Struct Header 

pub struct Header<T>(pub T);

Extracts a single header value by name.

The header name is derived from T::HEADER_NAME. Implement NamedHeader on your type to use this extractor.

Example

struct ContentType(String);

impl NamedHeader for ContentType {
    const HEADER_NAME: &'static str = "content-type";
    fn from_value(value: &str) -> Result<Self, String> {
        Ok(ContentType(value.to_string()))
    }
}

async fn handler(Header(ct): Header<ContentType>) -> String {
    format!("Content-Type: {}", ct.0)
}

Tuple Fields

0: T

Trait Implementations

impl<T: NamedHeader + 'static> FromRequestParts for Header<T>

type Error = (StatusCode, String)

The error type returned when extraction fails.

fn from_request_parts(parts: &Parts) -> Result<Self, Self::Error>

Extract this type from the request parts.