Möglicher Lösungsansatz vom Code |
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Hiermit könnte man eventuell die Umsetzung mit Javascript realisieren.
Hier sieht man eine Lösung welches es ermöglicht UDP sockets in Javascript zu implementieren.
// Copyright (c) 2014 The Chromium Authors. All rights reserved. | |
// Use of this source code is governed by a BSD-style license that can be | |
// found in the LICENSE file. | |
var Event = require('cordova-plugin-chrome-apps-common.events'); | |
var platform = cordova.require('cordova/platform'); | |
var exec = cordova.require('cordova/exec'); | |
var callbackWithError = require('cordova-plugin-chrome-apps-common.errors').callbackWithError; | |
var checkBufferSize = function(bufferSize) { | |
if (bufferSize === null) | |
return; | |
if (bufferSize > 65535) { | |
console.warn('Buffer size exceeds IPv4 UDP 65535 size limit.'); | |
} | |
if (bufferSize > 4294967295) { | |
console.warn('Buffer size exceeds IPv6 UDP 4294967295 size limit.'); | |
} | |
}; | |
exports.create = function(properties, callback) { | |
if (typeof properties == 'function') { | |
callback = properties; | |
properties = {}; | |
} | |
var win = callback && function(socketId) { | |
var createInfo = { | |
socketId: socketId | |
}; | |
callback(createInfo); | |
}; | |
checkBufferSize(properties.bufferSize); | |
exec(win, null, 'ChromeSocketsUdp', 'create', [properties]); | |
}; | |
exports.update = function(socketId, properties, callback) { | |
checkBufferSize(properties.bufferSize); | |
exec(callback, null, 'ChromeSocketsUdp', 'update', [socketId, properties]); | |
}; | |
exports.setPaused = function(socketId, paused, callback) { | |
exec(callback, null, 'ChromeSocketsUdp', 'setPaused', [socketId, paused]); | |
}; | |
exports.bind = function(socketId, address, port, callback) { | |
var win = callback && function() { | |
callback(0); | |
}; | |
var fail = callback && function(error) { | |
callbackWithError(error.message, callback, error.resultCode); | |
}; | |
exec(win, fail, 'ChromeSocketsUdp', 'bind', [socketId, address, port]); | |
}; | |
exports.send = function(socketId, data, address, port, callback) { | |
var type = Object.prototype.toString.call(data).slice(8, -1); | |
if (type != 'ArrayBuffer') { | |
throw new Error('chrome.sockets.udp.send - data is not an ArrayBuffer! (Got: ' + type + ')'); | |
} | |
var win = callback && function(bytesSent) { | |
var sendInfo = { | |
bytesSent: bytesSent, | |
resultCode: 0 | |
}; | |
callback(sendInfo); | |
}; | |
var fail = callback && function(error) { | |
var sendInfo = { | |
bytesSent: 0, | |
resultCode: error.resultCode | |
}; | |
callbackWithError(error.message, callback, sendInfo); | |
}; | |
exec(win, fail, 'ChromeSocketsUdp', 'send', [socketId, address, port, data]); | |
}; | |
exports.close = function(socketId, callback) { | |
exec(callback, null, 'ChromeSocketsUdp', 'close', [socketId]); | |
}; | |
exports.getInfo = function(socketId, callback) { | |
var win = callback && function(result) { | |
result.persistent = !!result.persistent; | |
result.paused = !!result.paused; | |
callback(result); | |
}; | |
exec(win, null, 'ChromeSocketsUdp', 'getInfo', [socketId]); | |
}; | |
exports.getSockets = function(callback) { | |
var win = callback && function(results) { | |
for (var result in results) { | |
result.persistent = !!result.persistent; | |
result.paused = !!result.paused; | |
} | |
callback(results); | |
}; | |
exec(win, null, 'ChromeSocketsUdp', 'getSockets', []); | |
}; | |
exports.setBroadcast = function(socketId, enabled, callback) { | |
var win = callback && function() { | |
callback(0); | |
}; | |
var fail = callback && function(error) { | |
callback(error.message, callback, error.resultCode); | |
}; | |
exec(win, fail, 'ChromeSocketsUdp', 'setBroadcast', [socketId, enabled]); | |
}; | |
exports.joinGroup = function(socketId, address, callback) { | |
var win = callback && function() { | |
callback(0); | |
}; | |
var fail = callback && function(error) { | |
callback(error.message, callback, error.resultCode); | |
}; | |
exec(win, fail, 'ChromeSocketsUdp', 'joinGroup', [socketId, address]); | |
}; | |
exports.leaveGroup = function(socketId, address, callback) { | |
var win = callback && function() { | |
callback(0); | |
}; | |
var fail = callback && function(error) { | |
callback(error.message, callback, error.resultCode); | |
}; | |
exec(win, fail, 'ChromeSocketsUdp', 'leaveGroup', [socketId, address]); | |
}; | |
exports.setMulticastTimeToLive = function(socketId, ttl, callback) { | |
var win = callback && function() { | |
callback(0); | |
}; | |
var fail = callback && function(error) { | |
callback(error.message, callback, error.resultCode); | |
}; | |
exec(win, fail, 'ChromeSocketsUdp', 'setMulticastTimeToLive', [socketId, ttl]); | |
}; | |
exports.setMulticastLoopbackMode = function(socketId, enabled, callback) { | |
var win = callback && function() { | |
callback(0); | |
}; | |
var fail = callback && function(error) { | |
callback(error.message, callback, error.resultCode); | |
}; | |
exec(win, fail, 'ChromeSocketsUdp', 'setMulticastLoopbackMode', [socketId, enabled]); | |
}; | |
exports.getJoinedGroups = function(socketId, callback) { | |
exec(callback, null, 'ChromeSocketsUdp', 'getJoinedGroups', [socketId]); | |
}; | |
exports.onReceive = new Event('onReceive'); | |
exports.onReceiveError = new Event('onReceiveError'); | |
function registerReceiveEvents() { | |
var win = function() { | |
var info = { | |
socketId: arguments[0], | |
data: arguments[1], | |
remoteAddress: arguments[2], | |
remotePort: arguments[3] | |
}; | |
exports.onReceive.fire(info); | |
}; | |
// TODO: speical callback for android, DELETE when multipart result for | |
// android is avaliable | |
if (platform.id == 'android') { | |
win = (function() { | |
var data; | |
var call = 0; | |
return function(arg) { | |
if (call === 0) { | |
data = arg; | |
call++; | |
} else { | |
var info = { | |
socketId: arg.socketId, | |
data: data, | |
remoteAddress: arg.remoteAddress, | |
remotePort: arg.remotePort | |
}; | |
call = 0; | |
exports.onReceive.fire(info); | |
} | |
}; | |
})(); | |
} | |
var fail = function(info) { | |
var error = function() { | |
exports.onReceiveError.fire(info); | |
}; | |
callbackWithError(info.message, error); | |
}; | |
exec(win, fail, 'ChromeSocketsUdp', 'registerReceiveEvents', []); | |
} | |
require('cordova-plugin-chrome-apps-common.helpers').runAtStartUp(registerReceiveEvents); |