| #ifndef HEADER_CURL_MQTT_H |
| #define HEADER_CURL_MQTT_H |
| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 2019 - 2020, Björn Stenberg, <[email protected]> |
| * |
| * This software is licensed as described in the file COPYING, which |
| * you should have received as part of this distribution. The terms |
| * are also available at https://curl.se/docs/copyright.html. |
| * |
| * You may opt to use, copy, modify, merge, publish, distribute and/or sell |
| * copies of the Software, and permit persons to whom the Software is |
| * furnished to do so, under the terms of the COPYING file. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ***************************************************************************/ |
| |
| #ifndef CURL_DISABLE_MQTT |
| extern const struct Curl_handler Curl_handler_mqtt; |
| #endif |
| |
| enum mqttstate { |
| MQTT_FIRST, /* 0 */ |
| MQTT_REMAINING_LENGTH, /* 1 */ |
| MQTT_CONNACK, /* 2 */ |
| MQTT_SUBACK, /* 3 */ |
| MQTT_SUBACK_COMING, /* 4 - the SUBACK remainder */ |
| MQTT_PUBWAIT, /* 5 - wait for publish */ |
| MQTT_PUB_REMAIN, /* 6 - wait for the remainder of the publish */ |
| |
| MQTT_NOSTATE /* 7 - never used an actual state */ |
| }; |
| |
| struct mqtt_conn { |
| enum mqttstate state; |
| enum mqttstate nextstate; /* switch to this after remaining length is |
| done */ |
| unsigned int packetid; |
| }; |
| |
| /* protocol-specific transfer-related data */ |
| struct MQTT { |
| char *sendleftovers; |
| size_t nsend; /* size of sendleftovers */ |
| |
| /* when receiving */ |
| size_t npacket; /* byte counter */ |
| unsigned char firstbyte; |
| size_t remaining_length; |
| }; |
| |
| #endif /* HEADER_CURL_MQTT_H */ |
