sark-h2 0.28.2

Fiber-free HTTP/2 protocol primitives and manifold server for sark
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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155

use sark_h2::{
    frame,
    frame::{
        Ack,
        controls::{Priority, RstStream, Settings},
        layout::Header,
        numbers::{Flags, Increment, Length, ParseError, Type},
        payload::{Continuation, Payload, Ping, WindowUpdate},
    },
    stream::Id,
};

#[test]
fn ping_size_beats_protocol() {
    let h = Header {
        length: Length::new(7).expect("fixture domain"),
        kind: Type::Ping,
        flags: Flags(0),
        stream_id: Id::new(1).expect("fixture domain"),
    };
    assert!(
        Ping::parse(h, &[0u8; 7])
            == Err(ParseError::FrameSize {
                kind: frame::numbers::Type::Ping,
                actual: 7,
                expected: 8,
            })
    );
}

#[test]
fn priority_checks_size() {
    let h = Header {
        length: Length::new(4).expect("fixture domain"),
        kind: Type::Priority,
        flags: Flags(0),
        stream_id: Id::new(0).expect("fixture domain"),
    };
    assert!(
        Priority::parse(h, &[0, 0, 0, 0])
            == Err(ParseError::FrameSize {
                kind: frame::numbers::Type::Priority,
                actual: 4,
                expected: 5,
            })
    );
}

#[test]
fn rst_size_beats_protocol() {
    let h = Header {
        length: Length::new(3).expect("fixture domain"),
        kind: Type::RstStream,
        flags: Flags(0),
        stream_id: Id::new(0).expect("fixture domain"),
    };
    assert!(
        RstStream::parse(h, &[0, 0, 0])
            == Err(ParseError::FrameSize {
                kind: frame::numbers::Type::RstStream,
                actual: 3,
                expected: 4,
            })
    );
}

#[test]
fn settings_checks_size() {
    let h = Header {
        length: Length::new(5).expect("fixture domain"),
        kind: Type::Settings,
        flags: Flags(0),
        stream_id: Id::new(3).expect("fixture domain"),
    };
    assert!(
        Settings::parse(h, &[0u8; 5])
            == Err(ParseError::SettingsSize {
                actual: 5,
                ack: Ack::Required,
            })
    );
}

#[test]
fn window_r_bit() {
    let h = Header {
        length: Length::new(4).expect("fixture domain"),
        kind: Type::WindowUpdate,
        flags: Flags(0),
        stream_id: Id::new(1).expect("fixture domain"),
    };
    let result = WindowUpdate::parse(h, &[0xff, 0xff, 0xff, 0xff]);
    let w = result.expect("valid frame fixture must parse");
    assert_eq!(w.increment.get(), 0x7fff_ffff);
}

#[test]
fn cont_zero_stream() {
    let h = Header {
        length: Length::new(0).expect("fixture domain"),
        kind: Type::Continuation,
        flags: Flags(0),
        stream_id: Id::new(0).expect("fixture domain"),
    };
    assert!(
        Continuation::parse(h, &[])
            == Err(ParseError::Stream {
                kind: h.kind,
                actual: h.stream_id,
            })
    );
}

#[test]
fn parse_need_more() {
    let f = Ping {
        ack: Ack::Required,
        opaque: [9u8; 8],
    };
    let mut out = Vec::new();
    Payload::Ping(f).encode(&mut out).expect("frame allocation");
    assert!(
        Payload::parse(&out[..out.len() - 1])
            == Err(ParseError::Need {
                actual: 16,
                required: 17,
            })
    );
}

#[test]
fn parse_two() {
    let mut out = Vec::new();
    Payload::Ping(Ping {
        ack: Ack::Required,
        opaque: [1u8; 8],
    })
    .encode(&mut out)
    .expect("frame allocation");
    let first = out.len();
    Payload::WindowUpdate(WindowUpdate {
        stream_id: Id::new(0).expect("fixture domain"),
        increment: Increment::new(1024).expect("fixture domain"),
    })
    .encode(&mut out)
    .expect("frame allocation");
    let result = Payload::parse(&out);
    let (f1, n1) = result.expect("valid frame fixture must parse");
    assert_eq!(n1, first);
    assert!(matches!(f1, Payload::Ping(p) if p.opaque == [1u8; 8]));
    let result = Payload::parse(&out[n1..]);
    let (f2, n2) = result.expect("valid frame fixture must parse");
    assert_eq!(n1 + n2, out.len());
    assert!(matches!(f2, Payload::WindowUpdate(w) if w.increment.get() == 1024));
}