node.js - 如何将我的客户端连接到 Cloud Foundry 上的 Node.js 服务器

Question

此代码在本地主机上完美运行，但在将其推送到 Cloud Foundry 上后不起作用......

这是服务器代码:

var net = require("net"),
    JsonSocket = require("json-socket");

var port = process.env.VCAP_APP_PORT || process.env.PORT || '3000';
var server = net.createServer();

//DEFINE A JSON MODEL FOR TAG DATAS
var tags = [];
var ids = [1, 2, 3, 4, 5];
var date = new Date();
for (var i = 0; i < ids.length; i++) {
    tags.push({id: ids[i],
               timestamp: date,
               position: [0, 0]
           });
    console.log(tags[i]);
}

function update(tags, i){
    var now = new Date();
    tags[i].timestamp = now;
    if(tags[i].position[0] < 180 && tags[i].position[0] > -180){
        tags[i].position[0] += Math.floor(Math.random()*3 - 1);
    } else {
        tags[i].position[0] = 0;
    }
    if(tags[i].position[1] < 180 && tags[i].position[1] > -180){
        tags[i].position[1] += Math.floor(Math.random()*3 - 1);
    } else {
        tags[i].position[1] = 0;
    }
}

server.listen(port);
console.log('Socket emitting on port: '+port);

server.on("connection", function(socket) {
    console.log('New connection');
    socket = new JsonSocket(socket);
    console.log('JsonSocket created');
    var i = 0;
    socket.on("message", function(message) {
        console.log('Mesaage received');
        if(message.command == "newData"){
            //remplir l'array
            //message.data.position[0] --> x
        }else{
            streamInterval = setInterval(function() {
                if(i<tags.length){
                   socket.sendMessage(JSON.stringify(tags[i]));
                   update(tags, i);
                   i++;
                } else {
                    i = 0;
                    socket.sendMessage(JSON.stringify(tags[i]));
                    update(tags, i);
                    i++;
                }
            }, 1000); //SET INTERVAL DURATION IN MS
        }
    });
});

所以基本上我只是在等待启动连接的消息。之后我将所有数据发送给客户。

这是我客户的代码:

var net = require('net'),
    JsonSocket = require('json-socket');

var port = 80; 
var host = 'locationserver.apps.eu01.cf.canopy-cloud.com';
var socket = new JsonSocket(new net.Socket());

socket.connect(port, host);

socket.on('connect', function(err) { 
    console.log('client connected');
    socket.sendMessage({command: 'start'});
    console.log('message sended');
    socket.on('message', function(msg) {
        console.log(msg);
    });
});

在本地主机上，这是结果:

client connected
message sended
{"id":1,"timestamp":"2016-04-12T12:36:33.491Z","position":[0,0]}
{"id":2,"timestamp":"2016-04-12T12:36:33.491Z","position":[0,0]}
{"id":3,"timestamp":"2016-04-12T12:36:33.491Z","position":[0,0]}
{"id":4,"timestamp":"2016-04-12T12:36:33.491Z","position":[0,0]}
{"id":5,"timestamp":"2016-04-12T12:36:33.491Z","position":[0,0]}

但是如果我将服务器放在 Cloud Foundry 上，我会得到以下结果:

client connected
message sended

然后就停止了...

我没有错误..没有任何错误。但在 Cloud Foundry 上，我的调试消息说客户端已连接并没有出现! (console.log('新连接')第38行)...

我有一些联系，但我想这只是云类型转换厂的保持事件系统..

有人有这方面的信息吗？Cloud Foundry 刚刚说要使用:var port = process.env.VCAP_APP_PORT || process.env.PORT || '3000';我想我必须在端口 80 上绑定(bind)我的客户端，但我不确定......

谢谢

编辑:process.env 的内容

Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT PWD: '/home/vcap/app',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT NODE_HOME: '/home/vcap/app/.heroku/node',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT MEMORY_LIMIT: '1024m',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT CF_PROCESS_TYPE: 'web',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT VCAP_APP_HOST: '0.0.0.0',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT PORT: '61231',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT CF_INSTANCE_PORTS: '[{"external":61231,"internal":61231}]',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT HOME: '/home/vcap/app',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT CF_INSTANCE_INDEX: '0',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT CF_INSTANCE_IP: '10.0.2.54',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT VCAP_SERVICES: '{}',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT NODE_ENV: 'production',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT CF_INSTANCE_PORT: '61231',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT LANG: 'en_US.UTF-8',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT MEMORY_AVAILABLE: '1024',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT WEB_CONCURRENCY: '2',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT PATH: '/home/vcap/app/.heroku/node/bin:/bin:/usr/bin:/home/vcap/app/bin:/home/vcap/app/node_modules/.bin',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT VCAP_APPLICATION: '{"limits":{"mem":1024,"disk":1024,"fds":16384},"application_id":"28c1b6b7-230c-4d54-9954-3b837e65b128","application_version":"b835475f-7205-4f27-abc6-ea125c600191","application_name":"locationServer","application_uris":["locationserver.apps.eu01.cf.canopy-cloud.com"],"version":"b835475f-7205-4f27-abc6-ea125c600191","name":"locationServer","space_name":"Agile Unit","space_id":"19879db7-9f82-4ccf-93d4-31ce7a1f9e72","uris":["locationserver.apps.eu01.cf.canopy-cloud.com"],"users":null,"instance_id":"0dbb0c8e138d4d6b869b1ac6fcf4b66b","instance_index":0,"host":"0.0.0.0","port":61231,"started_at":"2016-04-12 13:27:37 +0000","started_at_timestamp":1460467657,"start":"2016-04-12 13:27:37 +0000","state_timestamp":1460467657}',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT USER: 'vcap',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT VCAP_APP_PORT: '61231',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT _: '/home/vcap/app/.heroku/node/bin/node' }
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT WEB_MEMORY: '512',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT TMPDIR: '/home/vcap/tmp',
Tue Apr 12 2016 13:27:39 GMT+0000 (UTC) App/0   OUT { CF_INSTANCE_ADDR: '10.0.2.54:61231',

Answer 1

你应该登录 var port = process.env.VCAP_APP_PORT || process.env.PORT || '3000';检查部署时使用的端口。

在您的客户端，发生的情况是端口可能错误(端口 80)。

它不会在客户端显示任何错误，因为您没有打印它:

socket.on('connect', function(err) { 
    if (err) {
      console.log(err);
    }
    console.log('client connected');
    socket.sendMessage({command: 'start'});
    console.log('message sended');
    socket.on('message', function(msg) {
        console.log(msg);
    });
});

可能发生的情况是它无法连接并发送消息，因此超时。

编辑:

查看 Cloud Foundry 文档后，发现流量被重定向到端口 80 (http) 或 443 (https)，​​并在环境端口上重定向。