How to write a socket server in iOS - ios

Question

I want to communicate two iOS devices in local area network via socket.
Right now, I am able to communicate with web socket by writing a client side code in iOS, but i want to know there is any way to communicate two iOS devises via socket, so one iOS device work as server and other iOS device work as a client.
For Client side i am using below code:
// MARK:- communication initilaize Methode.
func initNetworkCommunication() {
//Initilize network communication.
host = "192.168.2.15" //Server IP
port = 8788 //Port for communication
Stream.getStreamsToHost(withName: host!, port: port!, inputStream: &inputstream, outputStream: &outputstream)
if ((inputstream != nil) && (outputstream != nil)) {
// connection not failed.
print("Connection to \(host!):\(port!)")
inputstream?.delegate = self
outputstream?.delegate = self
inputstream?.schedule(in: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
outputstream?.schedule(in: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
inputstream?.open()
outputstream?.open()
}
}
And for handling a connection, implement a delegate of StreamDelegate as:
// MARK:- StreamDelegate Methods.
func stream(_ aStream: Stream, handle eventCode: Stream.Event) {
switch eventCode {
case Stream.Event.openCompleted:
print("Connected")
//Make connection connect.
outputstream_Status = true
break
case Stream.Event.hasBytesAvailable:
break
case Stream.Event.hasSpaceAvailable:
break
case Stream.Event.endEncountered:
print("Connection closed by the server.")
//Make connection disconnect.
outputstream_Status = false
//De-Initialize the Stream.
closeNetworkCommunication()
break
case Stream.Event.errorOccurred:
print("Can not connect to the host!")
//Make connection disconnect.
outputstream_Status = false
break
default:
break
}
}
}