For Server-Sent Events (SSE) what Nginx proxy configuration is appropriate?

Long-running connection Server-Sent Events (SSE) are a long-running HTTP connection**, so for starters we need this: proxy_http_version 1.1; proxy_set_header Connection ""; NOTE: TCP connections in HTTP/1.1 are persistent by default, so setting the Connection header to empty does the right thing and is the Nginx suggestion. Chunked Transfer-Encoding Now an aside; SSE responses don't set a Content-