文档建议反馈控制台
首页
学习
活动
专区
圈层
工具
MCP广场
文章/答案/技术大牛
发布
首页
学习
活动
专区
圈层
工具
MCP广场
返回腾讯云官网
社区首页 >问答首页 >Android Socket.io每隔几秒钟断开和重新连接一次

问Android Socket.io每隔几秒钟断开和重新连接一次
EN

Stack Overflow用户
提问于 2021-04-19 01:58:20
回答 1查看 541关注 0票数 4

我现在有一个设置，我正在运行一个烧瓶服务器，处理与安卓手机和raspberry pi node.js socket.io客户端之间的websocket通信。android socket.io可以连接到烧瓶服务器，node.js客户端可以连接，我可以在所有3台之间发送消息，但是我的android socket.io客户端每5-10秒断开一次连接并重新连接。它继续这样做，即使当我离开导致它连接的活动时，它也会不断地连接和断开服务器。以下是android中的Java代码：

代码语言：javascript
运行
复制
import io.socket.client.IO;
import io.socket.client.Socket;
import io.socket.emitter.Emitter;


public class ControlPage extends AppCompatActivity {
    Button greenButton;
    Button redButton;
    private Socket mSocket; {
        try {
            mSocket = IO.socket("http://192.168.1.2:5000");
        } catch (URISyntaxException e) {}
    }
    //private EditText mInputMessageView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_control_page);
        mSocket.connect();
        mSocket.on(Socket.EVENT_CONNECT, onConnect);
        greenButton = (Button) findViewById(R.id.sendButtonGreen);
        greenButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                attemptSendGreen();
            }
        });
        redButton = (Button) findViewById(R.id.sendButtonRed);
        redButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                attemptSendRed();
            }
        });
    }

服务器端在我的烧瓶代码中有：

代码语言：javascript
运行
复制
import flask
from flask_socketio import SocketIO, emit
from flask import request
import json

app = flask.Flask(__name__)
socketio = SocketIO(app)
clients = {}
sessions = {}

@app.route('/')
def hello():
    return "<h1> Hello World! </h1>"
    
@socketio.on('connect')
def testConnect():
    print('connected')
    emit('connected')

    
@socketio.on('disconnect')
def testDisconnect():
    userSID = request.sid
    print('disconnected ' + str(userSID))
    UserID = sessions[str(userSID)][0]
    UserType = sessions[str(userSID)][1]
    clients[UserID][UserType]=''
    sessions.pop(str(userSID))
        
@socketio.on('config')
def handle_config(data):
    print('received message: ' + str(data)+ str(type(data)))
    userSID = request.sid
    if type(data) == str:
        jsonData = eval(data)
    else:
        jsonData = data
    print(userSID)
    if jsonData['USER_KEY'] in clients:
        clients[jsonData['USER_KEY']][jsonData['USER_TYPE']]=userSID
    else:
        clients[jsonData['USER_KEY']] = {'USER':'',
                                     'HARDWARE':''}
        clients[jsonData['USER_KEY']][jsonData['USER_TYPE']]=userSID
    sessions[str(userSID)] = [jsonData['USER_KEY'], jsonData['USER_TYPE']]

@socketio.on('transfer')
def transfer(data):
    jsonData = eval(data)
    print(jsonData)
    UserID = jsonData['USER_KEY']
    UserType = jsonData['USER_TYPE']
    color = jsonData['MESSAGE']
    #message = data['MESSAGE']
    message = {'COLOR': color,
               'STATE': 1
        }
    jsonMessage = json.dumps(message)
    
    if UserType == 'USER':
        transferID = clients[UserID]['HARDWARE']
    else: 
        transferID = clients[UserID]['USER']
    emit('serverTransfer', jsonMessage, to=transferID)

socketio.run(app,host='192.168.1.2',port='5000') #remove this line when using gunicorn deployment

所有服务器端与我的node.js客户端都能正常工作，所以我不认为问题来自服务器。

这是我从服务器获得的信息，显示android客户端每隔几秒钟断开和重新连接一次：

代码语言：javascript
运行
复制
WebSocket transport not available. Install eventlet or gevent and gevent-websocket for improved performance.
 * Serving Flask app "websocketTest" (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: off
 * Running on http://192.168.1.2:5000/ (Press CTRL+C to quit)
192.168.1.5 - - [18/Apr/2021 18:15:23] "GET /socket.io/?EIO=4&transport=polling HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:23] "POST /socket.io/?EIO=4&transport=polling&sid=mO35rQ0Mi_5ZxYFXAAAA HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:23] "GET /socket.io/?EIO=4&transport=polling&sid=mO35rQ0Mi_5ZxYFXAAAA HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:23] "POST /socket.io/?EIO=4&transport=polling&sid=mO35rQ0Mi_5ZxYFXAAAA HTTP/1.1" 200 -
connected
received message: { "USER_KEY": "TEST_USER", "MESSAGE": "asdfasdfasdf", "USER_TYPE":"USER"}<class 'str'>
6pKGg55-qcP9rejgAAAB
192.168.1.5 - - [18/Apr/2021 18:15:33] "POST /socket.io/?EIO=4&transport=polling&sid=mO35rQ0Mi_5ZxYFXAAAA HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:33] "GET /socket.io/?EIO=4&transport=polling&sid=mO35rQ0Mi_5ZxYFXAAAA HTTP/1.1" 200 -
disconnected6pKGg55-qcP9rejgAAAB
192.168.1.6 - - [18/Apr/2021 18:15:33] "GET /socket.io/?EIO=4&transport=polling&t=NZdidCS&b64=1 HTTP/1.1" 200 -
192.168.1.6 - - [18/Apr/2021 18:15:34] "POST /socket.io/?EIO=4&transport=polling&t=NZdidEm&b64=1&sid=6pJ6UIkNrvOanjMwAAAC HTTP/1.1" 200 -
192.168.1.6 - - [18/Apr/2021 18:15:34] "GET /socket.io/?EIO=4&transport=polling&t=NZdidEx&b64=1&sid=6pJ6UIkNrvOanjMwAAAC HTTP/1.1" 200 -
192.168.1.6 - - [18/Apr/2021 18:15:34] "POST /socket.io/?EIO=4&transport=polling&t=NZdidFW&b64=1&sid=6pJ6UIkNrvOanjMwAAAC HTTP/1.1" 200 -
192.168.1.6 - - [18/Apr/2021 18:15:34] "POST /socket.io/?EIO=4&transport=polling&t=NZdidFx&b64=1&sid=6pJ6UIkNrvOanjMwAAAC HTTP/1.1" 200 -
connected
received message: {'USER_KEY': 'TEST_USER', 'USER_TYPE': 'HARDWARE'}<class 'dict'>
1nrEBb6Xny3dpELEAAAD
192.168.1.5 - - [18/Apr/2021 18:15:35] "GET /socket.io/?EIO=4&transport=polling HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:35] "POST /socket.io/?EIO=4&transport=polling&sid=Vo6Qo1Suk5U6dnG0AAAE HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:35] "GET /socket.io/?EIO=4&transport=polling&sid=Vo6Qo1Suk5U6dnG0AAAE HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:35] "POST /socket.io/?EIO=4&transport=polling&sid=Vo6Qo1Suk5U6dnG0AAAE HTTP/1.1" 200 -
connected
received message: { "USER_KEY": "TEST_USER", "MESSAGE": "asdfasdfasdf", "USER_TYPE":"USER"}<class 'str'>
85Gy1EZr-XWm32-6AAAF
192.168.1.5 - - [18/Apr/2021 18:15:39] "POST /socket.io/?EIO=4&transport=polling&sid=Vo6Qo1Suk5U6dnG0AAAE HTTP/1.1" 200 -
192.168.1.6 - - [18/Apr/2021 18:15:39] "GET /socket.io/?EIO=4&transport=polling&t=NZdidFj&b64=1&sid=6pJ6UIkNrvOanjMwAAAC HTTP/1.1" 200 -
{'USER_KEY': 'TEST_USER', 'MESSAGE': 'GREEN', 'USER_TYPE': 'USER'}
192.168.1.6 - - [18/Apr/2021 18:15:40] "GET /socket.io/?EIO=4&transport=polling&t=NZdieaT&b64=1&sid=6pJ6UIkNrvOanjMwAAAC HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:40] "POST /socket.io/?EIO=4&transport=polling&sid=Vo6Qo1Suk5U6dnG0AAAE HTTP/1.1" 200 -
{'USER_KEY': 'TEST_USER', 'MESSAGE': 'GREEN', 'USER_TYPE': 'USER'}
192.168.1.5 - - [18/Apr/2021 18:15:41] "POST /socket.io/?EIO=4&transport=polling&sid=Vo6Qo1Suk5U6dnG0AAAE HTTP/1.1" 200 -
192.168.1.6 - - [18/Apr/2021 18:15:41] "GET /socket.io/?EIO=4&transport=polling&t=NZdiejT&b64=1&sid=6pJ6UIkNrvOanjMwAAAC HTTP/1.1" 200 -
{'USER_KEY': 'TEST_USER', 'MESSAGE': 'RED', 'USER_TYPE': 'USER'}
192.168.1.5 - - [18/Apr/2021 18:15:42] "POST /socket.io/?EIO=4&transport=polling&sid=Vo6Qo1Suk5U6dnG0AAAE HTTP/1.1" 200 -
192.168.1.6 - - [18/Apr/2021 18:15:42] "GET /socket.io/?EIO=4&transport=polling&t=NZdif2X&b64=1&sid=6pJ6UIkNrvOanjMwAAAC HTTP/1.1" 200 -
{'USER_KEY': 'TEST_USER', 'MESSAGE': 'RED', 'USER_TYPE': 'USER'}
192.168.1.5 - - [18/Apr/2021 18:15:45] "POST /socket.io/?EIO=4&transport=polling&sid=Vo6Qo1Suk5U6dnG0AAAE HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:45] "GET /socket.io/?EIO=4&transport=polling&sid=Vo6Qo1Suk5U6dnG0AAAE HTTP/1.1" 200 -
disconnected85Gy1EZr-XWm32-6AAAF
192.168.1.5 - - [18/Apr/2021 18:15:47] "GET /socket.io/?EIO=4&transport=polling HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:47] "POST /socket.io/?EIO=4&transport=polling&sid=Axb2tK8BaYqGqrgGAAAG HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:47] "GET /socket.io/?EIO=4&transport=polling&sid=Axb2tK8BaYqGqrgGAAAG HTTP/1.1" 200 -
192.168.1.5 - - [18/Apr/2021 18:15:47] "POST /socket.io/?EIO=4&transport=polling&sid=Axb2tK8BaYqGqrgGAAAG HTTP/1.1" 200 -
connected
received message: { "USER_KEY": "TEST_USER", "MESSAGE": "asdfasdfasdf", "USER_TYPE":"USER"}<class 'str'>
RLGgcjYRr3G8437zAAAH
192.168.1.6 - - [18/Apr/2021 18:15:58] "GET /socket.io/?EIO=4&transport=polling&t=NZdifE4&b64=1&sid=6pJ6UIkNrvOanjMwAAAC HTTP/1.1" 200 -
disconnected1nrEBb6Xny3dpELEAAAD
192.168.1.5 - - [18/Apr/2021 18:16:12] "GET /socket.io/?EIO=4&transport=polling&sid=Axb2tK8BaYqGqrgGAAAG HTTP/1.1" 200 -
disconnectedRLGgcjYRr3G8437zAAAH

我在Java中使用的处理socket.io的库导入如下：

代码语言：javascript
运行
复制
    implementation ('io.socket:socket.io-client:2.0.0') {
        exclude group: 'org.json', module: 'json'
    }

任何关于是什么导致我的android客户端断开连接的洞察力都将是非常感谢的。

更新:当我在 80端口上运行其部署状态的服务器时，这个问题就消失了。只有在端口5000上直接运行烧瓶时，这个问题才会持续存在。

java
android-studio
flask
socket.io
EN

回答 1

Stack Overflow用户

发布于 2022-03-15 09:27:57

现在有点晚了，但如果能帮上忙的话。

我想你是在投票。

来自doc的机制：https://socket.io/docs/v3/how-it-works/#upgrade-mechanism

您必须设置传输模式：(在Kotlin)

代码语言：javascript
运行
复制
val opts = IO.Options()
opts.transports = arrayOf(WebSocket.NAME)
socket = IO.socket("url", opts)

WebSocket.NAME的意思是"websocket“

票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/67155099

复制
相关文章

相似问题

领券

腾讯云开发者

扫码关注腾讯云开发者

扫码关注腾讯云开发者

领取腾讯云代金券

热门产品

热门推荐

更多推荐

Copyright © 2013 - 2025 Tencent Cloud. All Rights Reserved. 腾讯云 版权所有 

深圳市腾讯计算机系统有限公司 ICP备案/许可证号：粤B2-20090059 深公网安备号 44030502008569

腾讯云计算（北京）有限责任公司 京ICP证150476号 |  京ICP备11018762号 | 京公网安备号11010802020287

问题归档专栏文章快讯文章归档关键词归档开发者手册归档开发者手册 Section 归档