RFC 8654 support

[ties]

I think I encountered some RFC8654/large BGP messages in the wild in route-views.chile/2025.09/updates.20250902.0615.bz2 (and others):

[2025-09-04T06:46:16Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4834
[other lengths]

[digizeph]

Can confirm. Current version of bgpkit-parser produces this:

bgpkit-parser http://archive.routeviews.org/route-views.chile/bgpdata/2025.09/UPDATES/updates.20250902.0615.bz2 1>/dev/null
[2025-09-05T20:43:12Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 6746
[2025-09-05T20:43:12Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4411
[2025-09-05T20:43:12Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4597
[2025-09-05T20:43:12Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4247
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 6748
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 5199
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 6363
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4157
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 5158
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4227
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4490
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 5219
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4471
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4164
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 7147
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4287
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4852
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4899
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4597
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4247
[2025-09-05T20:43:13Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4879

[digizeph]

Large BGP message support allows successful parsing for more BGP messages. (roughly 3% more in the test case)

➜  bgpkit-parser git:(feat/RFC8654) ✗ bgpkit-parser http://archive.routeviews.org/route-views.chile/bgpdata/2025.09/UPDATES/updates.20250902.0615.bz2 --elems-count                        
[2025-09-05T21:00:03Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 6746
[2025-09-05T21:00:03Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4411
[2025-09-05T21:00:03Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4597
[2025-09-05T21:00:03Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4247
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 6748
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 5199
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 6363
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4157
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 5158
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4227
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4490
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 5219
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4471
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4164
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 7147
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4287
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4852
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4899
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4597
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4247
[2025-09-05T21:00:04Z ERROR bgpkit_parser::parser::iters] parser error: invalid BGP message length 4879
total records: 738493
➜  bgpkit-parser git:(feat/RFC8654) cargo run --release --features cli -- http://archive.routeviews.org/route-views.chile/bgpdata/2025.09/UPDATES/updates.20250902.0615.bz2 --elems-count
    Finished `release` profile [optimized] target(s) in 0.18s
     Running `target/release/bgpkit-parser 'http://archive.routeviews.org/route-views.chile/bgpdata/2025.09/UPDATES/updates.20250902.0615.bz2' --elems-count`
total records: 764477