javascript - React-native Redux socket.io session 认证

Question

关于将 redux/react-native 连接到 socket.io 的任何建议 after 一个 http 请求？我需要先发出 http 请求以存储身份验证 session cookie，然后连接到 socket.io。我见过的所有示例(即 https://www.npmjs.com/package/redux-socket.io)都会立即连接到 socket.io。我的想法是在自定义 redux 中间件中听取 Action 并像这样连接:

import React from 'react-native'
import * as actions from './actions/';
import io from 'socket.io-client/socket.io';

export default socketMiddleware = (store) => {
    return next => action => {
    const result = next(action);
    // var socket = io();
    //
    if (action.type === 'HTTP_CONNECT_SUCCEEDED') {
      debugger;
      const socket = io('localhost:3000', {jsonp: false);
      socket.on('connect', function(){console.log('Connected!')});
    }
    //
    // socket.on('message', data => {
    //   store.dispatch(actions.addResponse(data));
    // });
    //
    // if (socket && action.type === actions.ADD_MESSAGE) {
    //   let messages = store.getState().messages;
    //   socket.emit('message', messages[messages.length -1]);
    // }

    return result;
  };
}

这适用于连接，但我必须在“HTTP_CONNECT_SUCCESS”条件中定义我的套接字，因此我的其他套接字操作和事件在该操作发生之前是未定义的。我如何连接到 WS 上的操作并公开我的套接字事件和其他操作？

Answer 1

我的希望临时技巧是使我的套接字变量成为全局变量，并将事件包装在条件中:

import React from 'react-native'
import * as actions from './actions/';
import io from 'socket.io-client/socket.io';

export default socketMiddleware = (store) => {
  return next => action => {

    const result = next(action);
    globalSocket = typeof globalSocket === 'undefined' ? false : globalSocket

    if (action.type === 'HTTP_CONNECT_SUCCEEDED') {
      globalSocket = io('http://localhost:3000', {jsonp: false});
      globalSocket.on('connect', () => {
        console.log('Connected!')
      });
    }

    if (globalSocket != false) {
      globalSocket.on('friends', data => {
        store.dispatch(actions.updateFriends(data));
      })

      if (action.type === 'CREATE_QUESTION') {
        globalSocket.emit('createQuestion', action.question);
      }
    }

    return result;
  };
}