From 6ac98ac1bee3b59602dfd155b821cfd0489bfc3e Mon Sep 17 00:00:00 2001
From: Willy Tarreau <w@1wt.eu>
Date: Thu, 6 Sep 2018 11:48:44 +0200
Subject: [PATCH] MINOR: connection: add new function conn_get_proxy()

This function returns the proxy associated to a connection. For front
connections it returns the frontend, and for back connections it
returns the backend. This will be used to retrieve some configuration
parameters from within a mux.
---
 include/proto/connection.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/include/proto/connection.h b/include/proto/connection.h
index a68392656..e5b1542d0 100644
--- a/include/proto/connection.h
+++ b/include/proto/connection.h
@@ -988,6 +988,28 @@ static inline const struct mux_ops *conn_get_best_mux(struct connection *conn,
 
 }
 
+/* returns a pointer to the proxy associated with this connection. For a front
+ * connection it returns a pointer to the frontend ; for a back connection, it
+ * returns a pointer to the backend.
+ */
+static inline struct proxy *conn_get_proxy(const struct connection *conn)
+{
+	struct listener *l;
+	struct server *s;
+
+	/* check if it's a frontend connection */
+	l = objt_listener(conn->target);
+	if (l)
+		return l->bind_conf->frontend;
+
+	/* check if it's a backend connection */
+	s = objt_server(conn->target);
+	if (s)
+		return s->proxy;
+
+	return objt_proxy(conn->target);
+}
+
 /* installs the best mux for incoming connection <conn> using the upper context
  * <ctx>. If the mux protocol is forced, we use it to find the best
  * mux. Otherwise we use the ALPN name, if any. Returns < 0 on error.