httpsd 0.1.0

A pure-Rust HTTP/HTTPS server — usable as a sans-I/O library with pluggable runtimes (thread pool, tokio, mio) or as a CLI that serves a directory or a TOML config.
Documentation 
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//! A small static file-extension → MIME type table.

/// Guess a `Content-Type` from a file name's extension.
///
/// Returns `application/octet-stream` for unknown extensions. The `text/*`
/// types include a `charset=utf-8` parameter, which is the safe default for
/// files served by this crate.
pub fn from_path(path: &str) -> &'static str {
    let ext = path
        .rsplit('/')
        .next()
        .and_then(|name| name.rsplit_once('.'))
        .map(|(_, ext)| ext)
        .unwrap_or("");

    // Compare case-insensitively without allocating for the common case.
    let ext = ext.to_ascii_lowercase();
    match ext.as_str() {
        "html" | "htm" => "text/html; charset=utf-8",
        "css" => "text/css; charset=utf-8",
        "js" | "mjs" => "text/javascript; charset=utf-8",
        "json" => "application/json",
        "xml" => "application/xml",
        "txt" | "text" | "md" => "text/plain; charset=utf-8",
        "csv" => "text/csv; charset=utf-8",
        "svg" => "image/svg+xml",
        "png" => "image/png",
        "jpg" | "jpeg" => "image/jpeg",
        "gif" => "image/gif",
        "webp" => "image/webp",
        "avif" => "image/avif",
        "ico" => "image/x-icon",
        "bmp" => "image/bmp",
        "woff" => "font/woff",
        "woff2" => "font/woff2",
        "ttf" => "font/ttf",
        "otf" => "font/otf",
        "pdf" => "application/pdf",
        "wasm" => "application/wasm",
        "zip" => "application/zip",
        "gz" => "application/gzip",
        "tar" => "application/x-tar",
        "mp4" => "video/mp4",
        "webm" => "video/webm",
        "mp3" => "audio/mpeg",
        "ogg" => "audio/ogg",
        "wav" => "audio/wav",
        _ => "application/octet-stream",
    }
}

/// Whether a MIME type is already compressed and should not be re-compressed by
/// the response compression layer.
pub fn is_precompressed(content_type: &str) -> bool {
    let ct = content_type
        .split(';')
        .next()
        .unwrap_or(content_type)
        .trim();
    matches!(
        ct,
        "image/png"
            | "image/jpeg"
            | "image/gif"
            | "image/webp"
            | "image/avif"
            | "video/mp4"
            | "video/webm"
            | "audio/mpeg"
            | "audio/ogg"
            | "application/gzip"
            | "application/zip"
            | "application/wasm"
            | "font/woff"
            | "font/woff2"
    )
}