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Dependencies: C12832 EthernetInterface MQTT mbed-rtos mbed
Fork of HelloMQTT by
Linux-example/linux-main.cpp@20:82721643145a, 2015-11-20 (annotated)
- Committer:
- weiarm2015
- Date:
- Fri Nov 20 05:47:25 2015 +0000
- Revision:
- 20:82721643145a
- Parent:
- 8:a3e3113054a1
v.0.01
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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icraggs | 3:7a6a899de7cc | 1 | /******************************************************************************* |
icraggs | 3:7a6a899de7cc | 2 | * Copyright (c) 2014 IBM Corp. |
icraggs | 3:7a6a899de7cc | 3 | * |
icraggs | 3:7a6a899de7cc | 4 | * All rights reserved. This program and the accompanying materials |
icraggs | 3:7a6a899de7cc | 5 | * are made available under the terms of the Eclipse Public License v1.0 |
icraggs | 3:7a6a899de7cc | 6 | * and Eclipse Distribution License v1.0 which accompany this distribution. |
icraggs | 3:7a6a899de7cc | 7 | * |
icraggs | 3:7a6a899de7cc | 8 | * The Eclipse Public License is available at |
icraggs | 3:7a6a899de7cc | 9 | * http://www.eclipse.org/legal/epl-v10.html |
icraggs | 3:7a6a899de7cc | 10 | * and the Eclipse Distribution License is available at |
icraggs | 3:7a6a899de7cc | 11 | * http://www.eclipse.org/org/documents/edl-v10.php. |
icraggs | 3:7a6a899de7cc | 12 | * |
icraggs | 3:7a6a899de7cc | 13 | * Contributors: |
icraggs | 3:7a6a899de7cc | 14 | * Ian Craggs - initial API and implementation and/or initial documentation |
icraggs | 3:7a6a899de7cc | 15 | *******************************************************************************/ |
icraggs | 3:7a6a899de7cc | 16 | |
icraggs | 3:7a6a899de7cc | 17 | /** |
icraggs | 3:7a6a899de7cc | 18 | This is a sample program to illustrate the use of the MQTT Client library |
icraggs | 3:7a6a899de7cc | 19 | on Linux. The Client class requires two classes which mediate |
icraggs | 3:7a6a899de7cc | 20 | access to system interfaces for networking and timing. As long as these two |
icraggs | 3:7a6a899de7cc | 21 | classes provide the required public programming interfaces, it does not matter |
icraggs | 3:7a6a899de7cc | 22 | what facilities they use underneath. In this program, they use the Linux |
icraggs | 3:7a6a899de7cc | 23 | system libraries. |
icraggs | 3:7a6a899de7cc | 24 | |
icraggs | 3:7a6a899de7cc | 25 | */ |
icraggs | 3:7a6a899de7cc | 26 | |
icraggs | 3:7a6a899de7cc | 27 | #if defined(LINUX) |
icraggs | 3:7a6a899de7cc | 28 | |
icraggs | 8:a3e3113054a1 | 29 | #include "LinuxMQTT.h" |
icraggs | 8:a3e3113054a1 | 30 | #include "LinuxIPStack.h" |
icraggs | 8:a3e3113054a1 | 31 | #include "MQTTClient.h" |
icraggs | 8:a3e3113054a1 | 32 | |
icraggs | 3:7a6a899de7cc | 33 | #include <sys/types.h> |
icraggs | 3:7a6a899de7cc | 34 | #include <sys/socket.h> |
icraggs | 3:7a6a899de7cc | 35 | #include <sys/param.h> |
icraggs | 3:7a6a899de7cc | 36 | #include <sys/time.h> |
icraggs | 3:7a6a899de7cc | 37 | #include <sys/select.h> |
icraggs | 3:7a6a899de7cc | 38 | #include <netinet/in.h> |
icraggs | 3:7a6a899de7cc | 39 | #include <netinet/tcp.h> |
icraggs | 3:7a6a899de7cc | 40 | #include <arpa/inet.h> |
icraggs | 3:7a6a899de7cc | 41 | #include <netdb.h> |
icraggs | 3:7a6a899de7cc | 42 | #include <stdio.h> |
icraggs | 3:7a6a899de7cc | 43 | #include <unistd.h> |
icraggs | 3:7a6a899de7cc | 44 | #include <errno.h> |
icraggs | 3:7a6a899de7cc | 45 | #include <fcntl.h> |
icraggs | 3:7a6a899de7cc | 46 | |
icraggs | 3:7a6a899de7cc | 47 | #include <stdlib.h> |
icraggs | 3:7a6a899de7cc | 48 | #include <string.h> |
icraggs | 3:7a6a899de7cc | 49 | #include <signal.h> |
icraggs | 3:7a6a899de7cc | 50 | |
icraggs | 3:7a6a899de7cc | 51 | #define DEFAULT_STACK_SIZE -1 |
icraggs | 3:7a6a899de7cc | 52 | |
icraggs | 3:7a6a899de7cc | 53 | |
icraggs | 3:7a6a899de7cc | 54 | int arrivedcount = 0; |
icraggs | 3:7a6a899de7cc | 55 | |
icraggs | 3:7a6a899de7cc | 56 | void messageArrived(MQTT::Message* message) |
icraggs | 3:7a6a899de7cc | 57 | { |
icraggs | 3:7a6a899de7cc | 58 | printf("Message %d arrived: qos %d, retained %d, dup %d, packetid %d\n", |
icraggs | 3:7a6a899de7cc | 59 | ++arrivedcount, message->qos, message->retained, message->dup, message->id); |
icraggs | 3:7a6a899de7cc | 60 | printf("Payload %.*s\n", message->payloadlen, (char*)message->payload); |
icraggs | 3:7a6a899de7cc | 61 | } |
icraggs | 3:7a6a899de7cc | 62 | |
icraggs | 3:7a6a899de7cc | 63 | |
icraggs | 3:7a6a899de7cc | 64 | int connect(MQTT::Client<IPStack, Countdown>::connectionLostInfo* info) |
icraggs | 3:7a6a899de7cc | 65 | { |
icraggs | 3:7a6a899de7cc | 66 | const char* hostname = "localhost"; //"m2m.eclipse.org"; |
icraggs | 3:7a6a899de7cc | 67 | int port = 1883; |
icraggs | 3:7a6a899de7cc | 68 | printf("Connecting to %s:%d\n", hostname, port); |
icraggs | 3:7a6a899de7cc | 69 | int rc = info->network->connect(hostname, port); |
icraggs | 3:7a6a899de7cc | 70 | if (rc != 0) |
icraggs | 3:7a6a899de7cc | 71 | printf("rc from TCP connect is %d\n", rc); |
icraggs | 3:7a6a899de7cc | 72 | |
icraggs | 3:7a6a899de7cc | 73 | MQTTPacket_connectData data = MQTTPacket_connectData_initializer; |
icraggs | 3:7a6a899de7cc | 74 | data.MQTTVersion = 3; |
icraggs | 3:7a6a899de7cc | 75 | data.clientID.cstring = (char*)"mbed-icraggs"; |
icraggs | 3:7a6a899de7cc | 76 | rc = info->client->connect(&data); |
icraggs | 3:7a6a899de7cc | 77 | if (rc != 0) |
icraggs | 3:7a6a899de7cc | 78 | printf("rc from MQTT connect is %d\n", rc); |
icraggs | 3:7a6a899de7cc | 79 | |
icraggs | 3:7a6a899de7cc | 80 | return rc; |
icraggs | 3:7a6a899de7cc | 81 | } |
icraggs | 3:7a6a899de7cc | 82 | |
icraggs | 3:7a6a899de7cc | 83 | |
icraggs | 3:7a6a899de7cc | 84 | int main(int argc, char* argv[]) |
icraggs | 3:7a6a899de7cc | 85 | { |
icraggs | 3:7a6a899de7cc | 86 | IPStack ipstack = IPStack(); |
icraggs | 3:7a6a899de7cc | 87 | float version = 0.3; |
icraggs | 3:7a6a899de7cc | 88 | const char* topic = "mbed-sample"; |
icraggs | 3:7a6a899de7cc | 89 | |
icraggs | 3:7a6a899de7cc | 90 | printf("Version is %f\n", version); |
icraggs | 3:7a6a899de7cc | 91 | |
icraggs | 3:7a6a899de7cc | 92 | MQTT::Client<IPStack, Countdown> client = MQTT::Client<IPStack, Countdown>(ipstack); |
icraggs | 3:7a6a899de7cc | 93 | |
icraggs | 3:7a6a899de7cc | 94 | client.setConnectionLostHandler(connect); |
icraggs | 3:7a6a899de7cc | 95 | |
icraggs | 3:7a6a899de7cc | 96 | MQTT::Client<IPStack, Countdown>::connectionLostInfo info = {&client, &ipstack}; |
icraggs | 3:7a6a899de7cc | 97 | int rc = connect(&info); |
icraggs | 3:7a6a899de7cc | 98 | |
icraggs | 3:7a6a899de7cc | 99 | rc = client.subscribe(topic, MQTT::QOS2, messageArrived); |
icraggs | 3:7a6a899de7cc | 100 | if (rc != 0) |
icraggs | 3:7a6a899de7cc | 101 | printf("rc from MQTT subscribe is %d\n", rc); |
icraggs | 3:7a6a899de7cc | 102 | |
icraggs | 3:7a6a899de7cc | 103 | MQTT::Message message; |
icraggs | 3:7a6a899de7cc | 104 | |
icraggs | 3:7a6a899de7cc | 105 | // QoS 0 |
icraggs | 3:7a6a899de7cc | 106 | char buf[100]; |
icraggs | 3:7a6a899de7cc | 107 | sprintf(buf, "Hello World! QoS 0 message from app version %f", version); |
icraggs | 3:7a6a899de7cc | 108 | message.qos = MQTT::QOS0; |
icraggs | 3:7a6a899de7cc | 109 | message.retained = false; |
icraggs | 3:7a6a899de7cc | 110 | message.dup = false; |
icraggs | 3:7a6a899de7cc | 111 | message.payload = (void*)buf; |
icraggs | 3:7a6a899de7cc | 112 | message.payloadlen = strlen(buf)+1; |
icraggs | 3:7a6a899de7cc | 113 | rc = client.publish(topic, &message); |
icraggs | 3:7a6a899de7cc | 114 | while (arrivedcount == 0) |
icraggs | 3:7a6a899de7cc | 115 | client.yield(100); |
icraggs | 3:7a6a899de7cc | 116 | |
icraggs | 3:7a6a899de7cc | 117 | // QoS 1 |
icraggs | 3:7a6a899de7cc | 118 | printf("Now QoS 1\n"); |
icraggs | 3:7a6a899de7cc | 119 | sprintf(buf, "Hello World! QoS 1 message from app version %f", version); |
icraggs | 3:7a6a899de7cc | 120 | message.qos = MQTT::QOS1; |
icraggs | 3:7a6a899de7cc | 121 | message.payloadlen = strlen(buf)+1; |
icraggs | 3:7a6a899de7cc | 122 | rc = client.publish(topic, &message); |
icraggs | 3:7a6a899de7cc | 123 | while (arrivedcount == 1) |
icraggs | 3:7a6a899de7cc | 124 | client.yield(100); |
icraggs | 3:7a6a899de7cc | 125 | |
icraggs | 3:7a6a899de7cc | 126 | // QoS 2 |
icraggs | 3:7a6a899de7cc | 127 | sprintf(buf, "Hello World! QoS 2 message from app version %f", version); |
icraggs | 3:7a6a899de7cc | 128 | message.qos = MQTT::QOS2; |
icraggs | 3:7a6a899de7cc | 129 | message.payloadlen = strlen(buf)+1; |
icraggs | 3:7a6a899de7cc | 130 | rc = client.publish(topic, &message); |
icraggs | 3:7a6a899de7cc | 131 | while (arrivedcount == 2) |
icraggs | 3:7a6a899de7cc | 132 | client.yield(100); |
icraggs | 3:7a6a899de7cc | 133 | |
icraggs | 3:7a6a899de7cc | 134 | rc = client.unsubscribe(topic); |
icraggs | 3:7a6a899de7cc | 135 | if (rc != 0) |
icraggs | 3:7a6a899de7cc | 136 | printf("rc from unsubscribe was %d\n", rc); |
icraggs | 3:7a6a899de7cc | 137 | |
icraggs | 3:7a6a899de7cc | 138 | rc = client.disconnect(); |
icraggs | 3:7a6a899de7cc | 139 | if (rc != 0) |
icraggs | 3:7a6a899de7cc | 140 | printf("rc from disconnect was %d\n", rc); |
icraggs | 3:7a6a899de7cc | 141 | |
icraggs | 3:7a6a899de7cc | 142 | ipstack.disconnect(); |
icraggs | 3:7a6a899de7cc | 143 | |
icraggs | 3:7a6a899de7cc | 144 | printf("Finishing with %d messages received\n", arrivedcount); |
icraggs | 3:7a6a899de7cc | 145 | |
icraggs | 3:7a6a899de7cc | 146 | return 0; |
icraggs | 3:7a6a899de7cc | 147 | } |
icraggs | 3:7a6a899de7cc | 148 | |
icraggs | 3:7a6a899de7cc | 149 | #endif |