net::FragmentReassembler Class Reference

#include <FragmentReassembler.hpp>

Collaboration diagram for net::FragmentReassembler:

Classes
struct	ActiveSet
struct	OptionalSet

Public Types
enum class	Result { InProgress , Complete , Stale , Malformed }
	Result of addFragment. More...

Public Member Functions
Result	addFragment (const PacketHeader &hdr, const uint8_t *payload, int payloadLen, std::vector< uint8_t > &assembled)
	Feed one received fragment into the reassembler.
void	reset () noexcept
	Drop any in-progress reassembly.

Static Public Attributes
static constexpr int	k_maxFragments = 255
	Maximum fragments per logical message — matches the 8-bit fragment-count field in the wire header.

Static Private Member Functions
static bool	seqMoreRecent (std::uint32_t s1, std::uint32_t s2) noexcept
	Glenn-Fiedler "is s2 more recent than s1?" with 16-bit wrap.

Private Attributes
OptionalSet	active_

Member Enumeration Documentation

Result

enum class net::FragmentReassembler::Result

strong

Result of addFragment.

Enumerator
InProgress	Fragment accepted into in-progress set, but more fragments are still needed before the message is complete.
Complete	Fragment was the final missing piece — assembled is populated with the full logical message.
Stale	Fragment was older than the in-progress set and got dropped (drop-stale semantics).
Malformed	Header was malformed (bad fragment index/count).

Member Function Documentation

addFragment()

Result net::FragmentReassembler::addFragment ( const PacketHeader & hdr, const uint8_t * payload, int payloadLen, std::vector< uint8_t > & assembled )

inline

Feed one received fragment into the reassembler.

Parameters

hdr	Received PacketHeader. flags.0 must be set (caller pre-checks); fragmentInfo carries (index << 8) | count.
payload	Fragment payload bytes (already stripped of the 16-byte PacketHeader by UdpEndpoint).
payloadLen	Length of the fragment's payload (≤ k_maxPayloadBytes).
assembled	Output: filled with the full reassembled logical-message bytes when result == Complete.

Returns

See Result enum.

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reset()

void net::FragmentReassembler::reset ( )

inlinenoexcept

Drop any in-progress reassembly.

Used on disconnect / connection reset.

seqMoreRecent()

bool net::FragmentReassembler::seqMoreRecent ( std::uint32_t s1, std::uint32_t s2 )

inlinestaticprivatenoexcept

Glenn-Fiedler "is s2 more recent than s1?" with 16-bit wrap.

Used for stale-fragment detection.

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Member Data Documentation

active_

OptionalSet net::FragmentReassembler::active_

private

k_maxFragments

int net::FragmentReassembler::k_maxFragments = 255

staticconstexpr

Maximum fragments per logical message — matches the 8-bit fragment-count field in the wire header.

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

• src/network/transport/FragmentReassembler.hpp