Merge pull request 'if a redirect with a body is provided, we need to skip the body' (!2) from fixes into main

Reviewed-on: #2

src/http_mirage_client.ml

@@ -434,6 +434,12 @@ let request
     let rec follow_redirect count uri =
       if count = 0 then Lwt.return_error (`Msg "Redirect limit exceeded")
       else
+        let f response acc body =
+          if Status.is_redirection response.status then
+            Lwt.return acc
+          else
+            f response acc body
+        in
         single_request ~ctx ~alpn_protocol ?config tls_config ~meth ~headers
           ?body uri f f_init
         >>? fun (resp, body) ->

src/http_mirage_client.mli

@@ -40,4 +40,6 @@ val request :
      ~max_redirect ~follow_redirect url body_f body_init] does a HTTP request
     to [url] using [meth] and the HTTP protocol in [config]. The response is
     the value of this function. The body is provided in chunks (see [body_f]).
+    If [follow_redirect] is enabled (true by default), [body_f] is not called
+    with the potential body of the redirection.
     Reasonably defaults are used if not provided. *)