SwiftNIO: Add TLS support

iosApp/iosApp/SpProtocolIApple.swift

@@ -3,17 +3,18 @@ import NIO
 import NIOFoundationCompat
 import NIOTransportServices
 import NIOExtras
+import NIOSSL
 import shared
 
-@objc class SpProtocolApple: SyncplayProtocol, ChannelInboundHandler {
+class SpProtocolApple: SyncplayProtocol, ChannelInboundHandler {
     typealias InboundIn = ByteBuffer
 
     private var channel: Channel?
     private var eventLoopGroup: EventLoopGroup?
 
     //override let engine = SyncplayProtocol.NetworkEngine.swiftnio
 
-    @objc override func connectSocket() {
+    override func connectSocket() {
         let group = NIOTSEventLoopGroup()
         eventLoopGroup = group
 
@@ -46,15 +47,15 @@ import shared
 
     }
 
-    @objc override func isSocketValid() -> Bool {
+    override func isSocketValid() -> Bool {
         return channel?.isActive ?? false
     }
 
-    @objc override func supportsTLS() -> Bool {
-        return false
+    override func supportsTLS() -> Bool {
+        return true
     }
 
-    @objc override func endConnection(terminating: Bool) {
+    override func endConnection(terminating: Bool) {
         try? channel?.close().wait()
         try? eventLoopGroup?.syncShutdownGracefully()
 
@@ -63,7 +64,7 @@ import shared
         }
     }
 
-    @objc override func writeActualString(s: String) {
+    override func writeActualString(s: String) {
         guard let channel = channel else {
             syncplayCallback?.onDisconnected()
             return
@@ -82,8 +83,19 @@ import shared
         }
     }
 
-    @objc override func upgradeTls() {
-        // TLS setup for SwiftNIO
+    override func upgradeTls() {
+        if (channel != nil) {
+            do {
+                let configuration = TLSConfiguration.makeClientConfiguration()
+                let sslContext = try NIOSSLContext(configuration: configuration)
+                let tlsHandler = try NIOSSLClientHandler(context: sslContext, serverHostname: "syncplay.pl")
+                try channel?.pipeline.addHandler(tlsHandler, position: .first).wait()
+            } catch {
+                print("Error initializing TLS: \(error)")
+                // Handle error appropriately (e.g., call onConnectionFailed())
+                self.syncplayCallback?.onConnectionFailed()
+            }
+        }
     }
 
 

shared/src/commonMain/kotlin/com/yuroyami/syncplay/lyricist/localizations/EnStrings.kt

@@ -259,8 +259,8 @@ val EnStrings = object : Strings {
 
     override val settingNetworkEngineTitle = "Network Engine"
     override val settingNetworkEngineSummary = "The network engine serves as the backbone of connectivity. Experiment with each option and choose the one that offers the most stability for your needs."
-    override val settingNetworkEngineNetty = "Netty (Recommended, TLS)"
-    override val settingNetworkEngineSwiftNIO = "SwiftNIO (Recommended)"
+    override val settingNetworkEngineNetty = "Netty (Recommended + TLS)"
+    override val settingNetworkEngineSwiftNIO = "SwiftNIO (Recommended + TLS)"
     override val settingNetworkEngineKtor = "Ktor (Experimental)"
 
 }

shared/src/iosMain/kotlin/com/yuroyami/syncplay/protocol/SpProtocolApple.kt

@@ -4,10 +4,10 @@ class SpProtocolApple {
 
     /** The implementation of the native iOS network client is done in pure Swift
      * using SwiftNIO due to its extreme resemblance with Java's Netty.
-     * It's also as stable and completely reliable, unlike Ktor, which
-     * keeps causing crashes (I suspect it still doesn't know how to
-     * do memory management yet, or perhaps I haven't implemented it
-     * correctly).
+     * It's also as stable and completely reliable, and supports TLS.
+     *
+     * Unlike Ktor, which is contrary to all above:
+     * keeps causing crashes, doesn't support TLS, terrible concurrency...etc
      *
      * You can find said SwiftNIO implementation in iosApp native code */
 }