From 107f3c384ca05b29baaf3498978dffe0d9d64873 Mon Sep 17 00:00:00 2001
From: Henrik Hautakoski <henrik@eossweden.org>
Date: Wed, 2 Feb 2022 15:14:56 +0100
Subject: [PATCH] main.go: call shClient.IsOpen() and exit early if closed in
 interrupt handler.

---
 main.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/main.go b/main.go
index a621565..2740508 100644
--- a/main.go
+++ b/main.go
@@ -62,6 +62,11 @@ func run() {
         case <-interrupt:
             log.Println("Interrupt, closing")
 
+            if shClient.IsOpen() == false {
+                log.Println("ship client not connected, exiting...")
+                return
+            }
+
             // Cleanly close the connection by sending a close message and then
             // waiting (with timeout) for the server to close the connection.
             shClient.SendCloseMessage()