int test1_messageArrived(void* context, char* topicName, int topicLen, MQTTAsync_message* message) { MQTTAsync c = (MQTTAsync)context; static int message_count = 0; int rc; MyLog(LOGA_DEBUG, "In messageArrived callback %p", c); if (++message_count == 1) { MQTTAsync_message pubmsg = MQTTAsync_message_initializer; MQTTAsync_responseOptions opts = MQTTAsync_responseOptions_initializer; pubmsg.payload = "a much longer message that we can shorten to the extent that we need to payload up to 11"; pubmsg.payloadlen = 11; pubmsg.qos = 2; pubmsg.retained = 0; rc = MQTTAsync_sendMessage(c, test_topic, &pubmsg, &opts); } else { MQTTAsync_responseOptions opts = MQTTAsync_responseOptions_initializer; opts.onSuccess = test1_onUnsubscribe; opts.context = c; rc = MQTTAsync_unsubscribe(c, test_topic, &opts); assert("Unsubscribe successful", rc == MQTTASYNC_SUCCESS, "rc was %d", rc); } MQTTAsync_freeMessage(&message); MQTTAsync_free(topicName); return 1; }
int test3_messageArrived(void* context, char* topicName, int topicLen, MQTTAsync_message* message) { client_data* cd = (client_data*)context; int rc; MyLog(LOGA_DEBUG, "In messageArrived callback \"%s\" message count ", cd->clientid); if (++cd->message_count == 1) { MQTTAsync_message pubmsg = MQTTAsync_message_initializer; MQTTAsync_responseOptions opts = MQTTAsync_responseOptions_initializer; pubmsg.payload = "a much longer message that we can shorten to the extent that we need to payload up to 11"; pubmsg.payloadlen = 25; pubmsg.qos = 1; pubmsg.retained = 0; rc = MQTTAsync_sendMessage(cd->c, cd->test_topic, &pubmsg, &opts); assert("Good rc from publish", rc == MQTTASYNC_SUCCESS, "rc was %d", rc); } else if (cd->message_count == 2) { MQTTAsync_message pubmsg = MQTTAsync_message_initializer; MQTTAsync_responseOptions opts = MQTTAsync_responseOptions_initializer; pubmsg.payload = "a QoS 0 message that we can shorten to the extent that we need to payload up to 11"; pubmsg.payloadlen = 29; pubmsg.qos = 0; pubmsg.retained = 0; opts.context = cd; opts.onSuccess = test3_onPublish; rc = MQTTAsync_sendMessage(cd->c, cd->test_topic, &pubmsg, &opts); assert("Good rc from publish", rc == MQTTASYNC_SUCCESS, "rc was %d", rc); } else { MQTTAsync_responseOptions opts = MQTTAsync_responseOptions_initializer; opts.onSuccess = test3_onUnsubscribe; opts.context = cd; rc = MQTTAsync_unsubscribe(cd->c, cd->test_topic, &opts); assert("Unsubscribe successful", rc == MQTTASYNC_SUCCESS, "rc was %d", rc); } MQTTAsync_freeMessage(&message); MQTTAsync_free(topicName); return 1; }
/** * @name Unsubscribe a topic * @brief Discontinues the subscription to a topic. * @param[in] topic has been previously subscribed to */ int unsubscribe(char *topic) { #if DEBUG printf("Invoked MQTT: unsubscribe()\n"); #endif MQTTAsync_responseOptions opts = MQTTAsync_responseOptions_initializer; opts.onSuccess = onUnSubscribe; opts.onFailure = onUnSubscribeFailure; opts.context = client; int rc = 0; if ((rc = MQTTAsync_unsubscribe(client, topic, &opts)) != MQTTASYNC_SUCCESS) { printf("Failed to unsubscribe, return code %d\n", rc); exit(-1); } return rc; }
int test4_messageArrived(void* context, char* topicName, int topicLen, MQTTAsync_message* message) { MQTTAsync c = (MQTTAsync)context; static int message_count = 0; int rc, i; MyLog(LOGA_DEBUG, "In messageArrived callback %p", c); assert("Message size correct", message->payloadlen == test4_payloadlen, "message size was %d", message->payloadlen); for (i = 0; i < options.size; ++i) { if (((char*)test4_payload)[i] != ((char*)message->payload)[i]) { assert("Message contents correct", ((char*)test4_payload)[i] != ((char*)message->payload)[i], "message content was %c", ((char*)message->payload)[i]); break; } } if (++message_count == 1) { MQTTAsync_message pubmsg = MQTTAsync_message_initializer; MQTTAsync_responseOptions opts = MQTTAsync_responseOptions_initializer; pubmsg.payload = test4_payload; pubmsg.payloadlen = test4_payloadlen; pubmsg.qos = 1; pubmsg.retained = 0; opts.onSuccess = test4_onPublish; opts.context = c; rc = MQTTAsync_sendMessage(c, test_topic, &pubmsg, &opts); } else if (message_count == 2) { MQTTAsync_message pubmsg = MQTTAsync_message_initializer; MQTTAsync_responseOptions opts = MQTTAsync_responseOptions_initializer; pubmsg.payload = test4_payload; pubmsg.payloadlen = test4_payloadlen; pubmsg.qos = 0; pubmsg.retained = 0; opts.onSuccess = test4_onPublish; opts.context = c; rc = MQTTAsync_sendMessage(c, test_topic, &pubmsg, &opts); } else { MQTTAsync_responseOptions opts = MQTTAsync_responseOptions_initializer; opts.onSuccess = test1_onUnsubscribe; opts.context = c; rc = MQTTAsync_unsubscribe(c, test_topic, &opts); assert("Unsubscribe successful", rc == MQTTASYNC_SUCCESS, "rc was %d", rc); } MQTTAsync_freeMessage(&message); MQTTAsync_free(topicName); return 1; }