pdcomm_opcua_buffer_copy

Function

Copies the bytes of a buffer handle.

int32_t pdcomm_opcua_buffer_copy(pdcomm_opcua_handle buffer, uint8_t *output, size_t capacity, size_t *required)

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

Works for every buffer: a response, a discovery result, a local address or a DataValue. Pass a null output and zero capacity to query the size. The bytes have no terminator.

Parameters

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

Returns

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

Notes

Buffers are immutable; copy them from any thread.