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// | |
// HarmonyDiscovery.swift | |
// XMPPFun | |
// | |
// Created by Joshua Weinberg on 4/25/15. | |
// Copyright (c) 2015 Joshua Weinberg. All rights reserved. | |
// | |
import Foundation | |
@objc public class HarmonyDiscovery : NSObject { | |
private let _socketQueue: dispatch_queue_t | |
private let _timer: dispatch_source_t | |
private var _socketSource: dispatch_source_t? | |
override init() { | |
_socketQueue = dispatch_queue_create("com.jweinberg.socket", DISPATCH_QUEUE_SERIAL) | |
_timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, dispatch_get_main_queue()); | |
} | |
private func readDeviceInformation(data: NSData) -> [String:String] { | |
if let string = NSString(bytes: data.bytes, length: data.length, encoding: NSUTF8StringEncoding) as? String { | |
var deviceInformation = [String:String]() | |
for source in string.componentsSeparatedByString(";") { | |
let pair = source.componentsSeparatedByString(":") | |
if pair.count > 1 { | |
deviceInformation[pair[0]] = pair[1] | |
} | |
} | |
return deviceInformation | |
} | |
return [:] | |
} | |
public func startDiscovery(callback: ([String:String]?) -> ()) { | |
var server = sockaddr_in() | |
server.sin_family = sa_family_t(AF_INET) | |
server.sin_addr = in_addr(s_addr: 0) | |
server.sin_port = CFSwapInt16HostToBig(58391) | |
let tcpsock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) | |
_socketSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, UInt(tcpsock), 0, _socketQueue) | |
setsockopt(tcpsock, SOL_SOCKET, SO_REUSEADDR, &server, socklen_t(sizeof(sockaddr_in))) | |
var saddr = unsafeBitCast(server, sockaddr.self) | |
bind(tcpsock, &saddr, socklen_t(sizeof(sockaddr))) | |
dispatch_source_set_event_handler(_socketSource!) { | |
let data = NSMutableData() | |
var buff = [UInt8](count: 1024, repeatedValue: 0) | |
let accepted = accept(tcpsock, nil, nil) | |
var count = 0; | |
do { | |
count = read(accepted, &buff, 1024) | |
data.appendBytes(buff, length: count) | |
} while count > 0 | |
callback(self.readDeviceInformation(data)) | |
} | |
dispatch_resume(_socketSource!) | |
listen(tcpsock, 1024) | |
var bPort = sockaddr_in() | |
bPort.sin_family = sa_family_t(AF_INET) | |
var bAddr = in_addr() | |
inet_pton(AF_INET, "192.168.2.255", &bAddr) | |
bPort.sin_addr = bAddr | |
bPort.sin_port = CFSwapInt16HostToBig(5224) | |
let sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) | |
// set socket options enable broadcast | |
var broadcastEnable = 1 | |
setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &broadcastEnable, socklen_t(sizeof(Int))) | |
dispatch_source_set_timer(_timer, DISPATCH_TIME_NOW, 5 * NSEC_PER_SEC, NSEC_PER_SEC / 10) | |
dispatch_source_set_event_handler(_timer) { | |
let request = "_logitech-reverse-bonjour._tcp.local.\n58391"; | |
let buf = [UInt8](request.utf8) | |
var bAddr = unsafeBitCast(bPort, sockaddr.self) | |
sendto(sock, buf, Int(count(buf)), Int32(0), &bAddr, socklen_t(sizeof(sockaddr_in))) | |
} | |
dispatch_resume(_timer) | |
} | |
} |
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