Add a ciphersuite NODTLS flag
diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index 27abb3e..e1bfbc2 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -588,6 +588,12 @@
             ciphersuite_info->max_minor_ver < ssl->min_minor_ver )
             continue;
 
+#if defined(POLARSSL_SSL_PROTO_DTLS)
+        if( ssl->transport == SSL_TRANSPORT_DATAGRAM &&
+            ( ciphersuite_info->flags & POLARSSL_CIPHERSUITE_NODTLS ) )
+            continue;
+#endif
+
         SSL_DEBUG_MSG( 3, ( "client hello, add ciphersuite: %2d",
                        ciphersuites[i] ) );