6 use http::{header, HeaderMap, HeaderValue, Method, Request, Response, StatusCode, Version};
100                 debug!(kind = "other h2", content_type = ?req.headers().get(header::CONTENT_TYPE));  in call()
110                 debug!(kind = "other h1", content_type = ?req.headers().get(header::CONTENT_TYPE));  in call()
211     req.headers_mut().remove(header::CONTENT_LENGTH);  in coerce_request()
214         .insert(header::CONTENT_TYPE, GRPC_CONTENT_TYPE);  in coerce_request()
217         .insert(header::TE, HeaderValue::from_static("trailers"));  in coerce_request()
220         header::ACCEPT_ENCODING,  in coerce_request()
237         header::CONTENT_TYPE,  in coerce_response()
248     use http::header::{
294                 .header(CONTENT_TYPE, GRPC_WEB)  in request()
295                 .header(ORIGIN, "http://example.com")  in request()
375                 .header(ORIGIN, "http://example.com")  in request()
376                 .header(ACCESS_CONTROL_REQUEST_HEADERS, "x-grpc-web")  in request()
377                 .header(ACCESS_CONTROL_REQUEST_METHOD, "POST")  in request()
397                 .header(CONTENT_TYPE, GRPC_CONTENT_TYPE)  in request()
417                 .header(CONTENT_TYPE, GRPC_CONTENT_TYPE)  in h1_is_err()
448                 .header(CONTENT_TYPE, "application/text")  in request()