正确主动关闭websocket，异常关闭处理-Toy模板网

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CloseEvent.code

下面是一个示例的WebSocket错误码表格，包括错误码、错误处理方法和错误码说明：

错误码	错误如何处理	错误码说明
1000	关闭连接	正常关闭连接
1001	关闭连接后几秒后重连	终端离开或刷新页面
1002	关闭连接上报日志给开发者	协议错误
1003	关闭连接上报日志给开发者	数据类型错误
1005	关闭连接提示未知的错误几秒后重连	无关闭状态码
1006	关闭连接几秒后重连	连接意外中断
1007	关闭连接上报日志给开发者，几秒后重连	非法数据
1008	关闭连接笙宝日志给开发者，几秒后重连	消息内容违反策略
1009	关闭连接，上报日志给开发者，几秒后重连	消息过大
1010	关闭连接，上报日志给开发者，几秒后重连	扩展协商失败
1011	关闭连接	服务器内部错误
1012-1014	关闭连接	保留未使用的错误码
1015	关闭连接	TLS握手失败

0-999 暂未使用

关闭状态码	简称	原因
1000	正常关闭	连接成功地完成了创建它的目的。
1001	离开	端点消失了，可能是因为服务器故障，也可能是因为浏览器离开了打开连接的页面。
1002	协议错误	由于协议错误，端点正在终止连接。
1003	不支持的数据	由于端点接收到的数据类型无法接受，连接被终止。(例如，纯文本端点接收二进制数据
1004	暂时保留	保留。将来可能会定义一个含义。
1005	No Status Rcvd	Reserved. Indicates that no status code was provided even though one was expected.
1006	Abnormal Closure	Reserved. Indicates that a connection was closed abnormally (that is, with no close frame being sent) when a status code is expected.
1007	Invalid frame payload data	The endpoint is terminating the connection because a message was received that contained inconsistent data (e.g., non-UTF-8 data within a text message).
1008	Policy Violation	The endpoint is terminating the connection because it received a message that violates its policy. This is a generic status code, used when codes 1003 and 1009 are not suitable.
1009	Message Too Big	The endpoint is terminating the connection because a data frame was received that is too large.
1010	Mandatory Ext.	The client is terminating the connection because it expected the server to negotiate one or more extension, but the server didn’t.
1011	Internal Error	The server is terminating the connection because it encountered an unexpected condition that prevented it from fulfilling the request.
1012	Service Restart	The server is terminating the connection because it is restarting.
1013	Try Again Later	The server is terminating the connection due to a temporary condition, e.g. it is overloaded and is casting off some of its clients.
1014	Bad Gateway	The server was acting as a gateway or proxy and received an invalid response from the upstream server. This is similar to 502 HTTP Status Code.
1015	TLS handshake	Reserved. Indicates that the connection was closed due to a failure to perform a TLS handshake (e.g., the server certificate can’t be verified).
1016–2999		For definition by future revisions of the WebSocket Protocol specification, and for definition by extension specifications.
3000–3999		For use by libraries, frameworks, and applications. These status codes are registered directly with IANA. The interpretation of these codes is undefined by the WebSocket protocol.
4000–4999		For private use, and thus can’t be registered. Such codes can be used by prior agreements between WebSocket applications. The interpretation of these codes is undefined by the WebSocket protocol.

后面的不想翻译，请读者自行翻译，帮你贴一个翻译传送门

关闭websocket,Java,websocket,服务器,网络协议

关闭监听

TS

WebSocket.onclose = (event) => {
  console.log(event.code);
};

java

    @Override
    public void onClosed(WebSocket webSocket, int code, String reason) {
        super.onClosed(webSocket, code, reason);
        // todo 根据状态码执行重连
        if(code != 1000){
        
        }
    }

JavaScript (Node.js)：

const WebSocket = require('ws');

const ws = new WebSocket('ws://localhost:8080');

ws.on('open', () => {
  // WebSocket连接成功
});

ws.on('message', (data) => {
  // 处理接收到的消息
});

ws.on('close', () => {
  // WebSocket连接关闭
});

ws.on('error', (error) => {
  // 处理WebSocket错误
  ws.close();

  // 执行重连逻辑
  setTimeout(() => {
    const newWs = new WebSocket('ws://localhost:8080');
    // ...
  }, 5000);
});

Python：

import websocket

def on_message(ws, message):
    # 处理接收到的消息

def on_close(ws):
    # WebSocket连接关闭

def on_error(ws, error):
    # 处理WebSocket错误
    ws.close()

    # 执行重连逻辑
    time.sleep(5)
    new_ws = websocket.WebSocketApp("ws://localhost:8080", on_open=on_open, on_message=on_message, on_close=on_close, on_error=on_error)
    # ...

def on_open(ws):
    # WebSocket连接成功

ws = websocket.WebSocketApp("ws://localhost:8080", on_open=on_open, on_message=on_message, on_close=on_close, on_error=on_error)
ws.run_forever()

Java Android：

import javax.websocket.*;

@ClientEndpoint
public class WebSocketClient {
    @OnOpen
    public void onOpen(Session session) {
        // WebSocket连接成功
    }

    @OnMessage
    public void onMessage(String message) {
        // 处理接收到的消息
    }

    @OnClose
    public void onClose(Session session, CloseReason closeReason) {
        // WebSocket连接关闭
    }

    @OnError
    public void onError(Session session, Throwable error) {
        // 处理WebSocket错误
        try {
            session.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

        // 执行重连逻辑
        try {
            Thread.sleep(5000);
            WebSocketContainer container = ContainerProvider.getWebSocketContainer();
            Session newSession = container.connectToServer(WebSocketClient.class, URI.create("ws://localhost:8080"));
            // ...
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

###. C#：

using System;
using System.Net.WebSockets;
using System.Threading;
using System.Threading.Tasks;

public class WebSocketClient {
    private ClientWebSocket _client;

    public async Task Connect() {
        _client = new ClientWebSocket();
        await _client.ConnectAsync(new Uri("ws://localhost:8080"), CancellationToken.None);

        // WebSocket连接成功

        // 接收消息
        while (_client.State == WebSocketState.Open) {
            var buffer = new ArraySegment<byte>(new byte[4096]);
            WebSocketReceiveResult result = await _client.ReceiveAsync(buffer, CancellationToken.None);

            if (result.MessageType == WebSocketMessageType.Text) {
                string message = Encoding.UTF8.GetString(buffer.Array, buffer.Offset, result.Count);
                // 处理接收到的消息
            }
        }
    }

    public async Task Close() {
        await _client.CloseAsync(WebSocketCloseStatus.NormalClosure, "Closing", CancellationToken.None);

        // WebSocket连接关闭

        // 执行重连逻辑
        await Task.Delay(5000);
        await Connect();
    }
}

以下是使用Kotlin和Swift语言实现关闭WebSocket并根据异常执行重连的示例：文章来源地址https://www.toymoban.com/news/detail-794196.html

Kotlin:

import okhttp3.*
import okhttp3.WebSocket
import okhttp3.WebSocketListener
import java.util.concurrent.TimeUnit

class WebSocketClient : WebSocketListener() {
    private lateinit var webSocket: WebSocket

    fun connect() {
        val okHttpClient = OkHttpClient.Builder()
            .retryOnConnectionFailure(true)
            .pingInterval(10, TimeUnit.SECONDS)
            .build()

        val request = Request.Builder()
            .url("ws://localhost:8080")
            .build()

        webSocket = okHttpClient.newWebSocket(request, this)
    }

    override fun onOpen(webSocket: WebSocket, response: Response) {
        // WebSocket连接成功
    }

    override fun onMessage(webSocket: WebSocket, text: String) {
        // 处理接收到的消息
    }

    override fun onClosed(webSocket: WebSocket, code: Int, reason: String) {
        // WebSocket连接关闭
    }

    override fun onFailure(webSocket: WebSocket, t: Throwable, response: Response?) {
        // 处理WebSocket错误
        webSocket.close(1000, null)

        // 执行重连逻辑
        Thread.sleep(5000)
        connect()
    }
}

fun main() {
    val client = WebSocketClient()
    client.connect()
    // ...
}

Swift:

import Foundation
import Starscream

class WebSocketClient: WebSocketDelegate {
    private var socket: WebSocket?

    func connect() {
        socket = WebSocket(url: URL(string: "ws://localhost:8080")!)
        socket?.delegate = self
        socket?.connect()
    }

    func websocketDidConnect(socket: WebSocketClient) {
        // WebSocket连接成功
    }

    func websocketDidReceiveMessage(socket: WebSocketClient, text: String) {
        // 处理接收到的消息
    }

    func websocketDidDisconnect(socket: WebSocketClient, error: Error?) {
        // WebSocket连接关闭

        // 执行重连逻辑
        DispatchQueue.main.asyncAfter(deadline: .now() + 5) {
            self.connect()
        }
    }

    func websocketDidReceiveData(socket: WebSocketClient, data: Data) {
        // 处理接收到的数据
    }
}

let client = WebSocketClient()
client.connect()
// ...