Crate udptl 

UDPTL (UDP Transport Layer) codec and socket for T.38 fax.

UDPTL carries T.38 IFP packets over UDP with built-in error recovery via packet redundancy or forward error correction (FEC). Each UDPTL packet contains:

• Sequence number (2 bytes, big-endian, 0–65535)
• Primary IFP payload (ASN.1 open type)
• Error recovery: redundant copies of recent IFP packets, or FEC parity data

See ITU-T T.38 (Section 9.1, Annexes A and C) for the canonical specification.

Features

• Sync socket (UdptlSocket) — always available, wraps std::net::UdpSocket
• Async socket (AsyncUdptlSocket) — requires the tokio feature (default)
• Pure codec (UdptlPacket) — encode/decode without any socket, always available

Feature flags

Feature	Default	Description
tokio	yes	Enables AsyncUdptlSocket

For sync-only usage: udptl = { version = "0.1", default-features = false }

Re-exports

pub use error::Result;

pub use error::UdptlError;

pub use packet::ErrorRecovery;

pub use packet::MAX_UDPTL_PACKET_SIZE;

pub use packet::UdptlPacket;

pub use sync::UdptlSocket;

pub use async_socket::AsyncUdptlSocket;

Modules

async_socket

error

packet

sync

Structs

UdptlConfig

Configuration for a UDPTL session.

Enums

ErrorCorrectionScheme

Error correction scheme for outgoing packets.