HelloMQTT over TLS.
Fork of HelloMQTT by
HelloMQTT over TLS
This program is a fork of HelloMQTT. Added TLS capability by using TLSSocket library. Tested on K64F.
This sample program connects to iot.eclipse.org:8883
by default. Verifies server identification. Subscribes a certain topic. Then publishes three messages with different QoSs, i.e. QoS0
, QoS1
, and QoS2
.
Warning
Some brokers do not accept QoS2 and/or QoS1 message. For example, AWS IoT Message Broker doesn't accept QoS2. In such broker, this program doesn't work as is. Change QoS level.
Output from console
HelloMQTT: version is 0.70 Opening network interface... Network interface opened successfully. Connecting to host iot.eclipse.org:8883 ... Connection established. MQTT client is trying to connect the server ... Client connected. Client is trying to subscribe a topic "mbed-test". Client has subscribed a topic "mbed-test". Client publishes messages ... Publishing message QoS 0. QoS 0 message published. ! Message arrived: qos 0, retained 0, dup 0, packetid 6257 ! Payload Hello World! QoS 0 message from app version 0.700000 Publishing message QoS 1. QoS 1 message published. ! Message arrived: qos 1, retained 0, dup 0, packetid 1 ! Payload Hello World! QoS 1 message from app version 0.700000 Publishing message QoS 2. QoS 2 message published. ! Message arrived: qos 2, retained 0, dup 0, packetid 2 ! Payload Hello World! QoS 2 message from app version 0.700000 Version 0.70: finish 3 msgs
Known Issues
On K64F, when serial baud rate is changed from 9600 to 115200, program fails.
MQTTNetwork.h@24:e7cf8b02e012, 2018-04-16 (annotated)
- Committer:
- Osamu Koizumi
- Date:
- Mon Apr 16 18:55:41 2018 +0900
- Revision:
- 24:e7cf8b02e012
- Parent:
- 21:a68bd76740f9
- Child:
- 34:8f7a465c2192
Added TLS support.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Jan Jongboom |
20:49c9daf2b0ff | 1 | #ifndef _MQTTNETWORK_H_ |
Jan Jongboom |
20:49c9daf2b0ff | 2 | #define _MQTTNETWORK_H_ |
Jan Jongboom |
20:49c9daf2b0ff | 3 | |
Jan Jongboom |
20:49c9daf2b0ff | 4 | #include "NetworkInterface.h" |
Jan Jongboom |
20:49c9daf2b0ff | 5 | |
Osamu Koizumi |
24:e7cf8b02e012 | 6 | #undef USE_TLS |
Osamu Koizumi |
24:e7cf8b02e012 | 7 | #if defined(MBED_CONF_APP_USE_TLS) && (MBED_CONF_APP_USE_TLS == 1) |
Osamu Koizumi |
24:e7cf8b02e012 | 8 | #define USE_TLS |
Osamu Koizumi |
24:e7cf8b02e012 | 9 | #endif |
Osamu Koizumi |
24:e7cf8b02e012 | 10 | |
Osamu Koizumi |
24:e7cf8b02e012 | 11 | #ifdef USE_TLS |
Osamu Koizumi |
24:e7cf8b02e012 | 12 | #include "TLSSocket.h" |
Osamu Koizumi |
24:e7cf8b02e012 | 13 | #endif /* USE_TLS */ |
Osamu Koizumi |
24:e7cf8b02e012 | 14 | |
Jan Jongboom |
20:49c9daf2b0ff | 15 | class MQTTNetwork { |
Jan Jongboom |
20:49c9daf2b0ff | 16 | public: |
Jan Jongboom |
20:49c9daf2b0ff | 17 | MQTTNetwork(NetworkInterface* aNetwork) : network(aNetwork) { |
Osamu Koizumi |
24:e7cf8b02e012 | 18 | #ifdef USE_TLS |
Osamu Koizumi |
24:e7cf8b02e012 | 19 | socket = new TLSSocket(); |
Osamu Koizumi |
24:e7cf8b02e012 | 20 | #else |
Jan Jongboom |
20:49c9daf2b0ff | 21 | socket = new TCPSocket(); |
Osamu Koizumi |
24:e7cf8b02e012 | 22 | #endif /* USE_TLS */ |
Jan Jongboom |
20:49c9daf2b0ff | 23 | } |
Jan Jongboom |
20:49c9daf2b0ff | 24 | |
Jan Jongboom |
20:49c9daf2b0ff | 25 | ~MQTTNetwork() { |
Jan Jongboom |
20:49c9daf2b0ff | 26 | delete socket; |
Jan Jongboom |
20:49c9daf2b0ff | 27 | } |
Jan Jongboom |
20:49c9daf2b0ff | 28 | |
Jan Jongboom |
20:49c9daf2b0ff | 29 | int read(unsigned char* buffer, int len, int timeout) { |
Jan Jongboom |
20:49c9daf2b0ff | 30 | return socket->recv(buffer, len); |
Jan Jongboom |
20:49c9daf2b0ff | 31 | } |
Jan Jongboom |
20:49c9daf2b0ff | 32 | |
Jan Jongboom |
20:49c9daf2b0ff | 33 | int write(unsigned char* buffer, int len, int timeout) { |
Jan Jongboom |
20:49c9daf2b0ff | 34 | return socket->send(buffer, len); |
Jan Jongboom |
20:49c9daf2b0ff | 35 | } |
Jan Jongboom |
20:49c9daf2b0ff | 36 | |
Osamu Koizumi |
24:e7cf8b02e012 | 37 | int connect(const char* hostname, int port, const char *ssl_ca_pem = NULL) { |
Osamu Koizumi |
24:e7cf8b02e012 | 38 | nsapi_error_t ret = 0; |
Osamu Koizumi |
24:e7cf8b02e012 | 39 | if((ret = socket->open(network)) != 0) { |
Osamu Koizumi |
24:e7cf8b02e012 | 40 | return ret; |
Osamu Koizumi |
24:e7cf8b02e012 | 41 | } |
Osamu Koizumi |
24:e7cf8b02e012 | 42 | #ifdef USE_TLS |
Osamu Koizumi |
24:e7cf8b02e012 | 43 | socket->set_root_ca_pem(ssl_ca_pem); |
Osamu Koizumi |
24:e7cf8b02e012 | 44 | #endif /* USE_TLS */ |
Jan Jongboom |
20:49c9daf2b0ff | 45 | return socket->connect(hostname, port); |
Jan Jongboom |
20:49c9daf2b0ff | 46 | } |
Jan Jongboom |
20:49c9daf2b0ff | 47 | |
Jan Jongboom |
21:a68bd76740f9 | 48 | int disconnect() { |
Jan Jongboom |
21:a68bd76740f9 | 49 | return socket->close(); |
Jan Jongboom |
20:49c9daf2b0ff | 50 | } |
Jan Jongboom |
20:49c9daf2b0ff | 51 | |
Jan Jongboom |
20:49c9daf2b0ff | 52 | private: |
Jan Jongboom |
20:49c9daf2b0ff | 53 | NetworkInterface* network; |
Osamu Koizumi |
24:e7cf8b02e012 | 54 | #ifdef USE_TLS |
Osamu Koizumi |
24:e7cf8b02e012 | 55 | TLSSocket* socket; |
Osamu Koizumi |
24:e7cf8b02e012 | 56 | #else |
Jan Jongboom |
20:49c9daf2b0ff | 57 | TCPSocket* socket; |
Osamu Koizumi |
24:e7cf8b02e012 | 58 | #endif /* USE_TLS */ |
Jan Jongboom |
20:49c9daf2b0ff | 59 | }; |
Jan Jongboom |
20:49c9daf2b0ff | 60 | |
Jan Jongboom |
20:49c9daf2b0ff | 61 | #endif // _MQTTNETWORK_H_ |