Ndoejs SSE res.write() not sending data in streams

Question

I am trying to add SSE(Server sent events) in NodeJs, But when I am sending response using res.write() the data is not getting sent, but only after writing

Answer 1

If your Express server is behind a firewall or proxy server, they will often wait until the server closes the connection before sending the entire response. Instead, you need to have a connection between the browser and the server that allows the 'Connection': 'keep-alive'.