Merge pull request #16 from ARMmbed/tls_error_handling

Close and clear session when error received after connection is

Author: Tero Heinonen

source/coap_connection_handler.c

@@ -450,9 +450,7 @@ static void secure_recv_sckt_msg(void *cb_res)
                 len = coap_security_handler_read(session->sec_handler, data, sock->data_len);
                 if( len < 0 ){
                     ns_dyn_mem_free(data);
-                    if( len == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY ){
-                            secure_session_delete( session );
-                    }
+                    secure_session_delete( session );
                 }else{
                     if( sock->parent->_recv_cb ){
                         sock->parent->_recv_cb(sock->listen_socket, src_address.address, src_address.identifier, data, len);
@@ -552,13 +550,8 @@ int coap_connection_handler_virtual_recv(coap_conn_handler_t *handler, uint8_t a
                 len = coap_security_handler_read(session->sec_handler, data, sock->data_len);
                 if( len < 0 ){
                     ns_dyn_mem_free(data);
-                    if( len == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY ){
-//                        if( sock->parent->sec_conn_closed_cb ){
-//                            sock->parent->sec_conn_closed_cb(sock->listen_socket, address, port);
-                            secure_session_delete( session );
-                            return 0;
-//                        }
-                    }
+                    secure_session_delete( session );
+                    return 0;
                 }else{
                     if( sock->parent->_recv_cb ){
                         sock->parent->_recv_cb(sock->listen_socket, address, port, data, len);