写一个用nodeis实现的物联网应用程序其通信协议使用COAP协议。该应用程序能够获取本地IP地址采集某个房间的温度、湿度、光照度等信息定时更新数据并通过coap协议发送给客户端程序。请写出服务端程序和客户端程序。

服务端程序：

const coap = require('coap');
const os = require('os');
const sensor = require('node-dht-sensor'); //用于采集温度、湿度信息
const tsl2561 = require('tsl2561'); //用于采集光照度信息

const server = coap.createServer(function(req, res) {
  console.log('Received ' + req.method + ' request from ' + req.rsinfo.address);
  
  if (req.url === '/ip') {
    const interfaces = os.networkInterfaces();
    const addresses = [];
    for (const iface in interfaces) {
      interfaces[iface].forEach(function(addr) {
        if (addr.family === 'IPv4' && !addr.internal) {
          addresses.push(addr.address);
        }
      });
    }
    res.end(addresses.join(', '));
  } else if (req.url === '/sensor') {
    sensor.read(11, 4, function(err, temperature, humidity) {
      if (!err) {
        tsl2561.init().then(() => {
          return tsl2561.readLuminosity();
        }).then((luminosity) => {
          const data = JSON.stringify({
            temperature: temperature.toFixed(1),
            humidity: humidity.toFixed(1),
            luminosity: luminosity.toFixed(1)
          });
          res.end(data);
          console.log('Temperature: ' + temperature.toFixed(1) + '°C');
          console.log('Humidity: ' + humidity.toFixed(1) + '%');
          console.log('Luminosity: ' + luminosity.toFixed(1) + ' lux');
        }).catch((err) => {
          console.error('Error reading luminosity: ' + err);
          res.end('Error reading luminosity');
        });
      } else {
        console.error('Error reading temperature/humidity: ' + err);
        res.end('Error reading temperature/humidity');
      }
    });
  } else {
    res.end('Invalid request');
  }
});

server.listen(function() {
  console.log('COAP server listening on port ' + server.address().port);
});

客户端程序：

const coap = require('coap');

const req = coap.request({
  host: 'localhost',
  pathname: '/ip'
});

req.on('response', function(res) {
  res.pipe(process.stdout);
});

req.end();

setInterval(function() {
  const req = coap.request({
    host: 'localhost',
    pathname: '/sensor'
  });
  
  req.on('response', function(res) {
    res.pipe(process.stdout);
  });
  
  req.end();
}, 10000); //每10秒更新一次数据