Ajax or Websockets for small transmissions
javascript,html,ajax,websocket,socket.io
You can use websockets. The difference is with websockets the client is always connected. You'll have a handler that handles messages (which could be just json blobs maybe with some kind of messageType field) as they stream in from the client. This means the server side handling is basically the...
The most efficient notification system for a web application
node.js,websocket,notifications,xmpp
XMPP over websocket would be a good fit as it simply builds on your existing infrastructure.
Where do sockets fit into the Flux unidirectional data flow?
javascript,websocket,socket.io,reactjs,flux
There's really no difference in how you use Flux with WebSockets or plain old HTTP requests/polling. Your stores are responsible for emitting a change event when the application state changes, and it shouldn't be visible from the outside of the store if that change came from a UI interaction, from...
WebRTC Failed to Add a Third Peer: “Cannot set remote answer in state stable”
javascript,html5,websocket,webrtc
I might be wrong, but these two must be your major problems: signaling_server.send(... I am not seeing any target here, so guessing that the server just broadcasts this message to everyone. When you are sending an sdp to already established peer connection, you are bound to get the error which...
WebSocket connection failed: WebSocket opening handshake was canceled
javascript,amazon-web-services,amazon-ec2,websocket
There was an SSL certificate mismatch between the Haskell server and the Apache server. The Haskell server had to be rebuilt with information concerning the new certificates for the instance. Further complicating this the proper SSL library (libssl0.9.8 libssl-dev) was not installed on the EC2 instance which was causing me...
How to defer reading until writing is done?
javascript,node.js,mongodb,websocket,socket.io
In a multiplayer game, you need to do important state logic on the server, or at least do some sort of state validation on the server side. You are only noticing this "hack" because it is easy to do. You have to design your multiplayer server to be resistant against...
Why does nodejs have incremental memory usage?
Seeing increased memory footprint by node.js application is completely normal behaviour. Node constantly analyses your running code, generates optimised code, reverts to unoptimised code (if needed) etc. All this requires quite a lot of memory even for the most simple of applications (Node.js itself is from a large part written...
Spring-boot app displaying JMS messages on WebPage via WebSocket
websocket,jms,spring-boot,stomp,sockjs
The Spring Integration comes to the rescue. You can write <int-jms:message-driven-channel-adapter> to read messages from JMS queue and forward them to the <int-websocket:outbound-channel-adapter>. Where the last one just sends messages to the connected WebSocket session(s). See these Spring Integration samples on the matter: https://github.com/spring-projects/spring-integration-samples/tree/master/basic/jms https://github.com/spring-projects/spring-integration-samples/tree/master/basic/web-sockets UPDATE To send the message...
Why does Jetty JSR356 behave differently with regards to checkOrigin and modifyHandshake
Ah, one of the many ambiguous and ill defined parts of the JSR-356 spec. You might want to read the open bugs against the spec. There are many real world examples of scenarios that are rendered impossible if the original 1.x spec is follow exactly. Now, to tackle the specific...
How do I use RSVP deferreds with WebSocket?
javascript,websocket,deferred,rsvp.js
Instead of assigning the deferred to d, I should create an array (d = []), assign each deferred to the i position of the array (d[i] = RSVP.defer()), and push d[i] into the socketsOpened array. Here's the new code: var numberOfThreads = 6, openSockets = function () { var //...
Creating a real-time chat with Python and websocket
python,websocket,chat,real-time
You need to use a websocket aware web server, like Tornado to handle websocket traffic. To multiplex chat messages between different chats and users, there are solutions like Redis and ZeroMQ that you can use for message multiplexing. However, it sounds like you have zero experience and starting point, so...
Firefox crashes when a websocket call answered
firefox,websocket,asterisk,sipml
Finally I solved my issue with Google Chrome 43, I didn't want to use it but I had it coming.
Haxe server-client exchange on all platforms
sockets,websocket,client,server,haxe
What you are looking for is Haxe Remoting, which is part of the Standard Library Haxe remoting is a way to communicate between different platforms. With Haxe remoting, applications can transmit data transparently, send data and call methods between server and client side. relevant sources: http://haxe.org/manual/std-remoting.html http://api.haxe.org/haxe/remoting/ As side note,...
websocket + vuejs: screen flickering, visible mustache code
Based on dandavis' comment, I added a "hidden" class (display: none) to the DOM, and v-class="hidden: !done", to toggle the visibility of the DOM. done is a key-value pair in the data of the ViewModel. HTML: <div class="message hidden" v-repeat="messages" v-class="hidden: !done">...</div> Javascript: onMessage: function (e) { new Vue({ el:...
WebSocket messages are lost while client is reconnecting
websocket,activemq,stomp,spring-websocket
Certainly do-able. You'll need to change some things up. It's all described here: Using Queue Browsers to Implement Durable Topic Subscriptions But i'll give you a quick rundown. Some important changes to your messaging structure: Subscribe your websocket consumers to "/queue/"s instead of topics and setup queue browsing. Send messages...
WebSocket serverSocket.Accept() doesn't trigger
c#,websocket,network-programming
The server code must run on the machine that you want to connect to. That would be the machine that has IP 37.187.143.226. So either run everything locally and use target IP "localhost" or run the server on that other box and use the 37 IP. Also be aware that...
apache websockets reverse proxy
apache,websocket,reverse-proxy
Yes, its possible. We have used Apache to reverse proxy websocket. Make sure that your Apache is built with the module: mod_proxy_wstunnel. Which is supported after Version 2.4.5. Then you just need to find out which port for your websocket is using. If it is also using 3050, then you...
WebSocket Error in Eclipse using tomcat
You did not provide enough details to answer the question absolutely. But i had a similar problem The Error during the handshake happens, because Tomcat has its own api for websockets. Thus you might have added the JSR implementation or something similar as javax.websocket-api in your pom.xml there comes a...
Socket between browser and iOS devices
If the HTML editor is in the browser and the app is on the smartphone, then it is unlikely that you can connect directly from a browser to a smartphone. From the browser, you only have two connection options: an Ajax request or a webSocket. And, you need to be...
How to improve nodejs / socket io performance?
javascript,node.js,performance,websocket,socket.io
You can actually improve performance in three ways : 1 - Reduce the size of instructions you send on the socket. You can achieve this by : Minimify your JSON Use MessagePack which is smaller than JSON 2 - Send just what you need. If you need to move the...
WebSocket connect another websocket in this browser
I'd suggest using a mocking framework to mock the server in this situation. I have succesfully used mock-socket to do exactly this, eg. (quoting example from README.md): var mockServer = new MockServer('ws://localhost:8080'); mockServer.on('connection', function(server) { server.on('message', function(data) { server.send('hello world!'); } ); } ); Hope that helps. Cheers,...
nginx uwsgi websockets 502 Bad Gateway upstream prematurely closed connection while reading response header from upstream
django,nginx,websocket,redis,uwsgi
I found the issue. My [runserver] socket (app.sock) should be pointed under upstream django and my [wsserver] socket (django.sock) should be pointed under location /ws/ like so: upstream django { server unix:/opt/django/app.sock; } server { listen 80 default_server; charset utf-8; client_max_body_size 20M; sendfile on; keepalive_timeout 0; large_client_header_buffers 8 32k; location...
ratchet HttpServer class not found
php,websocket,composer-php,ratchet
PHP namespaces are case sensitive, so try Http instead of http: use Ratchet\Http\HttpServer; ...
How to listen to socket emit on sails.io.js?
angularjs,node.js,websocket,sails.js,sails.io.js
Following wZVanG's answer. This is how I did it, using the angular-sails angular module. $sails.get('/twitter/open').then(function(resp) { console.log(resp.status); }, function(resp) { alert('Houston, we got a problem!'); }); $sails.on('tweet', function(message) { console.log(message); }); That logs every tweet received to the browser's console....
Implementing WebSocket in Java Swing Application
java,websocket,java-ee-6,java-ee-7
One Approach is to use Jetty WebSocket Client API, Hopping that you already implemented Server Side Web Socket Tutorial Maven Dependency org.eclipse.jetty.websocket websocket-client ${project.version} package examples; import java.net.URI; import java.util.concurrent.TimeUnit; import org.eclipse.jetty.websocket.client.ClientUpgradeRequest; import org.eclipse.jetty.websocket.client.WebSocketClient; public class SimpleEchoClient { public static void main(String[] args) { String destUri = "ws://echo.websocket.org"; if (args.length...
How to separately assign data to each connected user inside Socket.IO?
mysql,node.js,websocket,socket.io
There are ways to attach data to each socket in socket.io, but it's probably easier to put your data in an associative array, where the keys are the socket id's. Just create the key-value pair upon connection, and make sure you delete the pair on the disconnect event with the...
Websocket establish bulletproof connection
javascript,firefox,websocket,coffeescript
Its not actually throwing an Error, the program execution continues. Its simply logging the error (asynchronously) to the console. To handle connection failures, you can bind to the sockets onerror event. Something like this could work: function establishWSConnection(url) { return new Promise(function(res, rej) { var ws = new WebSocket(url); ws.onerror...
Websocket does not seem to connect
It seems the library for org.java_websocket.client.WebSocketClient is not available: The logcat messages Unable to resolve superclass of Lcom/example/chat/MainActivity$2; and java.lang.NoClassDefFoundError: com.example.chat.MainActivity$2 indicate that the anonymous class you are creating in this piece of code mWebSocketClient = new WebSocketClient(uri) { ... } Cannot be created, because the class definition for WebSocketClient...
Inject an application scoped managed bean in a websocket
This is really not right. @ServerEndpoint("/mediador") @ManagedBean(eager = true) @ApplicationScoped public class Mediador implements Serializable { WS (JSR-356 WebSocket) API and JSF API are completely independent from each other. They know nothing from each other and won't take mixed annotations from each other into account. Effectively, you end up with...
Connect to VM using Websocket
javascript,websocket,vcloud-director-rest-api
Close code 1006 means that the socket was just 'dropped' (a TCP disconnect) without a web socket protocol close frame being received (https://tools.ietf.org/html/rfc6455 section 7.1.5) There's any number of reasons why this could occur - it could be things like spotty network infrastructure or even flaky implementations of parts of...
Extract client X509 certificate from a secured websocket connection
authentication,websocket,ssl-certificate,x509certificate
I found a solution to get the client registered as the UserPrincipal of the session, accessible by session.getUserPrincipal(). The UserPricipal is "the authenticated user for the session". You nneed then to add an authentiation service to your ServletContextHandler, as following: //Create SSL ContextFactory with appropriate attributes ... //Create the connector...
How to wait for WebSocket response in PNaCl
c++,google-chrome,websocket,google-nativeclient,ppapi
The function myecho() blocks MyPPPluginInstance::HandleMessage() and somehow in turn blocks receiving from WebSocket. I added a pp::SimpleThread as a new data member of class MyPPPluginInstance and dispatch myecho() to another thread through pp::SimpleThread::message_loop().PostWork(). It works smoothly....
Websocket.disconnect() method throws java.net.SocketException: Socket closed
It is because the implementation of disconnect() method does not synchronize with the thread which is created in the implementation of connect() method. codebutler/android-websockets is not of commercial quality. The disconnect() method does not perform even the closing handshake which is required by RFC 6455. Use another WebSocket library if...
Handle websocketpp connection path
c++,c++11,websocket,boost-asio,websocket++
Well, i found soultion by myself :) You should use following code for that purpose: server::connection_ptr con = s.get_con_from_hdl(hdl); std::string path = con->get_resource(); ...
PHP base64 encoding drops incorrect answer
The function sha1() will already encode the hash value, so you should probably calculate the binary hash before encoding: $rawSha1Accept = sha1($rawAccept, true); // Note the second parameter $accept = base64_encode($rawSha1Accept); ...
Websocket frame, TCP segment: the relationship?
sockets,networking,tcp,websocket
You are correct. You could have added the TCP segment is wrapped in an IP packet send the IP packet out ...
Check URL of websocket client - python
First of all, I guess with "the URL of the website that the client is using" you mean window.location, a JavaScript object which is available in a browser environment. There might be many ways to transmit this to your backend, but should this approach be secure? I am not even...
HTTP and SignalR
c#,asp.net,sockets,websocket,signalr
You are making things too complicated. A typical example of using signalr is: an html file using JavaScript to connect to a signalr Server when the page is loaded. we call this signalr client. a signalr server written in c#. it can be a winform or console or service. the...
PHP Fat-Free-Framework plus Node.js and Secure Websockets
php,node.js,https,websocket,fat-free-framework
Well, actually your question is how to enable CORS support on node.js?! A short google search gives you a hand full for resources for doing this in express.js. Once you send the right CORS headers in your node application, your browser will not shout for exceptions anymore. Nevertheless, if you...
Mask & Unmask websocket data in python
I found an really helpful script that did exactly what i needed. http://sidekick.windforwings.com/2013/03/minimal-websocket-broadcast-server-in.html ...
How to emit websocket message from outside a websocket endpoint?
python,flask,websocket,socket.io,flask-socketio
Quoting from Miguel Grinberg's response on an open issue page on the Flask-SocketIO GitHub: When you want to emit from a regular route you have to use socketio.emit(), only socket handlers have the socketio context necessary to call the plain emit(). So as an example: from flask_socketio import SocketIO app...
Play Specs2: FakeRequest to WebSocket server
scala,playframework,websocket,specs2
From Typesafe you have an example to tes WebSockets /* * Copyright (C) 2009-2014 Typesafe Inc. <http://www.typesafe.com> */ package play.it.http.websocket import play.api.test._ import play.api.Application import scala.concurrent.{Future, Promise} import play.api.mvc.{Handler, Results, WebSocket} import play.api.libs.iteratee._ import java.net.URI import org.jboss.netty.handler.codec.http.websocketx._ import org.specs2.matcher.Matcher import akka.actor.{ActorRef, PoisonPill, Actor, Props} import play.mvc.WebSocket.{Out, In} import...
how to check whether web socket is active or not using SRWebsocket
May be this sample code help you: ...
Play a PCM stream sampled at 16 kHz
This is not a sample rate problem, because the AudioBufferSourceNode resamples the audio to the AudioContext's rate when playing. What you should do here, is to have a little queue of buffers you feed using the network, and then, play your buffers normally like you do, but from the buffer...
Websocket SSL connection
javascript,node.js,ssl,websocket
The https module is rejecting your self-signed cert (as one would hope). You can force it to stop checking by passing a rejectUnauthorized: false option (which WebSocket will pass down to https): var ws = new WebSocket('wss://localhost:15449/', { protocolVersion: 8, origin: 'https://localhost:15449', rejectUnauthorized: false }); ...
Implementing multi user chat in iPad App
I would not implement all of that on my own nor host the service myself. You should think about using an existing system for this. (I am not in any way affiliated with the next suggestions) I have used: firebase.com and parse.com Both should work for your usecase, but firebase...
WebSocket Service update Scope in Angular (Using ngWebSocket)?
javascript,angularjs,websocket
Looking at the source it does not seem to invoke digest cycle using scope.$apply within the $on handler. Which means that angular does not know about any update to its view bindings, so no change gets reflected in the view. So you would need to do it manually in your...
How can I override the Origin header in Chrome when connecting to a WebSocket?
javascript,google-chrome,websocket
Web pages cannot change the Origin header, but extensions can modify the request headers via the chrome.webRequest API. But ws:// and wss:// are not supported by this API, so this doesn't help unless the server also supports other means of communication via http(s) (e.g. long-polling). There is still a solution...
My Websocket takes forever to connect
java,websocket,glassfish,ipv6,tyrus
So the cause of the troubles is the initialization of an InitialContext by Tyrus in order to re-use a (scheduled) executor service if one is available. Normally this fails fast if none is available (and this is logged as a debug-message, see further on), but in this case it failed...
Phantomjs not rendering Angular + Websockets page
angularjs,websocket,phantomjs,prerender
You would need to compile PhantomJS 2.0 since 1.9.8 does not support websockets. We are running a compiled PhantomJS 2.0 in production for https://prerender.io so you could try just using our production server pointing to a public staging server of yours.
How to implement a WebSocket server serving only 1 client at a time
Use validate to decide when to accept or refuse a connection: static bool accept_new_connections = true; bool validate(server *, websocketpp::connection_hdl) { return accept_new_connections; } void on_open(server *, websocketpp::connection_hdl hdl) { accept_new_connections = false; } void on_close(server *, websocketpp::connection_hdl hdl) { accept_new_connections = true; } Obviously to make above work you...
SignalR client on Windows Server 2008R2 using Server Sent Events
NET Framework 4.5 on Win7 and Win2008 R2 doesn't support the ClientWebSocket class and this is what the SignalR client uses for websocket transport. Since using websocket fails the client falls back to ServerSentEvents.
How to send contents of a webrtc stream directly to my server?
The key to sending a WebRTC stream to the server is to pass an answer SDP to your peer connection that includes an address/port combination that directs the WebRTC media streams to a server. Its common with Media Resources Function (MRF) like Dialogics XMS server to route a media stream...
If I switch from Javascript polling to websockets, will that reduce server load?
I've implemented a number of push (websocket) and polling mechanisms (HTTP), in my experience if there are multiple client machines all continuously polling the server for status updates and you switch that around so that the server instead fires a status update out to each client when one occurs there...
Websocket call timeout on Javascript Client
That specific server, PHP-Websockets, does not provide support for the wss:// protocol (secure connection, similar to https:// for HTTP traffic). Change the connection line to: socket = new WebSocket("ws://myurl.com:9000"); Alternatively, if you need TLS support, PHP-Websockets might not be the best server for you. I made the decision to not...
Wait for Websocket Rails event to finish in test environment
ruby-on-rails,selenium,rspec,websocket,capybara
I solved this by writing a helper method that accepts a block of code. The helper method records the current time, then adds a function to the ajax start event that records the time that the ajax started in a sessionStorage variable. I can then run the code block passed...
Rails Rspec test that a controller has triggered Websockets event
ruby-on-rails,testing,rspec,websocket
expect(triggerable = double).to receive(:trigger) .with('new_activity', 'Shared') allow(WebsocketRails).to receive(:[]).and_return(triggerable) get :myroute ...
socket io Websocket Disconnected Node js
javascript,node.js,express,websocket,socket.io
I'm going to bet that you have node inspect set to break on caught exceptions. Try unchecking "Pause On Caught Exceptions" near the right hand side of the debugger. Otherwise, you are likely using a 3rd party library that is using socket.io that is throwing this error....
When is WebSocket.onmessage triggered?
The W3C spec for the WebSocket API says that a message event should be dispatched "when a WebSocket message has been received": When a WebSocket message has been received with type type and data data, the user agent must queue a task to follow these steps: ... Let event be...
Deploy python web server on AWS Elastic Beanstalk
python,amazon-web-services,websocket,webserver,elastic-beanstalk
AWS doesn't "know" anything about your content. The webserver that you install will be configured to point to the "root" directory in which index.html (or something equivalent) should be. Since it depends on which webserver (django, flask, Jinja etc) you install - you should lookup its documentation!...
Play: stop WebSocket actor in case of failure
scala,playframework,websocket,akka
Looking at the code of WebSocketActorSupervisor, which is where the Props is converted to actor, has default strategy overridden as override def supervisorStrategy = OneForOneStrategy() { case _ => SupervisorStrategy.Stop } So, Stop is the default behavior....
Meteor: Error during WebSocket handshake: Unexpected response code: 400
This can be caused by one of the three reasons: Some ISPs may use proxies which don't support websockets. This is more apparent over 3G networks If your app has crashed. Meteor tries to connect to the server and can't since it's not online. This can also happen if Nginx...
Reactjs working with sockets: rerender when socket receive a message
javascript,websocket,coffeescript,reactjs
You shouldn't mutate @state directly, but instead use setState to enqueue a state update which, once performed, will cause the component to re-render. You should consider @state and its value as read-only most of the time. In your case, replace @state.signals.push { message: event.data, direction: 'in' } with @setState signals:...
Is users socket id a critical information? (security point of view)
javascript,websocket,socket.io
socket.id is just a string identifier for the socket object that can be used internally by the server or can be shared with other clients as a "handle" for that user. A client can't do anything with sockets that the server doesn't specifically support a command for (other than connect/disconnect)....
KdB+ - HTML5 websocket deserializer not working for Long data type
As rightly pointed out in the comment by user2393012, the serializer for KdB+ maps 0N(null) to the min value of the data type. Hence a null value of Long type gets serialized to -9223372036854775808. The deserializer is handling this integer min correctly for 16 bit and 32 bit values as...
primefaces push not working in Safari using AWS Tomcat7
tomcat,primefaces,safari,websocket,push
This problem occurred due to a missing configuration the web.xml. On analysing tomcat's log (catalina.out), found an error when Safari was trying to connnect to tomcat, ERROR org.atmosphere.cpr.AsynchronousProcessor - Invalid request state. AsyncContext#startAsync not supported. On searching with this error, found a solution from https://groups.google.com/forum/#!topic/atmosphere-framework/D5-yrW6NzLU Added <async-supported>true</async-supported> to shiroFilter in...
Springboot @ServerEndPoint “Failed to find the root WebApplicationContext.”
java,spring,websocket,spring-boot,jsr356
thanks to Sergi Almar and his answer, i have managed to use the Spring implementation instead of the javax.websocket implementation: public class SpringWebSocketHandler extends TextWebSocketHandler { private static final Logger LOG = LoggerFactory.getLogger(SpringWebSocketHandler.class); private final Set<CommunicationObserver> observers = Sets.newConcurrentHashSet(); @Autowired private MessageContext mc; @Override protected void handleTextMessage(WebSocketSession session, TextMessage message)...
How To find a WebSocket from a REST bean
A Websocket connection starts with a HTTP handshake. On the handshake you also receive cookies (e.g. the session ID cookie) so you get access to the HTTP session. From the JSR 356 Java API for WebSocket spec: Because websocket connections are initiated with an http request, there is an association...
Remove a square bracket and receiving JSON properly in nodejs/websocket enviroment?
javascript,json,node.js,multidimensional-array,websocket
This is your problem: streamArray.push(fields); updateSockets({ streamArray: streamArray }); It does create the one-slot array that is superfluous. My guess is that you either wanted to move the streamArray.push(…) inside of the for loop (and then push fields[i] or something), or you just should do updateSockets({ streamArray: fields }); and...
Sending message from Websocket server to client java-websocket
You need to start() Runnable class, not run() it directly
Mosquitto 1.4.2 Websocket support
websocket,mqtt,iot,broker,mosquitto
While the 1.4.x codebase includes Websocket support it has to be enabled at build time and relies on the libwebsocket library. The builds currently available in the RedHat/Fedora yum repos do not have Webosockets enabled as there is no libwebsocket package available. I assume CentOS is using the same srpms....
How to send messages from server to a specific client
You have to call: _clientsocket.Send(...); ...
How to track 500 errors on WebSockets (ws://)
The problem was with web.config. I added <httpRuntime targetFramework="4.5.1" /> to system.web section and it finally began to work...
How to set WebSocket Origin Header from Javascript?
javascript,websocket,cross-domain
The simple solution would be to simply create an entry in your hosts file to map test.com to 123.123.123.123. You would need to remove this entry later when you want to connect the "real" test.com. A less hacky solution would require the use of a proxy which can re-write your...
Terminate previous autobahn websocket call when a new message arrives
python,websocket,twisted,autobahn
I think you need some kind of context object that represents your user session (or search session). In that context you can put a latestSearchId which you increment every search. Then you could add the searchId parameter to main_search. And supposing you have a loop or some kind of different...
Ruby: Establish client connection on particular URI path with ruby TCPSocket
ruby,sockets,websocket,tcpserver,tcpsocket
To put a bit more context to Steffen Ullrich's answer: This can't be done in the way you imagine (or ask) it to be done. The part of the URL you are asking about (/the/path) - known as the URI, "Unique Resource Identifier" - is HTTP specific and isn't applicable...
Websocket (java ee) how to get role of current user
security,java-ee,websocket,wildfly
For this you will have to modify the Websocket handshake. You can do this as below: 1) Modify you websocket endpoint to use custom configurator @ServerEndpoint(value = "/someWSEndpoint", configurator = SomeCustomConfigurationClass.class) public class SomeWSService { ... } 2) Modify WS Handshake similar to public class SomeCustomConfigurationClass extends ServerEndpointConfig.Configurator { @Override...
WebSocket support for Ejabberd
It appears that from Ejabberd 15.03 version, WebSockets are fully supported as stated here: Ejabberd 15.03...
Get events listened by socket
node.js,sockets,websocket,socket.io
The versions of node and socket.io on server(using socket.io-client) should match to the respective versions on socket.io server. Also, the [email protected] seems to be stable build for this package (as I read in many online references). ...
Flux and WebSockets
javascript,websocket,reactjs,flux
You should have a singleton module (not a store or an action creator) that handles opening the socket and directing traffic through. Then any action creator that needs to send/receive data via the socket just requires the module and makes use of its generic methods. Here's a quick and dirty...
Tornado behind Nginx, should I use TCP nodelay config in python or nginx.conf?
In general, if you are using nodelay and proxies, you should turn it on at all levels to see any benefit. Otherwise any piece of the system that doesn't have nodelay will insert the delays you're trying to avoid. According to the nginx docs for tcp_nodelay, it applies only when...
Add extra headers to websocket connection from browser in Dart
security,authentication,websocket,dart,dart-html
You will have to use cookies which are automatically sent by websocket as well but you can't customize the headers sent with a WebSocket request. You can also send receive and send a session token in the payload. See https://devcenter.heroku.com/articles/websocket-security#authentication-authorization for more detailed explanation....
websockets - reject a socket connection
You can either use socket.close() or socket.terminate() to close the connection.
Jetty Web Socket Timeout
javascript,sockets,websocket,jetty
From client side you are connecting to some web socket. If port (9995 in your case) is available to connect to then it means that some program (in server mode) is listening and responding. And does something - answers with some data. So, you can connect to such program if...
Scaling a decoupled realtime server alongside a standard webserver
python,websocket,real-time,scalability
If the scenario is a) The main web server raises a message upon an action (let's say a record is inserted) b ) He notifies the appropriate real-time server you could decouple these two steps by using an intermediate pub/sub architecture that forwards the messages to the indended recipient. An...
Faye Ruby Server Side Publish on Heroku - EventMachine buffer overflow detected
heroku,websocket,out-of-memory,publish-subscribe,faye
Ok, I realised the mistake. I was creating the client outside the EM.run block. Once i moved the initialization inside the EM.run block, everything was working fine....
python - When are WebSocketHandler and TornadoWebSocketClient completely deleted?
python,object,websocket,tornado,deletion
The WebSocket code currently contains some reference cycles, which means that objects are not cleaned up until the next full GC. Even worse, __del__ methods can actually prevent the deletion of an object (in python 3.3 and older: https://docs.python.org/3.3/library/gc.html#gc.garbage), so it's difficult to tell when things are actually getting deleted....
asp.net 5 web application with websockets on Windows 7
It's not possible... SignalR Supported Platforms for SignalR to use WebSockets, Windows Server 2012 or Windows 8 is required Does self hosted signalr require windows server 2012 in order to use websockets HTTP.SYS prior to Windows 8/2012 has no built in support for WebSockets, so although .NET 4.5 contains WebSocket...
Ajax vs Socket.io
ajax,node.js,websocket,socket.io-1.0
Many of the generic tradeoffs between webSocket and Ajax are discussed here: websocket vs rest API for real time data? Some tradeoff issues for mobile devices are discussed here: Cordova: Sockets, PushNotifications, or repeatedly polling server? In a nutshell, if your data is primarily server-driven and then needs to be...
Websocket client disconnect websocket4net
android,websocket,mono,websocket4net
Why don't you send Ping frames (or unsolicited Pong frames) periodically from the client to the server in order to keep the WebSocket connection? By default, many server implementations disconnect idle connections automatically.
Jetty WebSocket Client Doesn't work for Binary Listener
java,javascript,websocket,jetty-9,libwebsockets
There was a hard to find problem with the server I was calling. A very specific configuration of invocation arguments was causing the binary listener to not be called. Nothing about the Jetty client or WebSockets in general involved here.
Why I got so many connection events on Node's HTTP server?
javascript,node.js,http,websocket,socket.io
The connections you're logging from the HTTP server are to be expected and are related to the resources that are being used on your HTML pages (JS, CSS, images, favicon, etc). The port numbers you're logging are the client side port numbers. While not random, they will change for every...
Django, socket.io, node.js - Manage private messages and group conversations
django,node.js,websocket,redis,socket.io
Private messages Node keeps track of which sockets that are currently connected with an array of socket ids keyed with some user identifier. You pretty much said it there. Django does not need to know the socket id of the target user, but node.js does. If you want to...
em-websocket send() send from one client to another through 2 servers
ruby-on-rails,ruby,websocket,em-websocket
I've found a way how to do it through em-websocket gem! You need just define variables outside of eventmachine block. Something like that require 'em-websocket' message_sender = nil EM.run do # message sender EM::WebSocket.run(host: '0.0.0.0', port: 19108) do |ws| ws.onopen { message_sender = ws } ws.onclose { message_sender = nil...