MEDIUM: connection: Implement and extented PROXY Protocol V2
This commit modifies the PROXY protocol V2 specification to support headers
longer than 255 bytes allowing for optional extensions. It implements the
PROXY protocol V2 which is a binary representation of V1. This will make
parsing more efficient for clients who will know in advance exactly how
many bytes to read. Also, it defines and implements some optional PROXY
protocol V2 extensions to send information about downstream SSL/TLS
connections. Support for PROXY protocol V1 remains unchanged.
diff --git a/include/types/server.h b/include/types/server.h
index 54ab813..7a977e3 100644
--- a/include/types/server.h
+++ b/include/types/server.h
@@ -53,10 +53,15 @@
#define SRV_WARMINGUP 0x0040 /* this server is warming up after a failure */
#define SRV_MAINTAIN 0x0080 /* this server is in maintenance mode */
#define SRV_DRAIN 0x0100 /* this server has been requested to drain its connections */
-/* unused: 0x0200, 0x0400 */
-#define SRV_SEND_PROXY 0x0800 /* this server talks the PROXY protocol */
+/* unused: 0x0200, 0x0400, 0x0800 */
#define SRV_NON_STICK 0x1000 /* never add connections allocated to this server to a stick table */
+/* configured server options for send-proxy (server->pp_opts) */
+#define SRV_PP_V1 0x0001 /* proxy protocol version 1 */
+#define SRV_PP_V2 0x0002 /* proxy protocol version 2 */
+#define SRV_PP_V2_SSL 0x0004 /* proxy protocol version 2 with SSL*/
+#define SRV_PP_V2_SSL_CN 0x0008 /* proxy protocol version 2 with SSL and CN*/
+
/* function which act on servers need to return various errors */
#define SRV_STATUS_OK 0 /* everything is OK. */
#define SRV_STATUS_INTERNAL 1 /* other unrecoverable errors. */
@@ -106,6 +111,7 @@
int rdr_len; /* the length of the redirection prefix */
char *cookie; /* the id set in the cookie */
char *rdr_pfx; /* the redirection prefix */
+ int pp_opts; /* proxy protocol options (SRV_PP_*) */
struct proxy *proxy; /* the proxy this server belongs to */
int served; /* # of active sessions currently being served (ie not pending) */