oven-sh/bun · error · http::Error

UnrequestedUpgrade

UnrequestedUpgrade

Error message

UnrequestedUpgrade

What it means

Error "UnrequestedUpgrade" thrown in oven-sh/bun.

Source

Thrown at src/http/error.rs:54

    #[error("ERR_TLS_CERT_ALTNAME_INVALID")]
    ERR_TLS_CERT_ALTNAME_INVALID,
    #[error("ClientAborted")]
    ClientAborted,
    #[error("HTTP2Unsupported")]
    HTTP2Unsupported,
    #[error("ConnectionClosed")]
    ConnectionClosed,
    #[error("DNSResolveFailed")]
    DNSResolveFailed,
    #[error("ConnectionRefused")]
    ConnectionRefused,
    #[error("TooManyRedirects")]
    TooManyRedirects,
    #[error("HTTP3Unsupported")]
    HTTP3Unsupported,
    #[error("ResponseHeadersTooLarge")]
    ResponseHeadersTooLarge,
    #[error("UnrequestedUpgrade")]
    UnrequestedUpgrade,
    #[error("UnexpectedData")]
    UnexpectedData,
    #[error("InvalidHTTPResponse")]
    InvalidHTTPResponse,
    #[error("InvalidContentLength")]
    InvalidContentLength,
    #[error("UnsupportedTransferEncoding")]
    UnsupportedTransferEncoding,
    #[error("RequestBodyNotReusable")]
    RequestBodyNotReusable,
    #[error("UnsupportedRedirectProtocol")]
    UnsupportedRedirectProtocol,
    #[error("RedirectURLTooLong")]
    RedirectURLTooLong,
    #[error("RedirectURLInvalid")]
    RedirectURLInvalid,
    #[error("InvalidRedirectURL")]

View on GitHub (pinned to 8c5296ac45)

When it happens

Trigger: Thrown at src/http/error.rs:54 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of oven-sh/bun@8c5296ac45 (2026-08-16). Data as JSON: /api/errors/eea044017ffa6c2c. Report an issue: GitHub.