# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1495314015 0
# Node ID 7168f63fc3b89706688e8baf405ce268a1c8bf84
# Parent  a46a68500517bea7f6dcc8235eb2a5eb4aebad14
rvinterf: implemented keepalive mechanism

diff -r a46a68500517 -r 7168f63fc3b8 rvinterf/lowlevel/rvifmain.c
--- a/rvinterf/lowlevel/rvifmain.c	Sat May 20 20:04:35 2017 +0000
+++ b/rvinterf/lowlevel/rvifmain.c	Sat May 20 21:00:15 2017 +0000
@@ -36,6 +36,10 @@
 
 int wakeup_after_sec = 7;
 
+static char keepalive_msg[] =
+	"Received keepalive query, responding with keepalive answer";
+static u_char keepalive_answer[2] = {RVT_KEEPALIVE_HEADER, 'A'};
+
 main(argc, argv)
 	char **argv;
 {
@@ -203,6 +207,12 @@
 		if (client_head)
 			forward_nonrvt_pkt();
 		return;
+	case RVT_KEEPALIVE_HEADER:
+		if (rxpkt_len != 2 || rxpkt[1] != 'Q')
+			goto unknown;
+		output_line(keepalive_msg);
+		send_pkt_to_target(keepalive_answer, 2);
+		return;
 	case '*':
 		print_fc_lld_msg();
 		return;
diff -r a46a68500517 -r 7168f63fc3b8 rvinterf/lowlevel/rvtdump.c
--- a/rvinterf/lowlevel/rvtdump.c	Sat May 20 20:04:35 2017 +0000
+++ b/rvinterf/lowlevel/rvtdump.c	Sat May 20 21:00:15 2017 +0000
@@ -23,6 +23,9 @@
 int background;
 int no_output;	/* for output.c */
 
+static char keepalive_msg[] =
+	"Received keepalive query, unable to respond, please run rvinterf";
+
 main(argc, argv)
 	char **argv;
 {
@@ -128,6 +131,11 @@
 	case RVT_TCH_HEADER:
 		print_tch_output_raw();
 		return;
+	case RVT_KEEPALIVE_HEADER:
+		if (rxpkt_len != 2 || rxpkt[1] != 'Q')
+			goto unknown;
+		output_line(keepalive_msg);
+		return;
 	case '*':
 		print_fc_lld_msg();
 		return;