7 use http::{header, HeaderMap, HeaderName, HeaderValue};
19     use http::{header::CONTENT_TYPE, HeaderMap};
26     pub(crate) fn is_grpc_web(headers: &HeaderMap) -> bool {  in is_grpc_web()
33     fn content_type(headers: &HeaderMap) -> Option<&str> {  in content_type()
70     trailers: Option<HeaderMap>,
352     pub(crate) fn from_content_type(headers: &HeaderMap) -> Encoding {  in from_content_type()
356     pub(crate) fn from_accept(headers: &HeaderMap) -> Encoding {  in from_accept()
380 fn encode_trailers(trailers: HeaderMap) -> Vec<u8> {  in encode_trailers()
390 fn decode_trailers_frame(mut buf: Bytes) -> Result<Option<HeaderMap>, Status> {  in decode_trailers_frame()  argument
398     let mut map = HeaderMap::new();  in decode_trailers_frame()
446 fn make_trailers_frame(trailers: HeaderMap) -> Bytes {  in make_trailers_frame()
524         let mut headers = HeaderMap::new();  in encoding_constructors()
537         let mut headers = HeaderMap::new();  in decode_trailers()
640         let mut expected = HeaderMap::new();  in decode_multiple_trailers()
657         let mut expected = HeaderMap::new();  in decode_trailers_with_space_after_colon()