Struct Sigv4 

pub struct Sigv4<'a> {
    pub method: &'a str,
    pub host: &'a str,
    pub canonical_uri: &'a str,
    pub canonical_query: &'a str,
    pub payload: &'a [u8],
    pub region: &'a str,
    pub service: &'a str,
    pub access_key: &'a str,
    pub secret_key: &'a str,
    pub session_token: Option<&'a str>,
    pub amz: AmzDate,
}

All inputs needed to sign one request. Pure — no IO — so it is unit tested against AWS’s published example vector.

Fields

method: &'a str

host: &'a str

canonical_uri: &'a str

Already URI-encoded absolute path.

canonical_query: &'a str

Already-canonical query string (sorted, encoded). Empty for none.

payload: &'a [u8]

region: &'a str

service: &'a str

access_key: &'a str

secret_key: &'a str

session_token: Option<&'a str>

amz: AmzDate

Implementations

impl Sigv4<'_>

pub fn signed_headers(&self) -> Vec<(String, String)>

The (name, value) header pairs to attach to the outgoing request (x-amz-date, optional x-amz-security-token, authorization). The host header is not returned — the HTTP client sets it, and it is folded into the signature here using self.host.