socket.io-client-swift/SwiftIO/SocketIOClient.swift

//
//  SocketIOClient.swift
//  Socket.IO-Swift
//
//  Created by Erik Little on 11/23/14.
//
//  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.

import Foundation

public class SocketIOClient: NSObject {
    let socketURL:NSMutableString!
    let ackQueue = dispatch_queue_create("ackQueue".cStringUsingEncoding(NSUTF8StringEncoding),
        DISPATCH_QUEUE_SERIAL)
    let handleQueue = dispatch_queue_create("handleQueue".cStringUsingEncoding(NSUTF8StringEncoding),
        DISPATCH_QUEUE_SERIAL)
    let emitQueue = dispatch_queue_create("emitQueue".cStringUsingEncoding(NSUTF8StringEncoding),
        DISPATCH_QUEUE_SERIAL)
    let reconnectAttempts:Int!
    private lazy var params = [String: AnyObject]()
    private var ackHandlers = [SocketAckHandler]()
    private var anyHandler:((AnyHandler) -> Void)?
    private var currentAck = -1
    private var currentReconnectAttempt = 0
    private var forcePolling = false
    private var handlers = [SocketEventHandler]()
    private var waitingData = [SocketEvent]()
    private var paramConnect = false
    private var _secure = false
    private var reconnectTimer:NSTimer?
    var closed = false
    var connected = false
    var connecting = false
    var engine:SocketEngine?
    var nsp:String?
    var reconnects = true
    var reconnecting = false
    var reconnectWait = 10
    var secure:Bool {
        return self._secure
    }
    var sid:String?
    
    public init(socketURL:String, opts:[String: AnyObject]? = nil) {
        var mutURL = RegexMutable(socketURL)
        
        if mutURL["https://"].matches().count != 0 {
            self._secure = true
        }
        
        mutURL = mutURL["http://"] ~= ""
        mutURL = mutURL["https://"] ~= ""
        
        self.socketURL = mutURL
        
        // Set options
        if opts != nil {
            if let reconnects = opts!["reconnects"] as? Bool {
                self.reconnects = reconnects
            }
            
            if let reconnectAttempts = opts!["reconnectAttempts"] as? Int {
                self.reconnectAttempts = reconnectAttempts
            } else {
                self.reconnectAttempts = -1
            }
            
            if let reconnectWait = opts!["reconnectWait"] as? Int {
                self.reconnectWait = abs(reconnectWait)
            }
            
            if let nsp = opts!["nsp"] as? String {
                self.nsp = nsp
            }
            
            if let polling = opts!["forcePolling"] as? Bool {
                self.forcePolling = polling
            }
        } else {
            self.reconnectAttempts = -1
        }
        
        super.init()
        
        self.engine = SocketEngine(client: self, forcePolling: self.forcePolling)
    }
    
    // Closes the socket
    public func close() {
        self.closed = true
        self.connecting = false
        self.connected = false
        self.reconnecting = false
        self.engine?.close()
    }
    
    // Connects to the server
    public func connect() {
        if self.closed {
            println("Warning! This socket was previously closed. This might be dangerous!")
            self.closed = false
        }
        
        self.engine?.open()
    }
    
    // Connect to the server using params
    public func connectWithParams(params:[String: AnyObject]) {
        if self.closed {
            println("Warning! This socket was previously closed. This might be dangerous!")
            self.closed = false
        }
        
        self.params = params
        self.paramConnect = true
        
        self.engine?.open(opts: params)
    }
    
    func didConnect() {
        self.closed = false
        self.connected = true
        self.connecting = false
        self.reconnecting = false
        self.currentReconnectAttempt = 0
        self.reconnectTimer?.invalidate()
        self.reconnectTimer = nil
        
        self.handleEvent("connect", data: nil, isInternalMessage: false)
    }
    
    // Server wants us to die
    func didForceClose() {
        self.closed = true
        self.connected = false
        self.reconnects = false
        self.connecting = false
        self.reconnecting = false
        self.handleEvent("disconnect", data: "closed", isInternalMessage: true)
    }
    
    // Sends a message with multiple args
    // If a message contains binary we have to send those
    // seperately.
    public func emit(event:String, _ args:AnyObject...) {
        if !self.connected {
            return
        }
        
        dispatch_async(self.emitQueue) {[weak self] in
            self?._emit(event, args)
            return
        }
    }
    
    // Objc doesn't have variadics
    public func emitObjc(event:String, _ args:[AnyObject]) {
        self.emit(event, args)
    }

    public func emitWithAck(event:String, _ args:AnyObject...) -> SocketAckHandler {
        if !self.connected {
            return SocketAckHandler(event: "fail")
        }
        
        self.currentAck++
        let ackHandler = SocketAckHandler(event: event, ackNum: self.currentAck)
        self.ackHandlers.append(ackHandler)
        
        dispatch_async(self.emitQueue) {[weak self] in
            self?._emit(event, args, ack: true)
            return
        }
        
        return ackHandler
    }
    
    public func emitWithAckObjc(event:String, _ args:[AnyObject]) -> SocketAckHandler {
        return self.emitWithAck(event, args)
    }
    
    private func _emit(event:String, _ args:[AnyObject], ack:Bool = false) {
        var frame:SocketEvent
        var str:String
        
        let (items, hasBinary, emitDatas) = SocketIOClient.parseEmitArgs(args)
        
        if !self.connected {
            return
        }
        
        if hasBinary {
            if !ack {
                str = SocketEvent.createMessageForEvent(event, withArgs: items,
                    hasBinary: true, withDatas: emitDatas.count, toNamespace: self.nsp)
            } else {
                str = SocketEvent.createMessageForEvent(event, withArgs: items,
                    hasBinary: true, withDatas: emitDatas.count, toNamespace: self.nsp, wantsAck: self.currentAck)
            }
            
            self.engine?.send(str, datas: emitDatas)
        } else {
            if !ack {
                str = SocketEvent.createMessageForEvent(event, withArgs: items, hasBinary: false,
                    withDatas: 0, toNamespace: self.nsp)
            } else {
                str = SocketEvent.createMessageForEvent(event, withArgs: items, hasBinary: false,
                    withDatas: 0, toNamespace: self.nsp, wantsAck: self.currentAck)
            }
            
            self.engine?.send(str)
        }
    }
    
    // If the server wants to know that the client received data
    internal func emitAck(ack:Int, withData data:[AnyObject]?, withAckType ackType:Int) {
        dispatch_async(self.ackQueue) {[weak self] in
            if self == nil || !self!.connected || data == nil {
                return
            }
            
            let (items, hasBinary, emitDatas) = SocketIOClient.parseEmitArgs(data!)
            var str:String
            
            if !hasBinary {
                if self?.nsp == nil {
                    str = SocketEvent.createAck(ack, withArgs: items,
                        withAckType: 3, withNsp: "/")
                } else {
                    str = SocketEvent.createAck(ack, withArgs: items,
                        withAckType: 3, withNsp: self!.nsp!)
                }
                
                self?.engine?.send(str)
            } else {
                if self?.nsp == nil {
                    str = SocketEvent.createAck(ack, withArgs: items,
                        withAckType: 6, withNsp: "/", withBinary: emitDatas.count)
                } else {
                    str = SocketEvent.createAck(ack, withArgs: items,
                        withAckType: 6, withNsp: self!.nsp!, withBinary: emitDatas.count)
                }
                
                self?.engine?.send(str, datas: emitDatas)
            }
        }
    }
    
    // Called when the socket gets an ack for something it sent
    private func handleAck(ack:Int, data:AnyObject?) {
        self.ackHandlers = self.ackHandlers.filter {handler in
            if handler.ackNum != ack {
                return true
            } else {
                if data is NSArray {
                    handler.executeAck(data as? NSArray)
                } else if data != nil {
                    handler.executeAck([data!])
                } else {
                    handler.executeAck(nil)
                }
                
                return false
            }
        }
    }
    
    // Handles events
    public func handleEvent(event:String, data:AnyObject?, isInternalMessage:Bool = false,
        wantsAck ack:Int? = nil, withAckType ackType:Int = 3) {
            // println("Should do event: \(event) with data: \(data)")
            if !self.connected && !isInternalMessage {
                return
            }
            
            dispatch_async(dispatch_get_main_queue()) {[weak self] in
                self?.anyHandler?((event, data))
                return
            }
            for handler in self.handlers {
                if handler.event == event {
                    if data is NSArray {
                        if ack != nil {
                            handler.executeCallback(data as? NSArray, withAck: ack!,
                                withAckType: ackType, withSocket: self)
                        } else {
                            handler.executeCallback(data as? NSArray)
                        }
                    } else {
                        
                        // Trying to do a ternary expression in the executeCallback method
                        // seemed to crash Swift
                        var dataArr:NSArray? = nil
                        
                        if let data:AnyObject = data {
                            dataArr = [data]
                        }
                        
                        if ack != nil {
                            handler.executeCallback(dataArr, withAck: ack!,
                                withAckType: ackType, withSocket: self)
                        } else {
                            handler.executeCallback(dataArr)
                        }
                    }
                }
            }
    }
    
    // Should be removed and moved to SocketEngine
    func joinNamespace() {
        if self.nsp != nil {
            self.engine?.send("0/\(self.nsp!)")
        }
    }
    
    // Adds handler for an event
    public func on(name:String, callback:NormalCallback) {
        let handler = SocketEventHandler(event: name, callback: callback)
        self.handlers.append(handler)
    }
    
    // Adds a handler for any event
    public func onAny(handler:(AnyHandler) -> Void) {
        self.anyHandler = handler
    }
    
    // Opens the connection to the socket
    public func open() {
        self.connect()
    }
    
    // Parse an NSArray looking for binary data
    private class func parseArray(arr:NSArray, var currentPlaceholder:Int) -> (NSArray, Bool, [NSData]) {
        var replacementArr = [AnyObject](count: arr.count, repeatedValue: 1)
        var hasBinary = false
        var arrayDatas = [NSData]()
        
        for g in 0..<arr.count {
            if arr[g] is NSData {
                hasBinary = true
                currentPlaceholder++
                let sendData = arr[g] as NSData
                
                arrayDatas.append(sendData)
                replacementArr[g] = ["_placeholder": true,
                    "num": currentPlaceholder]
            } else if let dict = arr[g] as? NSDictionary {
                let (nestDict, hadBinary, dictArrs) = self.parseNSDictionary(dict,
                    currentPlaceholder: currentPlaceholder)
                
                if hadBinary {
                    hasBinary = true
                    currentPlaceholder += dictArrs.count
                    replacementArr[g] = nestDict
                    arrayDatas.extend(dictArrs)
                } else {
                    replacementArr[g] = dict
                }
            } else if let nestArr = arr[g] as? NSArray {
                // Recursive
                let (nested, hadBinary, nestDatas) = self.parseArray(nestArr,
                    currentPlaceholder: currentPlaceholder)
                
                if hadBinary {
                    hasBinary = true
                    currentPlaceholder += nestDatas.count
                    replacementArr[g] = nested
                    arrayDatas.extend(nestDatas)
                } else {
                    replacementArr[g] = arr[g]
                }
            } else {
                replacementArr[g] = arr[g]
            }
        }
        
        return (replacementArr, hasBinary, arrayDatas)
    }
    
    // Parses data for events
    class func parseData(data:String?) -> AnyObject? {
        if data == nil {
            return nil
        }
        
        var err:NSError?
        let stringData = data!.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
        let parsed:AnyObject? = NSJSONSerialization.JSONObjectWithData(stringData!,
            options: NSJSONReadingOptions.AllowFragments, error: &err)
        
        if err != nil {
            // println(err)
            return nil
        }
        
        return parsed
    }
    
    private class func parseEmitArgs(args:[AnyObject]) -> ([AnyObject], Bool, [NSData]) {
        var items = [AnyObject](count: args.count, repeatedValue: 1)
        var currentPlaceholder = -1
        var hasBinary = false
        var emitDatas = [NSData]()
        
        for i in 0..<args.count {
            if let dict = args[i] as? NSDictionary {
                // Check for binary data
                let (newDict, hadBinary, binaryDatas) = SocketIOClient.parseNSDictionary(dict,
                    currentPlaceholder: currentPlaceholder)
                if hadBinary {
                    currentPlaceholder += binaryDatas.count
                    
                    emitDatas.extend(binaryDatas)
                    hasBinary = true
                    items[i] = newDict
                } else {
                    items[i] = dict
                }
            } else if let arr = args[i] as? NSArray {
                // arg is array, check for binary
                let (replace, hadData, newDatas) = SocketIOClient.parseArray(arr,
                    currentPlaceholder: currentPlaceholder)
                
                if hadData {
                    hasBinary = true
                    currentPlaceholder += newDatas.count
                    
                    for data in newDatas {
                        emitDatas.append(data)
                    }
                    
                    items[i] = replace
                } else {
                    items[i] = arr
                }
            } else if let binaryData = args[i] as? NSData {
                // args is just binary
                hasBinary = true
                
                currentPlaceholder++
                items[i] = ["_placeholder": true, "num": currentPlaceholder]
                emitDatas.append(binaryData)
            } else {
                items[i] = args[i]
            }
        }
        
        return (items, hasBinary, emitDatas)
    }
    
    // Parses a NSDictionary, looking for NSData objects
    private class func parseNSDictionary(dict:NSDictionary, var currentPlaceholder:Int) -> (NSDictionary, Bool, [NSData]) {
        var returnDict = NSMutableDictionary()
        var hasBinary = false
        var returnDatas = [NSData]()
        
        for (key, value) in dict {
            if let binaryData = value as? NSData {
                currentPlaceholder++
                hasBinary = true
                returnDatas.append(binaryData)
                returnDict[key as String] = ["_placeholder": true, "num": currentPlaceholder]
            } else if let arr = value as? NSArray {
                let (replace, hadBinary, arrDatas) = self.parseArray(arr, currentPlaceholder: currentPlaceholder)
                
                if hadBinary {
                    hasBinary = true
                    returnDict[key as String] = replace
                    currentPlaceholder += arrDatas.count
                    returnDatas.extend(arrDatas)
                } else {
                    returnDict[key as String] = arr
                }
            } else if let dict = value as? NSDictionary {
                // Recursive
                let (nestDict, hadBinary, nestDatas) = self.parseNSDictionary(dict, currentPlaceholder: currentPlaceholder)
                
                if hadBinary {
                    hasBinary = true
                    returnDict[key as String] = nestDict
                    currentPlaceholder += nestDatas.count
                    returnDatas.extend(nestDatas)
                } else {
                    returnDict[key as String] = dict
                }
            } else {
                returnDict[key as String] = value
            }
        }
        
        return (returnDict, hasBinary, returnDatas)
    }
    
    // Parses messages recieved
    internal func parseSocketMessage(stringMessage:String) {
        // println(message!)
        
        // Check for successful namepsace connect
        if self.nsp != nil {
            if stringMessage == "0/\(self.nsp!)" {
                self.didConnect()
                return
            }
        }
        
        if stringMessage == "0" {
            if self.nsp != nil {
                // Join namespace
                self.joinNamespace()
                return
            } else {
                // Don't handle as internal because something crazy could happen where
                // we disconnect before it's handled
                self.didConnect()
                return
            }
        }
        
        var mutMessage = RegexMutable(stringMessage)
        
        /**
        Begin check for message
        **/
        let messageGroups = mutMessage["(\\d*)\\/?(\\w*)?,?(\\d*)?(\\[.*\\])?"].groups()
        
        if messageGroups[1].hasPrefix("2") {
            var mesNum = messageGroups[1]
            var ackNum:String
            var namespace:String?
            var messagePart:String!
            
            if messageGroups[3] != "" {
                ackNum = messageGroups[3]
            } else {
                let range = Range<String.Index>(start: mesNum.startIndex, end: advance(mesNum.startIndex, 1))
                mesNum.replaceRange(range, with: "")
                ackNum = mesNum
            }
            
            namespace = messageGroups[2]
            messagePart = messageGroups[4]
            
            if namespace == "" && self.nsp != nil {
                return
            }
            
            let messageInternals = RegexMutable(messagePart)["\\[\"(.*?)\",(.*?)?\\]$"].groups()
            if messageInternals != nil && messageInternals.count > 2 {
                let event = messageInternals[1]
                var data:String?
                
                if messageInternals[2] == "" {
                    data = nil
                } else {
                    data = messageInternals[2]
                }
                
                // It would be nice if socket.io only allowed one thing
                // per message, but alas, it doesn't.
                if let parsed:AnyObject = SocketIOClient.parseData(data) {
                    if ackNum == "" {
                        self.handleEvent(event, data: parsed)
                    } else {
                        self.currentAck = ackNum.toInt()!
                        self.handleEvent(event, data: parsed, isInternalMessage: false,
                            wantsAck: ackNum.toInt(), withAckType: 3)
                    }
                    return
                } else if let strData = data {
                    // There are multiple items in the message
                    // Turn it into a String and run it through
                    // parseData to try and get an array.
                    let asArray = "[\(strData)]"
                    if let parsed:AnyObject = SocketIOClient.parseData(asArray) {
                        if ackNum == "" {
                            self.handleEvent(event, data: parsed)
                        } else {
                            self.currentAck = ackNum.toInt()!
                            self.handleEvent(event, data: parsed, isInternalMessage: false,
                                wantsAck: ackNum.toInt(), withAckType: 3)
                        }
                        return
                    }
                }
            }
            
            // Check for no item event
            let noItemMessage = RegexMutable(messagePart)["\\[\"(.*?)\"]$"].groups()
            if noItemMessage != nil && noItemMessage.count == 2 {
                let event = noItemMessage[1]
                if ackNum == "" {
                    self.handleEvent(event, data: nil)
                } else {
                    self.currentAck = ackNum.toInt()!
                    self.handleEvent(event, data: nil, isInternalMessage: false,
                        wantsAck: ackNum.toInt(), withAckType: 3)
                }
                return
            }
        } else if messageGroups[1].hasPrefix("3") {
            let arr = Array(messageGroups[1])
            var ackNum:String
            let nsp = messageGroups[2]
            
            if nsp == "" && self.nsp != nil {
                return
            }
            
            if nsp == "" {
                ackNum = String(arr[1...arr.count-1])
            } else {
                ackNum = messageGroups[3]
            }
            
            let ackData:AnyObject? = SocketIOClient.parseData(messageGroups[4])
            self.handleAck(ackNum.toInt()!, data: ackData)
            
            return
        }
        /**
        End Check for message
        **/
        
        // Check for message with binary placeholders
        self.parseBinaryMessage(message: stringMessage)
    }
    
    // Tries to parse a message that contains binary
    private func parseBinaryMessage(#message:AnyObject) {
        // println(message)
        if let stringMessage = message as? String {
            var mutMessage = RegexMutable(stringMessage)
            
            /**
            Begin check for binary placeholders
            **/
            let binaryGroup = mutMessage["^(\\d*)-\\/?(\\w*)?,?(\\d*)?\\[(\".*?\")?,?(.*)?\\]$"].groups()
            
            if binaryGroup == nil {
                return
            }
            
            if binaryGroup[1].hasPrefix("5") {
                // println(binaryGroup)
                var ackNum:String
                var event:String
                var mutMessageObject:NSMutableString
                var namespace:String?
                var numberOfPlaceholders:String
                let messageType = RegexMutable(binaryGroup[1])
                
                namespace = binaryGroup[2]
                if binaryGroup[3] != "" {
                    ackNum = binaryGroup[3] as String
                } else if self.nsp == nil && binaryGroup[2] != "" {
                    ackNum = binaryGroup[2]
                } else {
                    ackNum = ""
                }
                
                numberOfPlaceholders = (messageType["5"] ~= "") as String
                event = (RegexMutable(binaryGroup[4])["\""] ~= "") as String
                mutMessageObject = RegexMutable(binaryGroup[5])
                
                if namespace == "" && self.nsp != nil {
                    return
                }
                
                let placeholdersRemoved = mutMessageObject["(\\{\"_placeholder\":true,\"num\":(\\d*)\\})"]
                    ~= "\"~~$2\""
                
                var mes:SocketEvent
                if ackNum == "" {
                    mes = SocketEvent(event: event, args: placeholdersRemoved,
                        placeholders: numberOfPlaceholders.toInt()!)
                } else {
                    self.currentAck = ackNum.toInt()!
                    mes = SocketEvent(event: event, args: placeholdersRemoved,
                        placeholders: numberOfPlaceholders.toInt()!, ackNum: ackNum.toInt())
                }
                
                self.waitingData.append(mes)
            } else if binaryGroup[1].hasPrefix("6") {
                let messageType = RegexMutable(binaryGroup[1])
                let numberOfPlaceholders = (messageType["6"] ~= "") as String
                var ackNum:String
                var nsp:String
                
                if binaryGroup[3] == "" {
                    ackNum = binaryGroup[2]
                    nsp = ""
                } else {
                    ackNum = binaryGroup[3]
                    nsp = binaryGroup[2]
                }
                
                if nsp == "" && self.nsp != nil {
                    return
                }
                var mutMessageObject = RegexMutable(binaryGroup[5])
                let placeholdersRemoved = mutMessageObject["(\\{\"_placeholder\":true,\"num\":(\\d*)\\})"]
                    ~= "\"~~$2\""
                
                let event = SocketEvent(event: "", args: placeholdersRemoved,
                    placeholders: numberOfPlaceholders.toInt()!, ackNum: ackNum.toInt(), justAck: true)
                
                self.waitingData.append(event)
            }
            /**
            End check for binary placeholders
            **/
        }
    }
    
    // Handles binary data
    internal func parseBinaryData(data:NSData) {
        let shouldExecute = self.waitingData[0].addData(data)
        
        if shouldExecute {
            let socketEvent = self.waitingData.removeAtIndex(0)
            var event = socketEvent.event
            var parsedArgs:AnyObject? = SocketIOClient.parseData(socketEvent.args as? String)
            
            if let args:AnyObject = parsedArgs {
                let filledInArgs:AnyObject = socketEvent.fillInPlaceholders(args)
                
                if socketEvent.justAck! {
                    // Should handle ack
                    self.handleAck(socketEvent.ack!, data: filledInArgs)
                    return
                }
                
                // Should do event
                if socketEvent.ack != nil {
                    self.handleEvent(event, data: filledInArgs, isInternalMessage: false,
                        wantsAck: socketEvent.ack!, withAckType: 6)
                } else {
                    self.handleEvent(event, data: filledInArgs)
                }
            } else {
                let filledInArgs:AnyObject = socketEvent.fillInPlaceholders()
                
                // Should handle ack
                if socketEvent.justAck! {
                    self.handleAck(socketEvent.ack!, data: filledInArgs)
                    return
                }
                
                // Should handle ack
                if socketEvent.ack != nil {
                    self.handleEvent(event, data: filledInArgs, isInternalMessage: false,
                        wantsAck: socketEvent.ack!, withAckType: 6)
                } else {
                    self.handleEvent(event, data: filledInArgs)
                }
            }
        }
    }
    
    // Something happened while polling
    internal func pollingDidFail(err:NSError?) {
        if !self.reconnecting {
            self.connected = false
            self.handleEvent("reconnect", data: err?.localizedDescription, isInternalMessage: true)
            self.tryReconnect()
        }
    }
    
    // We lost connection and should attempt to reestablish
    internal func tryReconnect() {
        if self.reconnectAttempts != -1 && self.currentReconnectAttempt + 1 > self.reconnectAttempts {
            self.didForceClose()
            return
        } else if self.connected {
            self.connecting = false
            self.reconnecting = false
            return
        }
        
        if self.reconnectTimer == nil {
            self.reconnecting = true
            dispatch_async(dispatch_get_main_queue()) {[weak self] in
                if self == nil {
                    return
                }
                
                self?.reconnectTimer = NSTimer.scheduledTimerWithTimeInterval(Double(self!.reconnectWait),
                    target: self!, selector: "tryReconnect", userInfo: nil, repeats: true)
                return
            }
        }
        
        self.handleEvent("reconnectAttempt", data: self.reconnectAttempts - self.currentReconnectAttempt,
            isInternalMessage: true)
        
        self.currentReconnectAttempt++
        if self.paramConnect {
            self.connectWithParams(self.params)
        } else {
            self.connect()
        }
    }
    
    // Called when the socket is closed
    func webSocketDidCloseWithCode(code:Int, reason:String!, wasClean:Bool) {
        self.connected = false
        self.connecting = false
        if self.closed || !self.reconnects {
            self.didForceClose()
        } else {
            self.handleEvent("reconnect", data: reason, isInternalMessage: true)
            self.tryReconnect()
        }
    }
    
    // Called when an error occurs.
    func webSocketDidFailWithError(error:NSError!) {
        self.connected = false
        self.connecting = false
        self.handleEvent("error", data: error.localizedDescription, isInternalMessage: true)
        if self.closed || !self.reconnects {
            self.didForceClose()
        } else if !self.reconnecting {
            self.handleEvent("reconnect", data: error.localizedDescription, isInternalMessage: true)
            self.tryReconnect()
        }
    }
}