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-rw-r--r--Utilities/cmcurl/lib/mqtt.h61
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+#ifndef HEADER_CURL_MQTT_H
+#define HEADER_CURL_MQTT_H
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Björn Stenberg, <bjorn@haxx.se>
+ *
+ * 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.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#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 */