所有资源来自github
swift socket资源
socketio/socket.io-client-swift
swiftsocket/SwiftSocket
AlwaysRightInstitute/SwiftSockets
由于各种问题，我不知道什么问题，反正各种问题各种换最终选择了：
CocoaAsyncSocket
github地址 https://github.com/robbiehanson/CocoaAsyncSocket
使用总结：
1、下载 AsyncSocket
2、导入 CFNetwork.framework
3、实现 AsyncSocketDelegate
关键代码，创建socket客户端，连接服务器
var socket:AsyncSocket!
socket = AsyncSocket(delegate: self)
try! socket.connectToHost(tcpip, onPort: tcpport , withTimeout: intervalEnum.connect.rawValue)
socket.setRunLoopModes([NSRunLoopCommonModes])重写代理中的方法，添加心跳
func onSocket(sock: AsyncSocket!, didConnectToHost host: String!, port: UInt16) {
print("didConnectToHost \(host) \(port)")
sock.readDataWithTimeout(intervalEnum.read.rawValue, tag: tagEnum.heart.hashValue)
timer = NSTimer.scheduledTimerWithTimeInterval(intervalEnum.timer.rawValue, target: self, selector: "timerAction:", userInfo: nil, repeats: true)
timer.fire()
}心跳实现及数据发送
func timerAction(sender:AnyObject?){
print("timerAction")
let long = "我是心跳\n"
let data = long.dataUsingEncoding(NSUTF8StringEncoding)
socket.writeData(data, withTimeout: intervalEnum.write.rawValue, tag: tagEnum.heart.hashValue)
}读取数据
func onSocket(sock: AsyncSocket!, didWriteDataWithTag tag: Int) {
print("didWriteDataWithTag \(tag)")
sock.readDataWithTimeout(intervalEnum.read.rawValue, tag: tagEnum.heart.hashValue)
}
func onSocket(sock: AsyncSocket!, didReadData data: NSData!, withTag tag: Int) {
let str = NSString(data: data, encoding: NSUTF8StringEncoding)
print("didReadData \(tag) \(str)")
sock.readDataWithTimeout(intervalEnum.read.rawValue, tag: tagEnum.heart.hashValue)
}其中各种关系好没有理清楚，先总结下