proxy middleware should use raw http proxy for SSE requests

Author: aldas

middleware/proxy.go

@@ -364,9 +364,8 @@ func ProxyWithConfig(config ProxyConfig) echo.MiddlewareFunc {
 
 				// Proxy
 				switch {
-				case c.IsWebSocket():
+				case c.IsWebSocket(), req.Header.Get(echo.HeaderAccept) == "text/event-stream":
 					proxyRaw(tgt, c).ServeHTTP(res, req)
-				case req.Header.Get(echo.HeaderAccept) == "text/event-stream":
 				default:
 					proxyHTTP(tgt, c, config).ServeHTTP(res, req)
 				}