684   LWIP_ERROR("buffer length mismatch", fixed_hdr_len + length <= MQTT_VAR_HEADER_BUFFER_LEN,  in mqtt_message_received()
1109 …LWIP_ERROR("mqtt_publish: TCP disconnected", (client->conn_state != TCP_DISCONNECTED), return ERR_…  in mqtt_publish()
1112   LWIP_ERROR("mqtt_publish: topic length overflow", (topic_strlen <= (0xFFFF - 2)), return ERR_ARG);  in mqtt_publish()
1124   LWIP_ERROR("mqtt_publish: total length overflow", (total_len <= 0xFFFF), return ERR_ARG);  in mqtt_publish()
1186 …LWIP_ERROR("mqtt_sub_unsub: topic length overflow", (topic_strlen <= (0xFFFF - 2)), return ERR_ARG…  in mqtt_sub_unsub()
1190   LWIP_ERROR("mqtt_sub_unsub: total length overflow", (total_len <= 0xFFFF), return ERR_ARG);  in mqtt_sub_unsub()
1319 …LWIP_ERROR("mqtt_client_connect: client_info->will_topic length overflow", len <= 0xFF, return ERR…  in mqtt_client_connect()
1320 …LWIP_ERROR("mqtt_client_connect: client_info->will_topic length must be > 0", len > 0, return ERR_…  in mqtt_client_connect()
1323 …LWIP_ERROR("mqtt_client_connect: client_info->will_msg length overflow", len <= 0xFF, return ERR_V…  in mqtt_client_connect()
1326     LWIP_ERROR("mqtt_client_connect: remaining_length overflow", len <= 0xFFFF, return ERR_VAL);  in mqtt_client_connect()
1332 …LWIP_ERROR("mqtt_client_connect: client_info->client_user length overflow", len <= 0xFFFF, return …  in mqtt_client_connect()
1333 …LWIP_ERROR("mqtt_client_connect: client_info->client_user length must be > 0", len > 0, return ERR…  in mqtt_client_connect()
1336     LWIP_ERROR("mqtt_client_connect: remaining_length overflow", len <= 0xFFFF, return ERR_VAL);  in mqtt_client_connect()
1342 …LWIP_ERROR("mqtt_client_connect: client_info->client_pass length overflow", len <= 0xFFFF, return …  in mqtt_client_connect()
1343 …LWIP_ERROR("mqtt_client_connect: client_info->client_pass length must be > 0", len > 0, return ERR…  in mqtt_client_connect()
1346     LWIP_ERROR("mqtt_client_connect: remaining_length overflow", len <= 0xFFFF, return ERR_VAL);  in mqtt_client_connect()
1354 …LWIP_ERROR("mqtt_client_connect: client_info->client_id length overflow", len <= 0xFFFF, return ER…  in mqtt_client_connect()
1357   LWIP_ERROR("mqtt_client_connect: remaining_length overflow", len <= 0xFFFF, return ERR_VAL);  in mqtt_client_connect()