feat: update starscream version to 4.0.6

Cartfile

@@ -1,2 +1,2 @@
 github "leeway1208/MqttCocoaAsyncSocket" "1.0.8"
-github "daltoniam/Starscream" "3.1.1"
+github "daltoniam/Starscream" "4.0.6"

CocoaMQTT.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name        = "CocoaMQTT"
-  s.version     = "2.1.6"
+  s.version     = "2.1.7"
   s.summary     = "MQTT v3.1.1 client library for iOS and OS X written with Swift 5"
   s.homepage    = "https://github.com/emqx/CocoaMQTT"
   s.license     = { :type => "MIT" }
@@ -12,7 +12,7 @@ Pod::Spec.new do |s|
   s.ios.deployment_target = "11.0"
   s.tvos.deployment_target = "10.0"
   # s.watchos.deployment_target = "2.0"
-  s.source   = { :git => "https://github.com/emqx/CocoaMQTT.git", :tag => "2.1.6"}
+  s.source   = { :git => "https://github.com/emqx/CocoaMQTT.git", :tag => "2.1.7"}
   s.default_subspec = 'Core'
 
   s.subspec 'Core' do |ss|
@@ -23,7 +23,7 @@ Pod::Spec.new do |s|
 
   s.subspec 'WebSockets' do |ss|
     ss.dependency "CocoaMQTT/Core"
-    ss.dependency "Starscream", "~> 3.1.1"
+    ss.dependency "Starscream", "~> 4.0.6"
     ss.source_files = "Source/CocoaMQTTWebSocket.swift"
   end
 end

Package.swift

@@ -16,7 +16,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/leeway1208/MqttCocoaAsyncSocket", from: "1.0.8"),
-        .package(url: "https://github.com/daltoniam/Starscream.git", from: "3.1.1"),
+        .package(url: "https://github.com/daltoniam/Starscream.git", from: "4.0.6"),
     ],
     targets: [
         .target(name: "CocoaMQTT",

Source/CocoaMQTTWebSocket.swift

@@ -410,7 +410,7 @@ public extension CocoaMQTTWebSocket {
         }
 
         public init(request: URLRequest) {
-            reference = WebSocket(request: request, protocols: ["mqtt"], stream: FoundationStream())
+            reference = WebSocket(request: request)
             super.init()
             reference.delegate = self
         }
@@ -431,23 +431,35 @@ public extension CocoaMQTTWebSocket {
     }
 }
 
-extension CocoaMQTTWebSocket.StarscreamConnection: SSLTrustValidator {
-    public func isValid(_ trust: SecTrust, domain: String?) -> Bool {
-        guard let delegate = self.delegate else { return false }
-
+extension CocoaMQTTWebSocket.StarscreamConnection: CertificatePinning {
+    public func evaluateTrust(trust: SecTrust, domain: String?, completion: ((PinningState) -> ())) {
+        var result: SecTrustResultType = .unspecified
+        SecTrustEvaluate(trust, &result)
+        let e = CFErrorCreate(kCFAllocatorDefault, "FoundationSecurityError" as NSString?, Int(result.rawValue), nil)
+        guard let delegate = self.delegate else {
+            return completion(.failed(e))
+        }
+
         var shouldAccept = false
         let semaphore = DispatchSemaphore(value: 0)
         delegate.connection(self, didReceive: trust) { result in
             shouldAccept = result
             semaphore.signal()
         }
         semaphore.wait()
-
-        return shouldAccept
+
+        if(shouldAccept){
+            completion(.success)
+        }else{
+            completion(.failed(e))
+        }
     }
 }
 
 extension CocoaMQTTWebSocket.StarscreamConnection: WebSocketDelegate {
+    public func didReceive(event: Starscream.WebSocketEvent, client: Starscream.WebSocketClient) {
+    }
+
 
     public func websocketDidConnect(socket: WebSocketClient) {
         delegate?.connectionOpened(self)