FB_IotHttpAwsSigV4HeaderFieldMap
This function block enables signing of a header with AWS Signature Version 4 (see AWS Signature Version 4).
Syntax
Definition:
FUNCTION BLOCK FB_IotHttpAwsSig4HeaderFieldMap EXTENDS FB_IotHttpHeaderFieldMap
VAR_OUTPUT
bError : BOOL;
hrErrorCode : HRESULT;
END_VAR
Outputs
Name | Type | Description |
|---|---|---|
bError | BOOL | Becomes TRUE when an error situation occurs |
hrErrorCode | HRESULT | Returns an ADS return code. An explanation of the possible ADS return codes can be found in the Appendix. |
Methods
Name | Description |
|---|---|
Adds a header field to an instance of this function module. | |
Sets the required parameters on a header intended for requests to AWS services and signs it. |
Requirements
Development environment | Target platform | PLC libraries to include |
|---|---|---|
TwinCAT v3.1.4024.12 or higher | IPC or CX (x86, x64, ARM) | Tc3_IotBase |
Further Information