example of tls_server never successful

[fmdra]

Something seems off in the tls_server example. It's working for me, but it seems that there is no possibility of it having a "success" the way it is written. In the following extract, the while exists when ret is different than 0 (when it actually wrote). Then the value of ret is check to be non-zero and then an error is printed. Would it be better to reset ret after it has written, right? This is the first time I'm playing with these libraries so I might be wrong.

while((ret = mbedtls_ssl_write(&ssl, buf, len)) <= 0)

        {

            if(ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE)

            {

                printf(" failed\n  ! mbedtls_ssl_write returned %d\n\n", ret);

                goto exit;

            }

        }




        len = ret;

        printf(" %d bytes written. Closing socket on client.\n\n%s", len, (char *) buf);




        mbedtls_ssl_close_notify(&ssl);




    exit:

        mbedtls_ssl_session_reset(&ssl);

        mbedtls_net_free(&client_ctx);

        mbedtls_net_free(&server_ctx);




        if(ret != 0)

        {

            char error_buf[100];

            mbedtls_strerror(ret, error_buf, 100);

            printf("\n\nLast error was: %d - %s\n\n", ret, error_buf);

            failures++;

        } else {

            successes++;

        }