http-client: Accept #:open-connection in http-fetch.

So that an alternative procedure can be passed in, perhaps to perform
connection caching.

* guix/http-client.scm (http-fetch): Add an #:open-connection keyword
argument.

1 files changed, 5 insertions, 4 deletions

diff --git a/guix/http-client.scm b/guix/http-client.scm
index 3aba3b28c1..2d7458a56e 100644
--- a/guix/http-client.scm
+++ b/guix/http-client.scm
@@ -75,6 +75,7 @@
 
 
 (define* (http-fetch uri #:key port (text? #f) (buffered? #t)
+                     (open-connection guix:open-connection-for-uri)
                      (keep-alive? #f)
                      (verify-certificate? #t)
                      (headers '((user-agent . "GNU Guile")))
@@ -97,10 +98,10 @@ Raise an '&http-get-error' condition if downloading fails."
   (let loop ((uri (if (string? uri)
                       (string->uri uri)
                       uri)))
-    (let ((port (or port (guix:open-connection-for-uri uri
-                                                       #:verify-certificate?
-                                                       verify-certificate?
-                                                       #:timeout timeout)))
+    (let ((port (or port (open-connection uri
+                                          #:verify-certificate?
+                                          verify-certificate?
+                                          #:timeout timeout)))
           (headers (match (uri-userinfo uri)
                      ((? string? str)
                       (cons (cons 'Authorization