From 70b05c8096e1bffa7d4fba8fe231e72e826e305c Mon Sep 17 00:00:00 2001
From: goldsimon <goldsimon>
Date: Fri, 30 Oct 2009 10:02:06 +0000
Subject: [PATCH] Increased default value for TCP_MSS to 536, updated default
 value for TCP_WND to 4*TCP_MSS to keep delayed ACK working.

---
 CHANGELOG              | 4 ++++
 src/include/lwip/opt.h | 8 ++++----
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index 611be3b3..10a9b251 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -46,6 +46,10 @@ HISTORY
 
   ++ Bugfixes:
 
+  2009-10-30: Simon Goldschmidt
+  * opt.h: Increased default value for TCP_MSS to 536, updated default
+    value for TCP_WND to 4*TCP_MSS to keep delayed ACK working.
+
   2009-10-28: Kieran Mansley
   * tcp_in.c, tcp_out.c, tcp.h: re-work the fast retransmission code
     to follow algorithm from TCP/IP Illustrated
diff --git a/src/include/lwip/opt.h b/src/include/lwip/opt.h
index df62680b..1f3f9bcd 100644
--- a/src/include/lwip/opt.h
+++ b/src/include/lwip/opt.h
@@ -759,7 +759,7 @@
  * (2 * TCP_MSS) for things to work well
  */
 #ifndef TCP_WND
-#define TCP_WND                         2048
+#define TCP_WND                         (4 * TCP_MSS)
 #endif 
 
 /**
@@ -785,14 +785,14 @@
 #endif
 
 /**
- * TCP_MSS: TCP Maximum segment size. (default is 128, a *very*
- * conservative default.)
+ * TCP_MSS: TCP Maximum segment size. (default is 536, a conservative default,
+ * you might want to increase this.)
  * For the receive side, this MSS is advertised to the remote side
  * when opening a connection. For the transmit size, this MSS sets
  * an upper limit on the MSS advertised by the remote host.
  */
 #ifndef TCP_MSS
-#define TCP_MSS                         128
+#define TCP_MSS                         536
 #endif
 
 /**