wt_pipe/public/Voice/reconnecting-websocket.js

// MIT License:
//
// Copyright (c) 2010-2012, Joe Walnes
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

/**
 * This behaves like a WebSocket in every way, except if it fails to connect,
 * or it gets disconnected, it will repeatedly poll until it succesfully connects
 * again.
 *
 * It is API compatible, so when you have:
 *   ws = new WebSocket('ws://....');
 * you can replace with:
 *   ws = new ReconnectingWebSocket('ws://....');
 *
 * The event stream will typically look like:
 *  onconnecting
 *  onopen
 *  onmessage
 *  onmessage
 *  onclose // lost connection
 *  onconnecting
 *  onopen  // sometime later...
 *  onmessage
 *  onmessage
 *  etc...
 *
 * It is API compatible with the standard WebSocket API.
 *
 * Latest version: https://github.com/joewalnes/reconnecting-websocket/
 * - Joe Walnes
 */
export default function ReconnectingWebSocket(url, protocols) {
    console.log(url)
    protocols = protocols || []

    // These can be altered by calling code.
    this.debug = false
    this.reconnectInterval = 1000
    this.timeoutInterval = 2000

    var self = this
    var ws
    var forcedClose = false
    var timedOut = false

    this.url = url
    this.protocols = protocols
    this.readyState = WebSocket.CONNECTING
    this.URL = url // Public API

    this.onopen = function (event) {
    }

    this.onclose = function (event) {
    }

    this.onconnecting = function (event) {
    }

    this.onmessage = function (event) {
    }

    this.onerror = function (event) {
    }

    function connect(reconnectAttempt) {
        ws = new WebSocket(url, protocols)
        console.log(123)
        self.onconnecting()
        if (self.debug || ReconnectingWebSocket.debugAll) {
            console.debug('ReconnectingWebSocket', 'attempt-connect', url)
        }

        var localWs = ws
        var timeout = setTimeout(function () {
            if (self.debug || ReconnectingWebSocket.debugAll) {
                console.debug('ReconnectingWebSocket', 'connection-timeout', url)
            }
            timedOut = true
            localWs.close()
            timedOut = false
        }, self.timeoutInterval)

        ws.onopen = function (event) {
            clearTimeout(timeout)
            if (self.debug || ReconnectingWebSocket.debugAll) {
                console.debug('ReconnectingWebSocket', 'onopen', url)
            }
            self.readyState = WebSocket.OPEN
            reconnectAttempt = false
            self.onopen(event)
        }

        ws.onclose = function (event) {
            clearTimeout(timeout)
            ws = null
            if (forcedClose) {
                self.readyState = WebSocket.CLOSED
                self.onclose(event)
            } else {
                self.readyState = WebSocket.CONNECTING
                self.onconnecting()
                if (!reconnectAttempt && !timedOut) {
                    if (self.debug || ReconnectingWebSocket.debugAll) {
                        console.debug('ReconnectingWebSocket', 'onclose', url)
                    }
                    self.onclose(event)
                }
                setTimeout(function () {
                    connect(true)
                }, self.reconnectInterval)
            }
        }
        ws.onmessage = function (event) {
            if (self.debug || ReconnectingWebSocket.debugAll) {
                console.debug('ReconnectingWebSocket', 'onmessage', url, event.data)
            }
            self.onmessage(event)
        }
        ws.onerror = function (event) {
            if (self.debug || ReconnectingWebSocket.debugAll) {
                console.debug('ReconnectingWebSocket', 'onerror', url, event)
            }
            self.onerror(event)
        }
    }
    connect(url)

    this.send = function (data) {
        if (ws) {
            if (self.debug || ReconnectingWebSocket.debugAll) {
                console.debug('ReconnectingWebSocket', 'send', url, data)
            }
            return ws.send(data)
        } else {
            throw 'INVALID_STATE_ERR : Pausing to reconnect websocket'
        }
    }

    this.close = function () {
        forcedClose = true
        if (ws) {
            ws.close()
        }
    }

    /**
                   * Additional public API method to refresh the connection if still open (close, re-open).
                   * For example, if the app suspects bad data / missed heart beats, it can try to refresh.
                   */
    this.refresh = function () {
        if (ws) {
            ws.close()
        }
    }
}

/**
     * Setting this to true is the equivalent of setting all instances of ReconnectingWebSocket.debug to true.
     */
ReconnectingWebSocket.debugAll = false