Creates a #GSource that triggers when @stream can be written, or
@cancellable is triggered or an error occurs. The callback on the
source is of the #GPollableSourceFunc type.
As with g_pollable_output_stream_is_writable(), it is possible that
the stream may not actually be writable even after the source
triggers, so you should use g_pollable_output_stream_write_nonblocking()
rather than g_output_stream_write() from the callback.
Creates a #GSource that triggers when @stream can be written, or @cancellable is triggered or an error occurs. The callback on the source is of the #GPollableSourceFunc type.
As with g_pollable_output_stream_is_writable(), it is possible that the stream may not actually be writable even after the source triggers, so you should use g_pollable_output_stream_write_nonblocking() rather than g_output_stream_write() from the callback.