76 		LOG_ERR("Error in poll (%d)", errno);  in wait_for_event()
98 		LOG_ERR("Failed to create TLS socket (%d)", errno);  in create_socket()
114 		LOG_ERR("Failed to set TLS_SEC_TAG_LIST option (%d)", errno);  in create_socket()
123 		LOG_ERR("Failed to set TLS_HOSTNAME option (%d)", errno);  in create_socket()
130 		LOG_ERR("Cannot connect to TCP remote (%d)", errno);  in create_socket()
158 		LOG_ERR("Failed to register certificate: %d", err);  in setup_credentials()
169 		LOG_ERR("Failed to register PSK: %d", err);  in setup_credentials()
176 		LOG_ERR("Failed to register PSK ID: %d", err);  in setup_credentials()
194 		LOG_ERR("Socket creation failed (%d)", ret);  in main()
215 			LOG_ERR("Error sending test string (%d)", errno);  in main()
225 			LOG_ERR("Server terminated unexpectedly");  in main()
229 			LOG_ERR("Error receiving data (%d)", errno);  in main()
233 			LOG_ERR("Sent %d bytes, but received %d", data_len, ret);  in main()
242 		LOG_ERR("Received data does not match with TEST_STRING");  in main()