I'd like to propose httpup not to use cached results for ports as recent changes can sometimes return stale results, for those behind transparent proxies.

This patch resolves my problems. I have control over 1 transparent proxy that I have here but I also have another transparent proxy in Melbourne that I can not do anything about, other than not use cached files, hence this patch.

diff -pruN httpup-0.4.0k.orig/httpup.cpp httpup-0.4.0k/httpup.cpp
--- httpup-0.4.0k.orig/httpup.cpp 2012-04-19 12:49:15.722730627 +0000
+++ httpup-0.4.0k/httpup.cpp 2012-04-19 12:53:23.280723487 +0000
@@ -227,7 +227,12 @@ int HttpUp::exec(ExecType type)
curl_global_init(CURL_GLOBAL_ALL);
curl = curl_easy_init();

+ struct curl_slist *headers=NULL;
+ headers = curl_slist_append(headers, "Cache-Control: no-cache, must-revalidate");
+ headers = curl_slist_append(headers, "Pragma: no-cache");
+
char errorBuffer[CURL_ERROR_SIZE];
+ curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errorBuffer);
curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1);
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);