Exit program when invalid TTL option

Suggested by Jim, tcpping should exit when user input an invalid ttl. Signed-off-by: zhenwei pi <[email protected]>
jwyllie83 · Jan 6, 2020 · 5b7dc00 · 5b7dc00
1 parent ff278c0
commit 5b7dc00
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/tcpping.c b/tcpping.c
@@ -790,6 +790,7 @@ int main(int argc, char *argv[])
 				ttl = atoi(optarg);
 				if (ttl < 1 || ttl > 255) {
 					fprintf(stderr, "Invalid TTL\n");
+					exit(1);
 				}
 				break;
 			case 'v':