commit ddc9e26b3b46e963d7819cc39c975dd02f5e4366
author Simon Butcher <simon.butcher@arm.com> Sat Oct 27 18:27:41 2018 +0100
committer Simon Butcher <simon.butcher@arm.com> Sat Oct 27 18:27:41 2018 +0100
tree 9ec9e9a9c3932a382163e342826a4daa785a1006
parent 78dd2e55bf4efc773dfa011cd0b4b7324fd33f85
parent 3efa8889b7fe6c4caeaae187ff9d667e95d54e95

Merge remote-tracking branch 'public/pr/1627' into development

ChangeLog

diff --git a/ChangeLog b/ChangeLog
index 0d74fde..e3f7af6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -26,6 +26,8 @@
    * Close a test gap in (D)TLS between the client side and the server side:
      test the handling of large packets and small packets on the client side
      in the same way as on the server side.
+   * Change the dtls_client and dtls_server samples to work by default over
+     IPv6 and optionally by a build option over IPv4.
 
 = mbed TLS 2.13.1 branch released 2018-09-06
 

programs/ssl/dtls_client.c

diff --git a/programs/ssl/dtls_client.c b/programs/ssl/dtls_client.c
index f271bad..c29ab34 100644
--- a/programs/ssl/dtls_client.c
+++ b/programs/ssl/dtls_client.c
@@ -60,9 +60,18 @@
 #include "mbedtls/certs.h"
 #include "mbedtls/timing.h"
 
+/* Uncomment out the following line to default to IPv4 and disable IPv6 */
+//#define FORCE_IPV4
+
 #define SERVER_PORT "4433"
 #define SERVER_NAME "localhost"
-#define SERVER_ADDR "127.0.0.1" /* forces IPv4 */
+
+#ifdef FORCE_IPV4
+#define SERVER_ADDR "127.0.0.1"     /* Forces IPv4 */
+#else
+#define SERVER_ADDR "::1"
+#endif
+
 #define MESSAGE     "Echo this"
 
 #define READ_TIMEOUT_MS 1000

programs/ssl/dtls_server.c

diff --git a/programs/ssl/dtls_server.c b/programs/ssl/dtls_server.c
index 9d0dda4..b4ad6b5 100644
--- a/programs/ssl/dtls_server.c
+++ b/programs/ssl/dtls_server.c
@@ -34,6 +34,15 @@
 #define mbedtls_time_t     time_t
 #endif
 
+/* Uncomment out the following line to default to IPv4 and disable IPv6 */
+//#define FORCE_IPV4
+
+#ifdef FORCE_IPV4
+#define BIND_IP     "0.0.0.0"     /* Forces IPv4 */
+#else
+#define BIND_IP     "::"
+#endif
+
 #if !defined(MBEDTLS_SSL_SRV_C) || !defined(MBEDTLS_SSL_PROTO_DTLS) ||    \
     !defined(MBEDTLS_SSL_COOKIE_C) || !defined(MBEDTLS_NET_C) ||          \
     !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_CTR_DRBG_C) ||        \
@@ -170,7 +179,7 @@
     printf( "  . Bind on udp/*/4433 ..." );
     fflush( stdout );
 
-    if( ( ret = mbedtls_net_bind( &listen_fd, NULL, "4433", MBEDTLS_NET_PROTO_UDP ) ) != 0 )
+    if( ( ret = mbedtls_net_bind( &listen_fd, BIND_IP, "4433", MBEDTLS_NET_PROTO_UDP ) ) != 0 )
     {
         printf( " failed\n  ! mbedtls_net_bind returned %d\n\n", ret );
         goto exit;