GetHeaderField
This method can read the value of a specific header field from an HTTP response. To be able to read a header field from an HTTP response, the bBusy output of the function block FB_IotHttpRequest must return FALSE.
Syntax
METHOD GetHeaderField : BOOL
VAR_IN_OUT CONSTANT
sField : STRING;
END_VAR
VAR_INPUT
pValue : PVOID;
nValueSize : UDINT;
END_VAR
Return value
Name | Type | Description |
|---|---|---|
GetHeaderField | BOOL | Returns TRUE if the method call was successful. |
Inputs
Name | Type | Description |
|---|---|---|
pValue | PVOID | Pointer to data memory where the read data should be stored. |
nValueSize | UDINT | The maximum size that the buffer of this method can have. |
Inputs/outputs
Name | Type | Description |
|---|---|---|
sField | STRING | Name of the field that is added to the header of the HTTP request. |