From 4f6c943df5f1707e5cfcf73a89f62da61b5dd7d1 Mon Sep 17 00:00:00 2001
From: zolliker <markus.zolliker@psi.ch>
Date: Thu, 14 Nov 2024 09:09:34 +0100
Subject: [PATCH] proper error message when server port is already in use

---
 nserver.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/nserver.c b/nserver.c
index d40434f9..97be22c8 100644
--- a/nserver.c
+++ b/nserver.c
@@ -201,7 +201,10 @@ int InitServer(char *file, pServer * pServ)
     IFDeleteOptions(pSICSOptions);
     return 0;
   }
-  NetReadInstallANETPort(pReader, naccept, iPort);
+  if (NetReadInstallANETPort(pReader, naccept, iPort) < 0) {
+    printf("can not open server port %d - probably this SeaServer is already running\n", iPort);
+    exit(0);
+  }
 
   /* the device executor */
   openDevexecLog();