1 files changed, 11 insertions, 0 deletions
diff --git a/common/testnum.c b/common/testnum.c
new file mode 100644
index 0000000..0d6715b
--- /dev/null
+++ b/common/testnum.c
@@ -0,0 +1,11 @@
+#include <stdio.h>
+#include <netinet/in.h>
+
+void output_sa(struct sockaddr_in *sa)
+{
+    printf("sin_len is %d\n", sa->sin_len);
+    printf("sin_family is %d\n", sa->sin_family);
+    printf("sin_port is %d\n", sa->sin_port);
+    printf("sin_addr is %d\n", sa->sin_addr.s_addr);
+    printf("sizeof is %lu\n", sizeof(sa));
+}