Diff: iothub_client_sample_amqp.c

Revision:

0:eb1c7bc1f4f1

Child:

4:24cbfabe1b9d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/iothub_client_sample_amqp.c	Tue Sep 15 22:44:58 2015 -0700
@@ -0,0 +1,148 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+#include <stdio.h>
+
+#include "iothub_client.h"
+#include "iothub_message.h"
+#include "threadapi.h"
+#include "crt_abstractions.h"
+#include "iothubtransportamqp.h"
+
+#ifdef MBED_BUILD_TIMESTAMP
+#include "certs.h"
+#endif // MBED_BUILD_TIMESTAMP
+
+static const char* connectionString = "[device connection string]";
+static int callbackCounter;
+
+DEFINE_ENUM_STRINGS(IOTHUB_CLIENT_CONFIRMATION_RESULT, IOTHUB_CLIENT_CONFIRMATION_RESULT_VALUES);
+
+typedef struct EVENT_INSTANCE_TAG
+{
+    IOTHUB_MESSAGE_HANDLE messageHandle;
+    int messageTrackingId;  // For tracking the messages within the user callback.
+} EVENT_INSTANCE;
+
+static IOTHUBMESSAGE_DISPOSITION_RESULT ReceiveNotificationCallback(IOTHUB_MESSAGE_HANDLE notificationMessage, void* userContextCallback)
+{
+    int* counter = (int*)userContextCallback;
+    const char* buffer;
+    size_t size;
+    if (IoTHubMessage_GetByteArray(notificationMessage, (const unsigned char**)&buffer, &size) == IOTHUB_MESSAGE_OK)
+    {
+        (void)printf("Received Notification [%d] with Data: <<<%.*s>>> & Size=%d\r\n", *counter, (int)size, buffer, (int)size);
+    }
+
+    // Retrieve properties from the message
+    MAP_HANDLE mapProperties = IoTHubMessage_Properties(notificationMessage);
+    if (mapProperties != NULL)
+    {
+        const char*const* keys;
+        const char*const* values;
+        size_t propertyCount = 0;
+        if (Map_GetInternals(mapProperties, &keys, &values, &propertyCount) == MAP_OK)
+        {
+            if (propertyCount > 0)
+            {
+                printf("Message Properties:\r\n");
+                for (size_t index = 0; index < propertyCount; index++)
+                {
+                    printf("\tKey: %s Value: %s\r\n", keys[index], values[index]);
+                }
+                printf("\r\n");
+            }
+        }
+    }
+
+    /* Some device specific action code goes here... */
+    (*counter)++;
+    return IOTHUBMESSAGE_ACCEPTED;
+}
+
+static void SendConfirmationCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
+{
+    EVENT_INSTANCE* eventInstance = (EVENT_INSTANCE*)userContextCallback;
+    (void)printf("Confirmation[%d] received for message tracking id = %d with result = %s\r\n", callbackCounter, eventInstance->messageTrackingId, ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result));
+    /* Some device specific action code goes here... */
+    callbackCounter++;
+    IoTHubMessage_Destroy(eventInstance->messageHandle);
+}
+
+static char msgText[1024];
+static char propText[1024];
+#define MESSAGE_COUNT 5
+
+void iothub_client_sample_amqp_run(void)
+{
+    IOTHUB_CLIENT_HANDLE iotHubClientHandle;
+
+    EVENT_INSTANCE messages[MESSAGE_COUNT];
+
+    callbackCounter = 0;
+    int receiveContext = 0;
+
+    (void)printf("Starting the IoTHub client sample AMQP...\r\n");
+
+    if ((iotHubClientHandle = IoTHubClient_CreateFromConnectionString(connectionString, IoTHubTransportAmqp_ProvideTransportInterface)) == NULL)
+    {
+        (void)printf("ERROR: iotHubClientHandle is NULL!\r\n");
+    }
+    else
+    {
+#ifdef MBED_BUILD_TIMESTAMP
+		// For mbed add the certificate information
+		if (IoTHubClient_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
+		{
+			printf("failure to set option \"TrustedCerts\"\r\n");
+		}
+#endif // MBED_BUILD_TIMESTAMP
+
+		/* Setting Notification call back, so we can receive Commands. */
+        if (IoTHubClient_SetNotificationCallback(iotHubClientHandle, ReceiveNotificationCallback, &receiveContext) != IOTHUB_CLIENT_OK)
+        {
+            (void)printf("ERROR: IoTHubClient_SetNotificationCallback..........FAILED!\r\n");
+        }
+        else
+        {
+            (void)printf("IoTHubClient_SetNotificationCallback...successful.\r\n");
+
+            /* Now that we are ready to receive commands, let's send some messages */
+            for (int i = 0; i < MESSAGE_COUNT; i++)
+            {
+                sprintf_s(msgText, sizeof(msgText), "Message_%d_From_IoTHubClient_Over_AMQP", i);
+                if ((messages[i].messageHandle = IoTHubMessage_CreateFromByteArray((const unsigned char*)msgText, strlen(msgText))) == NULL)
+                {
+                    (void)printf("ERROR: iotHubMessageHandle is NULL!\r\n");
+                }
+                else
+                {
+                    messages[i].messageTrackingId = i;
+                    
+                    MAP_HANDLE propMap = IoTHubMessage_Properties(messages[i].messageHandle);
+                    sprintf_s(propText, sizeof(propText), "PropMsg_%d", i);
+                    if (Map_AddOrUpdate(propMap, "PropName", propText) != MAP_OK)
+                    {
+                        (void)printf("ERROR: Map_AddOrUpdate Failed!\r\n");
+                    }
+
+                    if (IoTHubClient_SendEventAsync(iotHubClientHandle, messages[i].messageHandle, SendConfirmationCallback, &messages[i]) != IOTHUB_CLIENT_OK)
+                    {
+                        (void)printf("ERROR: IoTHubClient_SendEventAsync..........FAILED!\r\n");
+                    }
+                    else
+                    {
+                        (void)printf("IoTHubClient_SendEventAsync accepted data for transmission to IoT Hub.\r\n");
+                    }
+                    
+                }
+            }
+
+            /* Wait for Commands. */
+            (void)printf("Press any key to exit the application. \r\n");
+            (void)getchar();
+        }
+        
+        IoTHubClient_Destroy(iotHubClientHandle);
+    }
+}