irene
a31cdef775
Two root causes prevented iperf3 tests from running: 1. argv[0] bug: iperf_parse_arguments() expects argv[0] to be the program name. We passed Dart args directly, so argv[0] was '-c', which iperf3 misinterpreted as the program name → 'Argument parse error: must either be a client (-c) or server (-s)'. Fixed by prepending "iperf3" as argv[0] and shifting user args to argv[1+]. 2. Signal handling: iperf_catch_sigend() installs handlers that use longjmp() to a jmp_buf, but we never initialized the buffer with setjmp(). Any signal during iperf_run_client() caused SIGSEGV or hang. Added setjmp/longjmp wrapper matching main.c's pattern, SIGPIPE=SIG_IGN, and a 30s connect_timeout to avoid DNS hangs. Also extracted iperf_cleanup_and_signal() to deduplicate the normal-return and longjmp paths. Added diagnostic logging to IperfRunner.kt's library loading for faster future debugging.
121 lines
4.7 KiB
Kotlin
121 lines
4.7 KiB
Kotlin
package com.novoyuuparosk.iperf3gui
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import io.flutter.embedding.engine.plugins.FlutterPlugin
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import io.flutter.plugin.common.MethodChannel
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/**
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* Kotlin binding layer for native iperf3 via JNI.
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*
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* This class loads the native library (libiperf3jni.so) and exposes
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* iperf3 functionality to Flutter via MethodChannel callbacks.
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*
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* iperf3 runs natively inside the app process — no Process.start() needed,
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* no SELinux restrictions. Output is streamed live to the Flutter UI via
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* the IperfCallback interface.
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*/
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object IperfRunner : FlutterPlugin {
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private var channel: MethodChannel? = null
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init {
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// Load native library at class initialization
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try {
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android.util.Log.i("IperfRunner", "Loading native library...")
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System.loadLibrary("iperf3jni")
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android.util.Log.i("IperfRunner", "Native library loaded successfully")
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} catch (e: UnsatisfiedLinkError) {
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android.util.Log.e("IperfRunner", "Failed to load native library: ${e.message}")
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e.printStackTrace()
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}
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}
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override fun onAttachedToEngine(binding: FlutterPlugin.FlutterPluginBinding) {
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channel = MethodChannel(binding.binaryMessenger, "com.novoyuuparosk.iperf3gui/iperf")
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channel?.setMethodCallHandler { call, result ->
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when (call.method) {
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"runIperf" -> {
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val args = call.argument<List<String>>("args")?.toTypedArray()
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if (args != null) {
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runIperfLive(args, object : IperfCallback {
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override fun onOutput(line: String) {
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channel?.invokeMethod("onOutput", mapOf("output" to line))
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}
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override fun onError(error: String) {
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channel?.invokeMethod("onError", mapOf("error" to error))
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}
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override fun onComplete() {
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channel?.invokeMethod("onComplete", emptyMap<String, Any>())
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}
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})
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result.success(null)
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} else {
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result.error("INVALID_ARGS", "args must be a String array", null)
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}
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}
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"stopIperf" -> {
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forceStopIperfTest(object : IperfCallback {
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override fun onOutput(line: String) {
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channel?.invokeMethod("onOutput", mapOf("output" to line))
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}
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override fun onError(error: String) {
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channel?.invokeMethod("onError", mapOf("error" to error))
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}
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override fun onComplete() {
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channel?.invokeMethod("onComplete", emptyMap<String, Any>())
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}
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})
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result.success(null)
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}
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"isTestRunning" -> {
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result.success(isTestRunning())
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}
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else -> {
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result.notImplemented()
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}
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}
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}
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}
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override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
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channel = null
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}
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// ─────────────────────────────────────────────────────────────────
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// Native method bindings
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// ─────────────────────────────────────────────────────────────────
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/**
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* Start an iperf3 test with the given arguments.
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* This calls the native C function via JNI.
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*/
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external fun runIperfLive(arguments: Array<String>, callback: IperfCallback)
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/**
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* Gracefully stop a running iperf3 test.
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*/
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external fun forceStopIperfTest(callback: IperfCallback)
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/**
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* Check if an iperf3 test is currently running.
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* @return true if a test is in progress, false otherwise
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*/
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external fun isTestRunning(): Boolean
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/**
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* Callback interface for iperf3 test output.
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*
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* Used by the native layer to stream test results back to Flutter
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* in real-time.
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*/
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interface IperfCallback {
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/** Called with each line of iperf3 output (stdout/stderr) */
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fun onOutput(line: String)
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/** Called when an error occurs */
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fun onError(error: String)
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/** Called when the test completes (success or failure) */
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fun onComplete()
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}
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}
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