b2bits::nasdaq::moldudp64::PacketHeader Class Reference

MoldUDP64 packet header. More...

Detailed Description

MoldUDP64 packet header.

Header for MoldUDP64 downstream packets sent from server to client. Each packet contains a sequence of messages with monotonically increasing sequence numbers. The header identifies the session, starting sequence number, and message count.

Wire format (20 bytes):

• Session (10 bytes): ASCII session identifier
• Sequence Number (8 bytes): First message sequence number in packet
• Message Count (2 bytes): Number of messages in packet, or 0xFFFF for end-of-session

Note

All multi-byte fields are in network byte order (big-endian)

Special count value 0xFFFF (EOS_COUNT) indicates end of session

#include <nasdaq/moldudp64/Messages.h>

Public Member Functions
const FixedString< 10 > &	get_session () const
	Get session identifier (const).
FixedString< 10 > &	get_session ()
	Get session identifier (mutable).
UInt64	get_sequence_number () const
	Get first message sequence number in this packet.
void	set_sequence_number (UInt64 val)
	Set first message sequence number.
UInt16	get_count () const
	Get message count.
void	set_count (UInt16 val)
	Set message count.

Member Function Documentation

get_count()

UInt16 b2bits::nasdaq::moldudp64::PacketHeader::get_count ( ) const

inline

Get message count.

Returns

Number of messages in packet, or EOS_COUNT for end-of-session

Referenced by b2bits::nasdaq::moldudp64::UDPPacket::get_count().

get_sequence_number()

UInt64 b2bits::nasdaq::moldudp64::PacketHeader::get_sequence_number ( ) const

inline

Get first message sequence number in this packet.

Returns

Sequence number in host byte order

Referenced by b2bits::nasdaq::moldudp64::UDPPacket::get_sn().

get_session() [1/2]

FixedString< 10 > & b2bits::nasdaq::moldudp64::PacketHeader::get_session ( )

inline

Get session identifier (mutable).

Returns

Reference to session string

get_session() [2/2]

const FixedString< 10 > & b2bits::nasdaq::moldudp64::PacketHeader::get_session ( ) const

inline

Get session identifier (const).

Returns

Const reference to session string

Referenced by b2bits::nasdaq::moldudp64::UDPPacket::get_session().

set_count()

void b2bits::nasdaq::moldudp64::PacketHeader::set_count ( UInt16 val )

inline

Set message count.

Parameters

val	Number of messages, or EOS_COUNT for end-of-session

set_sequence_number()

void b2bits::nasdaq::moldudp64::PacketHeader::set_sequence_number ( UInt64 val )

inline

Set first message sequence number.

Parameters

val	Sequence number in host byte order

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The documentation for this class was generated from the following file:

• nasdaq/moldudp64/Messages.h