Support for Server-SentEvents (SSE)

[thisisaaronland]

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Tell us about your request

Perhaps this is related to https://github.com/aws/apprunner-roadmap/issues/13 but it doesn't seems as though SSE events are supported yet?

I've deployed a simple application but at the moment the server attempts to send a message to the browser it triggers a The connection to https://{APPNAME}.awsapprunner.com/sse/ was interrupted while the page was loading. error.

Describe alternatives you've considered

Uncertain. I'd really like to be able to use SSE messages with App Runner applications but maybe just falling back to a plain-vanilla EC2 + ALB setup.