MINOR: cli: make "show fd" report the mux and mux_ctx pointers when available

This is handy to quickly distinguish H2 connections as well as to easily
access the h2c context. It could be backported to 1.8 to help during
troubleshooting sessions.

diff --git a/src/cli.c b/src/cli.c
index f19b5f18bf0cf0adf05d5b38b1ddacfcf22b4302..c9f2067a71904c1364244576f900862dddac29e2 100644 (file)
--- a/src/cli.c
+++ b/src/cli.c
@@ -777,6 +777,8 @@ static int cli_io_handler_show_fd(struct appctx *appctx)
                struct listener *li = NULL;
                struct server *sv = NULL;
                struct proxy *px = NULL;
+               struct mux_ops *mux = NULL;
+               void *ctx = NULL;
                uint32_t conn_flags = 0;
 
                fdt = fdtab[fd];
@@ -786,6 +788,8 @@ static int cli_io_handler_show_fd(struct appctx *appctx)
 
                if (fdt.iocb == conn_fd_handler) {
                        conn_flags = ((struct connection *)fdt.owner)->flags;
+                       mux = ((struct connection *)fdt.owner)->mux;
+                       ctx = ((struct connection *)fdt.owner)->mux_ctx;
                        li = objt_listener(((struct connection *)fdt.owner)->target);
                        sv = objt_server(((struct connection *)fdt.owner)->target);
                        px = objt_proxy(((struct connection *)fdt.owner)->target);
@@ -829,6 +833,11 @@ static int cli_io_handler_show_fd(struct appctx *appctx)
                                chunk_appendf(&trash, " sv=%s/%s", sv->id, sv->proxy->id);
                        else if (li)
                                chunk_appendf(&trash, " fe=%s", li->bind_conf->frontend->id);
+
+                       if (mux)
+                               chunk_appendf(&trash, " mux=%s mux_ctx=%p", mux->name, ctx);
+                       else
+                               chunk_appendf(&trash, " nomux");
                }
                else if (fdt.iocb == listener_accept) {
                        chunk_appendf(&trash, " l.st=%s fe=%s",