反应本机udp-dgram.createSocket('udp4')错误

Question

我正在尝试使用react-native-udp库。
我使用expo和android studio模拟器。
我使用本手册安装此库:https://www.npmjs.com/package/react-native-udp
但是，在尝试创建套接字时发生错误。模拟器屏幕在这里。
来自app.js的代码:

function App() {

var PORT = 50000;
var HOST = '0.0.0.0';
const dgram = require('dgram');
const server = dgram.createSocket('udp4');

server.on('listening', function () {
var address = server.address();
console.log('UDP Server listening on ' + address.address + ":" +
address.port);
});

server.on('message', function (message, remote) {
console.log('Message',  message);
});

server.bind(PORT, HOST);

}
export default App;

有什么想法吗？它不是一个未定义的错误...
完整错误输出：

null不是对象（求值'sockets.createsocket')-node_modules\react-native-udp\UdpSocket.js:58:7 in udpsocket-node_modules\react-native-udp\udpsockets.js:10:35 in exports.createsocket*App.js:11:0 in app-node_modules\react-nativer\libraries\renderer\implementations:10696:27 in模块\react-native\libraries\renderer\implementations:307:15 in invokeGuardedCallbackImpl-Node_Modules\react-nativeRenderer-dev.js:531:36 in invokeGuardedCallback-Node_Modules\react-native\Libraries\renderer\implements:531:36 in invokeGuardedCallback-Node_Modules\react-native\Libraries\render\implements:20488:8 inentations\reactnativerEnderer-dev.js:19347:39 in workloopsync-node_modules\react-nativer\librares\renderer\implements\reactnativerEnderer-dev.js:18997:22 in renderRoot*[本机代码]:null in renderroot-node_modules\react-nativerEnderer-dev.js:18709:28 in runRootCallback*[本机代码]:null in\cjs\scheduler.development.js:643:23 in unstable_runWithPriority-node_modules\react-nativel\libraries\renderer\implementations\reactnativerrenderer-dev.js:5638:22 in flushsynccallbackqueueimpl-node_modules\react-nativerrender-dev.js:5627:28 in flushsynccallbackqueueimpl-node_modules\reactEnderer\implementations\reactnativerEnderer-dev.js:21822:15 in schedulerootate-node_modules\react-nativer\libraries\renderer\implements\reactnativerEnderer-dev.js:23042:20 in Libraries\batchedbridge\messagequee.js:436:47 in__callfunction-node_modules\react-nativels\libraries\batchedbridge\messagequee.js:111:26 in__guard$argument_0-node_modules\react-nativels\libraries\batchedbridge\messagequee.js:384:10 in__guard

警告：%s：错误边界应实现getDerivedStateFromError（）。在该方法中，返回一个状态更新以显示错误消息或回退UI。rooterrorbounder-node_modules\react-native\libraries\yellowbox\yellowbox.js:63:8 In console.error-node_modules\expo\build\environment\mutewarnings.fx.js:27:24 In error-node_modules\react-native\libraries\renderer\react-nativer\implementations:645:36 In warningWithoutStack.js:7595:16 In callCallback-node_modules\react-native\libraries\renderer\implementations\react-native\libraries\reactnativeRenderer-dev.js:7639:19 In commitupdateEffects-node_modules\react-native\libraries\reactnativeRenderer-dev.js:7630:22 Innderer\implementations\reactnativerEnderer-dev.js:20002:23 in commitlayouteffects-node_modules\react-nativer\libraries\renderer\implements\reactnativerEnderer-dev.js:307:15 in invokeGuardedCallbackimpl-node_modules\react-nativer\libraries\render\implements:531:36 in er.development.js:643:23 in unstable_runWithPriority-node_modules\react-native\libraries\renderer\implementations\reactnativeRenderer-dev.js:19590:4 in commitRoot*[本机代码]:null in commitRoot-node_modules\react-nativeRenderer-dev.js:18709:28 in runRootCallback*[本机代码]:null in runRootCallbackUment_1-node_modules\scheduler\cjs\scheduler.development.js:643:23 in unstable_runWithPriority-node_modules\react-native\libraries\renderer\implements\reactnativerrenderer-dev.js:5638:22 in flushsynccallbackqueueimpl-node_modules\react-nativerrenderer-dev.js:5627:28 in Er\implementations\reactnativerEnderer-dev.js:21822:15 in ScheduleRootedate-node_modules\react-nativer\libraries\renderer\implements\reactnativerEnderer-dev.js:23042:20 incation-node_modules\react-native\libraries\batchedbridge\messagequee.js:436:47 in__callfunction-node_modules\react-nativency\libraries\batchedbridge\messagequee.js:111:26 in__guard$argument_0-node_modules\react-native\libraries\batchedbridge\messagequee.js:384:10 in__guard

Answer 1

1. 在RN项目中手动链接库。

yarn link react-native-udp

pod install