gDataInputStreamReadUntil.
It is an error to have two outstanding calls to this function.gDataInputStreamReadUntilAsync(object, stop.chars, io.priority, cancellable = NULL, callback, user.data = NULL)objectGDataInputStream.stop.charsio.prioritycancellableGCancellable object, NULL to ignore.callbackuser.datacallback will be called. You
can then call gDataInputStreamReadUntilFinish to get
the result of the operation.
Since 2.20