[downloader] Fix issue when url download failed. Use default server urls.

1 files changed, 54 insertions, 0 deletions

diff --git a/platform/servers_list.cpp b/platform/servers_list.cpp
new file mode 100644
index 0000000000..44d326c536
--- /dev/null
+++ b/platform/servers_list.cpp
@@ -0,0 +1,54 @@
+#include "servers_list.hpp"
+#include "http_request.hpp"
+#include "settings.hpp"
+#include "platform.hpp"
+
+#include "../base/logging.hpp"
+#include "../base/assert.hpp"
+
+#include "../3party/jansson/myjansson.hpp"
+
+
+#define SETTINGS_SERVERS_KEY "LastBaseUrls"
+
+
+namespace downloader
+{
+
+bool ParseServerList(string const & jsonStr, vector<string> & outUrls)
+{
+  outUrls.clear();
+  try
+  {
+    my::Json root(jsonStr.c_str());
+    for (size_t i = 0; i < json_array_size(root); ++i)
+    {
+      char const * url = json_string_value(json_array_get(root, i));
+      if (url)
+        outUrls.push_back(url);
+    }
+  }
+  catch (std::exception const & e)
+  {
+    LOG(LERROR, ("Can't parse server list json", e.what(), jsonStr));
+  }
+  return !outUrls.empty();
+}
+
+void GetServerListFromRequest(HttpRequest const & request, vector<string> & urls)
+{
+  if (request.Status() == HttpRequest::ECompleted &&
+      ParseServerList(request.Data(), urls))
+  {
+    Settings::Set(SETTINGS_SERVERS_KEY, request.Data());
+  }
+  else
+  {
+    string serverList;
+    if (!Settings::Get(SETTINGS_SERVERS_KEY, serverList))
+      serverList = GetPlatform().DefaultUrlsJSON();
+    VERIFY ( ParseServerList(serverList, urls), () );
+  }
+}
+
+}