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nativescript - CocoaAsyncSocket 和 NativeScript 问题

问题描述

我正在为基于 CocoaAsyncSocket 的 UDP 通信编写 Nativescript 插件，但是当我尝试在此 pod 的上下文中执行任何异步操作时，我的应用程序崩溃了。这似乎与 iOS x {N} 上的队列/线程有关，但我无法解决它，知道吗？

这是我在 Typescript 中创建 Plugin iOS 类的方式：

export class UdpProtocol extends NSObject implements GCDAsyncUdpSocketDelegate

这是我初始化我的方式GCDAsyncUdpSocket：

let dispatchQueue = dispatch_queue_create("sendUnicast_queue", null);
let sock = GCDAsyncUdpSocket.alloc()
           .initWithDelegateDelegateQueue(this, dispatchQueue);

这是我在 .ts 中调用的异步方法的一个示例：

sock.sendDataToHostPortWithTimeoutTag(sendData, address, port, -1, this.tag);

这是我期望正确触发的回调：

udpSocketDidSendDataWithTag(sock: GCDAsyncUdpSocket, tag: number): void {
        console.log('udpSocketDidSendDataWithTag callback');
}

但不幸的是，我得到的是下面的 JS 异常：

CONSOLE LOG file:///node_modules/@nativescript/core/inspector_modules.js:1:0: Loading inspector modules...
CONSOLE LOG file:///node_modules/@nativescript/core/inspector_modules.js:6:0: Finished loading inspector modules.
NativeScript debugger attached.
***** Fatal JavaScript exception - application has been terminated. *****
Native stack trace:
1   0x11033960e NativeScript::reportFatalErrorBeforeShutdown(JSC::ExecState*, JSC::Exception*, bool)
2   0x110388f76 -[TNSRuntimeInspector reportFatalError:]
3   0x10fc2d23b TNSInspectorUncaughtExceptionHandler
4   0x7fff23e3a36d __handleUncaughtException
5   0x7fff50ad7c05 _objc_terminate()
6   0x7fff4f926c87 std::__terminate(void (*)())
7   0x7fff4f926c29 std::terminate()
8   0x7fff519128df _dispatch_client_callout
9   0x7fff5191860c _dispatch_lane_serial_drain
10  0x7fff51919044 _dispatch_lane_invoke
11  0x7fff519230c4 _dispatch_workloop_worker_thread
12  0x7fff51b37a3d _pthread_wqthread
13  0x7fff51b36b77 start_wqthread
JavaScript stack trace:
UIApplicationMain(file:///node_modules/@nativescript/core/application/application.js:312:0)
at run(file:///node_modules/@nativescript/core/application/application.js:312:0)
at file:///node_modules/@nativescript/angular/platform-common.js:210:0
at file:///node_modules/@nativescript/angular/platform-common.js:111:0
at file:///node_modules/@nativescript/angular/platform-common.js:91:0
at file:///app/bundle.js:198:144
at ./main.ts(file:///app/bundle.js:203:34)
at __webpack_require__(file:///src/webpack/bootstrap:750:0)
at checkDeferredModules(file:///src/webpack/bootstrap:43:0)
at webpackJsonpCallback(file:///src/webpack/bootstrap:30:0)
at anonymous(file:///app/bundle.js:2:61)
at evaluate([native code])
at moduleEvaluation([native code])
at [native code]
at asyncFunctionResume([native code])
at [native code]
at promiseReactionJob([native code])
JavaScript error:
file:///node_modules/@nativescript/core/application/application.js:312:0: JS ERROR Error: -[__NSCFString bytes]: unrecognized selector sent to instance 0x6000036496c0
NativeScript caught signal 6.
Native Stack:
1   0x11038a251 sig_handler(int)
2   0x7fff51b2f5fd _sigtramp
3   0x7fff51a23f39 itoa64
4   0x7fff51a1fb7c abort
5   0x7fff4f927858 abort_message
6   0x7fff4f926cad std::__terminate(void (*)())
7   0x7fff4f926c29 std::terminate()
8   0x7fff519128df _dispatch_client_callout
9   0x7fff5191860c _dispatch_lane_serial_drain
10  0x7fff51919044 _dispatch_lane_invoke
11  0x7fff519230c4 _dispatch_workloop_worker_thread
12  0x7fff51b37a3d _pthread_wqthread
13  0x7fff51b36b77 start_wqthread
JS Stack unavailable. Current thread hasn't initialized a {N} runtime.

我已经在这里尝试过这样的解决方案，但没有成功。

此分支中提供了带有角度演示的插件

非常欢迎任何提示或帮助:)

标签： nativescriptnativescript-angularnativescript-plugincocoaasyncsocket

解决方案

实际上我发现该错误与我创建sendData变量的方式有关，我已将其更改为：

let sendData: any = NSString.alloc().initWithCString(msg);

到

const sendData: NSData = NSData.alloc().initWithBase64EncodedStringOptions(msg, 1);

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