@@ -94,24 +94,29 @@
 	OFFreeMemory(_writeBuffer);
 
 	[super dealloc];
 }
 
-- (bool)lowlevelIsAtEndOfStream
-{
-	OF_UNRECOGNIZED_SELECTOR
-}
-
 - (size_t)lowlevelReadIntoBuffer: (void *)buffer length: (size_t)length
 {
 	OF_UNRECOGNIZED_SELECTOR
 }
 
 - (size_t)lowlevelWriteBuffer: (const void *)buffer length: (size_t)length
 {
 	OF_UNRECOGNIZED_SELECTOR
 }
+
+- (bool)lowlevelIsAtEndOfStream
+{
+	OF_UNRECOGNIZED_SELECTOR
+}
+
+- (bool)lowlevelHasDataInReadBuffer
+{
+	return false;
+}
 
 - (id)copy
 {
 	return [self retain];
 }
@@ -1184,11 +1189,11 @@
 	}
 }
 
 - (bool)hasDataInReadBuffer
 {
-	return (_readBufferLength > 0);
+	return (_readBufferLength > 0 || [self lowlevelHasDataInReadBuffer]);
 }
 
 - (bool)canBlock
 {
 	return _canBlock;