websocket

MQTT.js not connecting from websockets

由 杀马特。学长 韩版系。学妹 提交于 2021-02-10 16:22:57
问题 I'm trying to connect to websocket client of MQTT.js but unable to get a handshake with the server. My Code : <html> <head> <title>test Ws mqtt.js</title> </head> <body> <script src="//unpkg.com/mqtt@2.5.0/dist/mqtt.min.js"></script> <script> var options = { clientId: 'service-3Kx03pKnM2', connectTimeout: 5000, hostname: 'xxx.xxx.xxx', port: 8000 }; var client = mqtt.connect(options); client.on('connect', function () { client.subscribe('presence'); client.publish('presence', 'Hello mqtt') });

MQTT.js not connecting from websockets

由 自古美人都是妖i 提交于 2021-02-10 16:21:46
问题 I'm trying to connect to websocket client of MQTT.js but unable to get a handshake with the server. My Code : <html> <head> <title>test Ws mqtt.js</title> </head> <body> <script src="//unpkg.com/mqtt@2.5.0/dist/mqtt.min.js"></script> <script> var options = { clientId: 'service-3Kx03pKnM2', connectTimeout: 5000, hostname: 'xxx.xxx.xxx', port: 8000 }; var client = mqtt.connect(options); client.on('connect', function () { client.subscribe('presence'); client.publish('presence', 'Hello mqtt') });

Socket.io 3 and PHP integration

由 青春壹個敷衍的年華 提交于 2021-02-10 14:50:23
问题 I using PHP SocketIO class to connect NodeJS application and send messages. Everything worked wonderfully with Socket.io 2 but after upgrade to version 3 the PHP integration is stopped working. When I send request I am getting this response: HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Sec-WebSocket-Accept: hNcappwZIQEbMz7ZGWS71lNcROc= But I don't see anything on NodeJS side, even when I tried to log any connection to the server by using "connection" event. This is

How can I close the client-side JavaScript 'Hub' connection in SignalR?

由 坚强是说给别人听的谎言 提交于 2021-02-10 13:16:57
问题 I have followed this tutorial. But there is no hint how to close the Websocket connection via the HubConnection class in signalr.js -file. The file is V1.0.4. This solution does not resolve my problem because I am using the microsofts javascript-library. Here ist the code: var lHubConnection = null; var Init = function () { // create instance lHubConnection = new signalR.lHubConnectionBuilder().withUrl("/chatHub").build(); // receive message lHubConnection.on("ReceiveMessage", function

Can we use Web-Sockets for Communication between Microservices?

由 穿精又带淫゛_ 提交于 2021-02-10 12:33:06
问题 We have a use case where we have two microservices, Microservice A pushes a long-running task to Microservice B . Microservice B starts processing the task and keeps updating the status of the task. Now Microservice A has to constantly poll Microservice B for an update on the status of the task. We don't have queues in our current setup. So, We thought of creating a web socket between Microservice A and Microservice B so that Microservice B can push the status updates to Microservice A .

How to use web sockets in C# .NET Core 3.1?

由 心不动则不痛 提交于 2021-02-10 07:49:25
问题 I am trying to implement live notifications in my web application. Only the users which are administrators in my web app should see the notifications. So I setup the web socket in my startup.cs file which I think is not the right way Startup.cs var webSocketOptions = new WebSocketOptions() { KeepAliveInterval = TimeSpan.FromSeconds(120), ReceiveBufferSize = 4 * 1024 }; app.UseWebSockets(webSocketOptions); app.Use(async (context, next) => { if (context.Request.Path == "/ws") { if (context

API Gateway Websockets - Dealing with 10 minute idle connection timeout

由 廉价感情. 提交于 2021-02-10 06:44:19
问题 I have simple chatroom application and if no users send any messages, the websocket closes after about 10 minutes. What is the best solution to keep the connection alive without reconnecting? 回答1: It is always possible to send pings, the other side will have to reply with pong. (proof) This tutorial might help you with that. 来源： https://stackoverflow.com/questions/58401092/api-gateway-websockets-dealing-with-10-minute-idle-connection-timeout

How to unit test Spring WebSocketStompClient

由 时光总嘲笑我的痴心妄想 提交于 2021-02-10 05:20:48
问题 I've a Stompclient which connects to a Spring boot server and performs some subscriptions. The code coverage for this websocket client is at 0%. I can only find the code samples for how to unit test Spring boot Websocket server. But this is client side verifying the Stompclient is working fine. Please let me know if my question is missing any details. Here's my sample connect method which I need to write unit test case for. StompSession connect(String connectionUrl) throws Exception {

How to unit test Spring WebSocketStompClient

由 巧了我就是萌 提交于 2021-02-10 05:20:40
问题 I've a Stompclient which connects to a Spring boot server and performs some subscriptions. The code coverage for this websocket client is at 0%. I can only find the code samples for how to unit test Spring boot Websocket server. But this is client side verifying the Stompclient is working fine. Please let me know if my question is missing any details. Here's my sample connect method which I need to write unit test case for. StompSession connect(String connectionUrl) throws Exception {

tomcat websocket servlet listening port

由 こ雲淡風輕ζ 提交于 2021-02-09 20:45:00
问题 I'm trying to write a servlet that uses org.apache.catalina.websocket.WebSocketServlet . I've found an example of websocket chat, but I can't figure out how can I specify the listening port for a websocket server (which is implemented in this servlet)? For example I need to listen for clients connection on port 11337 . But how I can express this? OK, here is the (simplified) code: public class TestServlet extends WebSocketServlet { private static final Logger logger = LoggerFactory.getLogger
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