X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/b6d7efab2c4bffa3fabd55b166e44cca8ac1391f..97e8290d683afff06fe2e9a4cec522a871a96df3:/sdk/go/httpserver/logger.go

diff --git a/sdk/go/httpserver/logger.go b/sdk/go/httpserver/logger.go
index 8886f9517d..59981e3e55 100644
--- a/sdk/go/httpserver/logger.go
+++ b/sdk/go/httpserver/logger.go
@@ -53,10 +53,22 @@ func LogRequests(h http.Handler) http.Handler {
 
 		logRequest(w, req, lgr)
 		defer logResponse(w, req, lgr)
-		h.ServeHTTP(w, req)
+		h.ServeHTTP(rewrapResponseWriter(w, wrapped), req)
 	})
 }
 
+// Rewrap w to restore additional interfaces provided by wrapped.
+func rewrapResponseWriter(w http.ResponseWriter, wrapped http.ResponseWriter) http.ResponseWriter {
+	if hijacker, ok := wrapped.(http.Hijacker); ok {
+		return struct {
+			http.ResponseWriter
+			http.Hijacker
+		}{w, hijacker}
+	} else {
+		return w
+	}
+}
+
 func Logger(req *http.Request) logrus.FieldLogger {
 	return ctxlog.FromContext(req.Context())
 }