From a3d7239895d7055df7a65fddeaffa570fcc3f5ec Mon Sep 17 00:00:00 2001
From: Ruakij <ruakij@ruekov.eu>
Date: Tue, 7 Dec 2021 14:42:37 +0100
Subject: [PATCH] Change shutdown to accept exitCode and kill-signal

---
 src/main.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/main.js b/src/main.js
index e41f35e..18f6fa1 100644
--- a/src/main.js
+++ b/src/main.js
@@ -117,15 +117,20 @@ if(errorMsg){
         loggerTcpdump.debug(`tcpdump exited code: ${code}`);
         if (code) {
             loggerTcpdump.fatal(`tcpdump exited with non-zero code: ${code}`);
-            exit(1);
+            if(!exitCode) exitCode = 1;     // When exitCode is 0, set to 1
         }
         logger.info("Shutdown");
-        exit(0);
+        exit(exitCode);
     });
 
     // Handle stop-signals for graceful shutdown
+    var exitCode = 0;
     function shutdownReq() {
         logger.info("Shutdown request received..");
+        shutdown();
+    }
+    function shutdown(code, signal = "SIGTERM"){
+        if(code) exitCode = code;
         logger.debug("Stopping subprocess tcpdump, then exiting myself..");
         proc.kill();    // Kill process (send SIGTERM), then upper event-handler will stop self
     }