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The data can be passed in both directions as “packets”, without breaking the connection and additional HTTP-requests. Websocket is a protocol on top of a tcp connection (like how http is on top of tcp) . so you should either change your server implementation to a Websocket (you can find many java Websocket libraries in internet) or change your client to a socket. See full list on developer.mozilla.org Using websockets directly might be troublesome, it's advised you use a framework to abstract this layer, so they can easily fallback to other methods when not supported in the client. For example, this is a direct implementation using Express js and Websockets directly. This example also allows you to use the same server for HTTP calls.
Now that we’ve got our basic app up and running let’s move on to creating our websocket service. Creating our Websocket Service To get us started we’ll be creating a very simple service that will connect to any given URL and return an RxJS subject that we can subscribe to in other services/components in order to listen for any incoming messages from the connected socket.
That is the onmessage event listener. Once you've opened your connection, you can begin transmitting data to the server. To do this, call the WebSocket object's send() method for each message you want to send: exampleSocket. send ("Here's some text that the server is urgently awaiting!"); You can send data as a string, Blob, or ArrayBuffer. Put Flash socket policy file to your server unless you use web-socket-ruby or em-websocket as your WebSocket server.
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