ringline_h2/
error.rs

1/// HTTP/2 error codes (RFC 7540 Section 7).
2#[derive(Debug, Clone, Copy, PartialEq, Eq)]
3#[repr(u32)]
4pub enum ErrorCode {
5    NoError = 0x0,
6    ProtocolError = 0x1,
7    InternalError = 0x2,
8    FlowControlError = 0x3,
9    SettingsTimeout = 0x4,
10    StreamClosed = 0x5,
11    FrameSizeError = 0x6,
12    RefusedStream = 0x7,
13    Cancel = 0x8,
14    CompressionError = 0x9,
15    ConnectError = 0xa,
16    EnhanceYourCalm = 0xb,
17    InadequateSecurity = 0xc,
18    Http11Required = 0xd,
19}
20
21impl ErrorCode {
22    pub fn from_u32(v: u32) -> Self {
23        match v {
24            0x0 => Self::NoError,
25            0x1 => Self::ProtocolError,
26            0x2 => Self::InternalError,
27            0x3 => Self::FlowControlError,
28            0x4 => Self::SettingsTimeout,
29            0x5 => Self::StreamClosed,
30            0x6 => Self::FrameSizeError,
31            0x7 => Self::RefusedStream,
32            0x8 => Self::Cancel,
33            0x9 => Self::CompressionError,
34            0xa => Self::ConnectError,
35            0xb => Self::EnhanceYourCalm,
36            0xc => Self::InadequateSecurity,
37            0xd => Self::Http11Required,
38            _ => Self::InternalError,
39        }
40    }
41}
42
43/// Errors produced by the HTTP/2 framing layer.
44#[derive(Debug)]
45pub enum H2Error {
46    /// Frame decoding error (truncated, invalid payload, etc.).
47    FrameError,
48    /// Received a frame that violates the protocol.
49    ProtocolError(String),
50    /// HPACK header compression/decompression error.
51    CompressionError,
52    /// Flow control violation.
53    FlowControlError,
54    /// Frame size exceeds the maximum allowed.
55    FrameSizeError,
56    /// Connection-level error with an error code.
57    ConnectionError(ErrorCode),
58    /// Stream-level error with an error code.
59    StreamError(u32, ErrorCode),
60    /// Internal error with a description.
61    Internal(String),
62}
63
64impl std::fmt::Display for H2Error {
65    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
66        match self {
67            Self::FrameError => write!(f, "frame error"),
68            Self::ProtocolError(s) => write!(f, "protocol error: {s}"),
69            Self::CompressionError => write!(f, "HPACK compression error"),
70            Self::FlowControlError => write!(f, "flow control error"),
71            Self::FrameSizeError => write!(f, "frame size error"),
72            Self::ConnectionError(code) => write!(f, "connection error: {code:?}"),
73            Self::StreamError(id, code) => write!(f, "stream {id} error: {code:?}"),
74            Self::Internal(s) => write!(f, "internal: {s}"),
75        }
76    }
77}
78
79impl std::error::Error for H2Error {}
ringline_h2/error.rs

ringline_h2/
error.rs
