ObjFW  Diff

 * @param length The length of the data that should be written
 * @param target The target on which the selector should be called when the
 *		 data has been written. The method should return the length for
 *		 the next write with the same callback or 0 if it should not
 *		 repeat. The buffer may be changed, so that every time a new
 *		 buffer and length can be specified while the callback stays
 *		 the same.
 * @param selector The selector to call on the target. The signature must be
 *		   `size_t (OFStream *stream, const void *buffer,
 *		   size_t bytesWritten, id context, id exception)`.
 * @param selector The selector to call on the target. It should return the
 *		   length for the next write with the same callback or 0 if it
 *		   should not repeat. The signature must be `size_t (OFStream
 *		   *stream, const void *buffer, size_t bytesWritten, id
 *		   context, id exception)`.
 * @param context A context object to pass along to the target
 */
- (void)asyncWriteBuffer: (const void *)buffer
		  length: (size_t)length
		  target: (id)target
		selector: (SEL)selector
		 context: (nullable id)context;