ccs_pipe_copy
err = ccs_pipe_copy (&callback->client_pipe, in_client_pipe);
err = ccs_pipe_copy (&callback->reply_pipe, in_reply_pipe);
err = ccs_pipe_copy (&client->client_pipe, in_client_pipe);
err = ccs_pipe_copy (&list_iterator->client_pipe, in_client_pipe);
cc_int32 ccs_pipe_copy (ccs_pipe_t *out_pipe,
ccs_pipe_copy(&pipe2, pipe);