Module packet 

SRT packet structure — draft-sharabayko-srt-01 §3 (Packet Structure).

Every SRT packet is the payload of one UDP datagram (§3, Figure 1). It starts with a 16-byte SRT header (Figure 2): a leading F bit distinguishes data packets (F=0, §3.1) from control packets (F=1, §3.2); the following two header words carry packet-type-specific fields, and the header always closes with a 32-bit Timestamp and a 32-bit Destination Socket ID.

This module is packet structure only — parse/serialize of the wire format. The handshake state machine (caller/listener/rendezvous exchange, §4.3), loss/ARQ handling, TSBPD, congestion control, and the actual AES key-wrap/unwrap crypto (§6) are explicit follow-ups; see the crate root docs.

Re-exports

pub use ack::AckCif;

pub use ack::AckPacket;

pub use control::ControlPacket;

pub use control::ControlType;

pub use control::UserDefinedPacket;

pub use data::DataPacket;

pub use data::EncryptionKeyField;

pub use data::PacketPosition;

pub use handshake::EncryptionField;

pub use handshake::ExtensionType;

pub use handshake::GroupFlags;

pub use handshake::GroupMembershipExtension;

pub use handshake::GroupType;

pub use handshake::HandshakeExtensionBlock;

pub use handshake::HandshakeExtensionFlags;

pub use handshake::HandshakeExtensionMessageFlags;

pub use handshake::HandshakeExtensions;

pub use handshake::HandshakePacket;

pub use handshake::HandshakeType;

pub use handshake::HsExtMessage;

pub use key_material::Cipher;

pub use key_material::KeyMaterial;

pub use key_material::KmAuth;

pub use key_material::KmKeyFlag;

pub use key_material::StreamEncapsulation;

pub use misc::AckAckPacket;

pub use misc::CongestionWarningPacket;

pub use misc::DropReqPacket;

pub use misc::KeepAlivePacket;

pub use misc::PeerErrorPacket;

pub use misc::ShutdownPacket;

pub use nak::LossListEntry;

pub use nak::NakPacket;

Modules

ack

ACK (Acknowledgment) control packet — draft-sharabayko-srt-01 §3.2.4, Figure 13.

control

SRT control packet dispatch — draft-sharabayko-srt-01 §3.2, Figure 4, Table 1.

data

SRT data packet — draft-sharabayko-srt-01 §3.1, Figure 3.

handshake

Handshake control packet — draft-sharabayko-srt-01 §3.2.1, Figure 5, and its extension messages: Handshake Extension Message (§3.2.1.1 / Figure 6, flags in §3.2.1.1.1 / Table 6), Key Material Extension (§3.2.1.2, content is a super::KeyMaterial — §3.2.2), Stream ID Extension (§3.2.1.3 / Figure 7), and Group Membership Extension (§3.2.1.4 / Figures 8-9).

key_material

Key Material message — draft-sharabayko-srt-01 §3.2.2, Figures 10-11.

misc

The CIF-less / single-scalar-CIF control packets: Keep-Alive (§3.2.3), Congestion Warning (§3.2.6), Shutdown (§3.2.7), ACKACK (§3.2.8), Message Drop Request (§3.2.9), and Peer Error (§3.2.10).

nak

NAK (Negative Acknowledgement / Loss Report) control packet — draft-sharabayko-srt-01 §3.2.5, Figure 14, and the loss-list coding of Appendix A.

Enums

SrtPacket

A parsed SRT packet — the payload of one UDP datagram carrying SRT traffic (draft-sharabayko-srt-01 §3, Figure 1 / Figure 2).

Constants

SRT_HEADER_LEN

Length in bytes of the fixed SRT header shared by data and control packets (draft-sharabayko-srt-01 §3, Figure 2): 4 header words = 16 bytes, before any packet-type-specific payload (data) or Control Information Field (control).