msg->u.ask_channel.chan_id = chan_id;
msg->u.ask_channel.tracefile_size = tracefile_size;
msg->u.ask_channel.tracefile_count = tracefile_count;
msg->u.ask_channel.chan_id = chan_id;
msg->u.ask_channel.tracefile_size = tracefile_size;
msg->u.ask_channel.tracefile_count = tracefile_count;