Implements encapsulated tunnel message receipt and processing.

TReceiver = class(TObject)

TReceiver is a class that implements for receipt and processing of encapsulated tunnel messages for Indy Tunnel components. TIdTunnelMaster uses TReceiver to handle message types and data from tunnel client connections.

Indicates an error in the CRC value for a message.

property CRCFailed: Boolean;

CRCFailed is a read-only Boolean property that indicates when the CRC checksum value for a tunnel message does not match the calculated CRC checksum value on receipt.

Represents data for the encapsulated tunnel message.

property Data: String;

Data is a String property that represents the contents of an encapsulated Tunnel message. Changing the value in Data results in updating the pBuffer message buffer including recalculation of the CRC value and detecting the message type.

Indicates a change to the Data for the message.

property NewMessage: Boolean;

NewMessage is a read-only Boolean property that indicates when the message or header has been updated as a result of changes to Data.

Constructor for the object instance.

constructor Create;

Owner of the object instance.

Create is the constructor for the object instance, and relies on the inherited Create method. Create also initializes object properties for the CRC calculator, HeaderLen, and MsgLen used by the object. Create allocates the buffers used for pBuffer and Msg.

Free the object instance.

destructor Destroy; override;

Destroy is the destructor for the object instance. Destroy frees pBuffer and Msg, as well as the CRC calculator for the object instance prior to calling the inherited Destroy method.

Handles multiple messages in the message buffer.

procedure ShiftData;

ShiftData is a procedure used to access, align, and calculate CRC values for multiple messages in pBuffer.