refactor: delete CocoaMQTTDelegate func mqtt(_ mqtt: CocoaMQTT, didConnect host: String, port: Int)

Author: alexyu1989

Example/Example.xcodeproj/project.pbxproj

@@ -160,7 +160,7 @@
 				TargetAttributes = {
 					04DB76531C1E7BB900776B4C = {
 						CreatedOnToolsVersion = 7.1.1;
-						DevelopmentTeam = 43Z4G3YJ6R;
+						DevelopmentTeam = 2Z2KAMMN28;
 						LastSwiftMigration = 0800;
 					};
 				};
@@ -375,6 +375,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				DEVELOPMENT_TEAM = 2Z2KAMMN28;
 				INFOPLIST_FILE = Example/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
@@ -393,6 +394,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				DEVELOPMENT_TEAM = 2Z2KAMMN28;
 				INFOPLIST_FILE = Example/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";

Example/Example/ViewController.swift

@@ -121,10 +121,6 @@ class ViewController: UIViewController {
 }
 
 extension ViewController: CocoaMQTTDelegate {
-    func mqtt(_ mqtt: CocoaMQTT, didConnect host: String, port: Int) {
-        print("didConnect \(host):\(port)")
-    }
-    
     // Optional ssl CocoaMQTTDelegate
     func mqtt(_ mqtt: CocoaMQTT, didReceive trust: SecTrust, completionHandler: @escaping (Bool) -> Void) {
         /// Validate the server certificate

Source/CocoaMQTT.swift

@@ -57,7 +57,8 @@ fileprivate enum CocoaMQTTReadTag: Int {
  */
 @objc public protocol CocoaMQTTDelegate {
     /// MQTT connected with server
-    func mqtt(_ mqtt: CocoaMQTT, didConnect host: String, port: Int)
+    // deprecated: use mqtt(_ mqtt: CocoaMQTT, didConnectAck ack: CocoaMQTTConnAck) to tell if connect to the server successfully
+    // func mqtt(_ mqtt: CocoaMQTT, didConnect host: String, port: Int)
     func mqtt(_ mqtt: CocoaMQTT, didConnectAck ack: CocoaMQTTConnAck)
     func mqtt(_ mqtt: CocoaMQTT, didPublishMessage message: CocoaMQTTMessage, id: UInt16)
     func mqtt(_ mqtt: CocoaMQTT, didPublishAck id: UInt16)
@@ -214,7 +215,6 @@ open class CocoaMQTT: NSObject, CocoaMQTTClient, CocoaMQTTFrameBufferProtocol {
         let frame = CocoaMQTTFrameConnect(client: self)
         send(frame)
         reader!.start()
-        delegate?.mqtt(self, didConnect: host, port: Int(port))
     }
 
     fileprivate func nextMessageID() -> UInt16 {