Splices a stream asynchronously.
When the operation is finished callback will be called. You can then call splice_async.end
to get the result of the operation.
For the synchronous, blocking version of this function, see splice.
| this |
a OutputStream. |
| source |
a InputStream. |
| flags |
a set of OutputStreamSpliceFlags. |
| io_priority |
the io priority of the request. |
| cancellable |
optional Cancellable object, null to ignore. |
| callback | |
| user_data |
user data passed to |