bugfixing websocket error
This commit is contained in:
MuslemRahimi
parent
1479cc127c
commit
48d9a0a508
274
fastify/app.js
274
fastify/app.js
@ -123,20 +123,10 @@ let sendInterval;
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fastify.register(async function (fastify) {
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fastify.get("/realtime-data", { websocket: true }, (connection, req) => {
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// Send a welcome message to the client
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let symbol = "";
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let isConnectionActive = true;
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let ws;
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//connection.socket.send('hi from server');
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// Listen for incoming messages from the client
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connection.socket.on("message", (message) => {
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symbol = message.toString("utf-8");
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console.log("Received message from client:", symbol);
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// If you want to dynamically update the subscription based on client's message
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updateSubscription();
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});
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//======================
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const login = {
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event: "login",
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data: {
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@ -147,69 +137,72 @@ fastify.register(async function (fastify) {
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const subscribe = {
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event: "subscribe",
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data: {
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ticker: "", // Initial value; will be updated dynamically
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ticker: "",
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},
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};
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function updateSubscription() {
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subscribe.data.ticker = symbol;
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if (ws && ws.readyState === WebSocket.OPEN) {
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ws.send(JSON.stringify(subscribe));
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}
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}
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// Create a new WebSocket instance for your backend
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const ws = new WebSocket("wss://websockets.financialmodelingprep.com");
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function connectToFMP() {
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ws = new WebSocket("wss://websockets.financialmodelingprep.com");
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// Handle WebSocket connection open
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ws.on("open", function open() {
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console.log("Connected to FMP WebSocket");
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ws.send(JSON.stringify(login));
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setTimeout(() => updateSubscription(), 2000);
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});
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ws.on("open", function open() {
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ws.send(JSON.stringify(login));
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wait(2000); //2 seconds in milliseconds
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ws.send(JSON.stringify(subscribe));
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});
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ws.on("error", function (error) {
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console.error("FMP WebSocket error:", error);
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});
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// Handle WebSocket errors
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ws.on("error", function (error) {
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console.error("WebSocket error:", error);
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// Handle the error gracefully, you might want to notify the client or log it.
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// For now, let's close the connection if an error occurs
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connection.socket.close();
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});
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ws.on("close", function () {
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console.log("FMP WebSocket closed. Attempting to reconnect...");
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setTimeout(connectToFMP, 5000);
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});
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ws.on("message", function (data, flags) {
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const stringData = data.toString("utf-8");
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ws.on("message", function (data) {
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if (!isConnectionActive) return;
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try {
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const jsonData = JSON.parse(stringData);
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const bpData = jsonData.bp;
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const stringData = data.toString("utf-8");
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try {
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const jsonData = JSON.parse(stringData);
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const bpData = jsonData.bp;
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// Check if bpData is a number and not equal to zero
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if (typeof bpData === "number" && bpData !== 0) {
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if (connection.socket.readyState === WebSocket.OPEN && !isSend) {
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connection.socket.send(JSON.stringify({ bp: bpData }));
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isSend = true;
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setTimeout(() => {
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isSend = false;
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}, 800);
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if (typeof bpData === "number" && bpData !== 0) {
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if (connection.socket.readyState === WebSocket.OPEN) {
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connection.socket.send(JSON.stringify({ bp: bpData }));
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}
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}
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} catch (error) {
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console.error("Error parsing JSON:", error);
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}
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} catch (error) {
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console.error("Error parsing JSON:", error);
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}
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});
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}
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connectToFMP();
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connection.socket.on("message", (message) => {
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symbol = message.toString("utf-8");
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console.log("Received message from client:", symbol);
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updateSubscription();
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});
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//======================
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// Handle client disconnect
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connection.socket.on("close", () => {
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console.log("Client disconnected");
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connection?.socket?.close();
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// Check if the WebSocket is open before trying to close it
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if (ws.readyState === WebSocket.OPEN) {
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try {
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ws.close();
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} catch (e) {
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console.error("Error while closing WebSocket:", e);
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}
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}
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isConnectionActive = false;
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if (ws) ws.close();
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});
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connection.socket.on("error", (error) => {
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console.error("WebSocket error:", error);
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isConnectionActive = false;
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if (ws) ws.close();
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});
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});
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});
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@ -219,18 +212,10 @@ fastify.register(async function (fastify) {
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"/realtime-crypto-data",
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{ websocket: true },
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(connection, req) => {
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// Send a welcome message to the client
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let symbol = "";
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let isConnectionActive = true;
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let ws;
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// Listen for incoming messages from the client
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connection.socket.on("message", (message) => {
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symbol = message.toString("utf-8");
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console.log("Received message from client:", symbol);
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// If you want to dynamically update the subscription based on client's message
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updateSubscription();
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});
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//======================
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const login = {
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event: "login",
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data: {
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@ -241,64 +226,65 @@ fastify.register(async function (fastify) {
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const subscribe = {
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event: "subscribe",
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data: {
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ticker: "", // Initial value; will be updated dynamically
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ticker: "",
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},
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};
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function updateSubscription() {
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subscribe.data.ticker = symbol;
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if (ws && ws.readyState === WebSocket.OPEN) {
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ws.send(JSON.stringify(subscribe));
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}
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}
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// Create a new WebSocket instance for your backend
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const ws = new WebSocket("wss://crypto.financialmodelingprep.com");
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function connectToCryptoFMP() {
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ws = new WebSocket("wss://crypto.financialmodelingprep.com");
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// Handle WebSocket connection open
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ws.on("open", function open() {
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console.log("Connected to Crypto FMP WebSocket");
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ws.send(JSON.stringify(login));
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setTimeout(() => updateSubscription(), 2000);
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});
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ws.on("open", function open() {
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ws.send(JSON.stringify(login));
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wait(2000); //2 seconds in milliseconds
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ws.send(JSON.stringify(subscribe));
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ws.on("error", function (error) {
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console.error("Crypto FMP WebSocket error:", error);
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});
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ws.on("close", function () {
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console.log(
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"Crypto FMP WebSocket closed. Attempting to reconnect..."
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);
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setTimeout(connectToCryptoFMP, 5000);
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});
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ws.on("message", function (data) {
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if (!isConnectionActive) return;
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const stringData = data.toString("utf-8");
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if (connection.socket.readyState === WebSocket.OPEN) {
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connection.socket.send(stringData);
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}
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});
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}
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connectToCryptoFMP();
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connection.socket.on("message", (message) => {
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symbol = message.toString("utf-8");
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console.log("Received message from client:", symbol);
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updateSubscription();
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});
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// Handle WebSocket errors
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ws.on("error", function (error) {
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console.error("WebSocket error:", error);
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// Handle the error gracefully, you might want to notify the client or log it.
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// For now, let's close the connection if an error occurs
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connection.socket.close();
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});
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// Handle WebSocket messages
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ws.on("message", function (data, flags) {
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const stringData = data.toString("utf-8");
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if (connection.socket.readyState === WebSocket.OPEN && !isSend) {
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connection.socket.send(stringData);
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//console.log(stringData)
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isSend = true;
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setTimeout(() => {
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isSend = false;
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}, 800);
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//wait(2000);
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}
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//wait(2000);
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});
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//======================
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// Handle client disconnect
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connection.socket.on("close", () => {
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console.log("Client disconnected");
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connection?.socket?.close();
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// Check if the WebSocket is open before trying to close it
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if (ws.readyState === WebSocket.OPEN) {
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try {
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ws.close();
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} catch (e) {
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console.error("Error while closing WebSocket:", e);
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}
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}
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isConnectionActive = false;
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if (ws) ws.close();
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});
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connection.socket.on("error", (error) => {
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console.error("WebSocket error:", error);
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isConnectionActive = false;
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if (ws) ws.close();
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});
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}
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);
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@ -312,9 +298,12 @@ fastify.register(async function (fastify) {
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let jsonData;
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let sendInterval;
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let clientIds = [];
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let isConnectionActive = true;
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// Function to send filtered data to the client
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const sendData = async () => {
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if (!isConnectionActive) return;
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const filePath = path.join(
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__dirname,
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"../app/json/options-flow/feed/data.json"
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@ -324,34 +313,28 @@ fastify.register(async function (fastify) {
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const fileData = fs.readFileSync(filePath, "utf8");
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jsonData = JSON.parse(fileData);
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// Do nothing if clientIds is empty
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if (clientIds.length === 0) {
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console.log("Client IDs list is empty, doing nothing.");
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return; // Exit function if clientIds is empty
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return;
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}
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// Filter out elements whose ids are not in clientIds
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const filteredData = jsonData.filter(
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(item) => !clientIds.includes(item.id)
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);
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// Send the filtered data back to the client
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connection.socket.send(JSON.stringify(filteredData));
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if (connection.socket.readyState === WebSocket.OPEN) {
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connection.socket.send(JSON.stringify(filteredData));
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}
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} else {
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console.error("File not found:", filePath);
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clearInterval(sendInterval);
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connection?.socket?.close();
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console.error("Connection closed");
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throw new Error("This is an intentional uncaught exception!");
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}
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} catch (err) {
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console.error("Error sending data to client:", err);
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// Don't close the connection here, just log the error
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}
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};
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// Send data to the client initially
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sendData();
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// Start sending data periodically
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sendInterval = setInterval(sendData, 5000);
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@ -360,10 +343,7 @@ fastify.register(async function (fastify) {
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try {
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const parsedMessage = JSON.parse(message);
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if (parsedMessage?.ids) {
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//console.log("Received ids from client:", parsedMessage.ids);
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clientIds = parsedMessage.ids; // Update the ids list from the client
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} else {
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//console.log("No ids received in the message");
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clientIds = parsedMessage.ids;
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}
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} catch (error) {
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console.error("Error parsing incoming message:", error);
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@ -373,26 +353,42 @@ fastify.register(async function (fastify) {
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// Handle client disconnect
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connection.socket.on("close", () => {
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console.log("Client disconnected");
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isConnectionActive = false;
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clearInterval(sendInterval);
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});
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// Handle server crash cleanup
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const closeHandler = () => {
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console.log("Server is closing. Cleaning up resources...");
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// Handle WebSocket errors
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connection.socket.on("error", (error) => {
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console.error("WebSocket error:", error);
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isConnectionActive = false;
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clearInterval(sendInterval);
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connection.socket.close();
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};
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// Don't close the connection here, let the client handle reconnection
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});
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// Add close handler to process event
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process.on("exit", closeHandler);
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process.on("SIGINT", closeHandler);
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process.on("SIGTERM", closeHandler);
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process.on("uncaughtException", closeHandler);
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process.on("unhandledRejection", closeHandler);
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// Send initial data
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sendData();
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}
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);
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});
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fastify.setErrorHandler((error, request, reply) => {
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console.error("Server error:", error);
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reply.status(500).send({ error: "Internal Server Error" });
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});
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// Graceful shutdown
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process.on("SIGINT", async () => {
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console.log("Received SIGINT. Shutting down gracefully...");
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await fastify.close();
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process.exit(0);
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});
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process.on("SIGTERM", async () => {
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console.log("Received SIGTERM. Shutting down gracefully...");
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await fastify.close();
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process.exit(0);
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});
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// Function to start the server
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function startServer() {
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if (!serverRunning) {
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