[PATCH 2/3] http: Avoid limit of retrying request only twice

From: Jeff King <redacted>

Current code, after receiving HTTP_REAUTH, only retried
once, so couldn't do step 3 of the following sequence:

  1. We make a request; proxy returns 407, because we didn't give it a
     password. We ask for the password and return HTTP_REAUTH.

  2. We make another request; the proxy passes it to the actual server,
     who returns 401, because we didn't give an http password. We ask
     for the password and return HTTP_REAUTH.

  3. We make a third request, but this time everybody is happy.

Now we retry as long as we keep receiving HTTP_REAUTH, so the previous
sequence correctly completes.

Patch by Jeff King [off-list ref]

Signed-off-by: Nelson Benitez Leon <redacted>
Signed-off-by: Junio C Hamano <redacted>
---
 http.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/http.c b/http.c
index 624d1a0..d34d741 100644
--- a/http.c
+++ b/http.c

@@ -852,10 +852,13 @@ static int http_request(const char *url, void *result, int target, int options)
 static int http_request_reauth(const char *url, void *result, int target,
 			       int options)
 {
-	int ret = http_request(url, result, target, options);
-	if (ret != HTTP_REAUTH)
-		return ret;
-	return http_request(url, result, target, options);
+	int ret;
+
+	do {
+		ret = http_request(url, result, target, options);
+	} while (ret == HTTP_REAUTH);
+
+	return ret;
 }
 
 int http_get_strbuf(const char *url, struct strbuf *result, int options)

-- 
1.7.7.6