dnp3

Documentation

Index

• Constants
• func Crc16(bs []byte) (crc uint16)
• func GetDNP3Banner(logStruct *DNP3Log, connection net.Conn) (err error)
• type DNP3Log

Constants

const (
	LINK_MIN_HEADER_LENGTH        = 10     // minimum link header length in bytes
	LINK_START_FIELD              = 0x0564 // Pre-set 2-byte start field
	LINK_DIR_BIT                  = 1      // Direction bit
	LINK_PRM_BIT                  = 1      // Primary message bit
	LINK_FCB_BIT                  = 0      // Frame count bit
	LINK_FCV_BIT                  = 0      // Frame count valid bit
	LINK_BROADCAST_ADDRESS        = 0x0001 // Broadcast address w/o mandatory application response
	LINK_UNCONFIRMED_USER_DATA_FC = 0x4    // don't require link layer response function code
	LINK_REQUEST_STATUS_FC        = 0x9    // 4-bit function code for requesting link status
	LINK_STATUS_FC                = 0xB    // 4-bit response function code for link status
	FUNCTION_CODE_NOT_SUPPORTED   = 0xF    // Unsupported function code response
	TRANSPORT_START_SEQUENCE      = 0x00   // starting sequence number for transport packet
	APP_START_SEQUENCE            = 0x00   // starting sequence number for application packet
	APP_CON_BIT                   = 0      // no app acknowledgement
	APP_UNS_BIT                   = 0      // not an unsolicited response
	APP_FUNC_CODE_READ            = 0x01   // 1-byte function code for reading
	APP_GROUP_0                   = 0x00   // group 0 refers to all static data
	APP_GROUP_0_QUALIFIER         = 0x00   // objects are packed without index prefix
	APP_GROUP_0_RANGE             = 0x0000 // no range due to no qualifier
	APP_GROUP_0_SOFTWARE_VERSION  = 0xF2   // group 0 attribute - device manufacturer's software version
	APP_GROUP_0_HARDWARE_VERSION  = 0xF3   // group 0 attribute - device manufacturer's hardware version
	APP_GROUP_0_LOCATION          = 0xF5   // group 0 attribute - device location
	APP_GROUP_0_DEVICE_ID         = 0xF6   // group 0 attribute - device application id
	APP_GROUP_0_DEVICE_NAME       = 0xF7   // group 0 attribute - device name
	APP_GROUP_0_SERIAL_NUMBER     = 0xF8   // group 0 attribute - device manufacturer's serial number
	APP_GROUP_0_DNP3_SUBSET       = 0xF9   // subset of the dnp3 protocol that is implemented
	APP_GROUP_0_PRODUCT_NAME      = 0xFA   // group 0 attribute - device manufacturer's product name and model
	APP_GROUP_0_ALL_ATTRIBUTES    = 0xFE   // get all available group 0 attributes in single response
	APP_GROUP_0_LIST_ATTRIBUTES   = 0xFF   // list available group 0 attributes
)

DNP3 Flags

Functions

func Crc16

func Crc16(bs []byte) (crc uint16)

func GetDNP3Banner

func GetDNP3Banner(logStruct *DNP3Log, connection net.Conn) (err error)

Types

type DNP3Log

type DNP3Log struct {
	IsDNP3      bool   `json:"is_dnp3"`
	RawResponse []byte `json:"raw_response,omitempty"`
}