Set headers for CURL so that proxies won't cache files

to fix bug that causes resources2.txt to be old and
out of sync with the files in the directory.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/gui/updatewindow.cpp b/src/gui/updatewindow.cpp
index d8f23171..90cd66da 100644
--- a/src/gui/updatewindow.cpp
+++ b/src/gui/updatewindow.cpp
@@ -317,6 +317,13 @@ int UpdaterWindow::downloadThread(void *ptr)
             curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
             curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 15);
 
+            /*caching breaks things when resources2.txt is cached
+             *so caching is turned off on the proxy with this header
+             *change*/
+            struct curl_slist *pHeaders=NULL;
+            pHeaders = curl_slist_append(pHeaders, "pragma: no-cache");  
+            curl_easy_setopt(curl, CURLOPT_HTTPHEADER, pHeaders); 
+
             if ((res = curl_easy_perform(curl)) != 0)
             {
                 uw->mDownloadStatus = UPDATE_ERROR;
@@ -341,6 +348,8 @@ int UpdaterWindow::downloadThread(void *ptr)
 
             curl_easy_cleanup(curl);
 
+            curl_slist_free_all(pHeaders); 
+
             if (!uw->mStoreInMemory)
             {
                 // Don't check resources2.txt checksum