Delay tunnel disposal (#311)

Postpone reconnection due to on-demand trigger.

CHANGELOG.md

@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Upgrade OpenSSL to 1.1.1q.
 - Use natively async methods from NetworkExtension. [#284](https://github.com/passepartoutvpn/tunnelkit/pull/284)
 - OpenVPN: Unmask PUSH_REPLY and network settings in logs.
+- OpenVPN: Delay tunnel disposal. [#311](https://github.com/passepartoutvpn/tunnelkit/pull/311)
 
 ### Fixed
 

Sources/TunnelKitOpenVPNAppExtension/OpenVPNTunnelProvider.swift

@@ -331,6 +331,13 @@ open class OpenVPNTunnelProvider: NEPacketTunnelProvider {
     }
     
     private func disposeTunnel(error: Error?) {
+        log.info("Dispose tunnel in \(reconnectionDelay) milliseconds...")
+        tunnelQueue.asyncAfter(deadline: .now() + .milliseconds(reconnectionDelay)) { [weak self] in
+            self?.reallyDisposeTunnel(error: error)
+        }
+    }
+
+    private func reallyDisposeTunnel(error: Error?) {
         flushLog()
 
         // failed to start