') === 0})
.forEach(function(k) {r[k.toLowerCase()
.split('_')
.slice(1)
.join('-')] = header(k)})
return r }
return (headers[n] ? (encoding == 'buffer' ? headers[n] :
headers[n].toString(encoding || 'ascii')) : undefined) }, no_buffer ? p._buffer : vars.data)
})
})
return self
}
SCGIServer.prototype = new EventEmitter()