chore: change mod name

rpxy-lib/src/message_handler/synthetic_response.rs

@@ -0,0 +1,57 @@
+use crate::{
+  error::*,
+  hyper_ext::body::{empty, BoxBody, IncomingOr},
+  name_exp::ServerName,
+};
+use http::{Request, Response, StatusCode, Uri};
+use hyper::body::Incoming;
+
+use super::http_result::{HttpError, HttpResult};
+
+/// helper function to build http response with passthrough body
+pub(crate) fn passthrough_response<B>(response: Response<Incoming>) -> Response<IncomingOr<B>>
+where
+  B: hyper::body::Body,
+{
+  response.map(IncomingOr::Left)
+}
+
+/// helper function to build http response with synthetic body
+pub(crate) fn synthetic_response<B>(response: Response<B>) -> Response<IncomingOr<B>> {
+  response.map(IncomingOr::Right)
+}
+
+/// build http response with status code of 4xx and 5xx
+pub(crate) fn synthetic_error_response(status_code: StatusCode) -> RpxyResult<Response<IncomingOr<BoxBody>>> {
+  let res = Response::builder()
+    .status(status_code)
+    .body(IncomingOr::Right(empty()))
+    .unwrap();
+  Ok(res)
+}
+
+/// Generate synthetic response message of a redirection to https host with 301
+pub(super) fn secure_redirection_response<B>(
+  server_name: &ServerName,
+  tls_port: Option<u16>,
+  req: &Request<B>,
+) -> HttpResult<Response<IncomingOr<BoxBody>>> {
+  let server_name: String = server_name.try_into().unwrap_or_default();
+  let pq = match req.uri().path_and_query() {
+    Some(x) => x.as_str(),
+    _ => "",
+  };
+  let new_uri = Uri::builder().scheme("https").path_and_query(pq);
+  let dest_uri = match tls_port {
+    Some(443) | None => new_uri.authority(server_name),
+    Some(p) => new_uri.authority(format!("{server_name}:{p}")),
+  }
+  .build()
+  .map_err(|e| HttpError::FailedToRedirect(e.to_string()))?;
+  let response = Response::builder()
+    .status(StatusCode::MOVED_PERMANENTLY)
+    .header("Location", dest_uri.to_string())
+    .body(IncomingOr::Right(empty()))
+    .map_err(|e| HttpError::FailedToRedirect(e.to_string()))?;
+  Ok(response)
+}