Network

1 対 1 の TCP 通信

サーバ側

# include <Siv3D.hpp>

void Main()
{
    constexpr uint16 port = 50000;
    bool connected = false;

    TCPServer server;
    server.startAccept(port);
    Window::SetTitle(U"TCPServer: Waiting for connection...");

    Point clientPlayerPos(0, 0);

    while (System::Update())
    {
        const Point serverPlayerPos = Cursor::Pos();

        if (server.hasSession())
        {
            if (!connected) // クライアントが接続
            {
                connected = true;

                Window::SetTitle(U"TCPServer: Connection established!");
            }

            // 送信
            server.send(serverPlayerPos);

            // 受信
            while (server.read(clientPlayerPos));
        }

        // クライアントが切断
        if (connected && !server.hasSession())
        {
            // 切断
            server.disconnect();

            connected = false;

            Window::SetTitle(U"TCPServer: Waiting for connection...");

            server.startAccept(port);
        }

        Circle(serverPlayerPos, 30).draw(Palette::Skyblue);

        Circle(clientPlayerPos, 10).draw(Palette::Orange);
    }
}

クライアント側

# include <Siv3D.hpp>

void Main()
{
    const IPv4 ip = IPv4::Localhost();
    constexpr uint16 port = 50000;
    bool connected = false;

    TCPClient client;
    client.connect(ip, port);
    Window::SetTitle(U"TCPServer: Waiting for connection...");

    Point serverPlayerPos(0, 0);

    while (System::Update())
    {
        const Point clientPlayerPos = Cursor::Pos();

        if (client.isConnected())
        {
            if (!connected)
            {
                connected = true;

                Window::SetTitle(U"TCPClient: Connection established!");
            }

            // 送信
            client.send(clientPlayerPos);

            // 受信
            while (client.read(serverPlayerPos));
        }

        if (client.hasError()) // 切断/接続エラー
        {
            client.disconnect();

            connected = false;

            Window::SetTitle(U"TCPClient: Waiting for connection...");

            client.connect(ip, port);
        }

        Circle(clientPlayerPos, 30).draw(Palette::Skyblue);

        Circle(serverPlayerPos, 30).draw(Palette::Orange);
    }
}