From 35da156ad2950779a2eb1fd1f43d65a0976a8646 Mon Sep 17 00:00:00 2001
From: sledgehammer999 <hammered999@gmail.com>
Date: Sat, 16 Nov 2013 20:24:56 +0200
Subject: [PATCH] WebUI: Don't gzip too small payloads.

---
 src/webui/httpresponsegenerator.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/webui/httpresponsegenerator.cpp b/src/webui/httpresponsegenerator.cpp
index 91d15c28b..69cb6e76e 100644
--- a/src/webui/httpresponsegenerator.cpp
+++ b/src/webui/httpresponsegenerator.cpp
@@ -119,7 +119,11 @@ bool HttpResponseGenerator::gCompress(QByteArray &dest_buffer) {
 }
 
 QByteArray HttpResponseGenerator::toByteArray() {
-  if (m_gzip && m_message.size() > 0) {// prevents writing a useless and wasteful header
+  // A gzip seems to have 23 bytes overhead.
+  // Also "content-encoding: gzip\r\n" is 26 bytes long
+  // So we only benefit from gzip if the message is bigger than 23+26 = 49
+  // If the message is smaller than 49 bytes we actually send MORE data if we gzip
+  if (m_gzip && m_message.size() > 49) {
     QByteArray dest_buf;
     if (gCompress(dest_buf)) {
       setValue("content-encoding", "gzip");