feat: switch iperf3 to JNI with 3.19 source

- Switch from bundled iperf3 binary (Process.start) to JNI compilation - iperf3 3.21 source API was incompatible (start_time, iperf_strerror, etc.) - iperf3 3.19 source is proven to work (used by CellularLab) - CMakeLists.txt updated: config.h generated into cpp/iperf/ for correct include paths - iperf_jni.c fixed for 3.19 API (no start_time on iperf_test) - getTestProgress() returns g_test->duration as fallback (no real-time elapsed tracking yet) - NDK CMake pinned to 3.22.1 - UI layer updated: removed Iperf3BinaryPathProvider references - Tests updated: TestRunViewModelTest matches new service interface - pubspec.yaml: removed iperf3 assets bundle, added http dependency - AndroidManifest: INTERNET permission (needed for hostname resolution)
2026-08-25 13:46:33 +09:00
parent 27e8e50469
commit d551f41b41
63 changed files with 24243 additions and 167 deletions
@@ -0,0 +1,113 @@
+package com.novoyuuparosk.iperf3gui
+
+import io.flutter.embedding.engine.plugins.FlutterPlugin
+import io.flutter.plugin.common.MethodChannel
+
+/**
+ * Kotlin binding layer for native iperf3 via JNI.
+ *
+ * This class loads the native library (libiperf3jni.so) and exposes
+ * iperf3 functionality to Flutter via MethodChannel callbacks.
+ *
+ * iperf3 runs natively inside the app process — no Process.start() needed,
+ * no SELinux restrictions. Output is streamed live to the Flutter UI via
+ * the IperfCallback interface.
+ */
+object IperfRunner : FlutterPlugin {
+
+    private var channel: MethodChannel? = null
+
+    init {
+        // Load native library at class initialization
+        System.loadLibrary("iperf3jni")
+    }
+
+    override fun onAttachedToEngine(binding: FlutterPlugin.FlutterPluginBinding) {
+        channel = MethodChannel(binding.binaryMessenger, "com.novoyuuparosk.iperf3gui/iperf")
+        channel?.setMethodCallHandler { call, result ->
+            when (call.method) {
+                "runIperf" -> {
+                    val args = call.argument<Array<String>>("args")
+                    if (args != null) {
+                        runIperfLive(args, object : IperfCallback {
+                            override fun onOutput(line: String) {
+                                channel?.invokeMethod("onOutput", mapOf("output" to line))
+                            }
+                            override fun onError(error: String) {
+                                channel?.invokeMethod("onError", mapOf("error" to error))
+                            }
+                            override fun onComplete() {
+                                channel?.invokeMethod("onComplete", emptyMap<String, Any>())
+                            }
+                        })
+                        result.success(null)
+                    } else {
+                        result.error("INVALID_ARGS", "args must be a String array", null)
+                    }
+                }
+                "stopIperf" -> {
+                    forceStopIperfTest(object : IperfCallback {
+                        override fun onOutput(line: String) {
+                            channel?.invokeMethod("onOutput", mapOf("output" to line))
+                        }
+                        override fun onError(error: String) {
+                            channel?.invokeMethod("onError", mapOf("error" to error))
+                        }
+                        override fun onComplete() {
+                            channel?.invokeMethod("onComplete", emptyMap<String, Any>())
+                        }
+                    })
+                    result.success(null)
+                }
+                "isTestRunning" -> {
+                    result.success(isTestRunning())
+                }
+                else -> {
+                    result.notImplemented()
+                }
+            }
+        }
+    }
+
+    override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
+        channel = null
+    }
+
+    // ─────────────────────────────────────────────────────────────────
+    // Native method bindings
+    // ─────────────────────────────────────────────────────────────────
+
+    /**
+     * Start an iperf3 test with the given arguments.
+     * This calls the native C function via JNI.
+     */
+    external fun runIperfLive(arguments: Array<String>, callback: IperfCallback)
+
+    /**
+     * Gracefully stop a running iperf3 test.
+     */
+    external fun forceStopIperfTest(callback: IperfCallback)
+
+    /**
+     * Check if an iperf3 test is currently running.
+     * @return true if a test is in progress, false otherwise
+     */
+    external fun isTestRunning(): Boolean
+
+    /**
+     * Callback interface for iperf3 test output.
+     *
+     * Used by the native layer to stream test results back to Flutter
+     * in real-time.
+     */
+    interface IperfCallback {
+        /** Called with each line of iperf3 output (stdout/stderr) */
+        fun onOutput(line: String)
+
+        /** Called when an error occurs */
+        fun onError(error: String)
+
+        /** Called when the test completes (success or failure) */
+        fun onComplete()
+    }
+}