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Function xn_get_dhcp_op

Extracts a DHCP option from the server response.

int xn_get_dhcp_op(DHCP_session * session, 
                   BYTE           op_id, 
                   BYTE           bufsize, 
                   PFVOID         dest);

Parameters

session

Pointer to DHCP_session used in xn_dhcp.

op_id

The option to extract (see below).

bufsize

Max data (in bytes) to write to *dest.

dest

Pointer to destination buffer to which the option data will be written.

return value

Returns 0 if successful, otherwise SOCKET_ERROR. If an error occurred, call xn_getlasterror and xn_geterror_string to return the error value. Section Error Codes further describes each error.

Possible values for this function are:

This routine extracts a DHCP option from a server response. If you used a custom configuration when calling xn_dhcp, you may have requested parameters that are not the RTIP-32 standard DHCP parameters. To extract these parameters from the server response packet, use this routine. Even though you can use this routine to access RTIP-32 standard DHCP parameters, it is easier to use the session->param field for this purpose. See section struct DHCP_std_params for more information.

Supported op_id values:

DHCP Client

Function xn_extend_dhcp_lease

Function xn_init_dhcp_conf