Rust implementation of dtn bundle protocol 7 draft https://tools.ietf.org/html/draft-ietf-dtn-bpbis-26
This library only handles encoding and decoding of bundles, not transmission or other processing of the data. A full daemon using this library can be found here: https://github.com/dtn7/dtn7-rs
This code is (probably) not production ready!
A simple benchmark is shipped with the library. It (de)serializes Bundles with a primary block, bundle age block and a payload block with the contents (b"ABC"). This benchmark can be used to compare the rust implementation to the golang, python or java implementations.
cargo run --release --example benchmark
Finished release [optimized] target(s) in 0.29s
Running `target/release/examples/benchmark`
Creating 100000 bundles with CRC_NO: 510059 bundles/second
Creating 100000 bundles with CRC_16: 293399 bundles/second
Creating 100000 bundles with CRC_32: 291399 bundles/second
Encoding 100000 bundles with CRC_NO: 1090996 bundles/second
Encoding 100000 bundles with CRC_16: 436836 bundles/second
Encoding 100000 bundles with CRC_32: 432774 bundles/second
Loading 100000 bundles with CRC_NO: 564817 bundles/second
Loading 100000 bundles with CRC_16: 473768 bundles/second
Loading 100000 bundles with CRC_32: 462013 bundles/second
These numbers were generated on a MBP 13" 2018 with i5 CPU and 16GB of ram.
For debugging a small helper tool is shipped:
```
$ cargo install bp7
[...]
$ usage "bp7"
$ bp7 decode 9f8907000182016b6e6f6465332f696e626f7882016b6e6f6465332f696e626f7882016b6e6f6465332f696e626f78821a247966ba001ad693a4004225b686010000014341424342237186080100010042dbccff
[src/main.rs:17] &bndl = Bundle { primary: PrimaryBlock { version: 7, bundlecontrolflags: 0, crctype: 1, destination: Dtn( 1, "node3/inbox" ), source: Dtn( 1, "node3/inbox" ), reportto: Dtn( 1, "node3/inbox" ), creationtimestamp: CreationTimestamp( 611935930, 0 ), lifetime: 3600000000, fragmentationoffset: 0, totaldatalength: 0, crc: [ 37, 182 ] }, canonicals: [ CanonicalBlock { blocktype: 1, blocknumber: 0, blockcontrolflags: 0, crctype: 1, data: Data( [ 65, 66, 67 ] ), crc: [ 35, 113 ] }, CanonicalBlock { blocktype: 8, blocknumber: 1, blockcontrolflags: 0, crctype: 1, data: BundleAge( 0 ), crc: [ 219, 204 ] } ] } ```
The generated hex string can also be directly discplayed as raw cbor on the awesome cbor.me website, e.g. http://cbor.me/?bytes=9f8907000182016b6e6f6465332f696e626f7882016b6e6f6465332f696e626f7882016b6e6f6465332f696e626f78821a247966ba001ad693a4004225b686010000014341424342237186080100010042dbccff
The library should build for wasm even though only very few functions get exported. The example benchmark can also be used in the browser through the cargo-web crate:
cargo web start --target wasm32-unknown-unknown --example benchmark --release
Results should be shown in the javascript console on http://127.0.0.1:8000.
The performance is quite similar to the native performance:
Creating 100000 bundles with CRC_NO: 441696 bundles/second
Creating 100000 bundles with CRC_16: 416484 bundles/second
Creating 100000 bundles with CRC_32: 405022 bundles/second
Encoding 100000 bundles with CRC_NO: 1647039 bundles/second
Encoding 100000 bundles with CRC_16: 908059 bundles/second
Encoding 100000 bundles with CRC_32: 867603 bundles/second
Loading 100000 bundles with CRC_NO: 401727 bundles/second
Loading 100000 bundles with CRC_16: 388394 bundles/second
Loading 100000 bundles with CRC_32: 384186 bundles/second
Some functions can easily be used from javascript (cargo web deploy --release):
javascript
Rust.bp7.then(function(bp7) {
var b = bp7.rnd_bundle_now();
var enc = bp7.encode_to_cbor(b);
var payload = bp7.payload_from_bundle(b)
console.log(payload);
console.log(String.fromCharCode.apply(null, payload));
console.log(bp7.cbor_is_administrative_record(enc));
console.log(bp7.sender_from_cbor(enc));
console.log(bp7.recipient_from_bundle(b));
console.log(bp7.valid_bundle(b));
});
Note that at the moment all functions have a variant working on the binary bundle and one working on the decoded bundle struct.
If you use this software in a scientific publication, please cite the following paper:
BibTeX
@INPROCEEDINGS{baumgaertner2019bdtn7,
author={L. {Baumgärtner} and J. {Höchst} and T. {Meuser}},
booktitle={2019 International Conference on Information and Communication Technologies for Disaster Management (ICT-DM)},
title={B-DTN7: Browser-based Disruption-tolerant Networking via Bundle Protocol 7},
year={2019},
volume={},
number={},
pages={1-8},
keywords={Protocols;Browsers;Software;Convergence;Servers;Synchronization;Wireless fidelity},
doi={10.1109/ICT-DM47966.2019.9032944},
ISSN={2469-8822},
month={Dec},
}
Licensed under either of Apache License, Version 2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in bp7-rs by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.