Package versions:

Apt/Debian:
azure-iot-sdk-c - 0.2.0.0-23xenial
azure-iot-sdk-c - 0.2.0.0-16bionic
azure-iot-sdk-c - 0.2.0-23trusty

VcPkg:
Port: azure-iot-sdk-c
Version: 2019-10-07.1

C Device SDK

• Added Azure Security Center Client
• Added missing srand() to modules that use rand()
• Added compiler support to C18
• Changed the fail reason from DEVICE_DISABLED to BAD_CREDENTIAL if the key or device-id is not correct in connection status callback
• Fixed certGen.sh for devices
• Forced single initialization of HTTPAPIEX for upload to blob
• Fixed product info bug in AMQP transport (for Device Twin)
• Improved MQTT transport by always deleting xio in cleanup functions
• Exposed option for setting connection retry interval rate in AMQP and MQTT transports
• Updated code to use macro-utils new MU_DEFINE_ENUM_STRINGS
• Added cmake install directives for libmsr_riot.a
• Fixed check for number of failed reconnection attempts in MQTT transport
• Removed hardcoded key name usage from iothub_messaging_ll.c (allows to use non "iothubowner" IoT Hub strings with service client)
• Added connection status callback invokation on MQTT ping fail
• Fixed compilation warnings (MSVC)
• Added new build verification jobs (Bearssl)
• Added/improved tests
• Added improvements to documentation in general
• Changed reported properties and send event callback functions to store context per send, not per iothub_client handle

C Shared Utility

• Added async DNS resolution using c-ares
• Fixed critical socketio_win32 bug where socketio_send() would drop packets if send() returns SOCKET_ERROR and WSAEWOULDBLOCK
• Fixed critical socketio_berkeley bug where socketio_send() would drop packets if send() returns -1 and errno=EAGAIN
• Added better logging of the lost etw messages
• Added constbuffer_array_batcher
• Fixed check for lock in openssl
• Added mbedtls support for httpapi curl
• Added C18 compiler support.
• Updated mbedtls to not send multiple complete messages for each send
• Added BearSSL TLS adapter layer
• Fixed mbed tls not to close the socket until the TLS layer notifies the peer of closure
• Added constbufferarray_create_with_move_memory tests and code

uAMQP

• Updated open complete to include a callback for error
• Fixed open complete to not execute callback
• Fixed error message on failed send
• Fixed bug where Pending close was not getting turned off
• Changed function to close the xio from dowork if needed

C Device SDK

• Exposed IoT Hub Client option OPTION_DO_WORK_FREQUENCY_IN_MS
• Capped the maximum load of make build to 80% of number of CORES (Linux)
• Fixed Base32/64 related calls in Unit and E2E tests (by Arthur Ma)
• Fixed type of compileOption_C, compileOption_CXX, linkerOption in cmake files
• Fixed AMQP transport to apply Product Info if modified after client creation
• Internal build process improvements
• Added tool for Uart interface control, applied to raspberry pi gated tests
• Improved stability of Longhaul tests for Linux and Windows

C Device SDK

• Fix sas handling logic error (GitHub PR #972)
• Fixed vcpkg for building using as toolchain (adds support for Linux builds using vcpkg)
• Add the ability to use mbedTLS as tls layer for all platforms (GitHub PR #862)
• Fixed potential memory leak bug in iothub_client_core_ll.c
• Added internal support for SQM info in Windows platform (*_GetSupportedPlatformInfo)
• Updated code to consume azure-c-shared-utility's renamed Azure_Base32
• Added gate build to verify building with installed dependencies (re vcpkg deployment)
• Implemented Provisioning Client custom payload (GitHub PR #984)
• Added fix for GitHub issue #775 (twin/amqp not resubscribed after reconnection)
• Added Device Twin service fault injection tests over AMQP
• Reorganized code and added two separate submodules to the project (umock-c and azure-macro-utils-c)

C Shared Utility

• Renamed base32/64 modules to azure_base32/64
• Added support for gathering Windows SQM;
• Added general fixes for building using installed dependencies;
• Reorganized code and added two separate submodules to the project (umock-c and azure-macro-utils-c)

uAMQP

• Added general fixes for building using installed dependencies;
• Reorganized code and added two separate submodules to the project (umock-c and azure-macro-utils-c)

uMQTT

• Added general fixes for building using installed dependencies;
• Reorganized code and added two separate submodules to the project (umock-c and azure-macro-utils-c)

C Device SDK

• Refactored iothubtransport_amqp_device module to remove name conflicts (GH #925)
• Added macro-utils repo as submodule (internal use only)
• Merged name changes from macro-utils (internal use only)

C Shared Utility

• Added SQM ID to platform_get_platform_info string
• Added macro-utils repo as submodule (internal use only)
• Merged name changes from macro-utils (internal use only)

uMQTT

• Added macro-utils repo as submodule (internal use only)
• Merged name changes from macro-utils (internal use only)

uAMQP

• Added macro-utils repo as submodule (internal use only)
• Merged name changes from macro-utils (internal use only)

C Device SDK

• Refactored iothubtransport_amqp_device module to remove name conflicts (GH #925)
• Added macro-utils repo as submodule (internal use only)
• Merged name changes from macro-utils (internal use only)

C Shared Utility

• Added SQM ID to platform_get_platform_info string
• Added macro-utils repo as submodule (internal use only)
• Merged name changes from macro-utils (internal use only)

uMQTT

• Added macro-utils repo as submodule (internal use only)
• Merged name changes from macro-utils (internal use only)

uAMQP

• Added macro-utils repo as submodule (internal use only)
• Merged name changes from macro-utils (internal use only)

C Device SDK

Update run_c_sdk_on_constrained_device.md (#890)
Remove 0xb character from comments (#880)
Rename buffer to azure buffer and update repos (#894)
Misc. Azure Dev Ops and Github template improvements
Enabled Edge E2E tests in the gate
Removed invalid character from comment on tpm file (#909)

C Shared Utility

Renamed Base64 utilities to avoid name conflicts

uMQTT

Moving the NULLing out of the transport into the close function

C Device SDK (public preview)

• Added support on Azure IoT C SDK for public-preview of Distributed Tracing.
• Added support on Azure IoT C SDK for public-preview of new telemetry APIs.

C Device SDK

Checking that the sas token is not set to an invalid value (#857)
Adding provisioning documents (#854)
add sas support for service_client (#800)
fix mqtt connection log message (#853)
typo fix in dps samples (#836)
MQTT set connection callback for Retry Expired
Document correction for interval time of retry policies
Update http in preparation for code changes (#843)
Ensure mqtt does not refresh sas token when using x509 (#846)
add changes for retry expired callback
Setting symm key to be excluded in custom HSM (#844)
Update AMQP transport twin msgr to use CONSTBUFFER_IncRef/CONSTBUFFER_DecRef

C Device SDK

Add GetTwinAsync function to C SDK
Update flags in provisioning custom hsm and http (#773)
Edge certs from env (#759)
Fixing issue #785 by making a local variable a part of the handle (#787)
ftell return type fix (#788)
Removed unused constant (#745)
[Doc.] - Added notes on using low level samples (#653)
Adding a Resource document to outline the current release (#802)
Remove redundant values (#778)
Rollback the change of the include path for iothub_auth_client.h (#805)
Update submodules and remove %zu (#808)
Fixing CONNACK failure on 32bit device (#816)
GetTwinAsync API fixes (#823)
Removing windows ce build for the repo (#824)
Setoption sleep timeout (#813)
Moving Sas lifetime into iothub_client_core from the transports. (#825)
Azure DevOps Testing Results (#830)
Fix amqp DPS reinitialize sas token (#828)
patch yaml to run on succeededorfailed (#833)
Remove redundant '..' in docs (#832)
Update readme for privacy disclaimer (#827)
Fix amqp sasl plain to route symm key messages (#834)

Shared Utility

Remove backticks from .c and .h files
Add ConstBuffer_CreateWithCustomFree
Add devdoc for constbuffer_array_append
Add constbuffer_array_append implementation
Add overflow check to constbuffer_array_append
Change constbuffer_array_append to more generalized constbuffer_array
Fix unittest memory leaks and compiler errors for older C compilers
remove \r\n (#250)
Make gballoc_XXX mockable
Add UUID_FORMAT_VALUES_OR_NULL to print UUID_T's that may be NULL
Replace %zu with %lu for mbed builds (#254)
Fix UUID_FORMAT_VALUES_OR_NULL to wrap uuid in parentheses
Fixed location of stnp.h for ESP32 Support (#184)
remove extraneous #else (#255)
Move memory_data to C shared utility
add sas support without changing APIs (#252)

uMQTT

changing mqtt %zu to %ld for mbed (#33)

C Device SDK (public preview)

• Added support on Azure IoT C SDK for public-preview of Device Streaming.

vcpkg:
The Azure IoT C SDK vcpkg can be accessed through https://github.com/Microsoft/vcpkg.
Please follow the initial instructions for deploying the azure-iot-sdk-c vcpkg. To access the public-preview features please use the following syntax instead:

vcpkg install azure-iot-sdk-c[public-preview] 

and, if you wish to export the nuget packages,

vcpkg export azure-iot-sdk-c[public-preview] --nuget

apt-get:
Installing the apt packages for Azure IoT C SDK public preview can be achieved following these instructions, with the difference that the preview ppa address should be used:

sudo add-apt-repository ppa:aziotsdklinux/azureiot-preview

C Device SDK

• Vcpkg cleanup (#767)
  • Add vcpkg setup instructions
  • Update docs
  • windowsce project removal and add vcpkg message in build failure warning
• Initial upload to blob support for provisioning
• Update certificate script to remove the password (#752)
• Fix samples to link libraries in proper order
• Fix issue when using e2e test with edge modules and not using provisioning client; there was an compiler failure
• Fix for SLNativeRules defects
• Adding DPS Symmetric Key ability to Iothub Provisioning client

Shared Utility

• Add verification of trusted certs in memory to Windows
• Support UNIX domain sockets in Windows RS5
• Update token_string to fixed possible memory leak in failure case

C Device SDK

• Update SDK sample to prepare for vcpkg use
• Remove WoSign certificate from the trusted cert
• Update edge client unittests
• Fixing github issue #688 dealing with ack msg timeout
• Fixing bugs with having internal as a included directory
• github issue #394
• Update Azure Sphere patches changes for sdk
• github issue #663 Remove CRLF from unittest file
• Enable WolfSSL to send trusted certificate when running E2E tests
• Fix custom hsm bug that caused invalid header
• Update MQTT transport to be more efficient
• github issue fix for http_proxy struct
• Fix mqtt disconnect so it's triggered in DoWork
• Fix handle passed to unsub device method function in client core LL

Shared Utility

• Addressed CR comments for constbuffer_array
• Reordered waiting_thread_count++ and unlock so that ++ happen under the lock, removed interlocked functions as all touches are now under the lock. Also fixed error checking in Condition_Init as it related to CreateEvent, which should be compared against NULL to detect a failure.
• Update rules to decay to C99 if C11 is not there
• Fix candidate for MBED size_t build failure
• Add support for flexible arrays in refcount
• Use stub for HTTP proxy when SocketIO isnt enabled

uMQTT

• ACR Add _getTopicLevels to mqttmessage
• Add extra error checking on incoming PUBLISH
• Update mqtt_message to enable code sharing
• Adding enhancements to the repo for size and memory concerns

Versions

Nuget: 1.2.10
apt-get Xenial: 0.2.0.0-12xenial
apt-get Trusty: 0.2.0.0-12trusty
apt-get Bionic: 0.2.0.0-5bionic

C Device SDK

• Implemented dps symmetric key feature
• Bug fix for HTTP Error Status
• #628 Fixed integer overflow with message timeouts
• #639 Fixed incorrect comment
• Updated parson
• Fixed DPS includes issue

uMQTT

• Fix %zu format identifier

uAMQP

• Moved message cleanup to sender close

Shared Utility

• Added new, simplified string tokenizer
• Added tests for mbedtls
• Added head method for http compact client
• Added handling of custom headers on uws_client UPGRADE request
• Added Websocket URL parser
• (https://github.com/Azure/azure-c-shared-utility/issues/187) support for building with VC++ 9.0
• Fixed http compact cert no copy
• Optimized Url Encoding
• Updated mbed file to handle the failure from mbed
• Added singlylinkedlist_add_head functionality
• Fixed return value error found on iOS
• Test improvements
• Fixed const correctness in UUID_to_string
• Fixed bug in cmake usePermissiveRulesForSamplesAndTests function to make more permissive

Versions

Nuget: 1.2.9
apt-get Xenial: 0.2.0.0-11xenial
apt-get Trusty: 0.2.0.0-11trusty
apt-get Bionic: 0.2.0.0-4bionic

C Device SDK

• Update security issue detailed in CVE-2018-8479
• Fix twin subscription timing issue
• Allow empty message to IoTHub in MQTT
• Remove strcpy_s from code for different compilers
• Enabled trusted certificates for service client messages
• Issue github issue #607 Sending MQTT DISCONNECT Packet
• Fixed Undefined allocation warnings
• Fixing multiple issues discovered with clang static analyzer
• Only enable curl_verbose if caller indicated
• Fix Transient error bug in provisioning
• Fix github issue #587: avoid new GCC 8.2 warning (s/strncpy/memcpy/)
• Fix for DPS client throttling mechanism
• Revert "Include header files outside the extern "C""
• Handle error mapping for all cases
• #564 DPS status not reflecting correct behavior
• Removed IoTHubModuleClient_ModuleMethodResponse and assoc. LL function
• Remove vestigal cmake options
• Export protocol functions in dynamic build

uMQTT

• Fix possible failure in PING
• Issue #21 Compilation problem for mqtt_client.h in cpp

uAMQP

• Add cast for %zu->%lu format conversion
• Move indication of error'd messages in message_sender to work around bad consumers that would pull the rug from under message_sender
• Include header files outside the extern "C" (fix for GitHub issue #577 in azure-iot-sdk-c)
• Fix github issue #507 Unchecked values causing potentially uninitialized variables

Shared Utility

• Fixed a potential bug with copying memory
• Update dynamic build to have the correct name
• New enum must come after existing
• Add PRI_UUID print format specifier
• Fixes for tls io modules
• Save error code lest it be overwritten prior to log
• Suppress warning C4244 for narrowing a wchar_t into a char
• Rename UUID type to UUID_T to avoid collisions with Windows types
• Add missing logging macro for non-Microsoft compilers

Versions

Nuget: 1.2.8
Apt-get Xenial: 0.2.0.0-8xenial
Apt-get Trusty: 0.2.0-8trusty

C Device SDK

• Added MethodInvoke to Modules
• Added Modules support
• Added Device Capabilities for Provisioning Service Client
• Fixed warning suppressions for Ubuntu 18.04
• Update Samples to use new Device Client module (renamed from iothub_client)
• Added Connection and Messaging Reliability documentation
• Fix to resend on http & mqtt DPS transient error
• Added cleaner error messages and other minor fixes when using OpenSSL using VCPKG
• Made explicit cast on agenttypesystem.c (Serializer) (github issue #556)
• Moved OPTION_EVENT_SEND_TIMEOUT_SECS from amqp_common.h to client_options.h (github issue 552)
• Fix powershell scripts for generation of Edge device certificates

uAMQP

• Fixed AV when using multiple links and sessions with link redirect
• Fixed Log chunk memory leak in message sender

Shared Utility

• Updated wolfssl to not have an unprotected loop
• Added Fix for Wolfssl updates

Versions

Nuget: 1.2.5
Apt-get Xenial: 0.2.0.0-5xenial
Apt-get Trusty: 0.2.0-5trusty

C Device SDK

• Added IoTHub_Init/DeInit to replace platform_init/deinit
• Added Set/Get Property on Iothub Message
• Reorganized iothub client headers into public and internal
• Added iothub_client_device_twin_and_methods_sample to parse Twin without Serializer
• Replaced Twin and Methods samples with iothub_client_device_twin_and_methods_sample
• Allow externally defined heap functions (cmake flag GB_USE_CUSTOM_HEAP)
• Moved IothubClient handle to IothubDeviceClient in e2e tests
• Fix for Python GitHub issue #83: support Python 3.6 when building SDK
• Fix E2E diagnostics to use portable string format (for 32/64 bit processors)
• Update CACertificateOverview.md documentation to clarify proof of possession step
• Update cmake to include installing parson when using installed components

uAMQP

• Allow NULL source and target on link ATTACH frames that are received
• Add missed set of DETACHING when a detach performative is received
• Fix place for reading closed flag of detach frame
• Add support for redirection
• Allow externally defined custom heap functions

uMQTT

• Allow externally defined custom heap functions

uHTTP

• Add set_options() function
• Allow externally defined custom heap functions
• Made http headers case insensitive

uTPM

• Added endpoint for tpm emulator
• Allow externally defined custom heap functions

Shared Utility

• Added unix domain sockets to socketio_berkeley (sys/un.h)
• Added another flag to enable the clang build
• Checking for NULL before closing CFReadStreamClose
• Added detection of host closure on socket read
• Allow use of externally defined custom heap functions

Versions

Nuget: 1.2.4
Apt-get Xenial: 0.2.0.0-4xenial
Apt-get Trusty: 0.2.0-4trusty

C Device SDK

• Update CMakeList.txt files to use multiple def files
• Fixed Provisioning log trace
• Add constrained device document detailing SDK
• Adding Updated Third Party notice
• cmake: Install parson library for upload to blob feature
• If client is not connected (connecting times out) mqtt_client_dowork should not be called
• Fixed CMakeLists to enforce C99

uAMQP

• Fix amqp_definitions header not building properly in C++

uMQTT

• Fixed segfault with variable that was not set to NULL

Shared Utility

• Clear out variable structure
• Move tlsio items to adapters
• Openssl errors logged as errors, not info level

Versions

Nuget: 1.2.3
Apt-get Xenial: 0.2.0.0-3xenial
Apt-get Trusty: 0.2.0-3trusty

C Device SDK

• Added automatic URL Encode/Decode option for MQTT
• Set telemetry as the default iOS sample
• Fixed shared objects
• Fixed build failures for samples on Windows with OpenSSL
• Added Custom HSM example along with docs
• Fixed mbed build

C Service SDK

• Added support for iOS

Shared Utility

• Added URLDecode and URLDecodeString functions
• Fixed a memory leak in urlencode.h unittests

Documentation

• Fixed broken links in Provisioning Service Client sample documentation

Versions

Nuget: 1.2.2
Apt-get Xenial: 0.2.0.0-2xenial
Apt-get Trusty: 0.2.0-2trusty

C Device SDK

• MQTT_WS http over proxy reconnection fix (GitHub #264)
• Fix return value that was not being set in provisioning client
• Turn the native e2e test on for osx
• Fix the apt-get sample to work with new package
• Improve/clean IoTHub Client samples
• Add new iothub client sample for c2d (iothub_ll_c2d_sample)
• Added OpenSSL compatibility for provisioning client samples
• Fix upload to blob Visual Studio projects

Shared Utility

• Set default WinHttp timeout to 60s
• Remove unused httpap_wininet.c
• Update apple fix for openssl
• Fixed error handling issue in the xio wsio and the x509 layers
• Fixed curl use of x509 function
• Add missing functions to dlls .def file

Documentation

• Update devbox setup doc with instructions for curl on MacOS
• Fix codeblock in iothubtransport_amqp_common_requirements.md

Versions

Nuget: 1.2.1
Apt-get Xenial: 0.2.0.0-1xenial
Apt-get Trusty: 0.2.0-1trusty

C Device SDK

• Updating provisioning regex for cmake
• Wrap definitions in extern "C" where it was missed (#410)
• Define enum strings to save everyone else from needing to do so (#411)
• Use strict XCode build rules
• Update dps e2e tests
• Add DPS service bulk operation & query

Shared Utility

• Update wolfssl with device id
• Ensure device Id doesn't run on mbed
• Remove device for mbed builds
• Make XCode warnings with CMake match iOS builds
• fix xcode warning
• Fix a double free in tlsio_appleios
• Copy hostname and port from socketio to tlsio config

Documentation

• Rewrite large parts of C SDK readme.md and fix broken links
• Use lower case naming in certificate sample (#405)
• Update support links with newest contact info

uMQTT

• Add will message fix for conn messages
• Use strict XCode build rules

uAQMP

• Add LogError in link.c
• Use strict XCode warnings
• Add AMQP_MANAGEMENT_STATE_CLOSING; do not raise error on on_message_sender_state_changed for CLOSING/IDLE states", 2018-03-15)