pdcomm_opcua_last_error_copy

Function

Copies the detail text of the last failed call on this thread.

int32_t pdcomm_opcua_last_error_copy(uint8_t *output, size_t capacity, size_t *required)

Declared in: #include <pdcomm/opcua/pdcomm_opcua.h>

Every OPC UA function except pdcomm_opcua_abi_version() and this one replaces the text, and a successful call leaves it empty. This query preserves it. The text is English UTF-8 without a terminator, for logs and users only: do not base decisions on its exact wording.

Parameters

Name	Description
output	Destination, or null when capacity is zero.
capacity	Size of output in bytes.
required	Receives the complete text size in bytes; must not be null.

Returns

#PDCOMM_OPCUA_OK, #PDCOMM_OPCUA_BUFFER_TOO_SMALL (the output is unchanged) or #PDCOMM_OPCUA_INVALID_INPUT.

Notes

• The text is local to the calling operating-system thread.