force termination (SIGINT, SIGTERM) after 1s

Author: NikolasK-source

src/main.cpp

@@ -21,6 +21,7 @@ static int socket = -1;
 static void sig_term_handler(int) {
     if (socket != -1) close(socket);
     terminate = true;
+    alarm(1);  // force termination after 1s
 }
 
 /*! \brief main function
@@ -44,6 +45,11 @@ int main(int argc, char **argv) {
         exit(EX_OSERR);
     }
 
+    if (signal(SIGALRM, [](int) { exit(EX_OK); })) {
+        perror("Failed to establish signal handler");
+        exit(EX_OSERR);
+    }
+
     // all command line arguments
     // clang-format off
     options.add_options()("i,ip",