Apply proxy settings if present

Fixes #74

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Added
+
+- Basic support for proxy settings (no PAC). [#74](https://github.com/keeshux/tunnelkit/issues/74)
+
 ### Changed
 
 - Make `hostname` optional and pick `resolvedAddresses` if nil.

TunnelKit/Sources/AppExtension/TunnelKitProvider.swift

@@ -555,10 +555,22 @@ extension TunnelKitProvider: SessionProxyDelegate {
             dnsSettings.searchDomains = [searchDomain]
         }
         
+        var proxySettings: NEProxySettings?
+        if let httpsProxy = cfg.sessionConfiguration.httpsProxy ?? reply.options.httpsProxy {
+            proxySettings = NEProxySettings()
+            proxySettings?.httpsServer = httpsProxy.neProxy()
+            proxySettings?.httpsEnabled = true
+        } else if let httpProxy = cfg.sessionConfiguration.httpProxy ?? reply.options.httpProxy {
+            proxySettings = NEProxySettings()
+            proxySettings?.httpServer = httpProxy.neProxy()
+            proxySettings?.httpEnabled = true
+        }
+
         let newSettings = NEPacketTunnelNetworkSettings(tunnelRemoteAddress: remoteAddress)
         newSettings.ipv4Settings = ipv4Settings
         newSettings.ipv6Settings = ipv6Settings
         newSettings.dnsSettings = dnsSettings
+        newSettings.proxySettings = proxySettings
         
         setTunnelNetworkSettings(newSettings, completionHandler: completionHandler)
     }
@@ -671,3 +683,9 @@ extension TunnelKitProvider {
         return error as? ProviderError ?? .linkError
     }
 }
+
+private extension Proxy {
+    func neProxy() -> NEProxyServer {
+        return NEProxyServer(address: address, port: Int(port))
+    }
+}