From b1cb145475608277393da7ca84e987011923541c Mon Sep 17 00:00:00 2001
From: Tom Early <n7tae@tearly.net>
Date: Fri, 7 Sep 2018 18:27:40 -0700
Subject: [PATCH] kill timer

---
 QnetITAP.cpp | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/QnetITAP.cpp b/QnetITAP.cpp
index 8c77b1b..0ad044a 100644
--- a/QnetITAP.cpp
+++ b/QnetITAP.cpp
@@ -253,6 +253,7 @@ void CQnetITAP::Run(const char *cfgfile)
 	keep_running = true;
 	unsigned poll_counter = 0;
 	bool is_alive = false;
+	std::chrono::steady_clock::time_point lastdata = std::chrono::steady_clock::now();
 
 	while (keep_running) {
 		fd_set readfds;
@@ -273,17 +274,23 @@ void CQnetITAP::Run(const char *cfgfile)
 			break;
 		}
 
+		// check for a dead or disconnected radio
+		std::chrono::steady_clock::duration sincelastdata = std::chrono::steady_clock::now() - lastdata;
+		double deadtime = sincelastdata.count() * std::chrono::steady_clock::period::num / std::chrono::steady_clock::period::den;
+		if (10.0 < deadtime) {
+			print("no activity from radio for 10 sec. Exiting...\n");
+			break;
+		}
+
 		if (0 == ret) {
 			// nothing to read, so do the polling or pinging
-			unsigned char buf[3];
 			if (poll_counter++ < 18) {
 				unsigned char poll[3] = { 0xffu, 0xffu, 0xffu };
-				::memcpy(buf, poll, 3);
+				SendTo((unsigned char)0x03U, poll);
 			} else {
 				unsigned char ping[3] = { 0x02u, 0x02u, 0xffu };
-				::memcpy(buf, ping, 3);
+				SendTo((unsigned char)0x03U, ping);
 			}
-			SendTo((unsigned char)0x03U, buf);
 			continue;
 		}
 
@@ -318,6 +325,7 @@ void CQnetITAP::Run(const char *cfgfile)
 		}
 
 		if (rt != RT_NOTHING) {
+			lastdata = std::chrono::steady_clock::now();
 			//printf("read %d bytes from ITAP\n", (int)buf[0]);
 			if (RT_DATA==rt || RT_HEADER==rt) {
 				if (ProcessITAP(buf))
@@ -336,9 +344,6 @@ void CQnetITAP::Run(const char *cfgfile)
 							is_alive = true;
 						}
 						break;
-					case RT_TIMEOUT:
-						printf("DEBUG: Run: got a timeout.\n");
-						break;
 					default:
 						break;
 				}