From 770e4208cc8ea745c38921a5ab0d912c324f82d6 Mon Sep 17 00:00:00 2001
From: Keith Winstein <keithw@mit.edu>
Date: Sun, 10 Mar 2013 16:41:44 -0400
Subject: [PATCH] DiffServ codepoint and ECN: Roll back to just ECT (no DSCP)

---
 src/network/network.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/network/network.cc b/src/network/network.cc
index 99515a3..20e1f7d 100644
--- a/src/network/network.cc
+++ b/src/network/network.cc
@@ -159,8 +159,8 @@ Connection::Socket::Socket()
   }
 #endif
 
-  /* set diffserv values to AF42 + ECT */
-  int dscp = 0x92; /* OS X does not have IPTOS_DSCP_AF42 constant */
+  //  int dscp = 0x92; /* OS X does not have IPTOS_DSCP_AF42 constant */
+  int dscp = 0x02; /* ECN-capable transport only */
   if ( setsockopt( _fd, IPPROTO_IP, IP_TOS, &dscp, sizeof (dscp)) < 0 ) {
     //    perror( "setsockopt( IP_TOS )" );
   }