使用react-native-tcp在两部电话之间建立套接字连接

Question

我正在尝试使用react-native-tcp在两部电话之间建立套接字连接。其中一个是服务器，服务器首先创建一个热点，然后创建服务器（通过按 start server 按钮），然后客户端将连接到该热点并尝试连接到服务器（通过按连接到服务器）。但不幸的是，它不起作用。客户端电话中出现此错误：
Error Message

app.js：

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 *
 * @format
 * @flow
 */

import React, { Component } from "react";
import {
  TouchableOpacity,
  StyleSheet,
  Text,
  View,
  PermissionsAndroid,
  ToastAndroid,
  Alert
} from "react-native";
import Hotspot from "react-native-wifi-hotspot";
import Wifi from "react-native-iot-wifi";

let server;
let client;

export default class App extends Component {
  componentDidMount() {}

  connectToWifi = () => {
    Wifi.connectSecure("esmfamil2412Mahdi", "11111111", false, error => {});
  };

  startClient = () => {
    this.connectToWifi();
    setTimeout(() => {
      ToastAndroid.show('dddd', ToastAndroid.SHORT)
      client = require("./client");
    }, 10000)
  };

  enableHotspot = () => {
    const hotspot = { SSID: "esmfamil2412Mahdi", password: "11111111" };
    Hotspot.create(
      hotspot,
      () => {
        ToastAndroid.show("Hotspot enstablished", ToastAndroid.SHORT);
      },
      err => {
        ToastAndroid.show(err.toString(), ToastAndroid.SHORT);
      }
    );
    Hotspot.enable(
      () => {
        ToastAndroid.show("Hotspot Enabled", ToastAndroid.SHORT);
      },
      err => {
        ToastAndroid.show(err.toString(), ToastAndroid.SHORT);
      }
    );
  };

  startServer = () => {
    this.enableHotspot();
    setTimeout(() => {
      server = require("./server");

    }, 10000)
  };

  sendData = () => {
    console.log(server);
    server.sendData();
  }

  render() { 
    return (
      <View style={styles.container}>
        <TouchableOpacity onPress={this.startServer} style={styles.button}>
          <Text> start a server </Text>
        </TouchableOpacity>
        <TouchableOpacity onPress={this.startClient} style={styles.button}>
          <Text> connecting to the server </Text>
        </TouchableOpacity>
        <TouchableOpacity onPress={this.enableWifi} style={styles.button}>
          <Text> enabling wifi </Text>
        </TouchableOpacity>
        <TouchableOpacity onPress={this.sendData} style={styles.button}>
          <Text> send data </Text>
        </TouchableOpacity>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: "center",
    alignItems: "center",
    backgroundColor: "#F5FCFF"
  },
  button: {
    margin: 20,
    borderWidth: 2
  },
  welcome: {
    fontSize: 20,
    textAlign: "center",
    margin: 10
  },
  instructions: {
    textAlign: "center",
    color: "#333333",
    marginBottom: 5
  }
});

client.js

import { ToastAndroid } from "react-native";

var net = require("react-native-tcp");

var client = net.createConnection(6500, "0.0.0.0", function() {
  ToastAndroid.show("connected to server!", ToastAndroid.SHORT);
});

client.on("data", function(data) {
  ToastAndroid.show(data.toString(), ToastAndroid.LONG);
});

client.on("end", function() {
  ToastAndroid.show("disconnected from server", ToastAndroid.SHORT);
});

module.exports = client;

server.js

import { ToastAndroid } from "react-native";
var net = require("react-native-tcp");

let client;

ToastAndroid.show("this is working", ToastAndroid.SHORT);

let server = net.createServer(function(socket) {
  ToastAndroid.show("server is created", ToastAndroid.SHORT);
  if (socket.write) console.log(socket.write);
  client = socket;
});

server.listen(6500, () => {
  ToastAndroid.show(
    "it's listening" + JSON.stringify(server.address()),
    ToastAndroid.SHORT
  );
});

let sendData = () => {
  if (client)
    client.write(
      JSON.stringify({
        name: "mahdi",
        city: "manchester",
        country: "mangolia",
        family: "mousavi"
      })
    );
  else ToastAndroid.show("not possible", ToastAndroid.SHORT);
};

module.exports = { sendData };

我尝试将"0.0.0.0"和"localhost"作为createConnection的第二个参数，但是它们都不起作用。