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
|
extern crate nom;
extern crate pktparse;
mod tests {
use pktparse::tcp::TcpOption;
use pktparse::{ipv4, tcp};
#[test]
fn parse_tcp_packet() {
let bytes = [
0x45, 0x00, 0x00, 0x38, 0x76, 0xf4, 0x40, 0x00, 0x40, 0x06, 0x80, 0xd9, 0xc0, 0xa8,
0x00, 0x6c, 0xd0, 0x61, 0xb1, 0x7c, 0xb0, 0xc2, 0x00, 0x50, 0xb0, 0xee, 0x32, 0xa6,
0x04, 0x39, 0xae, 0xe6, 0x50, 0x18, 0x00, 0xe5, 0x76, 0x92, 0x00, 0x00, 0x47, 0x45,
0x54, 0x20, 0x2f, 0x69, 0x6e, 0x64, 0x65, 0x78, 0x2e, 0x68, 0x74, 0x6d, 0x6c, 0x0a,
];
if let Ok((remaining, _)) = ipv4::parse_ipv4_header(&bytes) {
if let Ok((remaining, tcp_hdr)) = tcp::parse_tcp_header(remaining) {
assert_eq!(tcp_hdr.source_port, 45250);
assert_eq!(tcp_hdr.dest_port, 80);
assert_eq!(&remaining[..], b"GET /index.html\x0a");
} else {
assert!(false);
}
} else {
assert!(false);
}
}
#[test]
fn parse_tcp_packet_with_options() {
let bytes = [
0x45, 0x20, 0x00, 0x34, 0x78, 0xd6, 0x40, 0x00, 0x35, 0x06, 0x7e, 0x77, 0x45, 0xa4,
0x10, 0x00, 0xc0, 0xa8, 0x38, 0x0a, 0x00, 0x50, 0xc2, 0x27, 0x48, 0xf3, 0x02, 0xc2,
0x61, 0xd3, 0x16, 0xa8, 0x80, 0x12, 0xff, 0xff, 0x9b, 0x80, 0x00, 0x00, 0x02, 0x04,
0x05, 0x3a, 0x01, 0x03, 0x03, 0x04, 0x04, 0x02, 0x00, 0x00,
];
if let Ok((remaining, _)) = ipv4::parse_ipv4_header(&bytes) {
if let Ok((remaining, tcp_hdr)) = tcp::parse_tcp_header(remaining) {
assert_eq!(tcp_hdr.source_port, 80);
assert_eq!(tcp_hdr.dest_port, 49703);
assert_eq!(remaining.len(), 0);
let options = tcp_hdr.options.unwrap();
assert_eq!(options.len(), 5);
let o = options[0];
let expectation = tcp::MaximumSegmentSize { mss: 1338 };
assert_eq!(o, TcpOption::MaximumSegmentSize(expectation));
let o = options[1];
assert_eq!(o, TcpOption::NoOperation);
let o = options[2];
let expectation = tcp::WindowScale { scaling: 4 };
assert_eq!(o, TcpOption::WindowScale(expectation));
let o = options[3];
assert_eq!(o, TcpOption::SackPermitted);
let o = options[4];
assert_eq!(o, TcpOption::EndOfOptions);
} else {
assert!(false);
}
} else {
assert!(false);
}
}
}
|
