swift - How to give and parse data from swift? - ios

Question

I'm a socket project in swift. I try to give data that are JSON and Parse them but i have two problem:
1- when I received data are incomplete and return nil value for some bytes.
2- I don't know when The receiving data ends. I receive data in NSSTreamEvent.hasBytesAvailable but never run the NSStreamEvent.EndEncountered and after some moments the code was error and app crashed.
3- My socket 2 times open while I call them 1 time...
There is my code :
import Foundation
class SocketManager : NSObject , NSStreamDelegate {
let ip = "192.168.1.12"
let port = 6969
let introduceStr = ["Type" : 4 , "MobileID" : 2 , "Introduce" : ["ExKey" : 123]]
let jsonParser = JsonMaker() // This is a class for convert string to json
var inputStream : NSInputStream?
var outputStream : NSOutputStream?
var openedSocket = Int()
var total = NSString()
override init() {
openedSocket = 0
}
func openSocket() {
NSStream.getStreamsToHostWithName(ip, port: port, inputStream: &inputStream, outputStream: &outputStream)
let inputStatus : NSStreamStatus = (inputStream?.streamStatus)!
let outputStatus : NSStreamStatus = (outputStream?.streamStatus)!
if inputStatus != NSStreamStatus.Reading && inputStatus != NSStreamStatus.Open && inputStatus != NSStreamStatus.Opening && outputStatus != NSStreamStatus.Writing && outputStatus != NSStreamStatus.Open && outputStatus != NSStreamStatus.Opening {
inputStream?.delegate = self
outputStream?.delegate = self
inputStream?.scheduleInRunLoop(.mainRunLoop(), forMode: NSDefaultRunLoopMode)
outputStream?.scheduleInRunLoop(.mainRunLoop(), forMode: NSDefaultRunLoopMode)
inputStream?.open()
outputStream?.open()
}
}
func tryOpen() {
inputStream?.close()
outputStream?.close()
inputStream?.removeFromRunLoop(.mainRunLoop(), forMode: NSDefaultRunLoopMode)
outputStream?.removeFromRunLoop(.mainRunLoop(), forMode: NSDefaultRunLoopMode)
performSelector("openSocket", withObject: nil, afterDelay: 5)
}
func closeSocket() {
inputStream?.removeFromRunLoop(.mainRunLoop(), forMode: NSDefaultRunLoopMode)
outputStream?.removeFromRunLoop(.mainRunLoop(), forMode: NSDefaultRunLoopMode)
inputStream?.close()
outputStream?.close()
performSelector("openSocket", withObject: nil, afterDelay: 15)
}
func getData(aStream : NSStream) {
if (aStream == inputStream) {
let MAXSIZE = 1024 * 8
var allLength = Int()
var buffer = [UInt8](count: MAXSIZE , repeatedValue: 0)
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), { () -> Void in
while self.inputStream?.hasBytesAvailable == true {
let readBytes = self.inputStream?.read(&buffer, maxLength: sizeofValue(buffer))
allLength += readBytes!
if readBytes > 0 {
let data : NSData = NSData(bytes: &buffer, length: sizeofValue(buffer))
if let str = NSString(data: data, encoding: NSUTF8StringEncoding) {
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.total = (self.total as String) + (str as String)
})
}
}
}
})
}
}
func sendData(message : NSString ) -> Int{
if openedSocket == 0 {
return -1
} else {
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), { () -> Void in
let data : NSData = message.dataUsingEncoding(NSUTF8StringEncoding)!
var buffer = [UInt8](count: (data.length), repeatedValue: 0)
data.getBytes(&buffer, length: buffer.count)
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.outputStream!.write(&buffer, maxLength: (data.length))
})
})
return 1
}
}
func introduce() {
if openedSocket == 1{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), { () -> Void in
let str = self.jsonParser.dictionaryToJson(self.introduceStr)
let data : NSData = str.dataUsingEncoding(NSUTF8StringEncoding)!
var buffer = [UInt8](count: (data.length), repeatedValue: 0)
data.getBytes(&buffer, length: buffer.count)
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.outputStream!.write(&buffer, maxLength: (data.length))
print("the output introducing is finised")
})
})
} else {
tryOpen()
}
}
func stream(aStream: NSStream, handleEvent eventCode: NSStreamEvent) {
switch eventCode {
case NSStreamEvent.ErrorOccurred :
print("This is the Errorrr")
break
case NSStreamEvent.OpenCompleted :
openedSocket = 1
performSelector("introduce", withObject: nil, afterDelay: 0.3)
break
case NSStreamEvent.HasBytesAvailable :
getData(aStream)
break
case NSStreamEvent.EndEncountered :
print(total)
break
default :
break
}
}
}