You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: connect.rs
    path of file: ./repos/snarkOS/node/router/tests
    
    the code of the file until where you have to start completion: // Copyright (C) 2019-2023 Aleo Systems Inc.
// This file is part of the snarkOS library.

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distrib
    
async fn test_connect_with_handshake() {
    // Create 2 routers.
    let node0 = validator(0, 2).await;
    let node1 = client(0, 2).await;
    assert_eq!(node0.number_of_connected_peers(), 0);
    assert_eq!(node1.number_of_connected_peers(), 0);

    // Enable handshake protocol.
    node0.enable_handshake().await;
    node1.enable_handshake().await;

    // Start listening.
    node0.tcp().enable_listener().await.unwrap();
    node1.tcp().enable_listener().await.unwrap();

    {
        // Connect node0 to node1.
        node0.connect(node1.local_ip());
        // Sleep briefly.
        tokio::time::sleep(Duration::from_millis(200)).await;

        print_tcp!(node0);
        print_tcp!(node1);

        // Check the TCP level.
        assert_eq!(node0.tcp().num_connected(), 1);
        assert_eq!(node0.tcp().num_connecting(), 0);
        assert_eq!(node1.tcp().num_connected(), 1);
        assert_eq!(node1.tcp().num_connecting(), 0);

        // Check the router level.
        assert_eq!(node0.number_of_connected_peers(), 1);
        assert_eq!(node1.number_of_connected_peers(), 1);
    }
    {
        // Connect node0 to node1 again.
        node0.connect(node1.local_ip());
        // Sleep briefly.
        tokio::time::sleep(Duration::from_millis(100)).await;

        print_tcp!(node0);
        print_tcp!(node1);

        // Check the TCP level.
        assert_eq!(node0.tcp().num_connected(), 1);
        assert_eq!(node0.tcp().num_connecting(), 0);
        assert_eq!(node1.tcp().num_connected(), 1);
        assert_eq!(node1.tcp().num_connecting(), 0);

        // Check the router level.
        assert_eq!(node0.number_of_connected_peers(), 1);
        assert_eq!(node1.number_of_connected_peers(), 1);
    }
    {
        // Connect node1 to node0.
        node1.connect(node0.local_ip());
        // Sleep briefly.
        tokio::time::sleep(Duration::from_millis(100)).await;

        print_tcp!(node0);
        print_tcp!(node1);

        // Check the TCP level.
        assert_eq!(node0.tcp().num_connected(), 1);
        assert_eq!(node0.tcp().num_connecting(), 0);
        assert_eq!(node1.tcp().num_connected(), 1);
        assert_eq!(node1.tcp().num_connecting(), 0);

        // Check the router level.
        assert_eq!(node0.number_of_connected_peers(), 1);
        assert_eq!(node1.number_of_connected_peers(), 1);
    }
}