[MEDIUM] implement tcp-smart-connect option at the backend
This new option enables combining of request buffer data with
the initial ACK of an outgoing TCP connection. Doing so saves
one packet per connection which is quite noticeable on workloads
mostly consisting in small objects. The option is not enabled by
default.
diff --git a/include/types/proxy.h b/include/types/proxy.h
index 7664618..715f21d 100644
--- a/include/types/proxy.h
+++ b/include/types/proxy.h
@@ -118,6 +118,7 @@
#define PR_O2_NOLOGNORM 0x00000020 /* don't log normal traffic, only errors and retries */
#define PR_O2_LOGERRORS 0x00000040 /* log errors and retries at level LOG_ERR */
#define PR_O2_SMARTACC 0x00000080 /* don't immediately ACK request after accept */
+#define PR_O2_SMARTCON 0x00000100 /* don't immediately send empty ACK after connect */
/* This structure is used to apply fast weighted round robin on a server group */
struct fwrr_group {