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| Rev | Author | Line No. | Line |
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| 1 | pmbaty | 1 | // |
| 2 | // ServerHandler.swift |
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| 3 | // GyroMouse |
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| 4 | // |
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| 5 | // Created by Matteo Riva on 07/08/15. |
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| 6 | // Copyright © 2015 Matteo Riva. All rights reserved. |
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| 7 | // |
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| 8 | |||
| 9 | import Cocoa |
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| 10 | import CocoaAsyncSocket |
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| 11 | |||
| 12 | let ServerDidConnectNotification = Notification.Name("ServerDidConnectNotification") |
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| 13 | let ServerDidDisconnectNotification = Notification.Name("ServerDidDisconnectNotification") |
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| 14 | |||
| 15 | protocol ServerHandlerDelegate: AnyObject { |
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| 16 | func serverDidReceivePacket(_ packet: GyroPacket) |
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| 17 | } |
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| 18 | |||
| 19 | class ServerHandler: NSObject, NetServiceDelegate, GCDAsyncSocketDelegate { |
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| 20 | |||
| 21 | weak var delegate: ServerHandlerDelegate? |
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| 22 | |||
| 23 | private var service: NetService? |
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| 24 | private var socket: GCDAsyncSocket? |
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| 25 | |||
| 26 | private let buildNumber: Int = { |
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| 27 | let infoDictionary = Bundle.main.infoDictionary! |
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| 28 | let build = infoDictionary[String(kCFBundleVersionKey)] as! String |
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| 29 | return Int(build)! |
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| 30 | }() |
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| 31 | |||
| 32 | deinit { |
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| 33 | delegate = nil |
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| 34 | |||
| 35 | socket?.setDelegate(nil, delegateQueue: nil) |
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| 36 | socket = nil |
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| 37 | |||
| 38 | service?.delegate = nil |
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| 39 | service = nil |
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| 40 | } |
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| 41 | |||
| 42 | //MARK: - Privates |
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| 43 | |||
| 44 | private func sendNotificationWithName(_ name: Notification.Name, userInfo: [String : Any]?) { |
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| 45 | let center = NotificationCenter.default |
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| 46 | let notif = Notification(name: name, object: self, userInfo: userInfo) |
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| 47 | center.post(notif) |
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| 48 | } |
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| 49 | |||
| 50 | private func parseHeader(_ data: Data) -> UInt64 { |
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| 51 | var headerLength: UInt64 = 0 |
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| 52 | memcpy(&headerLength, (data as NSData).bytes, MemoryLayout<UInt64>.size) |
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| 53 | return headerLength |
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| 54 | } |
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| 55 | |||
| 56 | private func parseBody(_ data: Data) { |
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| 57 | let unarchiver = NSKeyedUnarchiver(forReadingWith: data) |
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| 58 | let packet = unarchiver.decodeObject(forKey: "packet") as! GyroPacket |
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| 59 | unarchiver.finishDecoding() |
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| 60 | |||
| 61 | if packet.minimumVersion <= buildNumber { |
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| 62 | delegate?.serverDidReceivePacket(packet) |
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| 63 | } else { |
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| 64 | endConnection() |
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| 65 | let alert = NSAlert() |
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| 66 | alert.addButton(withTitle: "OK") |
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| 67 | alert.messageText = "vers_incomp".localized |
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| 68 | alert.informativeText = "incomp_message".localized |
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| 69 | alert.alertStyle = .warning |
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| 70 | alert.runModal() |
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| 71 | } |
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| 72 | } |
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| 73 | |||
| 74 | //MARK: - Publics |
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| 75 | |||
| 76 | func endConnection() { |
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| 77 | socket?.disconnect() |
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| 78 | } |
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| 79 | |||
| 80 | func startBroadcast() { |
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| 81 | // Initialize GCDAsyncSocket |
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| 82 | socket = GCDAsyncSocket(delegate: self, delegateQueue: DispatchQueue.main) |
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| 83 | |||
| 84 | // Start Listening for Incoming Connections |
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| 85 | do { |
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| 86 | try socket!.accept(onPort: 0) |
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| 87 | service = NetService(domain: "local.", type: "_gyroserver._tcp.", name: "", port: Int32(socket!.localPort)) |
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| 88 | service!.delegate = self |
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| 89 | service!.publish() |
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| 90 | } catch let error as NSError { |
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| 91 | print("Unable to create socket. Error \(error) with user info \(error.userInfo).", terminator: "\n") |
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| 92 | } |
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| 93 | } |
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| 94 | |||
| 95 | func endBroadcast() { |
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| 96 | socket?.setDelegate(nil, delegateQueue: nil) |
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| 97 | socket = nil |
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| 98 | |||
| 99 | service?.delegate = nil |
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| 100 | service = nil |
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| 101 | } |
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| 102 | |||
| 103 | //MARK: - NSNetServiceDelegate |
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| 104 | |||
| 105 | func netServiceDidPublish(_ sender: NetService) { |
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| 106 | print("Bonjour Service Published: domain(\(sender.domain)) type(\(sender.type)) name(\(sender.name)) port(\(sender.port))", terminator: "\n") |
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| 107 | } |
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| 108 | |||
| 109 | func netService(_ sender: NetService, didNotPublish errorDict: [String : NSNumber]) { |
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| 110 | print("Failed to Publish Service: domain(\(sender.domain)) type(\(sender.type)) name(\(sender.name)) port(\(sender.port))", terminator: "\n") |
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| 111 | } |
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| 112 | |||
| 113 | //MARK: - GCDAsyncSocketDelegate |
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| 114 | |||
| 115 | func socket(_ sock: GCDAsyncSocket, didAcceptNewSocket newSocket: GCDAsyncSocket) { |
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| 116 | print("Accepted New Socket from \(newSocket.connectedHost as Optional):\(newSocket.connectedPort as Optional)", terminator: "\n") |
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| 117 | |||
| 118 | socket = newSocket |
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| 119 | |||
| 120 | // Read Data from Socket |
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| 121 | newSocket.readData(toLength: UInt(MemoryLayout<UInt64>.size), withTimeout: -1.0, tag: 0) |
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| 122 | |||
| 123 | let notif = NSUserNotification() |
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| 124 | notif.title = "connected".localized |
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| 125 | notif.informativeText = "connect_with".localized + ":\(socket!.connectedHost as Optional) " + "completed".localized |
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| 126 | notif.deliveryDate = Date() |
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| 127 | NSUserNotificationCenter.default.scheduleNotification(notif) |
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| 128 | NotificationCenter.default.post(name: ServerDidConnectNotification, object: self) |
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| 129 | } |
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| 130 | |||
| 131 | func socketDidDisconnect(_ sock: GCDAsyncSocket, withError err: Error?) { |
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| 132 | if socket == sock { |
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| 133 | if err != nil { |
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| 134 | print("Socket did disconnect with error \(err as Optional)", terminator: "\n") |
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| 135 | } else { |
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| 136 | print("Socket did disconnect", terminator: "\n") |
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| 137 | } |
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| 138 | |||
| 139 | let notif = NSUserNotification() |
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| 140 | notif.title = "disconnected".localized |
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| 141 | notif.informativeText = "conn_terminated".localized |
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| 142 | notif.deliveryDate = Date() |
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| 143 | NSUserNotificationCenter.default.scheduleNotification(notif) |
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| 144 | |||
| 145 | NotificationCenter.default.post(name: ServerDidDisconnectNotification, object: self) |
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| 146 | |||
| 147 | endBroadcast() |
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| 148 | startBroadcast() |
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| 149 | |||
| 150 | } |
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| 151 | } |
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| 152 | |||
| 153 | func socket(_ sock: GCDAsyncSocket, didRead data: Data, withTag tag: Int) { |
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| 154 | if tag == 0 { |
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| 155 | let bodyLength = parseHeader(data) |
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| 156 | socket?.readData(toLength: UInt(bodyLength), withTimeout: -1, tag: 1) |
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| 157 | } else if tag == 1 { |
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| 158 | parseBody(data) |
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| 159 | socket?.readData(toLength: UInt(MemoryLayout<UInt64>.size), withTimeout: -1, tag: 0) |
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| 160 | } |
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| 161 | } |
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| 162 | |||
| 163 | } |