remove code for iOS versions lower than 12

Author: Hongyan Jiang

Changelog.md

@@ -1,5 +1,7 @@
 # Changelog
 
+## 1.8.5
+- remove code for iOS versions lower than 12
 
 ## 1.8.4
 - better memory management

InstanaAgent.podspec

@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
   #
 
   s.name         = "InstanaAgent"
-  s.version      = "1.8.4"
+  s.version      = "1.8.5"
   s.summary      = "Instana iOS agent."
 
   # This description is used to generate tags and improve search results.

Sources/InstanaAgent/Configuration/VersionConfig.swift

@@ -1,3 +1,3 @@
 struct VersionConfig {
-    static let agentVersion = "1.8.4"
+    static let agentVersion = "1.8.5"
 }

Sources/InstanaAgent/Utils/Networking/NetworkUtility.swift

@@ -16,7 +16,6 @@ class NetworkUtility {
     }
 
     var connectionUpdateHandler: (ConnectionType) -> Void = { _ in }
-    private var reachability: Reachability?
     static let shared = NetworkUtility()
 
     init(observeNetworkChanges: Bool = true) {
@@ -36,21 +35,6 @@ class NetworkUtility {
             if observeNetworkChanges {
                 nwPathMonitor.start(queue: .main)
             }
-        } else {
-            // Fallback on earlier versions
-            // Remove when dropping iOS 11 and use NWPath (see git history)
-            reachability = (try? Reachability())
-            reachability?.whenReachable = { [weak self] reachability in
-                guard let self = self else { return }
-                self.update(reachability.connection == .wifi ? .wifi : .cellular)
-            }
-            reachability?.whenUnreachable = { [weak self] _ in
-                guard let self = self else { return }
-                self.update(.none)
-            }
-            if observeNetworkChanges {
-                try? reachability?.startNotifier()
-            }
         }
     }