1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
use std::io::{Error, ErrorKind, Result};
use log::debug;
use crate::message::{self, compress, Compressor};
impl Compressor for message::peerlist::Message {
fn compress_with_header(&self) -> Result<bytes::Bytes> {
let type_id = message::TYPES
.get("peerlist")
.ok_or_else(|| Error::new(ErrorKind::InvalidInput, "unknown type name"))?;
let packer = message::default_packer();
packer.pack_u32(self.peers.len() as u32)?;
for p in self.peers.iter() {
packer.pack_bytes_with_header(p.certificate.as_ref())?;
packer.pack_ip(p.ip_addr, p.ip_port)?;
packer.pack_u64(p.time)?;
packer.pack_bytes_with_header(p.sig.as_ref())?;
}
let bytes_uncompressed = packer.bytes_len();
let compressed = compress::pack_gzip(&packer.take_bytes())?;
let bytes_compressed = compressed.len();
let packer = message::default_packer_with_header();
packer.pack_byte(*type_id)?;
packer.pack_bool(true)?;
packer.pack_bytes(compressed.as_ref())?;
if bytes_uncompressed > bytes_compressed {
debug!(
"peerlist compression saved {} bytes",
bytes_uncompressed - bytes_compressed
);
} else {
debug!(
"peerlist compression added {} byte(s)",
bytes_compressed - bytes_uncompressed
);
}
Ok(packer.take_bytes())
}
}
#[test]
fn test_message() {
use avalanche_utils::cmp;
let msg = message::peerlist::Message::create(
vec![
message::peerlist::Peer {
certificate: vec![0x01, 0x02, 0x03],
ip_addr: std::net::IpAddr::V4(std::net::Ipv4Addr::LOCALHOST),
ip_port: 8080,
time: 7,
sig: vec![0x01, 0x02, 0x03, 0x04],
},
message::peerlist::Peer {
certificate: vec![0x01, 0x02, 0x03],
ip_addr: std::net::IpAddr::V4(std::net::Ipv4Addr::LOCALHOST),
ip_port: 8081,
time: 7,
sig: vec![0x01, 0x02, 0x03, 0x04],
},
],
false,
);
let data_with_header = msg.compress_with_header().unwrap();
let expected_data: &[u8] = &[
0x00, 0x00, 0x00, 0x3f,
0x12,
0x01,
0x1f, 0x8b, 0x8, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xff, 0x75, 0xca, 0xcb, 0x9, 0x0, 0x20, 0xc,
0x4, 0xd1, 0xc9, 0x7, 0x2c, 0xc3, 0x52, 0x6d, 0x41, 0x3b, 0x36, 0x87, 0x1c, 0x42, 0x20,
0xb, 0x7b, 0x18, 0x78, 0x80, 0x2, 0x26, 0x6a, 0x94, 0x1d, 0x90, 0x7d, 0x33, 0x56, 0xdc,
0x3, 0xf8, 0x4, 0x5f, 0x87, 0x1f, 0x57, 0xe3, 0x44, 0x24, 0x56, 0x0, 0x0,
0x0,
];
assert!(cmp::eq_vectors(expected_data, &data_with_header));
}