Licklider Transmission Protocol (CCSDS 734.1-B) for reliable DTN links
Resolve merge conflicts in ocaml-delegation
Keep Service naming (more generic than Unikernel).
Also fix bundle/bpsec source URLs to use tangled.org.
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README.md
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README.md
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# ltp
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Pure OCaml implementation of Licklider Transmission Protocol (RFC 5326)
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for reliable data delivery over high-delay and disruption-prone links.
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## Overview
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LTP is designed for deep-space communications where round-trip times can be
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minutes to hours. It provides selective acknowledgment and retransmission
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with support for both reliable and unreliable data segments.
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## Features
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- SDNV (Self-Delimiting Numeric Value) encoding/decoding
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- Session management with engine/session IDs
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- Data segment types:
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- **Red segments** - reliable with acknowledgment
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- **Green segments** - best-effort delivery
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- Control segments:
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- Report segments (acknowledge received ranges)
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- Report-ack segments
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- Cancel segments
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- Checkpoint and report-based flow control
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## Installation
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```
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opam install ltp
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```
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## Usage
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```ocaml
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open Ltp
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(* Create a session ID *)
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let session = { originator = 1L; number = 42L }
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(* Encode an SDNV value *)
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let encoded = encode_sdnv 127L
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(* Decode an SDNV value *)
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match decode_sdnv encoded 0 with
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| Ok (value, _offset) -> Printf.printf "Value: %Ld\n" value
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| Error msg -> Printf.printf "Error: %s\n" msg
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```
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## Related Work
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- [ION](https://sourceforge.net/projects/ion-dtn/) - NASA/JPL DTN with LTP
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- [µD3TN](https://gitlab.com/d3tn/ud3tn) - Lightweight DTN with LTP support
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## References
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- [RFC 5326](https://datatracker.ietf.org/doc/html/rfc5326) - LTP Specification
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- [RFC 5325](https://datatracker.ietf.org/doc/html/rfc5325) - LTP Motivation
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- [RFC 5327](https://datatracker.ietf.org/doc/html/rfc5327) - LTP Security Extensions
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## License
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ISC License. See [LICENSE.md](LICENSE.md) for details.