90     int ret, len;  in main()  local
132     if ((ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy,  in main()
135         printf(" failed\n  ! mbedtls_ctr_drbg_seed returned %d\n", ret);  in main()
152     ret = mbedtls_x509_crt_parse(&srvcert, (const unsigned char *) mbedtls_test_srv_crt,  in main()
154     if (ret != 0) {  in main()
155         printf(" failed\n  !  mbedtls_x509_crt_parse returned %d\n\n", ret);  in main()
159     ret = mbedtls_x509_crt_parse(&srvcert, (const unsigned char *) mbedtls_test_cas_pem,  in main()
161     if (ret != 0) {  in main()
162         printf(" failed\n  !  mbedtls_x509_crt_parse returned %d\n\n", ret);  in main()
166     ret =  mbedtls_pk_parse_key(&pkey,  in main()
173     if (ret != 0) {  in main()
174         printf(" failed\n  !  mbedtls_pk_parse_key returned %d\n\n", ret);  in main()
186     if ((ret = mbedtls_net_bind(&listen_fd, BIND_IP, "4433", MBEDTLS_NET_PROTO_UDP)) != 0) {  in main()
187         printf(" failed\n  ! mbedtls_net_bind returned %d\n\n", ret);  in main()
199     if ((ret = mbedtls_ssl_config_defaults(&conf,  in main()
203         mbedtls_printf(" failed\n  ! mbedtls_ssl_config_defaults returned %d\n\n", ret);  in main()
218     if ((ret = mbedtls_ssl_conf_own_cert(&conf, &srvcert, &pkey)) != 0) {  in main()
219         printf(" failed\n  ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret);  in main()
223     if ((ret = mbedtls_ssl_cookie_setup(&cookie_ctx,  in main()
225         printf(" failed\n  ! mbedtls_ssl_cookie_setup returned %d\n\n", ret);  in main()
232     if ((ret = mbedtls_ssl_setup(&ssl, &conf)) != 0) {  in main()
233         printf(" failed\n  ! mbedtls_ssl_setup returned %d\n\n", ret);  in main()
244     if (ret != 0) {  in main()
246         mbedtls_strerror(ret, error_buf, 100);  in main()
247         printf("Last error was: %d - %s\n\n", ret, error_buf);  in main()
261     if ((ret = mbedtls_net_accept(&listen_fd, &client_fd,  in main()
263         printf(" failed\n  ! mbedtls_net_accept returned %d\n\n", ret);  in main()
268     if ((ret = mbedtls_ssl_set_client_transport_id(&ssl,  in main()
271                "mbedtls_ssl_set_client_transport_id() returned -0x%x\n\n", (unsigned int) -ret);  in main()
287         ret = mbedtls_ssl_handshake(&ssl);  in main()
288     } while (ret == MBEDTLS_ERR_SSL_WANT_READ ||  in main()
289              ret == MBEDTLS_ERR_SSL_WANT_WRITE);  in main()
291     if (ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED) {  in main()
293         ret = 0;  in main()
295     } else if (ret != 0) {  in main()
296         printf(" failed\n  ! mbedtls_ssl_handshake returned -0x%x\n\n", (unsigned int) -ret);  in main()
312         ret = mbedtls_ssl_read(&ssl, buf, len);  in main()
313     } while (ret == MBEDTLS_ERR_SSL_WANT_READ ||  in main()
314              ret == MBEDTLS_ERR_SSL_WANT_WRITE);  in main()
316     if (ret <= 0) {  in main()
317         switch (ret) {  in main()
324                 ret = 0;  in main()
328                 printf(" mbedtls_ssl_read returned -0x%x\n\n", (unsigned int) -ret);  in main()
333     len = ret;  in main()
343         ret = mbedtls_ssl_write(&ssl, buf, len);  in main()
344     } while (ret == MBEDTLS_ERR_SSL_WANT_READ ||  in main()
345              ret == MBEDTLS_ERR_SSL_WANT_WRITE);  in main()
347     if (ret < 0) {  in main()
348         printf(" failed\n  ! mbedtls_ssl_write returned %d\n\n", ret);  in main()
352     len = ret;  in main()
363         ret = mbedtls_ssl_close_notify(&ssl);  in main()
364     } while (ret == MBEDTLS_ERR_SSL_WANT_WRITE);  in main()
365     ret = 0;  in main()
377     if (ret != 0) {  in main()
379         mbedtls_strerror(ret, error_buf, 100);  in main()
380         printf("Last error was: %d - %s\n\n", ret, error_buf);  in main()
399     if (ret < 0) {  in main()
400         ret = 1;  in main()
403     mbedtls_exit(ret);  in main()