Websocket关闭代码：1006节点Android okhttp3 AmazonEc2

Question

我在Websocket ws is closed with code: 1006 reason:中遇到问题

环境

Amazon EC2 Instance  : t2.micro Ubuntu 18.04
Node : v12.16.3
Websocket : https://github.com/websockets/ws : 7.3.0
MongoDb : shell version v4.2.6
MongoDriver : NodeJs 3.5.7
Okhhtp3 : implementation 'com.squareup.okhttp3:okhttp:4.6.0'

我正在从Websockets中获取数据-> MongoDb并尝试填充到回收站视图中。如果我执行log.d，数据就很好了，但是当我进入回收站视图时，它在应用程序启动时就很好了，而在进行活动时又一次了，但是之后我开始出现1006错误。

NodeJs（服务器）

// Websocket variables
const WebSocket = require('ws');
const wss = new WebSocket.Server({ port: 8000 });
console.log('Websocket active on port 8000...');

// Connect To Mongo
MongoClient.connect(url, { useUnifiedTopology: true, authSource: 'admin' }, function (err, client) {
    if (err) {
        throw err;
    }

    const db = client.db(dbName);

    // New Connection
    wss.on('connection', function connection(ws) {

        // Message Received
        ws.on('message', function incoming(message) {

            // Json Parse String To Access Child Elements
            var iJson = JSON.parse(message);
            const c = db.collection('chats');
            c.find({ "owner": iJson.owner_id }).toArray(function (err, docs) {
                ws.send(JSON.stringify(docs));
            });
        });

        // Connection Closed
        ws.on('close', function close(code, reason) {
            console.log('ws is closed with code: ' + code + ' reason: ' + reason);
        });
    });
});

Android（客户端）

private WebSocket webSocket;

// Initiate The Socket Connection
private void initiateSocketConnection() {

    OkHttpClient client = new OkHttpClient();
    Request request = new Request.Builder().url(WebSocketClient.SERVER_PATH).build();
    webSocket = client.newWebSocket(request, new SocketListener());

}

// Private WebSocketListener Class
private class SocketListener extends WebSocketListener {

    public SocketListener() {
        super();
    }

    @Override
    public void onClosed(@NotNull WebSocket webSocket,
        int code,
        @NotNull String reason) {
        super.onClosed(webSocket,
            code,
            reason);

        Log.d("TAG",
            "onClosed: " + code + "-" + reason);

    }

    @Override
    public void onFailure(@NotNull WebSocket webSocket,
        @NotNull Throwable t,
        [email protected] Response response) {
        super.onFailure(webSocket,
            t,
            response);
    }

    @Override
    public void onMessage(@NotNull WebSocket webSocket,
        @NotNull String text) {
        super.onMessage(webSocket,
            text);

        String chat = "{\"chat\":" + text + "}";

        Log.d("TAG",
            "onMessage: " + chat);

        lIndividualChatList.clear();

        try {
            JSONObject jsonObject = new JSONObject(chat.trim());

            // Check If User Array Has Anything
            JSONArray returnArray = jsonObject.getJSONArray("chat");

            for (int l = 0; l < returnArray.length(); l++) {
                if (returnArray.length() > 0) {

                    // Get The Json Object
                    JSONObject returnJSONObject = returnArray.getJSONObject(l);

                    // Get Details
                    String owner = returnJSONObject.optString("owner");
                    lIndividualChatList.add(new IndividualListModel(owner));
                }
            }

            // Use The Adapter To Populate The Recycler View
            aIndividualChatList = new IndividualListAdapter(lIndividualChatList);
            rvList.setAdapter(aIndividualChatList);

            aIndividualChatList.notifyDataSetChanged();

        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onOpen(@NotNull WebSocket webSocket,
        okhttp3.@NotNull Response response) {
        super.onOpen(webSocket,
            response);
    }
}

Answer 1

更奇怪的是，它在失败之前已经工作了一两次，这引起了混乱。如果它总是失败并且喜欢一个logcat，那就太好了。最好的方法是在服务器和客户端上记录所有可能的错误/故障，然后查看消息。

首先将日志放入失败中

@Override
public void onFailure(@NotNull WebSocket webSocket, @NotNull Throwable t, [email protected] Response response) {
    super.onFailure(webSocket, t, response);

    Log.d("TAG", "websocket failure: " + t + response);
}

那给出了以下消息：

: `websocket failure: android.view.ViewRootImpl$CalledFromWrongThreadException: 
Only the original thread that created a view hierarchy can touch its views.null`

然后在此包装回收者视图的人口

getActivity().runOnUiThread(new Runnable() {
public void run() {

  // Poplulate the recycler view here....

}