XvcConnection

The class description is shown below:

class XvcConnection

Manages one TCP client connection speaking the XVC protocol.

XvcConnection parses XVC commands (getinfo, settck, shift) from a connected socket, dispatches JTAG operations through JtagDriver, and sends protocol responses back to the TCP client.

Public Functions

XvcConnection(int sd, JtagDriver *drv, uint64_t maxVecLen_ = 32768)

Accepts and initializes a new XVC TCP sub-connection.

Parameters:

• sd – Listening socket descriptor.

• drv – Driver used to execute JTAG operations.

• maxVecLen_ – Maximum vector length in bytes accepted from client.

virtual void fill(uint64_t n)

Ensures at least n bytes are available in RX buffer.

Parameters:

n – Required number of bytes.

virtual void flush()

Flushes pending TX buffer bytes to socket.

virtual void bump(uint64_t n)

Marks n RX bytes as consumed.

Parameters:

n – Number of bytes to consume.

virtual void allocBufs()

Allocates/reinitializes internal RX/TX buffers.

virtual void run()

Runs command processing loop for this connection.

ssize_t readTo(void *buf, size_t count)

Reads up to count bytes with timeout.

Parameters:

• buf – Destination buffer.

• count – Maximum bytes to read.

Returns:

Number of bytes read, or 0 on timeout/no data.

virtual ~XvcConnection()

Closes this XVC TCP sub-connection.