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kotlinlang

<https://stackoverflow.com/questions/34261928/can-server-sent-events-sse-with-eventsource-pass-parameter-by-post|https://stackoverflow.com/questions/34261928/can-server-sent-events-sse-with-eventsource-pass-parameter-by-post> :upside_down_face: 

But what I can do if I want pass big data to sse server

If you really want to do it you could reimplement the relevant http4k SSE connector . I think it would work - it's just that the connectors filter for GET requests as per the spec. Otherwise you can follow the advice in that SO, or maybe post to a different endpint first, store the payload and then get the response from a redirect (as long as you can intercept the redirect set the headers to request the correct content type) - which means it would have to be an XMLhttpRequest 

OK I impl my own jetty and MyJettyEventStreamHandler just like orign file by only remove `_method_ == "GET"`   and it works.