fix host spoofing for redirects

src/request.rs

@@ -148,18 +148,16 @@ impl Request {
 
         let request_fn = |req: Request| {
             let reader = payload.into_read();
-            let mut unit = Unit::new(
+            let unit = Unit::new(
                 &req.agent,
                 &req.method,
                 &url,
                 req.headers,
                 &reader,
                 deadline,
+                req.spoofed_host
             );
 
-            // forward the spoofed host address
-            unit.spoofed_host = req.spoofed_host;
-
             unit::connect(unit, true, reader).map_err(|e| e.url(url.clone()))
         };
 

src/response.rs

@@ -767,6 +767,7 @@ impl FromStr for Response {
             vec![],
             &request_reader,
             None,
+            None
         );
         Self::do_from_stream(stream, unit)
     }
@@ -1151,6 +1152,7 @@ mod tests {
             vec![],
             &request_reader,
             None,
+            None,
         );
         let resp = Response::do_from_stream(s.into(), unit).unwrap();
         assert_eq!(resp.status(), 200);
@@ -1215,6 +1217,7 @@ mod tests {
                 vec![],
                 &Payload::Empty.into_read(),
                 None,
+                None,
             ),
         )
         .unwrap();
@@ -1247,6 +1250,7 @@ mod tests {
                 vec![],
                 &Payload::Empty.into_read(),
                 None,
+                None,
             ),
         )
         .unwrap();

src/unit.rs

@@ -46,8 +46,8 @@ impl Unit {
         mut headers: Vec<Header>,
         body: &SizedReader,
         deadline: Option<time::Instant>,
+        spoofed_host: Option<Cow<'static, str>>,
     ) -> Self {
-        //
 
         let (is_transfer_encoding_set, mut is_chunked) = get_header(&headers, "transfer-encoding")
             // if the user has set an encoding header, obey that.
@@ -110,7 +110,7 @@ impl Unit {
             is_chunked,
             headers,
             deadline,
-            spoofed_host: None,
+            spoofed_host,
         }
     }
 
@@ -227,6 +227,8 @@ pub(crate) fn connect(
                 && (!h.is_name("authorization") || keep_auth_header)
         });
 
+
+
         // recreate the unit to get a new hostname and cookies for the new host.
         unit = Unit::new(
             &unit.agent,
@@ -235,6 +237,7 @@ pub(crate) fn connect(
             headers,
             &body,
             unit.deadline,
+            unit.spoofed_host
         );
     };
     resp.history = history;