eggress-protocol-http 1.0.4

HTTP/1.1 CONNECT protocol for eggress proxy
Documentation 
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

/// Error types for HTTP proxy protocol operations.
#[derive(Debug, thiserror::Error)]
pub enum HttpError {
    #[error("IO error: {0}")]
    Io(#[from] std::io::Error),

    #[error("malformed request: {0}")]
    MalformedRequest(String),

    #[error("malformed response: {0}")]
    MalformedResponse(String),

    #[error("unsupported HTTP version: {0}")]
    UnsupportedVersion(String),

    #[error("missing required header: {0}")]
    MissingHeader(String),

    #[error("invalid header value: {0}")]
    InvalidHeaderValue(String),

    #[error("header too large")]
    HeaderTooLarge,

    #[error("too many header lines")]
    TooManyHeaders,

    #[error("target address parse error: {0}")]
    TargetParseError(String),

    #[error("authentication required (407 Proxy Authentication Required)")]
    AuthRequired,

    #[error("authentication failed (403 Forbidden)")]
    AuthFailed,

    #[error("connection refused by upstream")]
    ConnectionRefused,

    #[error("gateway timeout (504)")]
    GatewayTimeout,

    #[error("bad gateway (502)")]
    BadGateway,

    #[error("unexpected status code: {0}")]
    UnexpectedStatus(u16),

    #[error("upstream error: {0}")]
    Upstream(String),

    #[error("invalid Content-Length header")]
    InvalidContentLength,

    #[error("conflicting Content-Length values")]
    ConflictingContentLength,

    #[error("Transfer-Encoding with Content-Length is not allowed")]
    TransferEncodingWithContentLength,

    #[error("unsupported transfer encoding: {0}")]
    UnsupportedTransferEncoding(String),

    #[error("chunked transfer encoding must be the final coding")]
    ChunkedNotFinal,

    #[error("invalid credentials: control characters not allowed")]
    InvalidCredentials,

    #[error("HTTP expectation is not supported")]
    ExpectationFailed,

    #[error("HTTP protocol upgrade is not supported")]
    UpgradeUnsupported,

    #[error("too many informational responses")]
    TooManyInformationalResponses,
}

impl HttpError {
    /// Returns the appropriate HTTP status code for this error.
    pub fn status_code(&self) -> u16 {
        match self {
            HttpError::MalformedRequest(_) => 400,
            HttpError::AuthRequired => 407,
            HttpError::AuthFailed => 403,
            HttpError::ConnectionRefused => 502,
            HttpError::BadGateway => 502,
            HttpError::GatewayTimeout => 504,
            HttpError::HeaderTooLarge => 431,
            HttpError::TooManyHeaders => 431,
            HttpError::InvalidContentLength => 400,
            HttpError::ConflictingContentLength => 400,
            HttpError::TransferEncodingWithContentLength => 400,
            HttpError::UnsupportedTransferEncoding(_) => 400,
            HttpError::ChunkedNotFinal => 400,
            HttpError::InvalidCredentials => 400,
            HttpError::ExpectationFailed => 417,
            HttpError::UpgradeUnsupported => 501,
            HttpError::TooManyInformationalResponses => 502,
            _ => 500,
        }
    }
}