src/pkg/http/server.go | 3 +++

diff --git a/src/pkg/http/server.go b/src/pkg/http/server.go
index a2a0e14246de08f03093bd1d544143854330bc8b..5d623e696b4d05c42edb60d28f96b41c268e984b 100644
--- a/src/pkg/http/server.go
+++ b/src/pkg/http/server.go
@@ -285,6 +285,9 @@ 		_, connectionHeaderSet := w.header["Connection"]
 		if !connectionHeaderSet {
 			w.SetHeader("Connection", "keep-alive")
 		}
+	} else if !w.req.ProtoAtLeast(1, 1) {
+		// Client did not ask to keep connection alive.
+		w.closeAfterReply = true
 	}
 
 	// Cannot use Content-Length with non-identity Transfer-Encoding.