Как мы можем получить доступ к объекту сокета снаружи для соединения с несколькими сокетами. Я создал объект глобально и попытался сделать это. Но это всегда работает для последнего подключенного сокета.
'use strict';
const path = require('path')
const express = require('express');
const http = require('http');
const chalk = require('chalk');
const socketio = require('socket.io');
var connectionString = '';
const eventHubConsumerGroup = ""
const app = express()
const server = http.createServer(app ,() => {
console.log(chalk.green('Server created'))
})
const io = socketio(server)
const port = process.env.port || 3000
const publicDirectoryPath = path.join(__dirname , '../public')
var server_token = "1234567890";
app.use(express.static(publicDirectoryPath))
var localSocket;
io.on('connection',function(socket){
localSocket = socket;
console.log(socket.handshake.query.deviceID)
console.log('on user connected '+socket.id);
//report = new Report(socket);
socket.auth = false;
socket.on('authenticate',function(token){
console.log('token recieved is '+token);
if(server_token == token){
socket.auth = true;
console.log('connection is authenticated '+socket.id);
socket.emit("authenticate",true);
} else {
console.log("Connection not established")
socket.emit("authenticate",false);
}
})
socket.on('sendSocketEvent' , message => {
console.log(chalk.yellowBright(`Message recieved from ${socket.id} + ${message}`));
io.to(socket.id).emit('recieveSocketEvent', `Hello test`);
})
socket.on('disconnect',function(){
console.log('one user disconnected '+socket.id);
})
setTimeout(function(){
if(!socket.auth){
console.log('disconnecting the socket '+socket.id);
socket.emit("timeOut");
socket.disconnect();
}
},1000);
})
server.listen(port,() => {
console.log(chalk.redBright(`Server is up on port ${port}`))
})
var printMessage = function (message) {
console.log(JSON.stringify(message));
console.log(message.DeviceId);
if (localSocket != null){
if (message.DeviceId == localSocket.handshake.query.deviceID) {
localSocket.emit('recieveSocketEvent', message);
}
}
};
class EventHubReader {
constructor(connectionString, consumerGroup) {
this.connectionString = connectionString;
this.consumerGroup = consumerGroup;
this.eventHubClient = undefined;
this.receiveHandlers = undefined;
}
async startReadMessage(startReadMessageCallback) {
try {
console.log(this.connectionString)
const client = await EventHubClient.createFromIotHubConnectionString(this.connectionString);
console.log('Successfully created the EventHub Client from IoT Hub connection string.');
this.eventHubClient = client;
const partitionIds = await this.eventHubClient.getPartitionIds();
console.log('The partition ids are: ', partitionIds);
const onError = (err) => {
console.error(err.message || err);
};
const onMessage = (message) => {
const deviceId = message.annotations['iothub-connection-device-id'];
return startReadMessageCallback(message.body, message.enqueuedTimeUtc, deviceId);
};
this.receiveHandlers = partitionIds.map(id => this.eventHubClient.receive(id, onMessage, onError, {
eventPosition: EventPosition.fromEnqueuedTime(Date.now()),
consumerGroup: this.consumerGroup,
}));
} catch (ex) {
console.error(ex.message || ex);
}
}
// Close connection to Event Hub.
async stopReadMessage() {
const disposeHandlers = [];
this.receiveHandlers.forEach((receiveHandler) => {
disposeHandlers.push(receiveHandler.stop());
});
await Promise.all(disposeHandlers);
this.eventHubClient.close();
}
}
var { EventHubClient, EventPosition } = require('@azure/event-hubs');
const eventHubReader = new EventHubReader(connectionString, eventHubConsumerGroup);
(async () => {
console.log("Step1")
await eventHubReader.startReadMessage((message, date, deviceId) => {
console.log("Here getting called");
try {
const payload = {
IotData: message,
MessageDate: date || Date.now().toISOString(),
DeviceId: deviceId,
};
printMessage(payload);
} catch (err) {
console.error('Error broadcasting: [%s] from [%s].', err, message);
}
});
})().catch();
проблема в условии "printMessage". здесь я пытаюсь ограничить излучение на основе сокета deviceID, но он работает только для последнего подключенного сокета.
Можете ли вы помочь мне в этом.