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Brainstorming read/write socket implementations.
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'use strict'; | |
var ToughSocket = require('./socket'); | |
var socket = new ToughSocket(8124, 'localhost', { resetTimeout: 1000 }); | |
socket.on('data', function (chunk) { | |
console.log('read', chunk.toString('utf8')); | |
}); | |
(function write() { | |
socket.write('foo', function (err) { | |
console.log(err || 'write foo'); | |
setTimeout(write, 10); | |
}); | |
})(); |
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'use strict'; | |
var Net = require('net'); | |
var Util = require('util'); | |
var Levee = require('./'); | |
var Events = require('events'); | |
function ToughSocket(port, host, options) { | |
ToughSocket.super_.apply(this); | |
var self = this; | |
this._ended = false; | |
this._port = port || 24224; | |
this._host = host || 'localhost'; | |
this._socket = null; | |
this._read = Levee.createEmitterBreaker(Object.create(this, { | |
_socket: { | |
get: function () { | |
return self._socket; | |
}, | |
set: function (value) { | |
self._socket = value; | |
} | |
}, | |
execute: { | |
value: function (/*bytes, cb*/) { | |
var args, cb; | |
args = Array.prototype.slice.call(arguments); | |
cb = args.pop(); | |
cb(null, this.read.apply(this, args)); | |
} | |
} | |
}), options); | |
this._write = Levee.createEmitterBreaker(Object.create(this, { | |
_socket: { | |
get: function () { | |
return self._socket; | |
}, | |
set: function (value) { | |
self._socket = value; | |
} | |
}, | |
execute: { | |
value: function write(data, cb) { | |
this.write(data, cb); | |
} | |
} | |
}), options); | |
} | |
Util.inherits(ToughSocket, Events.EventEmitter); | |
ToughSocket.prototype.read = function (size, cb) { | |
this._read.run.apply(this._read, arguments); | |
}; | |
ToughSocket.prototype.write = function (data, cb) { | |
this._write.run(data, cb); | |
}; | |
ToughSocket.prototype.end = function (data) { | |
this.write(data, Function.prototype); | |
this._ended = true; | |
if (this._socket) { | |
this._socket.end(); | |
} | |
}; | |
ToughSocket.prototype.getInstance = function (cb) { | |
var self = this; | |
if (this._ended) { | |
cb(null, null); | |
return; | |
} | |
function onerror(err) { | |
self._socket.destroy(); | |
self._socket = null; | |
setImmediate(function () { | |
cb(err); | |
}); | |
} | |
if (this._socket && !this._socket.writable) { | |
this._socket.destroy(); | |
this._socket = null; | |
this.getInstance(cb); | |
return; | |
} | |
if (!this._socket) { | |
console.log('create'); | |
this._socket = new Net.Socket(); | |
this._socket.once('error', onerror); | |
this._socket.on('data', this.emit.bind(this, 'data')); | |
this._socket.connect(this._port, this._host, function () { | |
this.removeListener('error', onerror); | |
cb(null, this); | |
}); | |
return; | |
} | |
setImmediate(function () { | |
cb(null, self._socket); | |
}); | |
}; | |
module.exports = ToughSocket; |
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var net = require('net'); | |
var server = net.createServer(function(c) { //'connection' listener | |
console.log('server connected'); | |
c.on('end', function() { | |
console.log('server disconnected'); | |
}); | |
c.write('hello\r\n'); | |
c.pipe(c); | |
}); | |
server.listen(8124, function() { //'listening' listener | |
console.log('server bound'); | |
}); |
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