Set Host header when redirecting cross-origin (#321)

diff --git a/httpx/middleware.py b/httpx/middleware.py
index aa994dba58e958dbc22a9c39977a2773db0f7504..dd23ac2a72d8c9608a285b1d137e239775177551 100644 (file)
--- a/httpx/middleware.py
+++ b/httpx/middleware.py
@@ -148,7 +148,7 @@ class RedirectMiddleware(BaseMiddleware):
             # Strip Authorization headers when responses are redirected away from
             # the origin.
             del headers["Authorization"]
-            del headers["Host"]
+            headers["Host"] = url.authority
 
         if method != request.method and method == "GET":
             # If we've switch to a 'GET' request, then strip any headers which