IOS swift Web Socket SRWebSocket set response timeout - ios

Question

I am using SRWebSocket/SocketRocket library in my app I am unable to set response timeout for it . I want to show a message if socket does not receive any data after few seconds
Following is my code
socketRocket = SRWebSocket(url: URL(string: streamUrl)!)
socketRocket?.delegate = self
socketRocket?.open()
Using following callback methods as well
func webSocketDidOpen(_ webSocket: SRWebSocket!) {
print("webSocketDidOpen")
showTableView()
}
func webSocket(_ webSocket: SRWebSocket!, didCloseWithCode code: Int, reason: String!, wasClean: Bool) {
getConversationId()
}
func webSocket(_ webSocket: SRWebSocket!, didFailWithError error: Error!) {
print("didFailWithError\(error)")
showLErrorView()
}
func webSocket(_ webSocket: SRWebSocket!, didReceiveMessage message: Any!) {
}
here is link to library
https://github.com/facebook/SocketRocket

Answer 1

If you want to display some message when you don't get a response you can use a Timer, the basics it looks like that:
var timer: Timer?
var responseTimeout: TimeInterval = 15
func startTimer() {
timer?.invalidate()
timer = Timer.scheduledTimer(withTimeInterval: responseTimeout, repeats: false, block: {[weak self] timer in
self?.onResponseTimeout()
})
}
func onResponseTimeout() {
print("Didn't get response")
}
func webSocket(_ webSocket: SRWebSocket!, didReceiveMessage message: Any!) {
print(message)
timer?.invalidate() //invalidate timer when you get a message
}
and then you can call startTimer() when it is needed i.e. when the socket is opened:
func webSocketDidOpen(_ webSocket: SRWebSocket!) {
print("webSocketDidOpen")
showTableView()
startTimer()
}
or after you send a message:
socketRocket?.send(message)
startTimer()
If you also want to set a timeout for connection (it is something separate from resopone timout), you can use URLRequest instead of URL:
let request = URLRequest(url: url, timeoutInterval: 30) //it is 30 sec connection timeout
socketRocket = SRWebSocket(urlRequest: request)
socketRocket?.delegate = self
socketRocket?.open()
Full class that supports both connection and response timeout:
import Foundation
import SocketRocket
class WebSocket: NSObject, SRWebSocketDelegate {
var socketRocket: SRWebSocket?
var timer: Timer?
var responseTimeout: TimeInterval = 15
func open(url: URL, connectionTimeout: TimeInterval = 10) {
let request = URLRequest(url: url, timeoutInterval: connectionTimeout)
socketRocket = SRWebSocket(urlRequest: request)
socketRocket?.delegate = self
socketRocket?.open()
}
func send(message: String) {
socketRocket?.send(message)
startTimer()
}
func startTimer() {
timer?.invalidate()
timer = Timer.scheduledTimer(withTimeInterval: responseTimeout, repeats: false, block: {[weak self] timer in
self?.onResponseTimeout()
})
}
func onResponseTimeout() {
print("Didn't get response")
}
func webSocketDidOpen(_ webSocket: SRWebSocket!) {
print("webSocketDidOpen")
startTimer()
}
func webSocket(_ webSocket: SRWebSocket!, didCloseWithCode code: Int, reason: String!, wasClean: Bool) {
print("closed with code: \(code), reason: \(reason), wasClean: \(wasClean)")
timer?.invalidate()
}
func webSocket(_ webSocket: SRWebSocket!, didFailWithError error: Error!) {
print("didFailWithError\(error)")
timer?.invalidate()
}
func webSocket(_ webSocket: SRWebSocket!, didReceiveMessage message: Any!) {
print(message)
timer?.invalidate()
}
}