'AzureIoTHubClient' does not name a type

[austnalio]

OS and version used: Windows 10 1803 & Raspberry Pi Jessie
Arduino IDE Version 1.8.5
Azure IoT Hub Library 1.0.45 (also tried 1.0.40 and 1.0.17)
GitHub Master Branch (As of 7/6/2018)
Trying on both Node MCU and Wemos D1

Description of the issue:

When going to compile the ESP8266 connect the dots project (connectthedots/Devices/DirectlyConnectedDevices/ESP8266/connect_the_dots/) I get an error 'AzureIoTHubClient' does not name a type .

Code sample exhibiting the issue:

No changes have been made from the code cloned aside from the connectionString, ssid, and pass variables.

Console log of the issue:

                 from F:\OneDrive\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Deserialization/../StringTraits/ArduinoStream.hpp:9,

                 from F:\OneDrive\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Deserialization/../StringTraits/StringTraits.hpp:32,

                 from F:\OneDrive\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Deserialization/../JsonVariantComparisons.hpp:7,

                 from F:\OneDrive\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Deserialization/../JsonVariantBase.hpp:8,

                 from F:\OneDrive\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Deserialization/../JsonVariant.hpp:13,

                 from F:\OneDrive\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Deserialization/../JsonBuffer.hpp:12,

                 from F:\OneDrive\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Deserialization/JsonParser.hpp:7,

                 from F:\OneDrive\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/JsonBufferBase.hpp:7,

                 from F:\OneDrive\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/DynamicJsonBuffer.hpp:7,

                 from F:\OneDrive\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson.hpp:9,

                 from F:\OneDrive\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson.h:9,

                 from sketch\connect_the_dots.cpp:9:

C:\Users\aust\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266/Print.h:29:0: warning: "DEC" redefined [enabled by default]

 #define DEC 10

 ^

In file included from F:\OneDrive\Documents\Arduino\libraries\AzureIoTUtility\src/azure_c_shared_utility/lock.h:17:0,

                 from F:\OneDrive\Documents\Arduino\libraries\AzureIoTUtility\src/AzureIoTUtility.h:7,

                 from F:\OneDrive\Documents\Arduino\libraries\AzureIoTHub\src/AzureIoTHub.h:7,

                 from sketch\connect_the_dots.cpp:4:

F:\OneDrive\Documents\Arduino\libraries\AzureIoTUtility\src/azure_c_shared_utility/macro_utils.h:222:0: note: this is the location of the previous definition

 #define DEC(x) C2(DEC,x)

 ^

In file included from F:\OneDrive\Documents\Arduino\libraries\AzureIoTUtility\src/azure_c_shared_utility/lock.h:17:0,

                 from F:\OneDrive\Documents\Arduino\libraries\AzureIoTUtility\src/AzureIoTUtility.h:7,

                 from F:\OneDrive\Documents\Arduino\libraries\AzureIoTHub\src/AzureIoTHub.h:7,

                 from C:\Users\rosho\Desktop\connect_the_dots\connect_the_dots.ino:40:

F:\OneDrive\Documents\Arduino\libraries\AzureIoTUtility\src/azure_c_shared_utility/macro_utils.h:222:0: warning: "DEC" redefined [enabled by default]

 #define DEC(x) C2(DEC,x)

 ^

In file included from C:\Users\aust\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266/Stream.h:26:0,

                 from C:\Users\aust\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266/HardwareSerial.h:31,

                 from C:\Users\aust\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266/Arduino.h:245,

                 from sketch\connect_the_dots.ino.cpp:1:

C:\Users\aust\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266/Print.h:29:0: note: this is the location of the previous definition

 #define DEC 10

 ^

C:\Users\aust\Desktop\connect_the_dots\connect_the_dots.ino:149:7: warning: extra tokens at end of #else directive [enabled by default]

 #else -------------------------------------------------

       ^

C:\Users\aust\Desktop\connect_the_dots\connect_the_dots.ino:169:8: warning: extra tokens at end of #endif directive [enabled by default]

 #endif ===============================================

        ^

connect_the_dots:54: error: 'AzureIoTHubClient' does not name a type

 static AzureIoTHubClient iotHubClient;

        ^

C:\Users\aust\Desktop\connect_the_dots\connect_the_dots.ino: In function 'void setup()':

connect_the_dots:65: error: 'iotHubClient' was not declared in this scope

     iotHubClient.begin(sslClient);

     ^

exit status 1
'AzureIoTHubClient' does not name a type```

[olivierbloch]

Hi @austnalio, sorry for the late answer on this one.
The Azure IoT Arduino library has been updated some time ago with breaking changes. I need to go back and update this sample. In the meantime, try using the version 2.3.0 for the ESP8266 board package and version 1.0.17 for the following libraries: azureiothub, azureiotutility, azureiotprotocol_mqtt.
Let me know if that unblocks you.
I'll keep the issue open till I resolve the issue and will edit the readme to make sure people use the older versions of the libraries
Thanks

[HenrikBach1]

Hi, you should also bump (or let the) ArduinoJSON library (stay) to 5.13.5.

[olivierbloch]

Sorry I have not been maintaining this project much. Hopefully I can spend some cycles soon to refresh it.