add etag support and if-none-match/if-modified-since to cocoa http handling

1 files changed, 5 insertions, 3 deletions

diff --git a/common/ios.mm b/common/ios.mm
index 1076343e24..7989e73a4e 100644
--- a/common/ios.mm
+++ b/common/ios.mm
@@ -8,12 +8,14 @@ namespace platform {
 // Returns the path to the default cache database on this system.
 std::string defaultCacheDatabase() {
     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
+    if ([paths count] == 0) {
+        // Disable the cache if we don't have a location to write.
+        return "";
+    }
+
     NSString *libraryDirectory = [paths objectAtIndex:0];
     return [[libraryDirectory stringByAppendingPathComponent:@"cache.db"] UTF8String];
 }
 
 }
 }
-
-
-// Returns the path to the default cache database on this system.