Xin Zhang
/
azure-iot-c-sdk-f767zi
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Diff: iothub_client/src/iothubtransporthttp.c
- Revision:
- 0:f7f1f0d76dd6
diff -r 000000000000 -r f7f1f0d76dd6 iothub_client/src/iothubtransporthttp.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/iothub_client/src/iothubtransporthttp.c Thu Aug 23 06:52:14 2018 +0000
@@ -0,0 +1,2516 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+#include <stdlib.h>
+#include "azure_c_shared_utility/gballoc.h"
+
+#include <time.h>
+#include "iothub_client_options.h"
+#include "iothub_client_version.h"
+#include "internal/iothub_client_private.h"
+#include "iothub_transport_ll.h"
+#include "iothubtransporthttp.h"
+#include "internal/iothubtransport.h"
+
+#include "azure_c_shared_utility/optimize_size.h"
+#include "azure_c_shared_utility/httpapiexsas.h"
+#include "azure_c_shared_utility/urlencode.h"
+#include "azure_c_shared_utility/xlogging.h"
+#include "azure_c_shared_utility/httpapiex.h"
+#include "azure_c_shared_utility/httpapiexsas.h"
+#include "azure_c_shared_utility/strings.h"
+#include "azure_c_shared_utility/base64.h"
+#include "azure_c_shared_utility/doublylinkedlist.h"
+#include "azure_c_shared_utility/vector.h"
+#include "azure_c_shared_utility/httpheaders.h"
+#include "azure_c_shared_utility/agenttime.h"
+
+#define IOTHUB_APP_PREFIX "iothub-app-"
+static const char* IOTHUB_MESSAGE_ID = "iothub-messageid";
+static const char* IOTHUB_CORRELATION_ID = "iothub-correlationid";
+static const char* IOTHUB_CONTENT_TYPE_D2C = "iothub-contenttype";
+static const char* IOTHUB_CONTENT_ENCODING_D2C = "iothub-contentencoding";
+static const char* IOTHUB_CONTENT_TYPE_C2D = "ContentType";
+static const char* IOTHUB_CONTENT_ENCODING_C2D = "ContentEncoding";
+
+#define CONTENT_TYPE "Content-Type"
+#define APPLICATION_OCTET_STREAM "application/octet-stream"
+#define APPLICATION_VND_MICROSOFT_IOTHUB_JSON "application/vnd.microsoft.iothub.json"
+
+/*DEFAULT_GETMINIMUMPOLLINGTIME is the minimum time in seconds allowed between 2 consecutive GET issues to the service (GET=fetch messages)*/
+/*the default is 25 minutes*/
+#define DEFAULT_GETMINIMUMPOLLINGTIME ((unsigned int)25*60)
+
+#define MAXIMUM_MESSAGE_SIZE (255*1024-1)
+#define MAXIMUM_PAYLOAD_OVERHEAD 384
+#define MAXIMUM_PROPERTY_OVERHEAD 16
+
+/*forward declaration*/
+static int appendMapToJSON(STRING_HANDLE existing, const char* const* keys, const char* const* values, size_t count);
+
+typedef struct HTTPTRANSPORT_HANDLE_DATA_TAG
+{
+ STRING_HANDLE hostName;
+ HTTPAPIEX_HANDLE httpApiExHandle;
+ bool doBatchedTransfers;
+ unsigned int getMinimumPollingTime;
+ VECTOR_HANDLE perDeviceList;
+}HTTPTRANSPORT_HANDLE_DATA;
+
+typedef struct HTTPTRANSPORT_PERDEVICE_DATA_TAG
+{
+ HTTPTRANSPORT_HANDLE_DATA* transportHandle;
+
+ STRING_HANDLE deviceId;
+ STRING_HANDLE deviceKey;
+ STRING_HANDLE deviceSasToken;
+ STRING_HANDLE eventHTTPrelativePath;
+ STRING_HANDLE messageHTTPrelativePath;
+ HTTP_HEADERS_HANDLE eventHTTPrequestHeaders;
+ HTTP_HEADERS_HANDLE messageHTTPrequestHeaders;
+ STRING_HANDLE abandonHTTPrelativePathBegin;
+ HTTPAPIEX_SAS_HANDLE sasObject;
+ bool DoWork_PullMessage;
+ time_t lastPollTime;
+ bool isFirstPoll;
+
+ IOTHUB_CLIENT_CORE_LL_HANDLE iotHubClientHandle;
+ PDLIST_ENTRY waitingToSend;
+ DLIST_ENTRY eventConfirmations; /*holds items for event confirmations*/
+} HTTPTRANSPORT_PERDEVICE_DATA;
+
+typedef struct MESSAGE_DISPOSITION_CONTEXT_TAG
+{
+ HTTPTRANSPORT_HANDLE_DATA* handleData;
+ HTTPTRANSPORT_PERDEVICE_DATA* deviceData;
+ char* etagValue;
+} MESSAGE_DISPOSITION_CONTEXT;
+
+DEFINE_ENUM_STRINGS(IOTHUBMESSAGE_DISPOSITION_RESULT, IOTHUBMESSAGE_DISPOSITION_RESULT_VALUES);
+
+static void destroy_eventHTTPrelativePath(HTTPTRANSPORT_PERDEVICE_DATA* handleData)
+{
+ STRING_delete(handleData->eventHTTPrelativePath);
+ handleData->eventHTTPrelativePath = NULL;
+}
+
+static bool create_eventHTTPrelativePath(HTTPTRANSPORT_PERDEVICE_DATA* handleData, const char * deviceId)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_017: [ IoTHubTransportHttp_Register shall create an immutable string (further called "event HTTP relative path") from the following pieces: "/devices/" + URL_ENCODED(deviceId) + "/messages/events" + APIVERSION. ]*/
+ bool result;
+ STRING_HANDLE urlEncodedDeviceId;
+ handleData->eventHTTPrelativePath = STRING_construct("/devices/");
+ if (handleData->eventHTTPrelativePath == NULL)
+ {
+ LogError("STRING_construct failed.");
+ result = false;
+ }
+ else
+ {
+ if (!(
+ ((urlEncodedDeviceId = URL_EncodeString(deviceId)) != NULL) &&
+ (STRING_concat_with_STRING(handleData->eventHTTPrelativePath, urlEncodedDeviceId) == 0) &&
+ (STRING_concat(handleData->eventHTTPrelativePath, EVENT_ENDPOINT API_VERSION) == 0)
+ ))
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_018: [ If creating the string fail for any reason then IoTHubTransportHttp_Register shall fail and return NULL. ]*/
+ destroy_eventHTTPrelativePath(handleData);
+ LogError("Creating HTTP event relative path failed.");
+ result = false;
+ }
+ else
+ {
+ result = true;
+ }
+ STRING_delete(urlEncodedDeviceId);
+ }
+ return result;
+}
+
+static void destroy_messageHTTPrelativePath(HTTPTRANSPORT_PERDEVICE_DATA* handleData)
+{
+ STRING_delete(handleData->messageHTTPrelativePath);
+ handleData->messageHTTPrelativePath = NULL;
+}
+
+static bool create_messageHTTPrelativePath(HTTPTRANSPORT_PERDEVICE_DATA* handleData, const char * deviceId)
+{
+ bool result;
+ handleData->messageHTTPrelativePath = STRING_construct("/devices/");
+ if (handleData->messageHTTPrelativePath == NULL)
+ {
+ LogError("STRING_construct failed.");
+ result = false;
+ }
+ else
+ {
+ STRING_HANDLE urlEncodedDeviceId;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_019: [ IoTHubTransportHttp_Register shall create an immutable string (further called "message HTTP relative path") from the following pieces: "/devices/" + URL_ENCODED(deviceId) + "/messages/devicebound" + APIVERSION. ]*/
+ if (!(
+ ((urlEncodedDeviceId = URL_EncodeString(deviceId)) != NULL) &&
+ (STRING_concat_with_STRING(handleData->messageHTTPrelativePath, urlEncodedDeviceId) == 0) &&
+ (STRING_concat(handleData->messageHTTPrelativePath, MESSAGE_ENDPOINT_HTTP API_VERSION) == 0)
+ ))
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_020: [ If creating the message HTTP relative path fails, then IoTHubTransportHttp_Register shall fail and return NULL. ]*/
+ LogError("Creating HTTP message relative path failed.");
+ result = false;
+ destroy_messageHTTPrelativePath(handleData);
+ }
+ else
+ {
+ result = true;
+ }
+ STRING_delete(urlEncodedDeviceId);
+ }
+
+ return result;
+}
+
+static void destroy_eventHTTPrequestHeaders(HTTPTRANSPORT_PERDEVICE_DATA* handleData)
+{
+ HTTPHeaders_Free(handleData->eventHTTPrequestHeaders);
+ handleData->eventHTTPrequestHeaders = NULL;
+}
+
+static HTTP_HEADERS_RESULT addUserAgentHeaderInfo(IOTHUB_CLIENT_CORE_LL_HANDLE hClient, HTTP_HEADERS_HANDLE eventHTTPrequestHeaders)
+{
+ void* product_info;
+ HTTP_HEADERS_RESULT result;
+ if ((IoTHubClientCore_LL_GetOption(hClient, OPTION_PRODUCT_INFO, &product_info) == IOTHUB_CLIENT_ERROR) || (product_info == NULL))
+ {
+ result = HTTPHeaders_AddHeaderNameValuePair(eventHTTPrequestHeaders, "User-Agent", CLIENT_DEVICE_TYPE_PREFIX CLIENT_DEVICE_BACKSLASH IOTHUB_SDK_VERSION);
+ }
+ else
+ {
+ result = HTTPHeaders_AddHeaderNameValuePair(eventHTTPrequestHeaders, "User-Agent", STRING_c_str((STRING_HANDLE)product_info));
+ }
+ return result;
+}
+
+static bool create_eventHTTPrequestHeaders(HTTPTRANSPORT_PERDEVICE_DATA* handleData, const char * deviceId, bool is_x509_used)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_021: [ IoTHubTransportHttp_Register shall create a set of HTTP headers (further called "event HTTP request headers") consisting of the following fixed field names and values: "iothub-to":"/devices/" + URL_ENCODED(deviceId) + "/messages/events"; "Authorization":""
+ "Accept":"application/json"
+ "Connection":"Keep-Alive" ]*/
+ bool result;
+ handleData->eventHTTPrequestHeaders = HTTPHeaders_Alloc();
+ if (handleData->eventHTTPrequestHeaders == NULL)
+ {
+ LogError("HTTPHeaders_Alloc failed.");
+ result = false;
+ }
+ else
+ {
+ STRING_HANDLE temp = STRING_construct("/devices/");
+ if (temp == NULL)
+ {
+ LogError("STRING_construct failed.");
+ result = false;
+ destroy_eventHTTPrequestHeaders(handleData);
+ }
+ else
+ {
+ STRING_HANDLE urlEncodedDeviceId;
+ if (!(
+ ((urlEncodedDeviceId = URL_EncodeString(deviceId)) != NULL) &&
+ (STRING_concat_with_STRING(temp, urlEncodedDeviceId) == 0) &&
+ (STRING_concat(temp, EVENT_ENDPOINT) == 0)
+ ))
+ {
+ LogError("deviceId construction failed.");
+ result = false;
+ destroy_eventHTTPrequestHeaders(handleData);
+ }
+ else
+ {
+ if (!(
+ (HTTPHeaders_AddHeaderNameValuePair(handleData->eventHTTPrequestHeaders, "iothub-to", STRING_c_str(temp)) == HTTP_HEADERS_OK) &&
+ (is_x509_used || (HTTPHeaders_AddHeaderNameValuePair(handleData->eventHTTPrequestHeaders, "Authorization", " ") == HTTP_HEADERS_OK)) &&
+ (HTTPHeaders_AddHeaderNameValuePair(handleData->eventHTTPrequestHeaders, "Accept", "application/json") == HTTP_HEADERS_OK) &&
+ (HTTPHeaders_AddHeaderNameValuePair(handleData->eventHTTPrequestHeaders, "Connection", "Keep-Alive") == HTTP_HEADERS_OK) &&
+ (addUserAgentHeaderInfo(handleData->iotHubClientHandle, handleData->eventHTTPrequestHeaders) == HTTP_HEADERS_OK)
+ ))
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_022: [ If creating the event HTTP request headers fails, then IoTHubTransportHttp_Register shall fail and return NULL.] */
+ LogError("adding header properties failed.");
+ result = false;
+ destroy_eventHTTPrequestHeaders(handleData);
+ }
+ else
+ {
+ result = true;
+ }
+ }
+ STRING_delete(urlEncodedDeviceId);
+ STRING_delete(temp);
+ }
+ }
+ return result;
+}
+
+static void destroy_messageHTTPrequestHeaders(HTTPTRANSPORT_PERDEVICE_DATA* handleData)
+{
+ HTTPHeaders_Free(handleData->messageHTTPrequestHeaders);
+ handleData->messageHTTPrequestHeaders = NULL;
+}
+
+static bool create_messageHTTPrequestHeaders(HTTPTRANSPORT_PERDEVICE_DATA* handleData, bool is_x509_used)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_132: [ IoTHubTransportHttp_Register shall create a set of HTTP headers (further called "message HTTP request headers") consisting of the following fixed field names and values:
+ "Authorization": "" ]*/
+ bool result;
+ handleData->messageHTTPrequestHeaders = HTTPHeaders_Alloc();
+ if (handleData->messageHTTPrequestHeaders == NULL)
+ {
+ LogError("HTTPHeaders_Alloc failed.");
+ result = false;
+ }
+ else
+ {
+ if (!(
+ (addUserAgentHeaderInfo(handleData->iotHubClientHandle, handleData->messageHTTPrequestHeaders) == HTTP_HEADERS_OK) &&
+ (is_x509_used || (HTTPHeaders_AddHeaderNameValuePair(handleData->messageHTTPrequestHeaders, "Authorization", " ") == HTTP_HEADERS_OK))
+ ))
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_023: [ If creating message HTTP request headers then IoTHubTransportHttp_Register shall fail and return NULL. ]*/
+ destroy_messageHTTPrequestHeaders(handleData);
+ LogError("adding header properties failed.");
+ result = false;
+ }
+ else
+ {
+ result = true;
+ }
+ }
+ return result;
+}
+
+static void destroy_abandonHTTPrelativePathBegin(HTTPTRANSPORT_PERDEVICE_DATA* handleData)
+{
+ STRING_delete(handleData->abandonHTTPrelativePathBegin);
+ handleData->abandonHTTPrelativePathBegin = NULL;
+}
+
+static bool create_abandonHTTPrelativePathBegin(HTTPTRANSPORT_PERDEVICE_DATA* handleData, const char * deviceId)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_024: [ IoTHubTransportHttp_Register shall create a STRING containing: "/devices/" + URL_ENCODED(device id) +"/messages/deviceBound/" called abandonHTTPrelativePathBegin. ]*/
+ bool result;
+ handleData->abandonHTTPrelativePathBegin = STRING_construct("/devices/");
+ if (handleData->abandonHTTPrelativePathBegin == NULL)
+ {
+ result = false;
+ }
+ else
+ {
+ STRING_HANDLE urlEncodedDeviceId;
+ if (!(
+ ((urlEncodedDeviceId = URL_EncodeString(deviceId)) != NULL) &&
+ (STRING_concat_with_STRING(handleData->abandonHTTPrelativePathBegin, urlEncodedDeviceId) == 0) &&
+ (STRING_concat(handleData->abandonHTTPrelativePathBegin, MESSAGE_ENDPOINT_HTTP_ETAG) == 0)
+ ))
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_025: [ If creating the abandonHTTPrelativePathBegin fails then IoTHubTransportHttp_Register shall fail and return NULL. ]*/
+ LogError("unable to create abandon path string.");
+ STRING_delete(handleData->abandonHTTPrelativePathBegin);
+ result = false;
+ }
+ else
+ {
+ result = true;
+ }
+ STRING_delete(urlEncodedDeviceId);
+ }
+ return result;
+}
+
+static void destroy_SASObject(HTTPTRANSPORT_PERDEVICE_DATA* handleData)
+{
+ HTTPAPIEX_SAS_Destroy(handleData->sasObject);
+ handleData->sasObject = NULL;
+}
+
+static bool create_deviceSASObject(HTTPTRANSPORT_PERDEVICE_DATA* handleData, STRING_HANDLE hostName, const char * deviceId, const char * deviceKey)
+{
+ STRING_HANDLE keyName;
+ bool result;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_026: [IoTHubTransportHttp_Create shall invoke URL_EncodeString with an argument of device id.]*/
+ keyName = URL_EncodeString(deviceId);
+ if (keyName == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_027: [If the encode fails then IoTHubTransportHttp_Create shall fail and return NULL.]*/
+ LogError("URL_EncodeString keyname failed");
+ result = false;
+ }
+ else
+ {
+ STRING_HANDLE uriResource;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_028: [IoTHubTransportHttp_Create shall invoke STRING_clone using the previously created hostname.]*/
+ uriResource = STRING_clone(hostName);
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_029: [If the clone fails then IoTHubTransportHttp_Create shall fail and return NULL.]*/
+ if (uriResource != NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_030: [IoTHubTransportHttp_Create shall invoke STRING_concat with arguments uriResource and the string "/devices/".]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_141: [If the concat fails then IoTHubTransportHttp_Create shall fail and return NULL.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_031: [IoTHubTransportHttp_Create shall invoke STRING_concat_with_STRING with arguments uriResource and keyName.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_032: [If the STRING_concat_with_STRING fails then IoTHubTransportHttp_Create shall fail and return NULL.]*/
+ if ((STRING_concat(uriResource, "/devices/") == 0) &&
+ (STRING_concat_with_STRING(uriResource, keyName) == 0))
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_033: [IoTHubTransportHttp_Create shall invoke STRING_construct with an argument of config->upperConfig->deviceKey.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_034: [If the STRING_construct fails then IoTHubTransportHttp_Create shall fail and return NULL.]*/
+ STRING_HANDLE key = STRING_construct(deviceKey);
+ if (key != NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_035: [The keyName is shortened to zero length, if that fails then IoTHubTransportHttp_Create shall fail and return NULL.]*/
+ if (STRING_empty(keyName) != 0)
+ {
+ LogError("Unable to form the device key name for the SAS");
+ result = false;
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_036: [IoTHubTransportHttp_Create shall invoke HTTPAPIEX_SAS_Create with arguments key, uriResource, and zero length keyName.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_037: [If the HTTPAPIEX_SAS_Create fails then IoTHubTransportHttp_Create shall fail and return NULL.]*/
+ handleData->sasObject = HTTPAPIEX_SAS_Create(key, uriResource, keyName);
+ result = (handleData->sasObject != NULL) ? (true) : (false);
+ }
+ STRING_delete(key);
+ }
+ else
+ {
+ LogError("STRING_construct Key failed");
+ result = false;
+ }
+ }
+ else
+ {
+ LogError("STRING_concat uri resource failed");
+ result = false;
+ }
+ STRING_delete(uriResource);
+ }
+ else
+ {
+ LogError("STRING_staticclone uri resource failed");
+ result = false;
+ }
+ STRING_delete(keyName);
+ }
+ return result;
+}
+
+static void destroy_deviceId(HTTPTRANSPORT_PERDEVICE_DATA* handleData)
+{
+ STRING_delete(handleData->deviceId);
+ handleData->deviceId = NULL;
+}
+
+static bool create_deviceId(HTTPTRANSPORT_PERDEVICE_DATA* handleData, const char * deviceId)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_133: [ IoTHubTransportHttp_Register shall create an immutable string (further called "deviceId") from config->deviceConfig->deviceId. ]*/
+ bool result;
+ handleData->deviceId = STRING_construct(deviceId);
+ if (handleData->deviceId == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_134: [ If deviceId is not created, then IoTHubTransportHttp_Register shall fail and return NULL. */
+ LogError("STRING_construct deviceId failed");
+ result = false;
+ }
+ else
+ {
+ result = true;
+ }
+ return result;
+}
+
+static void destroy_deviceKey(HTTPTRANSPORT_PERDEVICE_DATA* handleData)
+{
+ STRING_delete(handleData->deviceKey);
+ handleData->deviceKey = NULL;
+}
+
+static void destroy_deviceSas(HTTPTRANSPORT_PERDEVICE_DATA* handleData)
+{
+ STRING_delete(handleData->deviceSasToken);
+ handleData->deviceSasToken = NULL;
+}
+
+static bool create_deviceKey(HTTPTRANSPORT_PERDEVICE_DATA* handleData, const char * deviceKey)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_135: [ IoTHubTransportHttp_Register shall create an immutable string (further called "deviceKey") from deviceKey. ]*/
+ bool result;
+ handleData->deviceKey = STRING_construct(deviceKey);
+ if (handleData->deviceKey == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_136: [ If deviceKey is not created, then IoTHubTransportHttp_Register shall fail and return NULL. ]*/
+ LogError("STRING_construct deviceKey failed");
+ result = false;
+ }
+ else
+ {
+ result = true;
+ }
+ return result;
+}
+
+static void destroy_deviceSasToken(HTTPTRANSPORT_PERDEVICE_DATA* handleData)
+{
+ STRING_delete(handleData->deviceSasToken);
+ handleData->deviceSasToken = NULL;
+}
+
+static bool create_deviceSasToken(HTTPTRANSPORT_PERDEVICE_DATA* handleData, const char * deviceSasToken)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_03_135: [ IoTHubTransportHttp_Register shall create an immutable string (further called "deviceSasToken") from deviceSasToken. ]*/
+ bool result;
+ handleData->deviceSasToken = STRING_construct(deviceSasToken);
+ if (handleData->deviceSasToken == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_03_136: [ If deviceSasToken is not created, then IoTHubTransportHttp_Register shall fail and return NULL. ]*/
+ LogError("STRING_construct deviceSasToken failed");
+ result = false;
+ }
+ else
+ {
+ result = true;
+ }
+ return result;
+}
+
+/*
+* List queries Find by handle and find by device name
+*/
+
+/*Codes_SRS_TRANSPORTMULTITHTTP_17_137: [ IoTHubTransportHttp_Register shall search the devices list for any device matching name deviceId. If deviceId is found it shall return NULL. ]*/
+static bool findDeviceHandle(const void* element, const void* value)
+{
+ bool result;
+ /* data stored at element is device handle */
+ const IOTHUB_DEVICE_HANDLE * guess = (const IOTHUB_DEVICE_HANDLE *)element;
+ IOTHUB_DEVICE_HANDLE match = (IOTHUB_DEVICE_HANDLE)value;
+ result = (*guess == match) ? true : false;
+ return result;
+}
+
+static bool findDeviceById(const void* element, const void* value)
+{
+ bool result;
+ const char* deviceId = (const char *)value;
+ const HTTPTRANSPORT_PERDEVICE_DATA * perDeviceElement = *(const HTTPTRANSPORT_PERDEVICE_DATA **)element;
+
+ result = (strcmp(STRING_c_str(perDeviceElement->deviceId), deviceId) == 0);
+
+ return result;
+}
+
+static IOTHUB_DEVICE_HANDLE IoTHubTransportHttp_Register(TRANSPORT_LL_HANDLE handle, const IOTHUB_DEVICE_CONFIG* device, IOTHUB_CLIENT_CORE_LL_HANDLE iotHubClientHandle, PDLIST_ENTRY waitingToSend)
+{
+ HTTPTRANSPORT_PERDEVICE_DATA* result;
+ if (handle == NULL || device == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_142: [ If handle is NULL or device is NULL, then IoTHubTransportHttp_Register shall return NULL. ]*/
+ LogError("Transport handle is NULL");
+ result = NULL;
+ }
+ else if (device->deviceId == NULL || ((device->deviceKey != NULL) && (device->deviceSasToken != NULL)) || waitingToSend == NULL || iotHubClientHandle == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_015: [ If IOTHUB_DEVICE_CONFIG fields deviceKey and deviceSasToken are NULL, then IoTHubTransportHttp_Register shall assume a x509 authentication. ]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_014: [ If IOTHUB_DEVICE_CONFIG field deviceId is NULL, then IoTHubTransportHttp_Register shall return NULL. ]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_016: [ If parameter waitingToSend is NULL, then IoTHubTransportHttp_Register shall return NULL. ]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_143: [ If parameter iotHubClientHandle is NULL, then IoTHubTransportHttp_Register shall return NULL. ]*/
+ LogError("invalid parameters detected TRANSPORT_LL_HANDLE handle=%p, const IOTHUB_DEVICE_CONFIG* device=%p, IOTHUB_CLIENT_CORE_LL_HANDLE iotHubClientHandle=%p, PDLIST_ENTRY waitingToSend=%p",
+ handle, device, iotHubClientHandle, waitingToSend);
+ result = NULL;
+ }
+ else
+ {
+ HTTPTRANSPORT_HANDLE_DATA* handleData = (HTTPTRANSPORT_HANDLE_DATA*)handle;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_137: [ IoTHubTransportHttp_Register shall search the devices list for any device matching name deviceId. If deviceId is found it shall return NULL. ]*/
+ void* listItem = VECTOR_find_if(handleData->perDeviceList, findDeviceById, device->deviceId);
+ if (listItem != NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_137: [ IoTHubTransportHttp_Register shall search the devices list for any device matching name deviceId. If deviceId is found it shall return NULL. ]*/
+ LogError("Transport already has device registered by id: [%s]", device->deviceId);
+ result = NULL;
+ }
+ else
+ {
+ bool was_create_deviceKey_ok = false;
+ bool was_create_deviceSasToken_ok = false;
+ bool was_sasObject_ok = false;
+ bool was_x509_ok = false; /*there's nothing "created" in the case of x509, it is a flag indicating that x509 is used*/
+
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_038: [ Otherwise, IoTHubTransportHttp_Register shall allocate the IOTHUB_DEVICE_HANDLE structure. ]*/
+ bool was_resultCreated_ok = ((result = (HTTPTRANSPORT_PERDEVICE_DATA *)malloc(sizeof(HTTPTRANSPORT_PERDEVICE_DATA))) != NULL);
+ bool was_create_deviceId_ok = was_resultCreated_ok && create_deviceId(result, device->deviceId);
+
+ if (was_create_deviceId_ok)
+ {
+ if (device->deviceSasToken != NULL)
+ {
+ /*device->deviceKey is certainly NULL (because of the validation condition (else if (device->deviceId == NULL || ((device->deviceKey != NULL) && (device->deviceSasToken != NULL)) || waitingToSend == NULL || iotHubClientHandle == NULL))that does not accept that both satoken AND devicekey are non-NULL*/
+ was_create_deviceSasToken_ok = create_deviceSasToken(result, device->deviceSasToken);
+ result->deviceKey = NULL;
+ result->sasObject = NULL;
+ }
+ else /*when deviceSasToken == NULL*/
+ {
+ if (device->deviceKey != NULL)
+ {
+ was_create_deviceKey_ok = create_deviceKey(result, device->deviceKey);
+ result->deviceSasToken = NULL;
+ }
+ else
+ {
+ /*when both of them are NULL*/
+ was_x509_ok = true;
+ result->deviceKey = NULL;
+ result->deviceSasToken = NULL;
+ }
+ }
+ }
+
+ bool was_eventHTTPrelativePath_ok = (was_create_deviceKey_ok || was_create_deviceSasToken_ok || was_x509_ok) && create_eventHTTPrelativePath(result, device->deviceId);
+ bool was_messageHTTPrelativePath_ok = was_eventHTTPrelativePath_ok && create_messageHTTPrelativePath(result, device->deviceId);
+ bool was_eventHTTPrequestHeaders_ok;
+ if (was_messageHTTPrelativePath_ok)
+ {
+ result->iotHubClientHandle = iotHubClientHandle;
+ was_eventHTTPrequestHeaders_ok = create_eventHTTPrequestHeaders(result, device->deviceId, was_x509_ok);
+ }
+ else
+ {
+ was_eventHTTPrequestHeaders_ok = false;
+ }
+ bool was_messageHTTPrequestHeaders_ok = was_eventHTTPrequestHeaders_ok && create_messageHTTPrequestHeaders(result, was_x509_ok);
+ bool was_abandonHTTPrelativePathBegin_ok = was_messageHTTPrequestHeaders_ok && create_abandonHTTPrelativePathBegin(result, device->deviceId);
+
+ if (was_x509_ok)
+ {
+ result->sasObject = NULL; /**/
+ was_sasObject_ok = true;
+ }
+ else
+ {
+ if (!was_create_deviceSasToken_ok)
+ {
+ was_sasObject_ok = was_abandonHTTPrelativePathBegin_ok && create_deviceSASObject(result, handleData->hostName, device->deviceId, device->deviceKey);
+ }
+ }
+
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_041: [ IoTHubTransportHttp_Register shall call VECTOR_push_back to store the new device information. ]*/
+ bool was_list_add_ok = (was_sasObject_ok || was_create_deviceSasToken_ok || was_x509_ok) && (VECTOR_push_back(handleData->perDeviceList, &result, 1) == 0);
+
+ if (was_list_add_ok)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_043: [ Upon success, IoTHubTransportHttp_Register shall store the transport handle, iotHubClientHandle, and the waitingToSend queue in the device handle return a non-NULL value. ]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_040: [ IoTHubTransportHttp_Register shall put event HTTP relative path, message HTTP relative path, event HTTP request headers, message HTTP request headers, abandonHTTPrelativePathBegin, HTTPAPIEX_SAS_HANDLE, and the device handle into a device structure. ]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_128: [ IoTHubTransportHttp_Register shall mark this device as unsubscribed. ]*/
+ result->DoWork_PullMessage = false;
+ result->isFirstPoll = true;
+ result->waitingToSend = waitingToSend;
+ DList_InitializeListHead(&(result->eventConfirmations));
+ result->transportHandle = (HTTPTRANSPORT_HANDLE_DATA *)handle;
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_042: [ If the singlylinkedlist_add fails then IoTHubTransportHttp_Register shall fail and return NULL. ]*/
+ if (was_sasObject_ok) destroy_SASObject(result);
+ if (was_abandonHTTPrelativePathBegin_ok) destroy_abandonHTTPrelativePathBegin(result);
+ if (was_messageHTTPrelativePath_ok) destroy_messageHTTPrelativePath(result);
+ if (was_eventHTTPrequestHeaders_ok) destroy_eventHTTPrequestHeaders(result);
+ if (was_messageHTTPrequestHeaders_ok) destroy_messageHTTPrequestHeaders(result);
+ if (was_eventHTTPrelativePath_ok) destroy_eventHTTPrelativePath(result);
+ if (was_create_deviceId_ok) destroy_deviceId(result);
+ if (was_create_deviceKey_ok) destroy_deviceKey(result);
+ if (was_create_deviceSasToken_ok) destroy_deviceSasToken(result);
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_039: [ If the allocating the device handle fails then IoTHubTransportHttp_Register shall fail and return NULL. ] */
+ if (was_resultCreated_ok) free(result);
+ result = NULL;
+ }
+ }
+
+ }
+ return (IOTHUB_DEVICE_HANDLE)result;
+}
+
+
+static void destroy_perDeviceData(HTTPTRANSPORT_PERDEVICE_DATA * perDeviceItem)
+{
+ destroy_deviceId(perDeviceItem);
+ destroy_deviceKey(perDeviceItem);
+ destroy_deviceSas(perDeviceItem);
+ destroy_eventHTTPrelativePath(perDeviceItem);
+ destroy_messageHTTPrelativePath(perDeviceItem);
+ destroy_eventHTTPrequestHeaders(perDeviceItem);
+ destroy_messageHTTPrequestHeaders(perDeviceItem);
+ destroy_abandonHTTPrelativePathBegin(perDeviceItem);
+ destroy_SASObject(perDeviceItem);
+}
+
+static IOTHUB_DEVICE_HANDLE* get_perDeviceDataItem(IOTHUB_DEVICE_HANDLE deviceHandle)
+{
+ HTTPTRANSPORT_PERDEVICE_DATA* deviceHandleData = (HTTPTRANSPORT_PERDEVICE_DATA*)deviceHandle;
+ IOTHUB_DEVICE_HANDLE* listItem;
+
+ HTTPTRANSPORT_HANDLE_DATA* handleData = deviceHandleData->transportHandle;
+
+ listItem = (IOTHUB_DEVICE_HANDLE *)VECTOR_find_if(handleData->perDeviceList, findDeviceHandle, deviceHandle);
+ if (listItem == NULL)
+ {
+ LogError("device handle not found in transport device list");
+ listItem = NULL;
+ }
+ else
+ {
+ /* sucessfully found device in list. */
+ }
+
+ return listItem;
+}
+
+static void IoTHubTransportHttp_Unregister(IOTHUB_DEVICE_HANDLE deviceHandle)
+{
+ if (deviceHandle == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_044: [ If deviceHandle is NULL, then IoTHubTransportHttp_Unregister shall do nothing. ]*/
+ LogError("Unregister a NULL device handle");
+ }
+ else
+ {
+ HTTPTRANSPORT_PERDEVICE_DATA* deviceHandleData = (HTTPTRANSPORT_PERDEVICE_DATA*)deviceHandle;
+ HTTPTRANSPORT_HANDLE_DATA* handleData = deviceHandleData->transportHandle;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_045: [ IoTHubTransportHttp_Unregister shall locate deviceHandle in the transport device list by calling list_find_if. ]*/
+ IOTHUB_DEVICE_HANDLE* listItem = get_perDeviceDataItem(deviceHandle);
+ if (listItem == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_046: [ If the device structure is not found, then this function shall fail and do nothing. ]*/
+ LogError("Device Handle [%p] not found in transport", deviceHandle);
+ }
+ else
+ {
+ HTTPTRANSPORT_PERDEVICE_DATA * perDeviceItem = (HTTPTRANSPORT_PERDEVICE_DATA *)(*listItem);
+
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_047: [ IoTHubTransportHttp_Unregister shall free all the resources used in the device structure. ]*/
+ destroy_perDeviceData(perDeviceItem);
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_048: [ IoTHubTransportHttp_Unregister shall call singlylinkedlist_remove to remove device from devices list. ]*/
+ VECTOR_erase(handleData->perDeviceList, listItem, 1);
+ free(deviceHandleData);
+ }
+ }
+
+ return;
+}
+
+/*Codes_SRS_TRANSPORTMULTITHTTP_17_005: [If config->upperConfig->protocolGatewayHostName is NULL, `IoTHubTransportHttp_Create` shall create an immutable string (further called hostname) containing `config->transportConfig->iotHubName + config->transportConfig->iotHubSuffix`.] */
+/*Codes_SRS_TRANSPORTMULTITHTTP_20_001: [If config->upperConfig->protocolGatewayHostName is not NULL, IoTHubTransportHttp_Create shall use it as hostname] */
+static void destroy_hostName(HTTPTRANSPORT_HANDLE_DATA* handleData)
+{
+ STRING_delete(handleData->hostName);
+ handleData->hostName = NULL;
+}
+
+static bool create_hostName(HTTPTRANSPORT_HANDLE_DATA* handleData, const IOTHUBTRANSPORT_CONFIG* config)
+{
+ bool result;
+ if (config->upperConfig->protocolGatewayHostName != NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_20_001: [If config->upperConfig->protocolGatewayHostName is not NULL, IoTHubTransportHttp_Create shall use it as hostname] */
+ handleData->hostName = STRING_construct(config->upperConfig->protocolGatewayHostName);
+ result = (handleData->hostName != NULL);
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_005: [If config->upperConfig->protocolGatewayHostName is NULL, `IoTHubTransportHttp_Create` shall create an immutable string (further called hostname) containing `config->transportConfig->iotHubName + config->transportConfig->iotHubSuffix`.] */
+ handleData->hostName = STRING_construct(config->upperConfig->iotHubName);
+
+ if (handleData->hostName == NULL)
+ {
+ result = false;
+ }
+ else
+ {
+ if ((STRING_concat(handleData->hostName, ".") != 0) ||
+ (STRING_concat(handleData->hostName, config->upperConfig->iotHubSuffix) != 0))
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_006: [ If creating the hostname fails then IoTHubTransportHttp_Create shall fail and return NULL. ] */
+ destroy_hostName(handleData);
+ result = false;
+ }
+ else
+ {
+ result = true;
+ }
+ }
+ }
+ return result;
+}
+
+/*Codes_SRS_TRANSPORTMULTITHTTP_17_007: [Otherwise, IoTHubTransportHttp_Create shall create a HTTPAPIEX_HANDLE by a call to HTTPAPIEX_Create passing for hostName the hostname so far constructed by IoTHubTransportHttp_Create.]*/
+static void destroy_httpApiExHandle(HTTPTRANSPORT_HANDLE_DATA* handleData)
+{
+ HTTPAPIEX_Destroy(handleData->httpApiExHandle);
+ handleData->httpApiExHandle = NULL;
+}
+
+/*Codes_SRS_TRANSPORTMULTITHTTP_17_007: [ IoTHubTransportHttp_Create shall create a HTTPAPIEX_HANDLE by a call to HTTPAPIEX_Create passing for hostName the hostname so far constructed by IoTHubTransportHttp_Create. ]*/
+static bool create_httpApiExHandle(HTTPTRANSPORT_HANDLE_DATA* handleData, const IOTHUBTRANSPORT_CONFIG* config)
+{
+ bool result;
+ (void)config;
+ handleData->httpApiExHandle = HTTPAPIEX_Create(STRING_c_str(handleData->hostName));
+ if (handleData->httpApiExHandle == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_008: [ If creating the HTTPAPIEX_HANDLE fails then IoTHubTransportHttp_Create shall fail and return NULL. ] */
+ result = false;
+ }
+ else
+ {
+ result = true;
+ }
+ return result;
+}
+
+static void destroy_perDeviceList(HTTPTRANSPORT_HANDLE_DATA* handleData)
+{
+ VECTOR_destroy(handleData->perDeviceList);
+ handleData->perDeviceList = NULL;
+}
+
+/*Codes_SRS_TRANSPORTMULTITHTTP_17_009: [ IoTHubTransportHttp_Create shall call singlylinkedlist_create to create a list of registered devices. ]*/
+static bool create_perDeviceList(HTTPTRANSPORT_HANDLE_DATA* handleData)
+{
+ bool result;
+ handleData->perDeviceList = VECTOR_create(sizeof(IOTHUB_DEVICE_HANDLE));
+ if (handleData == NULL || handleData->perDeviceList == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_010: [ If creating the list fails, then IoTHubTransportHttp_Create shall fail and return NULL. ]*/
+ result = false;
+ }
+ else
+ {
+ result = true;
+ }
+ return result;
+}
+
+
+static TRANSPORT_LL_HANDLE IoTHubTransportHttp_Create(const IOTHUBTRANSPORT_CONFIG* config)
+{
+ HTTPTRANSPORT_HANDLE_DATA* result;
+ if (config == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_001: [If parameter config is NULL, then IoTHubTransportHttp_Create shall return NULL.]*/
+ LogError("invalid arg (configuration is missing)");
+ result = NULL;
+ }
+ else if (config->upperConfig == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_002: [ If field transportConfig is NULL, then IoTHubTransportHttp_Create shall return NULL. ]*/
+ LogError("invalid arg (upperConfig is NULL)");
+ result = NULL;
+ }
+ else if (config->upperConfig->protocol == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_003: [ If fields protocol, iotHubName or iotHubSuffix in transportConfig are NULL, then IoTHubTransportHttp_Create shall return NULL. ]*/
+ LogError("invalid arg (protocol is NULL)");
+ result = NULL;
+ }
+ else if (config->upperConfig->iotHubName == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_003: [ If fields protocol, iotHubName or iotHubSuffix in transportConfig are NULL, then IoTHubTransportHttp_Create shall return NULL. ]*/
+ LogError("invalid arg (iotHubName is NULL)");
+ result = NULL;
+ }
+ else if (config->upperConfig->iotHubSuffix == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_003: [ If fields protocol, iotHubName or iotHubSuffix in transportConfig are NULL, then IoTHubTransportHttp_Create shall return NULL. ]*/
+ LogError("invalid arg (iotHubSuffix is NULL)");
+ result = NULL;
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_130: [ IoTHubTransportHttp_Create shall allocate memory for the handle. ]*/
+ result = (HTTPTRANSPORT_HANDLE_DATA*)malloc(sizeof(HTTPTRANSPORT_HANDLE_DATA));
+ if (result == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_131: [ If allocation fails, IoTHubTransportHttp_Create shall fail and return NULL. ]*/
+ LogError("unable to malloc");
+ }
+ else
+ {
+ bool was_hostName_ok = create_hostName(result, config);
+ bool was_httpApiExHandle_ok = was_hostName_ok && create_httpApiExHandle(result, config);
+ bool was_perDeviceList_ok = was_httpApiExHandle_ok && create_perDeviceList(result);
+
+
+ if (was_perDeviceList_ok)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_011: [ Otherwise, IoTHubTransportHttp_Create shall succeed and return a non-NULL value. ]*/
+ result->doBatchedTransfers = false;
+ result->getMinimumPollingTime = DEFAULT_GETMINIMUMPOLLINGTIME;
+ }
+ else
+ {
+ if (was_httpApiExHandle_ok) destroy_httpApiExHandle(result);
+ if (was_hostName_ok) destroy_hostName(result);
+
+ free(result);
+ result = NULL;
+ }
+ }
+ }
+ return result;
+}
+
+static void IoTHubTransportHttp_Destroy(TRANSPORT_LL_HANDLE handle)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_012: [ IoTHubTransportHttp_Destroy shall do nothing is handle is NULL. ]*/
+ if (handle != NULL)
+ {
+ HTTPTRANSPORT_HANDLE_DATA* handleData = (HTTPTRANSPORT_HANDLE_DATA*)handle;
+ IOTHUB_DEVICE_HANDLE* listItem;
+
+ size_t deviceListSize = VECTOR_size(handleData->perDeviceList);
+
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_013: [ Otherwise, IoTHubTransportHttp_Destroy shall free all the resources currently in use. ]*/
+ for (size_t i = 0; i < deviceListSize; i++)
+ {
+ listItem = (IOTHUB_DEVICE_HANDLE *)VECTOR_element(handleData->perDeviceList, i);
+ HTTPTRANSPORT_PERDEVICE_DATA* perDeviceItem = (HTTPTRANSPORT_PERDEVICE_DATA*)(*listItem);
+ destroy_perDeviceData(perDeviceItem);
+ free(perDeviceItem);
+ }
+
+ destroy_hostName((HTTPTRANSPORT_HANDLE_DATA *)handle);
+ destroy_httpApiExHandle((HTTPTRANSPORT_HANDLE_DATA *)handle);
+ destroy_perDeviceList((HTTPTRANSPORT_HANDLE_DATA *)handle);
+ free(handle);
+ }
+}
+
+static int IoTHubTransportHttp_Subscribe(IOTHUB_DEVICE_HANDLE handle)
+{
+ int result;
+ if (handle == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_103: [ If parameter deviceHandle is NULL then IoTHubTransportHttp_Subscribe shall fail and return a non-zero value. ]*/
+ LogError("invalid arg passed to IoTHubTransportHttp_Subscribe");
+ result = __FAILURE__;
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_104: [ IoTHubTransportHttp_Subscribe shall locate deviceHandle in the transport device list by calling list_find_if. ]*/
+ IOTHUB_DEVICE_HANDLE* listItem = get_perDeviceDataItem(handle);
+
+ if (listItem == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_105: [ If the device structure is not found, then this function shall fail and return a non-zero value. ]*/
+ LogError("did not find device in transport handle");
+ result = __FAILURE__;
+ }
+ else
+ {
+ HTTPTRANSPORT_PERDEVICE_DATA * perDeviceItem;
+
+ perDeviceItem = (HTTPTRANSPORT_PERDEVICE_DATA *)(*listItem);
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_106: [ Otherwise, IoTHubTransportHttp_Subscribe shall set the device so that subsequent calls to DoWork should execute HTTP requests. ]*/
+ perDeviceItem->DoWork_PullMessage = true;
+ }
+ result = 0;
+ }
+ return result;
+}
+
+static void IoTHubTransportHttp_Unsubscribe(IOTHUB_DEVICE_HANDLE handle)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_107: [ If parameter deviceHandle is NULL then IoTHubTransportHttp_Unsubscribe shall fail do nothing. ]*/
+ if (handle != NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_108: [ IoTHubTransportHttp_Unsubscribe shall locate deviceHandle in the transport device list by calling list_find_if. ]*/
+ IOTHUB_DEVICE_HANDLE* listItem = get_perDeviceDataItem(handle);
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_109: [ If the device structure is not found, then this function shall fail and do nothing. ]*/
+ if (listItem != NULL)
+ {
+ HTTPTRANSPORT_PERDEVICE_DATA * perDeviceItem = (HTTPTRANSPORT_PERDEVICE_DATA *)(*listItem);
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_110: [ Otherwise, IoTHubTransportHttp_Subscribe shall set the device so that subsequent calls to DoWork shall not execute HTTP requests. ]*/
+ perDeviceItem->DoWork_PullMessage = false;
+ }
+ else
+ {
+ LogError("Device not found to unsuscribe.");
+ }
+ }
+ else
+ {
+ LogError("Null handle passed to Unsuscribe.");
+ }
+}
+
+static int IoTHubTransportHttp_Subscribe_DeviceTwin(IOTHUB_DEVICE_HANDLE handle)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_02_003: [ IoTHubTransportHttp_Subscribe_DeviceTwin shall return a non-zero value. ]*/
+ (void)handle;
+ int result = __FAILURE__;
+ LogError("IoTHubTransportHttp_Subscribe_DeviceTwin Not supported");
+ return result;
+}
+
+static void IoTHubTransportHttp_Unsubscribe_DeviceTwin(IOTHUB_DEVICE_HANDLE handle)
+{
+ (void)handle;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_02_004: [ IoTHubTransportHttp_Unsubscribe_DeviceTwin shall return ]*/
+ LogError("IoTHubTransportHttp_Unsubscribe_DeviceTwin Not supported");
+}
+
+static int IoTHubTransportHttp_Subscribe_DeviceMethod(IOTHUB_DEVICE_HANDLE handle)
+{
+ (void)handle;
+ int result = __FAILURE__;
+ LogError("not implemented (yet)");
+ return result;
+}
+
+static void IoTHubTransportHttp_Unsubscribe_DeviceMethod(IOTHUB_DEVICE_HANDLE handle)
+{
+ (void)handle;
+ LogError("not implemented (yet)");
+}
+
+static int IoTHubTransportHttp_DeviceMethod_Response(IOTHUB_DEVICE_HANDLE handle, METHOD_HANDLE methodId, const unsigned char* response, size_t response_size, int status_response)
+{
+ (void)handle;
+ (void)methodId;
+ (void)response;
+ (void)response_size;
+ (void)status_response;
+ LogError("not implemented (yet)");
+ return __FAILURE__;
+}
+
+/*produces a representation of the properties, if they exist*/
+/*if they do not exist, produces ""*/
+static int concat_Properties(STRING_HANDLE existing, MAP_HANDLE map, size_t* propertiesMessageSizeContribution)
+{
+ int result;
+ const char*const* keys;
+ const char*const* values;
+ size_t count;
+ if (Map_GetInternals(map, &keys, &values, &count) != MAP_OK)
+ {
+ result = __FAILURE__;
+ LogError("error while Map_GetInternals");
+ }
+ else
+ {
+
+ if (count == 0)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_064: [If IoTHubMessage does not have properties, then "properties":{...} shall be missing from the payload*/
+ /*no properties - do nothing with existing*/
+ result = 0;
+ *propertiesMessageSizeContribution = 0;
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_058: [If IoTHubMessage has properties, then they shall be serialized at the same level as "body" using the following pattern: "properties":{"iothub-app-name1":"value1","iothub-app-name2":"value2*/
+ if (STRING_concat(existing, ",\"properties\":") != 0)
+ {
+ /*go ahead and return it*/
+ result = __FAILURE__;
+ LogError("failed STRING_concat");
+ }
+ else if (appendMapToJSON(existing, keys, values, count) != 0)
+ {
+ result = __FAILURE__;
+ LogError("unable to append the properties");
+ }
+ else
+ {
+ /*all is fine*/
+ size_t i;
+ *propertiesMessageSizeContribution = 0;
+ for (i = 0; i < count; i++)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_063: [Every property name shall add to the message size the length of the property name + the length of the property value + 16 bytes.] */
+ *propertiesMessageSizeContribution += (strlen(keys[i]) + strlen(values[i]) + MAXIMUM_PROPERTY_OVERHEAD);
+ }
+ result = 0;
+ }
+ }
+ }
+ return result;
+}
+
+/*produces a JSON representation of the map : {"a": "value_of_a","b":"value_of_b"}*/
+static int appendMapToJSON(STRING_HANDLE existing, const char* const* keys, const char* const* values, size_t count) /*under consideration: move to MAP module when it has more than 1 user*/
+{
+ int result;
+ if (STRING_concat(existing, "{") != 0)
+ {
+ /*go on and return it*/
+ LogError("STRING_construct failed");
+ result = __FAILURE__;
+ }
+ else
+ {
+ size_t i;
+ for (i = 0; i < count; i++)
+ {
+ if (!(
+ (STRING_concat(existing, (i == 0) ? "\"" IOTHUB_APP_PREFIX : ",\"" IOTHUB_APP_PREFIX) == 0) &&
+ (STRING_concat(existing, keys[i]) == 0) &&
+ (STRING_concat(existing, "\":\"") == 0) &&
+ (STRING_concat(existing, values[i]) == 0) &&
+ (STRING_concat(existing, "\"") == 0)
+ ))
+ {
+ LogError("unable to STRING_concat");
+ break;
+ }
+ }
+
+ if (i < count)
+ {
+ result = __FAILURE__;
+ /*error, let it go through*/
+ }
+ else if (STRING_concat(existing, "}") != 0)
+ {
+ LogError("unable to STRING_concat");
+ result = __FAILURE__;
+ }
+ else
+ {
+ /*all is fine*/
+ result = 0;
+ }
+ }
+ return result;
+}
+
+/*makes the following string:{"body":"base64 encoding of the message content"[,"properties":{"a":"valueOfA"}]}*/
+/*return NULL if there was a failure, or a non-NULL STRING_HANDLE that contains the intended data*/
+static STRING_HANDLE make1EventJSONitem(PDLIST_ENTRY item, size_t *messageSizeContribution)
+{
+ STRING_HANDLE result; /*temp wants to contain :{"body":"base64 encoding of the message content"[,"properties":{"a":"valueOfA"}]}*/
+ IOTHUB_MESSAGE_LIST* message = containingRecord(item, IOTHUB_MESSAGE_LIST, entry);
+ IOTHUBMESSAGE_CONTENT_TYPE contentType = IoTHubMessage_GetContentType(message->messageHandle);
+
+ switch (contentType)
+ {
+ case IOTHUBMESSAGE_BYTEARRAY:
+ {
+ result = STRING_construct("{\"body\":\"");
+ if (result == NULL)
+ {
+ LogError("unable to STRING_construct");
+ }
+ else
+ {
+ const unsigned char* source;
+ size_t size;
+
+ if (IoTHubMessage_GetByteArray(message->messageHandle, &source, &size) != IOTHUB_MESSAGE_OK)
+ {
+ LogError("unable to get the data for the message.");
+ STRING_delete(result);
+ result = NULL;
+ }
+ else
+ {
+ STRING_HANDLE encoded = Base64_Encode_Bytes(source, size);
+ if (encoded == NULL)
+ {
+ LogError("unable to Base64_Encode_Bytes.");
+ STRING_delete(result);
+ result = NULL;
+ }
+ else
+ {
+ size_t propertiesSize = 0;
+ if (!(
+ (STRING_concat_with_STRING(result, encoded) == 0) &&
+ (STRING_concat(result, "\"") == 0) && /*\" because closing value*/
+ (concat_Properties(result, IoTHubMessage_Properties(message->messageHandle), &propertiesSize) == 0) &&
+ (STRING_concat(result, "},") == 0) /*the last comma shall be replaced by a ']' by DaCr's suggestion (which is awesome enough to receive credits in the source code)*/
+ ))
+ {
+ STRING_delete(result);
+ result = NULL;
+ LogError("unable to STRING_concat_with_STRING.");
+ }
+ else
+ {
+ /*all is fine... */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_062: [The message size is computed from the length of the payload + 384.] */
+ *messageSizeContribution = size + MAXIMUM_PAYLOAD_OVERHEAD + propertiesSize;
+ }
+ STRING_delete(encoded);
+ }
+ }
+ }
+ break;
+ }
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_057: [If a messages to be send has type IOTHUBMESSAGE_STRING, then its serialization shall be {"body":"JSON encoding of the string", "base64Encoded":false}] */
+ case IOTHUBMESSAGE_STRING:
+ {
+ result = STRING_construct("{\"body\":");
+ if (result == NULL)
+ {
+ LogError("unable to STRING_construct");
+ }
+ else
+ {
+ const char* source = IoTHubMessage_GetString(message->messageHandle);
+ if (source == NULL)
+ {
+ LogError("unable to IoTHubMessage_GetString");
+ STRING_delete(result);
+ result = NULL;
+ }
+ else
+ {
+ STRING_HANDLE asJson = STRING_new_JSON(source);
+ if (asJson == NULL)
+ {
+ LogError("unable to STRING_new_JSON");
+ STRING_delete(result);
+ result = NULL;
+ }
+ else
+ {
+ size_t propertiesSize = 0;
+ if (!(
+ (STRING_concat_with_STRING(result, asJson) == 0) &&
+ (STRING_concat(result, ",\"base64Encoded\":false") == 0) &&
+ (concat_Properties(result, IoTHubMessage_Properties(message->messageHandle), &propertiesSize) == 0) &&
+ (STRING_concat(result, "},") == 0) /*the last comma shall be replaced by a ']' by DaCr's suggestion (which is awesome enough to receive credits in the source code)*/
+ ))
+ {
+ LogError("unable to STRING_concat_with_STRING");
+ STRING_delete(result);
+ result = NULL;
+ }
+ else
+ {
+ /*result has the intended content*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_062: [The message size is computed from the length of the payload + 384.] */
+ *messageSizeContribution = strlen(source) + MAXIMUM_PAYLOAD_OVERHEAD + propertiesSize;
+ }
+ STRING_delete(asJson);
+ }
+ }
+ }
+ break;
+ }
+ default:
+ {
+ LogError("an unknown message type was encountered (%d)", contentType);
+ result = NULL; /*unknown message type*/
+ break;
+ }
+ }
+ return result;
+}
+
+#define MAKE_PAYLOAD_RESULT_VALUES \
+ MAKE_PAYLOAD_OK, /*returned when there is a payload to be later send by HTTP*/ \
+ MAKE_PAYLOAD_NO_ITEMS, /*returned when there are no items to be send*/ \
+ MAKE_PAYLOAD_ERROR, /*returned when there were errors*/ \
+ MAKE_PAYLOAD_FIRST_ITEM_DOES_NOT_FIT /*returned when the first item doesn't fit*/
+
+DEFINE_ENUM(MAKE_PAYLOAD_RESULT, MAKE_PAYLOAD_RESULT_VALUES);
+
+/*this function assembles several {"body":"base64 encoding of the message content"," base64Encoded": true} into 1 payload*/
+/*Codes_SRS_TRANSPORTMULTITHTTP_17_056: [IoTHubTransportHttp_DoWork shall build the following string:[{"body":"base64 encoding of the message1 content"},{"body":"base64 encoding of the message2 content"}...]]*/
+static MAKE_PAYLOAD_RESULT makePayload(HTTPTRANSPORT_PERDEVICE_DATA* deviceData, STRING_HANDLE* payload)
+{
+ MAKE_PAYLOAD_RESULT result;
+ size_t allMessagesSize = 0;
+ *payload = STRING_construct("[");
+ if (*payload == NULL)
+ {
+ LogError("unable to STRING_construct");
+ result = MAKE_PAYLOAD_ERROR;
+ }
+ else
+ {
+ bool isFirst = true;
+ PDLIST_ENTRY actual;
+ bool keepGoing = true; /*keepGoing gets sometimes to false from within the loop*/
+ /*either all the items enter the list or only some*/
+ result = MAKE_PAYLOAD_OK; /*optimistically initializing it*/
+ while (keepGoing && ((actual = deviceData->waitingToSend->Flink) != deviceData->waitingToSend))
+ {
+ size_t messageSize;
+ STRING_HANDLE temp = make1EventJSONitem(actual, &messageSize);
+ if (isFirst)
+ {
+ isFirst = false;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_067: [If there is no valid payload, IoTHubTransportHttp_DoWork shall advance to the next activity.]*/
+ if (temp == NULL) /*first item failed to create, nothing to send*/
+ {
+ result = MAKE_PAYLOAD_ERROR;
+ STRING_delete(*payload);
+ *payload = NULL;
+ keepGoing = false;
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_065: [If the oldest message in waitingToSend causes the message size to exceed the message size limit then it shall be removed from waitingToSend, and IoTHubClientCore_LL_SendComplete shall be called. Parameter PDLIST_ENTRY completed shall point to a list containing only the oldest item, and parameter IOTHUB_CLIENT_CONFIRMATION_RESULT result shall be set to IOTHUB_CLIENT_CONFIRMATION_BATCHSTATE_FAILED.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_061: [The message size shall be limited to 255KB - 1 byte.]*/
+ if (messageSize > MAXIMUM_MESSAGE_SIZE)
+ {
+ PDLIST_ENTRY head = DList_RemoveHeadList(deviceData->waitingToSend); /*actually this is the same as "actual", but now it is removed*/
+ DList_InsertTailList(&(deviceData->eventConfirmations), head);
+ result = MAKE_PAYLOAD_FIRST_ITEM_DOES_NOT_FIT;
+ STRING_delete(*payload);
+ *payload = NULL;
+ keepGoing = false;
+ }
+ else
+ {
+ if (STRING_concat_with_STRING(*payload, temp) != 0)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_067: [If there is no valid payload, IoTHubTransportHttp_DoWork shall advance to the next activity.]*/
+ result = MAKE_PAYLOAD_ERROR;
+ STRING_delete(*payload);
+ *payload = NULL;
+ keepGoing = false;
+ }
+ else
+ {
+ /*first item was put nicely in the payload*/
+ PDLIST_ENTRY head = DList_RemoveHeadList(deviceData->waitingToSend); /*actually this is the same as "actual", but now it is removed*/
+ DList_InsertTailList(&(deviceData->eventConfirmations), head);
+ allMessagesSize += messageSize;
+ }
+ }
+ STRING_delete(temp);
+ }
+ }
+ else
+ {
+ /*there is at least 1 item already in the payload*/
+ if (temp == NULL)
+ {
+ /*there are multiple payloads encoded, the last one had an internal error, just go with those - closing the payload happens "after the loop"*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_066: [If at any point during construction of the string there are errors, IoTHubTransportHttp_DoWork shall use the so far constructed string as payload.]*/
+ result = MAKE_PAYLOAD_OK;
+ keepGoing = false;
+ }
+ else
+ {
+ if (allMessagesSize + messageSize > MAXIMUM_MESSAGE_SIZE)
+ {
+ /*this item doesn't make it to the payload, but the payload is valid so far*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_066: [If at any point during construction of the string there are errors, IoTHubTransportHttp_DoWork shall use the so far constructed string as payload.]*/
+ result = MAKE_PAYLOAD_OK;
+ keepGoing = false;
+ }
+ else if (STRING_concat_with_STRING(*payload, temp) != 0)
+ {
+ /*should still send what there is so far...*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_066: [If at any point during construction of the string there are errors, IoTHubTransportHttp_DoWork shall use the so far constructed string as payload.]*/
+ result = MAKE_PAYLOAD_OK;
+ keepGoing = false;
+ }
+ else
+ {
+ /*cool, the payload made it there, let's continue... */
+ PDLIST_ENTRY head = DList_RemoveHeadList(deviceData->waitingToSend); /*actually this is the same as "actual", but now it is removed*/
+ DList_InsertTailList(&(deviceData->eventConfirmations), head);
+ allMessagesSize += messageSize;
+ }
+ STRING_delete(temp);
+ }
+ }
+ }
+
+ /*closing the payload*/
+ if (result == MAKE_PAYLOAD_OK)
+ {
+ ((char*)STRING_c_str(*payload))[STRING_length(*payload) - 1] = ']'; /*TODO - do this in STRING_HANDLE*/
+ }
+ else
+ {
+ /*no need to close anything*/
+ }
+ }
+ return result;
+}
+
+static void reversePutListBackIn(PDLIST_ENTRY source, PDLIST_ENTRY destination)
+{
+ /*this function takes a list, and inserts it in another list. When done in the context of this file, it reverses the effects of a not-able-to-send situation*/
+ DList_AppendTailList(destination->Flink, source);
+ DList_RemoveEntryList(source);
+ DList_InitializeListHead(source);
+}
+
+static void DoEvent(HTTPTRANSPORT_HANDLE_DATA* handleData, HTTPTRANSPORT_PERDEVICE_DATA* deviceData, IOTHUB_CLIENT_CORE_LL_HANDLE iotHubClientHandle)
+{
+
+ if (DList_IsListEmpty(deviceData->waitingToSend))
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_060: [If the list is empty then IoTHubTransportHttp_DoWork shall proceed to the following action.] */
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_053: [If option SetBatching is true then _Dowork shall send batched event message as specced below.] */
+ if (handleData->doBatchedTransfers)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_054: [Request HTTP headers shall have the value of "Content-Type" created or updated to "application/vnd.microsoft.iothub.json" by a call to HTTPHeaders_ReplaceHeaderNameValuePair.] */
+ if (HTTPHeaders_ReplaceHeaderNameValuePair(deviceData->eventHTTPrequestHeaders, CONTENT_TYPE, APPLICATION_VND_MICROSOFT_IOTHUB_JSON) != HTTP_HEADERS_OK)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_055: [If updating Content-Type fails for any reason, then _DoWork shall advance to the next action.] */
+ LogError("unable to HTTPHeaders_ReplaceHeaderNameValuePair");
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_059: [It shall inspect the "waitingToSend" DLIST passed in config structure.] */
+ STRING_HANDLE payload;
+ switch (makePayload(deviceData, &payload))
+ {
+ case MAKE_PAYLOAD_OK:
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_068: [Once a final payload has been obtained, IoTHubTransportHttp_DoWork shall call HTTPAPIEX_SAS_ExecuteRequest passing the following parameters:] */
+ BUFFER_HANDLE temp = BUFFER_new();
+ if (temp == NULL)
+ {
+ LogError("unable to BUFFER_new");
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_067: [If there is no valid payload, IoTHubTransportHttp_DoWork shall advance to the next activity.]*/
+ reversePutListBackIn(&(deviceData->eventConfirmations), deviceData->waitingToSend);
+ }
+ else
+ {
+ if (BUFFER_build(temp, (const unsigned char*)STRING_c_str(payload), STRING_length(payload)) != 0)
+ {
+ LogError("unable to BUFFER_build");
+ //items go back to waitingToSend
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_067: [If there is no valid payload, IoTHubTransportHttp_DoWork shall advance to the next activity.]*/
+ reversePutListBackIn(&(deviceData->eventConfirmations), deviceData->waitingToSend);
+ }
+ else
+ {
+ unsigned int statusCode;
+ if (HTTPAPIEX_SAS_ExecuteRequest(
+ deviceData->sasObject,
+ handleData->httpApiExHandle,
+ HTTPAPI_REQUEST_POST,
+ STRING_c_str(deviceData->eventHTTPrelativePath),
+ deviceData->eventHTTPrequestHeaders,
+ temp,
+ &statusCode,
+ NULL,
+ NULL
+ ) != HTTPAPIEX_OK)
+ {
+ LogError("unable to HTTPAPIEX_ExecuteRequest");
+ //items go back to waitingToSend
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_069: [if HTTPAPIEX_SAS_ExecuteRequest fails or the http status code >=300 then IoTHubTransportHttp_DoWork shall not do any other action (it is assumed at the next _DoWork it shall be retried).] */
+ reversePutListBackIn(&(deviceData->eventConfirmations), deviceData->waitingToSend);
+ }
+ else
+ {
+ if (statusCode < 300)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_070: [If HTTPAPIEX_SAS_ExecuteRequest does not fail and http status code <300 then IoTHubTransportHttp_DoWork shall call IoTHubClientCore_LL_SendComplete. Parameter PDLIST_ENTRY completed shall point to a list containing all the items batched, and parameter IOTHUB_CLIENT_CONFIRMATION_RESULT result shall be set to IOTHUB_CLIENT_CONFIRMATION_OK. The batched items shall be removed from waitingToSend.] */
+ IoTHubClientCore_LL_SendComplete(iotHubClientHandle, &(deviceData->eventConfirmations), IOTHUB_CLIENT_CONFIRMATION_OK);
+ }
+ else
+ {
+ //items go back to waitingToSend
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_069: [if HTTPAPIEX_SAS_ExecuteRequest fails or the http status code >=300 then IoTHubTransportHttp_DoWork shall not do any other action (it is assumed at the next _DoWork it shall be retried).] */
+ LogError("unexpected HTTP status code (%u)", statusCode);
+ reversePutListBackIn(&(deviceData->eventConfirmations), deviceData->waitingToSend);
+ }
+ }
+ }
+ BUFFER_delete(temp);
+ }
+ STRING_delete(payload);
+ break;
+ }
+ case MAKE_PAYLOAD_FIRST_ITEM_DOES_NOT_FIT:
+ {
+ IoTHubClientCore_LL_SendComplete(iotHubClientHandle, &(deviceData->eventConfirmations), IOTHUB_CLIENT_CONFIRMATION_ERROR); /*takes care of emptying the list too*/
+ break;
+ }
+ case MAKE_PAYLOAD_ERROR:
+ {
+ LogError("unrecoverable errors while building a batch message");
+ break;
+ }
+ case MAKE_PAYLOAD_NO_ITEMS:
+ {
+ /*do nothing*/
+ break;
+ }
+ default:
+ {
+ LogError("internal error: switch's default branch reached when never intended");
+ break;
+ }
+ }
+ }
+ }
+ else
+ {
+ const unsigned char* messageContent = NULL;
+ size_t messageSize = 0;
+ size_t originalMessageSize = 0;
+ IOTHUB_MESSAGE_LIST* message = containingRecord(deviceData->waitingToSend->Flink, IOTHUB_MESSAGE_LIST, entry);
+ IOTHUBMESSAGE_CONTENT_TYPE contentType = IoTHubMessage_GetContentType(message->messageHandle);
+
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_073: [The message size is computed from the length of the payload + 384.]*/
+ if (!(
+ (((contentType == IOTHUBMESSAGE_BYTEARRAY) &&
+ (IoTHubMessage_GetByteArray(message->messageHandle, &messageContent, &originalMessageSize) == IOTHUB_MESSAGE_OK))
+ ? ((void)(messageSize = originalMessageSize + MAXIMUM_PAYLOAD_OVERHEAD), 1)
+ : 0)
+
+ ||
+
+ ((contentType == IOTHUBMESSAGE_STRING) &&
+ ((void)(messageContent = (const unsigned char*)IoTHubMessage_GetString(message->messageHandle)),
+ ((void)(messageSize = MAXIMUM_PAYLOAD_OVERHEAD + (originalMessageSize = ((messageContent == NULL)
+ ? 0
+ : strlen((const char*)messageContent))))),
+ messageContent != NULL)
+ )
+ ))
+ {
+ LogError("unable to get the message content");
+ /*go on...*/
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_075: [If the oldest message in waitingToSend causes the message to exceed the message size limit then it shall be removed from waitingToSend, and IoTHubClientCore_LL_SendComplete shall be called. Parameter PDLIST_ENTRY completed shall point to a list containing only the oldest item, and parameter IOTHUB_CLIENT_CONFIRMATION_RESULT result shall be set to IOTHUB_CLIENT_CONFIRMATION_BATCHSTATE_FAILED.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_072: [The message size shall be limited to 255KB -1 bytes.] */
+ if (messageSize > MAXIMUM_MESSAGE_SIZE)
+ {
+ PDLIST_ENTRY head = DList_RemoveHeadList(deviceData->waitingToSend); /*actually this is the same as "actual", but now it is removed*/
+ DList_InsertTailList(&(deviceData->eventConfirmations), head);
+ IoTHubClientCore_LL_SendComplete(iotHubClientHandle, &(deviceData->eventConfirmations), IOTHUB_CLIENT_CONFIRMATION_ERROR); /*takes care of emptying the list too*/
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_071: [If option SetBatching is false then _Dowork shall send individual event message as specced below.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_076: [A clone of the event HTTP request headers shall be created.]*/
+ HTTP_HEADERS_HANDLE clonedEventHTTPrequestHeaders = HTTPHeaders_Clone(deviceData->eventHTTPrequestHeaders);
+ if (clonedEventHTTPrequestHeaders == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_079: [If any HTTP header operation fails, _DoWork shall advance to the next action.] */
+ LogError("HTTPHeaders_Clone failed");
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_077: [The cloned HTTP headers shall have the HTTP header "Content-Type" set to "application/octet-stream".] */
+ if (HTTPHeaders_ReplaceHeaderNameValuePair(clonedEventHTTPrequestHeaders, CONTENT_TYPE, APPLICATION_OCTET_STREAM) != HTTP_HEADERS_OK)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_079: [If any HTTP header operation fails, _DoWork shall advance to the next action.] */
+ LogError("HTTPHeaders_ReplaceHeaderNameValuePair failed");
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_078: [Every message property "property":"value" shall be added to the HTTP headers as an individual header "iothub-app-property":"value".] */
+ MAP_HANDLE map = IoTHubMessage_Properties(message->messageHandle);
+ const char*const* keys;
+ const char*const* values;
+ size_t count;
+ if (Map_GetInternals(map, &keys, &values, &count) != MAP_OK)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_079: [If any HTTP header operation fails, _DoWork shall advance to the next action.] */
+ LogError("unable to Map_GetInternals");
+ }
+ else
+ {
+ size_t i;
+ bool goOn = true;
+ const char* msgId;
+ const char* corrId;
+ const char* userDefinedContentType;
+ const char* contentEncoding;
+
+ for (i = 0; (i < count) && goOn; i++)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_074: [Every property name shall add to the message size the length of the property name + the length of the property value + 16 bytes.] */
+ messageSize += (strlen(values[i]) + strlen(keys[i]) + MAXIMUM_PROPERTY_OVERHEAD);
+ if (messageSize > MAXIMUM_MESSAGE_SIZE)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_072: [The message size shall be limited to 255KB -1 bytes.] */
+ PDLIST_ENTRY head = DList_RemoveHeadList(deviceData->waitingToSend); /*actually this is the same as "actual", but now it is removed*/
+ DList_InsertTailList(&(deviceData->eventConfirmations), head);
+ IoTHubClientCore_LL_SendComplete(iotHubClientHandle, &(deviceData->eventConfirmations), IOTHUB_CLIENT_CONFIRMATION_ERROR); /*takes care of emptying the list too*/
+ goOn = false;
+ }
+ else
+ {
+ STRING_HANDLE temp = STRING_construct(IOTHUB_APP_PREFIX);
+ if (temp == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_079: [If any HTTP header operation fails, _DoWork shall advance to the next action.] */
+ LogError("unable to STRING_construct");
+ goOn = false;
+ }
+ else
+ {
+ if (STRING_concat(temp, keys[i]) != 0)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_079: [If any HTTP header operation fails, _DoWork shall advance to the next action.] */
+ LogError("unable to STRING_concat");
+ goOn = false;
+ }
+ else
+ {
+ if (HTTPHeaders_ReplaceHeaderNameValuePair(clonedEventHTTPrequestHeaders, STRING_c_str(temp), values[i]) != HTTP_HEADERS_OK)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_079: [If any HTTP header operation fails, _DoWork shall advance to the next action.] */
+ LogError("unable to HTTPHeaders_ReplaceHeaderNameValuePair");
+ goOn = false;
+ }
+ }
+ STRING_delete(temp);
+ }
+ }
+ }
+
+ // Add the Message Id and the Correlation Id
+ msgId = IoTHubMessage_GetMessageId(message->messageHandle);
+ if (goOn && msgId != NULL)
+ {
+ if (HTTPHeaders_ReplaceHeaderNameValuePair(clonedEventHTTPrequestHeaders, IOTHUB_MESSAGE_ID, msgId) != HTTP_HEADERS_OK)
+ {
+ LogError("unable to HTTPHeaders_ReplaceHeaderNameValuePair");
+ goOn = false;
+ }
+ }
+
+ corrId = IoTHubMessage_GetCorrelationId(message->messageHandle);
+ if (goOn && corrId != NULL)
+ {
+ if (HTTPHeaders_ReplaceHeaderNameValuePair(clonedEventHTTPrequestHeaders, IOTHUB_CORRELATION_ID, corrId) != HTTP_HEADERS_OK)
+ {
+ LogError("unable to HTTPHeaders_ReplaceHeaderNameValuePair");
+ goOn = false;
+ }
+ }
+
+ // Codes_SRS_TRANSPORTMULTITHTTP_09_001: [ If the IoTHubMessage being sent contains property `content-type` it shall be added to the HTTP headers as "iothub-contenttype":"value". ]
+ userDefinedContentType = IoTHubMessage_GetContentTypeSystemProperty(message->messageHandle);
+ if (goOn && userDefinedContentType != NULL)
+ {
+ if (HTTPHeaders_ReplaceHeaderNameValuePair(clonedEventHTTPrequestHeaders, IOTHUB_CONTENT_TYPE_D2C, userDefinedContentType) != HTTP_HEADERS_OK)
+ {
+ LogError("unable to HTTPHeaders_ReplaceHeaderNameValuePair (content-type)");
+ goOn = false;
+ }
+ }
+
+ // Codes_SRS_TRANSPORTMULTITHTTP_09_002: [ If the IoTHubMessage being sent contains property `content-encoding` it shall be added to the HTTP headers as "iothub-contentencoding":"value". ]
+ contentEncoding = IoTHubMessage_GetContentEncodingSystemProperty(message->messageHandle);
+ if (goOn && contentEncoding != NULL)
+ {
+ if (HTTPHeaders_ReplaceHeaderNameValuePair(clonedEventHTTPrequestHeaders, IOTHUB_CONTENT_ENCODING_D2C, contentEncoding) != HTTP_HEADERS_OK)
+ {
+ LogError("unable to HTTPHeaders_ReplaceHeaderNameValuePair (content-encoding)");
+ goOn = false;
+ }
+ }
+
+ if (!goOn)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_079: [If any HTTP header operation fails, _DoWork shall advance to the next action.] */
+ }
+ else
+ {
+ BUFFER_HANDLE toBeSend = BUFFER_new();
+ if (toBeSend == NULL)
+ {
+ LogError("unable to BUFFER_new");
+ }
+ else
+ {
+ if (BUFFER_build(toBeSend, messageContent, originalMessageSize) != 0)
+ {
+ LogError("unable to BUFFER_build");
+ }
+ else
+ {
+ unsigned int statusCode = 0;
+ HTTPAPIEX_RESULT r;
+ if (deviceData->deviceSasToken != NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_03_001: [if a deviceSasToken exists, HTTPHeaders_ReplaceHeaderNameValuePair shall be invoked with "Authorization" as its second argument and STRING_c_str (deviceSasToken) as its third argument.]*/
+ if (HTTPHeaders_ReplaceHeaderNameValuePair(clonedEventHTTPrequestHeaders, "Authorization", STRING_c_str(deviceData->deviceSasToken)) != HTTP_HEADERS_OK)
+ {
+ r = HTTPAPIEX_ERROR;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_03_002: [If the result of the invocation of HTTPHeaders_ReplaceHeaderNameValuePair is NOT HTTP_HEADERS_OK then fallthrough.]*/
+ LogError("Unable to replace the old SAS Token.");
+ }
+
+ /*Codes_SRS_TRANSPORTMULTITHTTP_03_003: [If a deviceSasToken exists, IoTHubTransportHttp_DoWork shall call HTTPAPIEX_ExecuteRequest passing the following parameters] */
+ else if ((r = HTTPAPIEX_ExecuteRequest(
+ handleData->httpApiExHandle,
+ HTTPAPI_REQUEST_POST,
+ STRING_c_str(deviceData->eventHTTPrelativePath),
+ clonedEventHTTPrequestHeaders,
+ toBeSend,
+ &statusCode,
+ NULL,
+ NULL
+ )) != HTTPAPIEX_OK)
+ {
+ LogError("Unable to HTTPAPIEX_ExecuteRequest.");
+ }
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_080: [If a deviceSasToken does not exist, IoTHubTransportHttp_DoWork shall call HTTPAPIEX_SAS_ExecuteRequest passing the following parameters] */
+ if ((r = HTTPAPIEX_SAS_ExecuteRequest(
+ deviceData->sasObject,
+ handleData->httpApiExHandle,
+ HTTPAPI_REQUEST_POST,
+ STRING_c_str(deviceData->eventHTTPrelativePath),
+ clonedEventHTTPrequestHeaders,
+ toBeSend,
+ &statusCode,
+ NULL,
+ NULL
+ )) != HTTPAPIEX_OK)
+ {
+ LogError("unable to HTTPAPIEX_SAS_ExecuteRequest");
+ }
+ }
+ if (r == HTTPAPIEX_OK)
+ {
+ if (statusCode < 300)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_082: [If HTTPAPIEX_SAS_ExecuteRequest does not fail and http status code <300 then IoTHubTransportHttp_DoWork shall call IoTHubClientCore_LL_SendComplete. Parameter PDLIST_ENTRY completed shall point to a list the item send, and parameter IOTHUB_CLIENT_CONFIRMATION_RESULT result shall be set to IOTHUB_CLIENT_CONFIRMATION_OK. The item shall be removed from waitingToSend.] */
+ PDLIST_ENTRY justSent = DList_RemoveHeadList(deviceData->waitingToSend); /*actually this is the same as "actual", but now it is removed*/
+ DList_InsertTailList(&(deviceData->eventConfirmations), justSent);
+ IoTHubClientCore_LL_SendComplete(iotHubClientHandle, &(deviceData->eventConfirmations), IOTHUB_CLIENT_CONFIRMATION_OK); /*takes care of emptying the list too*/
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_081: [If HTTPAPIEX_SAS_ExecuteRequest fails or the http status code >=300 then IoTHubTransportHttp_DoWork shall not do any other action (it is assumed at the next _DoWork it shall be retried).] */
+ LogError("unexpected HTTP status code (%u)", statusCode);
+ }
+ }
+ }
+ BUFFER_delete(toBeSend);
+ }
+ }
+ }
+ }
+ HTTPHeaders_Free(clonedEventHTTPrequestHeaders);
+ }
+ }
+ }
+ }
+ }
+}
+
+static bool abandonOrAcceptMessage(HTTPTRANSPORT_HANDLE_DATA* handleData, HTTPTRANSPORT_PERDEVICE_DATA* deviceData, const char* ETag, IOTHUBMESSAGE_DISPOSITION_RESULT action)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_097: [_DoWork shall call HTTPAPIEX_SAS_ExecuteRequest with the following parameters:
+ -requestType: POST
+ -relativePath: abandon relative path begin (as created by _Create) + value of ETag + "/abandon?api-version=2016-11-14"
+ - requestHttpHeadersHandle: an HTTP headers instance containing the following
+ Authorization: " "
+ If-Match: value of ETag
+ - requestContent: NULL
+ - statusCode: a pointer to unsigned int which might be examined for logging
+ - responseHeadearsHandle: NULL
+ - responseContent: NULL]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_099: [_DoWork shall call HTTPAPIEX_SAS_ExecuteRequest with the following parameters:
+ -requestType: DELETE
+ -relativePath: abandon relative path begin + value of ETag + "?api-version=2016-11-14"
+ - requestHttpHeadersHandle: an HTTP headers instance containing the following
+ Authorization: " "
+ If-Match: value of ETag
+ - requestContent: NULL
+ - statusCode: a pointer to unsigned int which might be used by logging
+ - responseHeadearsHandle: NULL
+ - responseContent: NULL]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_101: [_DoWork shall call HTTPAPIEX_SAS_ExecuteRequest with the following parameters:
+ -requestType: DELETE
+ -relativePath: abandon relative path begin + value of ETag +"?api-version=2016-11-14" + "&reject"
+ - requestHttpHeadersHandle: an HTTP headers instance containing the following
+ Authorization: " "
+ If-Match: value of ETag
+ - requestContent: NULL
+ - statusCode: a pointer to unsigned int which might be used by logging
+ - responseHeadearsHandle: NULL
+ - responseContent: NULL]*/
+
+ bool result;
+ STRING_HANDLE fullAbandonRelativePath = STRING_clone(deviceData->abandonHTTPrelativePathBegin);
+ if (fullAbandonRelativePath == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_098: [Abandoning the message is considered successful if the HTTPAPIEX_SAS_ExecuteRequest doesn't fail and the statusCode is 204.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_100: [Accepting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_102: [Rejecting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ LogError("unable to STRING_clone");
+ result = false;
+ }
+ else
+ {
+ STRING_HANDLE ETagUnquoted = STRING_construct_n(ETag + 1, strlen(ETag) - 2); /*skip first character which is '"' and the last one (which is also '"')*/
+ if (ETagUnquoted == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_098: [Abandoning the message is considered successful if the HTTPAPIEX_SAS_ExecuteRequest doesn't fail and the statusCode is 204.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_100: [Accepting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_102: [Rejecting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ LogError("unable to STRING_construct_n");
+ result = false;
+ }
+ else
+ {
+ if (!(
+ (STRING_concat_with_STRING(fullAbandonRelativePath, ETagUnquoted) == 0) &&
+ (STRING_concat(fullAbandonRelativePath, (action == IOTHUBMESSAGE_ABANDONED) ? "/abandon" API_VERSION : ((action == IOTHUBMESSAGE_REJECTED) ? API_VERSION "&reject" : API_VERSION)) == 0)
+ ))
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_098: [Abandoning the message is considered successful if the HTTPAPIEX_SAS_ExecuteRequest doesn't fail and the statusCode is 204.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_100: [Accepting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_102: [Rejecting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ LogError("unable to STRING_concat");
+ result = false;
+ }
+ else
+ {
+ HTTP_HEADERS_HANDLE abandonRequestHttpHeaders = HTTPHeaders_Alloc();
+ if (abandonRequestHttpHeaders == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_098: [Abandoning the message is considered successful if the HTTPAPIEX_SAS_ExecuteRequest doesn't fail and the statusCode is 204.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_100: [Accepting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_102: [Rejecting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ LogError("unable to HTTPHeaders_Alloc");
+ result = false;
+ }
+ else
+ {
+ if (!(
+ (addUserAgentHeaderInfo(deviceData->iotHubClientHandle, abandonRequestHttpHeaders) == HTTP_HEADERS_OK) &&
+ (HTTPHeaders_AddHeaderNameValuePair(abandonRequestHttpHeaders, "Authorization", " ") == HTTP_HEADERS_OK) &&
+ (HTTPHeaders_AddHeaderNameValuePair(abandonRequestHttpHeaders, "If-Match", ETag) == HTTP_HEADERS_OK)
+ ))
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_098: [Abandoning the message is considered successful if the HTTPAPIEX_SAS_ExecuteRequest doesn't fail and the statusCode is 204.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_100: [Accepting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_102: [Rejecting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ LogError("unable to HTTPHeaders_AddHeaderNameValuePair");
+ result = false;
+ }
+ else
+ {
+ unsigned int statusCode = 0;
+ HTTPAPIEX_RESULT r;
+ if (deviceData->deviceSasToken != NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_03_001: [if a deviceSasToken exists, HTTPHeaders_ReplaceHeaderNameValuePair shall be invoked with "Authorization" as its second argument and STRING_c_str (deviceSasToken) as its third argument.]*/
+ if (HTTPHeaders_ReplaceHeaderNameValuePair(abandonRequestHttpHeaders, "Authorization", STRING_c_str(deviceData->deviceSasToken)) != HTTP_HEADERS_OK)
+ {
+ r = HTTPAPIEX_ERROR;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_03_002: [If the result of the invocation of HTTPHeaders_ReplaceHeaderNameValuePair is NOT HTTP_HEADERS_OK then fallthrough.]*/
+ LogError("Unable to replace the old SAS Token.");
+ result = false;
+ }
+ else if ((r = HTTPAPIEX_ExecuteRequest(
+ handleData->httpApiExHandle,
+ (action == IOTHUBMESSAGE_ABANDONED) ? HTTPAPI_REQUEST_POST : HTTPAPI_REQUEST_DELETE, /*-requestType: POST */
+ STRING_c_str(fullAbandonRelativePath), /*-relativePath: abandon relative path begin (as created by _Create) + value of ETag + "/abandon?api-version=2016-11-14" */
+ abandonRequestHttpHeaders, /*- requestHttpHeadersHandle: an HTTP headers instance containing the following */
+ NULL, /*- requestContent: NULL */
+ &statusCode, /*- statusCode: a pointer to unsigned int which might be examined for logging */
+ NULL, /*- responseHeadearsHandle: NULL */
+ NULL /*- responseContent: NULL] */
+ )) != HTTPAPIEX_OK)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_098: [Abandoning the message is considered successful if the HTTPAPIEX_SAS_ExecuteRequest doesn't fail and the statusCode is 204.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_100: [Accepting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_102: [Rejecting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ LogError("Unable to HTTPAPIEX_ExecuteRequest.");
+ result = false;
+ }
+ }
+ else if ((r = HTTPAPIEX_SAS_ExecuteRequest(
+ deviceData->sasObject,
+ handleData->httpApiExHandle,
+ (action == IOTHUBMESSAGE_ABANDONED) ? HTTPAPI_REQUEST_POST : HTTPAPI_REQUEST_DELETE, /*-requestType: POST */
+ STRING_c_str(fullAbandonRelativePath), /*-relativePath: abandon relative path begin (as created by _Create) + value of ETag + "/abandon?api-version=2016-11-14" */
+ abandonRequestHttpHeaders, /*- requestHttpHeadersHandle: an HTTP headers instance containing the following */
+ NULL, /*- requestContent: NULL */
+ &statusCode, /*- statusCode: a pointer to unsigned int which might be examined for logging */
+ NULL, /*- responseHeadearsHandle: NULL */
+ NULL /*- responseContent: NULL] */
+ )) != HTTPAPIEX_OK)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_098: [Abandoning the message is considered successful if the HTTPAPIEX_SAS_ExecuteRequest doesn't fail and the statusCode is 204.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_100: [Accepting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_102: [Rejecting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ LogError("unable to HTTPAPIEX_SAS_ExecuteRequest");
+ result = false;
+ }
+ if (r == HTTPAPIEX_OK)
+ {
+ if (statusCode != 204)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_098: [Abandoning the message is considered successful if the HTTPAPIEX_SAS_ExecuteRequest doesn't fail and the statusCode is 204.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_100: [Accepting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_102: [Rejecting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ LogError("unexpected status code returned %u (was expecting 204)", statusCode);
+ result = false;
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_098: [Abandoning the message is considered successful if the HTTPAPIEX_SAS_ExecuteRequest doesn't fail and the statusCode is 204.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_100: [Accepting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_102: [Rejecting a message is successful when HTTPAPIEX_SAS_ExecuteRequest completes successfully and the status code is 204.] */
+ /*all is fine*/
+ result = true;
+ }
+ }
+ else
+ {
+ result = false;
+ }
+ }
+ HTTPHeaders_Free(abandonRequestHttpHeaders);
+ }
+ }
+ STRING_delete(ETagUnquoted);
+ }
+ STRING_delete(fullAbandonRelativePath);
+ }
+ return result;
+}
+
+static IOTHUB_CLIENT_RESULT IoTHubTransportHttp_SendMessageDisposition(MESSAGE_CALLBACK_INFO* message_data, IOTHUBMESSAGE_DISPOSITION_RESULT disposition)
+{
+ IOTHUB_CLIENT_RESULT result;
+ if (message_data == NULL)
+ {
+ /* Codes_SRS_TRANSPORTMULTITHTTP_10_001: [If messageData is NULL, IoTHubTransportHttp_SendMessageDisposition shall fail and return IOTHUB_CLIENT_ERROR.] */
+ LogError("invalid argument messageData is NULL");
+ result = IOTHUB_CLIENT_ERROR;
+ }
+ else
+ {
+ if (message_data->messageHandle == NULL)
+ {
+ /* Codes_SRS_TRANSPORTMULTITHTTP_10_002: [If any of the messageData fields are NULL, IoTHubTransportHttp_SendMessageDisposition shall fail and return IOTHUB_CLIENT_ERROR.] */
+ LogError("invalid message handle");
+ result = IOTHUB_CLIENT_ERROR;
+ }
+ else
+ {
+ MESSAGE_DISPOSITION_CONTEXT* tc = (MESSAGE_DISPOSITION_CONTEXT*)(message_data->transportContext);
+ if (tc == NULL)
+ {
+ /* Codes_SRS_TRANSPORTMULTITHTTP_10_002: [If any of the messageData fields are NULL, IoTHubTransportHttp_SendMessageDisposition shall fail and return IOTHUB_CLIENT_ERROR.] */
+ LogError("invalid transport context data");
+ result = IOTHUB_CLIENT_ERROR;
+ }
+ else
+ {
+ if ((tc->handleData == NULL) || (tc->deviceData == NULL) || (tc->etagValue == NULL))
+ {
+ /* Codes_SRS_TRANSPORTMULTITHTTP_10_002: [If any of the messageData fields are NULL, IoTHubTransportHttp_SendMessageDisposition shall fail and return IOTHUB_CLIENT_ERROR.] */
+ LogError("invalid transport context data");
+ result = IOTHUB_CLIENT_ERROR;
+ }
+ else
+ {
+ if (abandonOrAcceptMessage(tc->handleData, tc->deviceData, tc->etagValue, disposition))
+ {
+ result = IOTHUB_CLIENT_OK;
+ }
+ else
+ {
+ /* Codes_SRS_TRANSPORTMULTITHTTP_10_003: [IoTHubTransportHttp_SendMessageDisposition shall fail and return IOTHUB_CLIENT_ERROR if the POST message fails, otherwise return IOTHUB_CLIENT_OK.] */
+ LogError("HTTP Transport layer failed to report %s disposition", ENUM_TO_STRING(IOTHUBMESSAGE_DISPOSITION_RESULT, disposition));
+ result = IOTHUB_CLIENT_ERROR;
+ }
+ }
+ free(tc->etagValue);
+ free(tc);
+ }
+ IoTHubMessage_Destroy(message_data->messageHandle);
+ }
+ free(message_data);
+ }
+ return result;
+}
+
+static MESSAGE_CALLBACK_INFO* MESSAGE_CALLBACK_INFO_Create(IOTHUB_MESSAGE_HANDLE received_message, HTTPTRANSPORT_HANDLE_DATA* handleData, HTTPTRANSPORT_PERDEVICE_DATA* deviceData, const char* etagValue)
+{
+ MESSAGE_CALLBACK_INFO* result = (MESSAGE_CALLBACK_INFO*)malloc(sizeof(MESSAGE_CALLBACK_INFO));
+ if (result == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_10_006: [If assembling the transport context fails, _DoWork shall "abandon" the message.] */
+ LogError("malloc failed");
+ }
+ else
+ {
+ MESSAGE_DISPOSITION_CONTEXT* tc = (MESSAGE_DISPOSITION_CONTEXT*)malloc(sizeof(MESSAGE_DISPOSITION_CONTEXT));
+ if (tc == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_10_006: [If assembling the transport context fails, _DoWork shall "abandon" the message.] */
+ LogError("malloc failed");
+ free(result);
+ result = NULL;
+ }
+ else
+ {
+ result->messageHandle = IoTHubMessage_Clone(received_message);
+ if (result->messageHandle == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_10_007: [If assembling a message clone, _DoWork shall "abandon" the message.]*/
+ LogError("IoTHubMessage_Clone failed");
+ free(tc);
+ free(result);
+ result = NULL;
+ }
+ else
+ {
+ if (mallocAndStrcpy_s(&tc->etagValue, etagValue) != 0)
+ {
+ LogError("mallocAndStrcpy_s failed");
+ free(tc);
+ free(result);
+ result = NULL;
+ }
+ else
+ {
+ tc->handleData = handleData;
+ tc->deviceData = deviceData;
+
+ result->transportContext = tc;
+ }
+ }
+ }
+ }
+ return result;
+}
+
+static void DoMessages(HTTPTRANSPORT_HANDLE_DATA* handleData, HTTPTRANSPORT_PERDEVICE_DATA* deviceData, IOTHUB_CLIENT_CORE_LL_HANDLE iotHubClientHandle)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_083: [ If device is not subscribed then _DoWork shall advance to the next action. ] */
+ if (deviceData->DoWork_PullMessage)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_123: [After client creation, the first GET shall be allowed no matter what the value of GetMinimumPollingTime.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_124: [If time is not available then all calls shall be treated as if they are the first one.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_122: [A GET request that happens earlier than GetMinimumPollingTime shall be ignored.] */
+ time_t timeNow = get_time(NULL);
+ bool isPollingAllowed = deviceData->isFirstPoll || (timeNow == (time_t)(-1)) || (get_difftime(timeNow, deviceData->lastPollTime) > handleData->getMinimumPollingTime);
+ if (isPollingAllowed)
+ {
+ HTTP_HEADERS_HANDLE responseHTTPHeaders = HTTPHeaders_Alloc();
+ if (responseHTTPHeaders == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_085: [If the call to HTTPAPIEX_SAS_ExecuteRequest did not executed successfully or building any part of the prerequisites of the call fails, then _DoWork shall advance to the next action in this description.] */
+ LogError("unable to HTTPHeaders_Alloc");
+ }
+ else
+ {
+ BUFFER_HANDLE responseContent = BUFFER_new();
+ if (responseContent == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_085: [If the call to HTTPAPIEX_SAS_ExecuteRequest did not executed successfully or building any part of the prerequisites of the call fails, then _DoWork shall advance to the next action in this description.] */
+ LogError("unable to BUFFER_new");
+ }
+ else
+ {
+ unsigned int statusCode = 0;
+ HTTPAPIEX_RESULT r;
+ if (deviceData->deviceSasToken != NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_03_001: [if a deviceSasToken exists, HTTPHeaders_ReplaceHeaderNameValuePair shall be invoked with "Authorization" as its second argument and STRING_c_str (deviceSasToken) as its third argument.]*/
+ if (HTTPHeaders_ReplaceHeaderNameValuePair(deviceData->messageHTTPrequestHeaders, "Authorization", STRING_c_str(deviceData->deviceSasToken)) != HTTP_HEADERS_OK)
+ {
+ r = HTTPAPIEX_ERROR;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_03_002: [If the result of the invocation of HTTPHeaders_ReplaceHeaderNameValuePair is NOT HTTP_HEADERS_OK then fallthrough.]*/
+ LogError("Unable to replace the old SAS Token.");
+ }
+ else if ((r = HTTPAPIEX_ExecuteRequest(
+ handleData->httpApiExHandle,
+ HTTPAPI_REQUEST_GET, /*requestType: GET*/
+ STRING_c_str(deviceData->messageHTTPrelativePath), /*relativePath: the message HTTP relative path*/
+ deviceData->messageHTTPrequestHeaders, /*requestHttpHeadersHandle: message HTTP request headers created by _Create*/
+ NULL, /*requestContent: NULL*/
+ &statusCode, /*statusCode: a pointer to unsigned int which shall be later examined*/
+ responseHTTPHeaders, /*responseHeadearsHandle: a new instance of HTTP headers*/
+ responseContent /*responseContent: a new instance of buffer*/
+ )) != HTTPAPIEX_OK)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_085: [If the call to HTTPAPIEX_SAS_ExecuteRequest did not executed successfully or building any part of the prerequisites of the call fails, then _DoWork shall advance to the next action in this description.] */
+ LogError("Unable to HTTPAPIEX_ExecuteRequest.");
+ }
+ }
+
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_084: [Otherwise, IoTHubTransportHttp_DoWork shall call HTTPAPIEX_SAS_ExecuteRequest passing the following parameters
+ requestType: GET
+ relativePath: the message HTTP relative path
+ requestHttpHeadersHandle: message HTTP request headers created by _Create
+ requestContent: NULL
+ statusCode: a pointer to unsigned int which shall be later examined
+ responseHeadearsHandle: a new instance of HTTP headers
+ responseContent: a new instance of buffer]
+ */
+ else if ((r = HTTPAPIEX_SAS_ExecuteRequest(
+ deviceData->sasObject,
+ handleData->httpApiExHandle,
+ HTTPAPI_REQUEST_GET, /*requestType: GET*/
+ STRING_c_str(deviceData->messageHTTPrelativePath), /*relativePath: the message HTTP relative path*/
+ deviceData->messageHTTPrequestHeaders, /*requestHttpHeadersHandle: message HTTP request headers created by _Create*/
+ NULL, /*requestContent: NULL*/
+ &statusCode, /*statusCode: a pointer to unsigned int which shall be later examined*/
+ responseHTTPHeaders, /*responseHeadearsHandle: a new instance of HTTP headers*/
+ responseContent /*responseContent: a new instance of buffer*/
+ )) != HTTPAPIEX_OK)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_085: [If the call to HTTPAPIEX_SAS_ExecuteRequest did not executed successfully or building any part of the prerequisites of the call fails, then _DoWork shall advance to the next action in this description.] */
+ LogError("unable to HTTPAPIEX_SAS_ExecuteRequest");
+ }
+ if (r == HTTPAPIEX_OK)
+ {
+ /*HTTP dialogue was succesfull*/
+ if (timeNow == (time_t)(-1))
+ {
+ deviceData->isFirstPoll = true;
+ }
+ else
+ {
+ deviceData->isFirstPoll = false;
+ deviceData->lastPollTime = timeNow;
+ }
+ if (statusCode == 204)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_086: [If the HTTPAPIEX_SAS_ExecuteRequest executed successfully then status code shall be examined. Any status code different than 200 causes _DoWork to advance to the next action.] */
+ /*this is an expected status code, means "no commands", but logging that creates panic*/
+
+ /*do nothing, advance to next action*/
+ }
+ else if (statusCode != 200)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_086: [If the HTTPAPIEX_SAS_ExecuteRequest executed successfully then status code shall be examined. Any status code different than 200 causes _DoWork to advance to the next action.] */
+ LogError("expected status code was 200, but actually was received %u... moving on", statusCode);
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_087: [If status code is 200, then _DoWork shall make a copy of the value of the "ETag" http header.]*/
+ const char* etagValue = HTTPHeaders_FindHeaderValue(responseHTTPHeaders, "ETag");
+ if (etagValue == NULL)
+ {
+ LogError("unable to find a received header called \"E-Tag\"");
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_088: [If no such header is found or is invalid, then _DoWork shall advance to the next action.]*/
+ size_t etagsize = strlen(etagValue);
+ if (
+ (etagsize < 2) ||
+ (etagValue[0] != '"') ||
+ (etagValue[etagsize - 1] != '"')
+ )
+ {
+ LogError("ETag is not a valid quoted string");
+ }
+ else
+ {
+ const unsigned char* resp_content;
+ size_t resp_len;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_089: [_DoWork shall assemble an IOTHUBMESSAGE_HANDLE from the received HTTP content (using the responseContent buffer).] */
+ resp_content = BUFFER_u_char(responseContent);
+ resp_len = BUFFER_length(responseContent);
+ IOTHUB_MESSAGE_HANDLE receivedMessage = IoTHubMessage_CreateFromByteArray(resp_content, resp_len);
+ if (receivedMessage == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_092: [If assembling the message fails in any way, then _DoWork shall "abandon" the message.]*/
+ LogError("unable to IoTHubMessage_CreateFromByteArray, trying to abandon the message... ");
+ if (!abandonOrAcceptMessage(handleData, deviceData, etagValue, IOTHUBMESSAGE_ABANDONED))
+ {
+ LogError("HTTP Transport layer failed to report ABANDON disposition");
+ }
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_090: [All the HTTP headers of the form iothub-app-name:somecontent shall be transformed in message properties {name, somecontent}.]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_091: [The HTTP header of iothub-messageid shall be set in the MessageId.]*/
+ size_t nHeaders;
+ if (HTTPHeaders_GetHeaderCount(responseHTTPHeaders, &nHeaders) != HTTP_HEADERS_OK)
+ {
+ LogError("unable to get the count of HTTP headers");
+ if (!abandonOrAcceptMessage(handleData, deviceData, etagValue, IOTHUBMESSAGE_ABANDONED))
+ {
+ LogError("HTTP Transport layer failed to report ABANDON disposition");
+ }
+ }
+ else
+ {
+ size_t i;
+ MAP_HANDLE properties = (nHeaders > 0) ? IoTHubMessage_Properties(receivedMessage) : NULL;
+ for (i = 0; i < nHeaders; i++)
+ {
+ char* completeHeader;
+ if (HTTPHeaders_GetHeader(responseHTTPHeaders, i, &completeHeader) != HTTP_HEADERS_OK)
+ {
+ break;
+ }
+ else
+ {
+ if (strncmp(IOTHUB_APP_PREFIX, completeHeader, strlen(IOTHUB_APP_PREFIX)) == 0)
+ {
+ /*looks like a property headers*/
+ /*there's a guaranteed ':' in the completeHeader, by HTTP_HEADERS module*/
+ char* whereIsColon = strchr(completeHeader, ':');
+ if (whereIsColon != NULL)
+ {
+ *whereIsColon = '\0'; /*cut it down*/
+ if (Map_AddOrUpdate(properties, completeHeader + strlen(IOTHUB_APP_PREFIX), whereIsColon + 2) != MAP_OK) /*whereIsColon+1 is a space because HTTPEHADERS outputs a ": " between name and value*/
+ {
+ free(completeHeader);
+ break;
+ }
+ }
+ }
+ else if (strncmp(IOTHUB_MESSAGE_ID, completeHeader, strlen(IOTHUB_MESSAGE_ID)) == 0)
+ {
+ char* whereIsColon = strchr(completeHeader, ':');
+ if (whereIsColon != NULL)
+ {
+ *whereIsColon = '\0'; /*cut it down*/
+ if (IoTHubMessage_SetMessageId(receivedMessage, whereIsColon + 2) != IOTHUB_MESSAGE_OK)
+ {
+ free(completeHeader);
+ break;
+ }
+ }
+ }
+ else if (strncmp(IOTHUB_CORRELATION_ID, completeHeader, strlen(IOTHUB_CORRELATION_ID)) == 0)
+ {
+ char* whereIsColon = strchr(completeHeader, ':');
+ if (whereIsColon != NULL)
+ {
+ *whereIsColon = '\0'; /*cut it down*/
+ if (IoTHubMessage_SetCorrelationId(receivedMessage, whereIsColon + 2) != IOTHUB_MESSAGE_OK)
+ {
+ free(completeHeader);
+ break;
+ }
+ }
+ }
+ // Codes_SRS_TRANSPORTMULTITHTTP_09_003: [ The HTTP header value of `ContentType` shall be set in the `IoTHubMessage_SetContentTypeSystemProperty`. ]
+ else if (strncmp(IOTHUB_CONTENT_TYPE_C2D, completeHeader, strlen(IOTHUB_CONTENT_TYPE_C2D)) == 0)
+ {
+ char* whereIsColon = strchr(completeHeader, ':');
+ if (whereIsColon != NULL)
+ {
+ *whereIsColon = '\0'; /*cut it down*/
+ if (IoTHubMessage_SetContentTypeSystemProperty(receivedMessage, whereIsColon + 2) != IOTHUB_MESSAGE_OK)
+ {
+ LogError("Failed setting IoTHubMessage content-type");
+ free(completeHeader);
+ break;
+ }
+ }
+ }
+ // Codes_SRS_TRANSPORTMULTITHTTP_09_004: [ The HTTP header value of `ContentEncoding` shall be set in the `IoTHub_SetContentEncoding`. ]
+ else if (strncmp(IOTHUB_CONTENT_ENCODING_C2D, completeHeader, strlen(IOTHUB_CONTENT_ENCODING_C2D)) == 0)
+ {
+ char* whereIsColon = strchr(completeHeader, ':');
+ if (whereIsColon != NULL)
+ {
+ *whereIsColon = '\0'; /*cut it down*/
+ if (IoTHubMessage_SetContentEncodingSystemProperty(receivedMessage, whereIsColon + 2) != IOTHUB_MESSAGE_OK)
+ {
+ LogError("Failed setting IoTHubMessage content-encoding");
+ free(completeHeader);
+ break;
+ }
+ }
+ }
+
+ free(completeHeader);
+ }
+ }
+
+ if (i < nHeaders)
+ {
+ if (!abandonOrAcceptMessage(handleData, deviceData, etagValue, IOTHUBMESSAGE_ABANDONED))
+ {
+ LogError("HTTP Transport layer failed to report ABANDON disposition");
+ }
+ }
+ else
+ {
+ MESSAGE_CALLBACK_INFO* messageData = MESSAGE_CALLBACK_INFO_Create(receivedMessage, handleData, deviceData, etagValue);
+ if (messageData == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_10_006: [If assembling the transport context fails, _DoWork shall "abandon" the message.] */
+ LogError("failed to assemble callback info");
+ if (!abandonOrAcceptMessage(handleData, deviceData, etagValue, IOTHUBMESSAGE_ABANDONED))
+ {
+ LogError("HTTP Transport layer failed to report ABANDON disposition");
+ }
+ }
+ else
+ {
+ bool abandon;
+ if (IoTHubClientCore_LL_MessageCallback(iotHubClientHandle, messageData))
+ {
+ abandon = false;
+ }
+ else
+ {
+ LogError("IoTHubClientCore_LL_MessageCallback failed");
+ abandon = true;
+ }
+
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_096: [If IoTHubClientCore_LL_MessageCallback returns false then _DoWork shall "abandon" the message.] */
+ if (abandon)
+ {
+ (void)IoTHubTransportHttp_SendMessageDisposition(messageData, IOTHUBMESSAGE_ABANDONED);
+ }
+ }
+ }
+ }
+ IoTHubMessage_Destroy(receivedMessage);
+ }
+ }
+ }
+ }
+ }
+ BUFFER_delete(responseContent);
+ }
+ HTTPHeaders_Free(responseHTTPHeaders);
+ }
+ }
+ else
+ {
+ /*isPollingAllowed is false... */
+ /*do nothing "shall be ignored*/
+ }
+ }
+}
+
+static IOTHUB_PROCESS_ITEM_RESULT IoTHubTransportHttp_ProcessItem(TRANSPORT_LL_HANDLE handle, IOTHUB_IDENTITY_TYPE item_type, IOTHUB_IDENTITY_INFO* iothub_item)
+{
+ (void)handle;
+ (void)item_type;
+ (void)iothub_item;
+ LogError("Currently Not Supported.");
+ return IOTHUB_PROCESS_ERROR;
+}
+
+static void IoTHubTransportHttp_DoWork(TRANSPORT_LL_HANDLE handle, IOTHUB_CLIENT_CORE_LL_HANDLE iotHubClientHandle)
+{
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_049: [ If handle is NULL, then IoTHubTransportHttp_DoWork shall do nothing. ]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_140: [ If iotHubClientHandle is NULL, then IoTHubTransportHttp_DoWork shall do nothing. ]*/
+
+ (void)iotHubClientHandle; // use the perDevice handle.
+ if (handle != NULL)
+ {
+ HTTPTRANSPORT_HANDLE_DATA* handleData = (HTTPTRANSPORT_HANDLE_DATA*)handle;
+ IOTHUB_DEVICE_HANDLE* listItem;
+ size_t deviceListSize = VECTOR_size(handleData->perDeviceList);
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_052: [ IoTHubTransportHttp_DoWork shall perform a round-robin loop through every deviceHandle in the transport device list, using the iotHubClientHandle field saved in the IOTHUB_DEVICE_HANDLE. ]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_050: [ IoTHubTransportHttp_DoWork shall call loop through the device list. ] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_051: [ IF the list is empty, then IoTHubTransportHttp_DoWork shall do nothing. ]*/
+ for (size_t i = 0; i < deviceListSize; i++)
+ {
+ listItem = (IOTHUB_DEVICE_HANDLE *)VECTOR_element(handleData->perDeviceList, i);
+ HTTPTRANSPORT_PERDEVICE_DATA* perDeviceItem = *(HTTPTRANSPORT_PERDEVICE_DATA**)(listItem);
+ DoEvent(handleData, perDeviceItem, perDeviceItem->iotHubClientHandle);
+ DoMessages(handleData, perDeviceItem, perDeviceItem->iotHubClientHandle);
+
+ }
+ }
+ else
+ {
+ LogError("Invalid Argument NULL call on DoWork.");
+ }
+}
+
+static IOTHUB_CLIENT_RESULT IoTHubTransportHttp_GetSendStatus(IOTHUB_DEVICE_HANDLE handle, IOTHUB_CLIENT_STATUS *iotHubClientStatus)
+{
+ IOTHUB_CLIENT_RESULT result;
+
+ if (handle == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_111: [ IoTHubTransportHttp_GetSendStatus shall return IOTHUB_CLIENT_INVALID_ARG if called with NULL parameter. ]*/
+ result = IOTHUB_CLIENT_INVALID_ARG;
+ LogError("Invalid handle to IoTHubClient HTTP transport instance.");
+ }
+ else if (iotHubClientStatus == NULL)
+ {
+ result = IOTHUB_CLIENT_INVALID_ARG;
+ LogError("Invalid pointer to output parameter IOTHUB_CLIENT_STATUS.");
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_138: [ IoTHubTransportHttp_GetSendStatus shall locate deviceHandle in the transport device list by calling list_find_if. ]*/
+ IOTHUB_DEVICE_HANDLE* listItem = get_perDeviceDataItem(handle);
+ if (listItem == NULL)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_139: [ If the device structure is not found, then this function shall fail and return with IOTHUB_CLIENT_INVALID_ARG. ]*/
+ result = IOTHUB_CLIENT_INVALID_ARG;
+ LogError("Device not found in transport list.");
+ }
+ else
+ {
+ HTTPTRANSPORT_PERDEVICE_DATA* deviceData = (HTTPTRANSPORT_PERDEVICE_DATA*)(*listItem);
+ /* Codes_SRS_TRANSPORTMULTITHTTP_17_113: [ IoTHubTransportHttp_GetSendStatus shall return IOTHUB_CLIENT_OK and status IOTHUB_CLIENT_SEND_STATUS_BUSY if there are currently event items to be sent or being sent. ] */
+ if (!DList_IsListEmpty(deviceData->waitingToSend))
+ {
+ *iotHubClientStatus = IOTHUB_CLIENT_SEND_STATUS_BUSY;
+ }
+ /* Codes_SRS_TRANSPORTMULTITHTTP_17_112: [ IoTHubTransportHttp_GetSendStatus shall return IOTHUB_CLIENT_OK and status IOTHUB_CLIENT_SEND_STATUS_IDLE if there are currently no event items to be sent or being sent. ] */
+ else
+ {
+ *iotHubClientStatus = IOTHUB_CLIENT_SEND_STATUS_IDLE;
+ }
+ result = IOTHUB_CLIENT_OK;
+ }
+ }
+
+ return result;
+}
+
+static IOTHUB_CLIENT_RESULT IoTHubTransportHttp_SetOption(TRANSPORT_LL_HANDLE handle, const char* option, const void* value)
+{
+ IOTHUB_CLIENT_RESULT result;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_114: [If handle parameter is NULL then IoTHubTransportHttp_SetOption shall return IOTHUB_CLIENT_INVALID_ARG.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_115: [If option parameter is NULL then IoTHubTransportHttp_SetOption shall return IOTHUB_CLIENT_INVALID_ARG.] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_116: [If value parameter is NULL then IoTHubTransportHttp_SetOption shall return IOTHUB_CLIENT_INVALID_ARG.] */
+ if (
+ (handle == NULL) ||
+ (option == NULL) ||
+ (value == NULL)
+ )
+ {
+ result = IOTHUB_CLIENT_INVALID_ARG;
+ LogError("invalid parameter (NULL) passed to IoTHubTransportHttp_SetOption");
+ }
+ else
+ {
+ HTTPTRANSPORT_HANDLE_DATA* handleData = (HTTPTRANSPORT_HANDLE_DATA*)handle;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_120: ["Batching"] */
+ if (strcmp(OPTION_BATCHING, option) == 0)
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_117: [If optionName is an option handled by IoTHubTransportHttp then it shall be set.] */
+ handleData->doBatchedTransfers = *(bool*)value;
+ result = IOTHUB_CLIENT_OK;
+ }
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_121: ["MinimumPollingTime"] */
+ else if (strcmp(OPTION_MIN_POLLING_TIME, option) == 0)
+ {
+ handleData->getMinimumPollingTime = *(unsigned int*)value;
+ result = IOTHUB_CLIENT_OK;
+ }
+ else
+ {
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_126: [ "TrustedCerts"] */
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_127: [ NULL shall be allowed. ]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_129: [ This option shall passed down to the lower layer by calling HTTPAPIEX_SetOption. ]*/
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_118: [Otherwise, IoTHubTransport_Http shall call HTTPAPIEX_SetOption with the same parameters and return the translated code.] */
+ HTTPAPIEX_RESULT HTTPAPIEX_result = HTTPAPIEX_SetOption(handleData->httpApiExHandle, option, value);
+ /*Codes_SRS_TRANSPORTMULTITHTTP_17_119: [The following table translates HTTPAPIEX return codes to IOTHUB_CLIENT_RESULT return codes:] */
+ if (HTTPAPIEX_result == HTTPAPIEX_OK)
+ {
+ result = IOTHUB_CLIENT_OK;
+ }
+ else if (HTTPAPIEX_result == HTTPAPIEX_INVALID_ARG)
+ {
+ result = IOTHUB_CLIENT_INVALID_ARG;
+ LogError("HTTPAPIEX_SetOption failed");
+ }
+ else
+ {
+ result = IOTHUB_CLIENT_ERROR;
+ LogError("HTTPAPIEX_SetOption failed");
+ }
+ }
+ }
+ return result;
+}
+
+static STRING_HANDLE IoTHubTransportHttp_GetHostname(TRANSPORT_LL_HANDLE handle)
+{
+ STRING_HANDLE result;
+ /*Codes_SRS_TRANSPORTMULTITHTTP_02_001: [ If handle is NULL then IoTHubTransportHttp_GetHostname shall fail and return NULL. ]*/
+ if (handle == NULL)
+ {
+ LogError("invalid parameter handle=%p", handle);
+ result = NULL;
+ }
+ /*Codes_SRS_TRANSPORTMULTITHTTP_02_002: [ Otherwise IoTHubTransportHttp_GetHostname shall return a non-NULL STRING_HANDLE containing the hostname. ]*/
+ else if ((result = STRING_clone(((HTTPTRANSPORT_HANDLE_DATA*)(handle))->hostName)) == NULL)
+ {
+ LogError("Cannot provide the target host name (STRING_clone failed).");
+ }
+
+ return result;
+}
+
+static int IoTHubTransportHttp_SetRetryPolicy(TRANSPORT_LL_HANDLE handle, IOTHUB_CLIENT_RETRY_POLICY retryPolicy, size_t retryTimeoutLimitInSeconds)
+{
+ int result;
+ (void)handle;
+ (void)retryPolicy;
+ (void)retryTimeoutLimitInSeconds;
+
+ /* Retry Policy is not currently not available for HTTP */
+
+ result = 0;
+ return result;
+}
+
+static int IotHubTransportHttp_Subscribe_InputQueue(IOTHUB_DEVICE_HANDLE handle)
+{
+ (void)handle;
+ LogError("HTTP does not support input queues");
+ return __FAILURE__;
+}
+
+static void IotHubTransportHttp_Unsubscribe_InputQueue(IOTHUB_DEVICE_HANDLE handle)
+{
+ (void)handle;
+ LogError("HTTP does not support input queues");
+}
+
+
+/*Codes_SRS_TRANSPORTMULTITHTTP_17_125: [This function shall return a pointer to a structure of type TRANSPORT_PROVIDER having the following values for its fields:] */
+static TRANSPORT_PROVIDER thisTransportProvider =
+{
+ IoTHubTransportHttp_SendMessageDisposition, /*pfIotHubTransport_SendMessageDisposition IoTHubTransport_SendMessageDisposition;*/
+ IoTHubTransportHttp_Subscribe_DeviceMethod, /*pfIoTHubTransport_Subscribe_DeviceMethod IoTHubTransport_Subscribe_DeviceMethod;*/
+ IoTHubTransportHttp_Unsubscribe_DeviceMethod, /*pfIoTHubTransport_Unsubscribe_DeviceMethod IoTHubTransport_Unsubscribe_DeviceMethod;*/
+ IoTHubTransportHttp_DeviceMethod_Response, /*pfIoTHubTransport_DeviceMethod_Response IoTHubTransport_DeviceMethod_Response;*/
+ IoTHubTransportHttp_Subscribe_DeviceTwin, /*pfIoTHubTransport_Subscribe_DeviceTwin IoTHubTransport_Subscribe_DeviceTwin;*/
+ IoTHubTransportHttp_Unsubscribe_DeviceTwin, /*pfIoTHubTransport_Unsubscribe_DeviceTwin IoTHubTransport_Unsubscribe_DeviceTwin;*/
+ IoTHubTransportHttp_ProcessItem, /*pfIoTHubTransport_ProcessItem IoTHubTransport_ProcessItem;*/
+ IoTHubTransportHttp_GetHostname, /*pfIoTHubTransport_GetHostname IoTHubTransport_GetHostname;*/
+ IoTHubTransportHttp_SetOption, /*pfIoTHubTransport_SetOption IoTHubTransport_SetOption;*/
+ IoTHubTransportHttp_Create, /*pfIoTHubTransport_Create IoTHubTransport_Create;*/
+ IoTHubTransportHttp_Destroy, /*pfIoTHubTransport_Destroy IoTHubTransport_Destroy;*/
+ IoTHubTransportHttp_Register, /*pfIotHubTransport_Register IoTHubTransport_Register;*/
+ IoTHubTransportHttp_Unregister, /*pfIotHubTransport_Unregister IoTHubTransport_Unegister;*/
+ IoTHubTransportHttp_Subscribe, /*pfIoTHubTransport_Subscribe IoTHubTransport_Subscribe;*/
+ IoTHubTransportHttp_Unsubscribe, /*pfIoTHubTransport_Unsubscribe IoTHubTransport_Unsubscribe;*/
+ IoTHubTransportHttp_DoWork, /*pfIoTHubTransport_DoWork IoTHubTransport_DoWork;*/
+ IoTHubTransportHttp_SetRetryPolicy, /*pfIoTHubTransport_DoWork IoTHubTransport_SetRetryPolicy;*/
+ IoTHubTransportHttp_GetSendStatus, /*pfIoTHubTransport_GetSendStatus IoTHubTransport_GetSendStatus;*/
+ IotHubTransportHttp_Subscribe_InputQueue, /*pfIoTHubTransport_Subscribe_InputQueue IoTHubTransport_Subscribe_InputQueue; */
+ IotHubTransportHttp_Unsubscribe_InputQueue /*pfIoTHubTransport_Unsubscribe_InputQueue IoTHubTransport_Unsubscribe_InputQueue; */
+};
+
+const TRANSPORT_PROVIDER* HTTP_Protocol(void)
+{
+ return &thisTransportProvider;
+}