SimpleTwitter | simple twitter clone for testing new technologies | Runtime Evironment library
kandi X-RAY | SimpleTwitter Summary
kandi X-RAY | SimpleTwitter Summary
A simple twitter clone for testing new technologies like AngularJS, NodeJS and MongoDB.
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Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of SimpleTwitter
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QUESTION
I am trying to implement a server client project which needs the server to send data to the client every 5 minutes with the client only asking in the beginning of connection. Server-sent events seem to be the go-to solution.
I have tried to use the functions given in the Javalin Documents. I am able to receive a response with a simple get from the server. But I couldn't establish a sse connection. The code enters the lambda function in the server but the client does not receive anything. I am not sure if the client or the server, or even both have a problem. The only output we get from the codes below is "connected" on the server side. Thank you in advance.
Code for the server
...ANSWER
Answered 2019-Mar-27 at 22:01Turns out the problem was not the code. By looking at the developer tools on chrome, we saw the following:
"Access to resource at 'http://localhost:7000/sse' from origin 'null' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource."
When we installed a chrome extention called "Allow-Control-Allow-Origin: *", we were able to see the output.
Also, here are the updated better working codes:
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