http: avoid empty error messages for some curl errors

diff --git a/http.c b/http.c
index 74197519b16994bc8bd67a1de00da476cc5df9e1..61a90896ecb154089ef77756c1cfa8b03f524170 100644 (file)
--- a/http.c
+++ b/http.c
@@ -846,8 +846,13 @@ static int http_request(const char *url, void *result, int target, int options)
                                init_curl_http_auth(slot->curl);
                                ret = HTTP_REAUTH;
                        }
-               } else
+               } else {
+                       if (!curl_errorstr[0])
+                               strlcpy(curl_errorstr,
+                                       curl_easy_strerror(results.curl_result),
+                                       sizeof(curl_errorstr));
                        ret = HTTP_ERROR;
+               }
        } else {
                error("Unable to start HTTP request for %s", url);
                ret = HTTP_START_FAILED;