Bagikan melalui


Socket.Ttl Properti

Definisi

Mendapatkan atau menetapkan nilai yang menentukan nilai Time To Live (TTL) paket Protokol Internet (IP) yang dikirim oleh Socket.

public:
 property short Ttl { short get(); void set(short value); };
public short Ttl { get; set; }
member this.Ttl : int16 with get, set
Public Property Ttl As Short

Nilai Properti

Nilai TTL.

Pengecualian

Nilai TTL adalah angka negatif.

Soket tidak ada dalam InterNetwork keluarga atau InterNetworkV6 .

Terjadi kesalahan saat mencoba mengakses soket. Kesalahan ini juga dikembalikan ketika upaya dilakukan untuk mengatur TTL ke nilai yang lebih tinggi dari 255.

Contoh

Contoh kode berikut menunjukkan penggunaan Ttl properti .

static void ConfigureTcpSocket(Socket^ tcpSocket)
{
     
    // Don't allow another socket to bind to this port.
    tcpSocket->ExclusiveAddressUse = true;
     
    // The socket will linger for 10 seconds after
    // Socket.Close is called.
    tcpSocket->LingerState = gcnew LingerOption(true, 10);
     
    // Disable the Nagle Algorithm for this tcp socket.
    tcpSocket->NoDelay = true;
     
    // Set the receive buffer size to 8k
    tcpSocket->ReceiveBufferSize = 8192;
     
    // Set the timeout for synchronous receive methods to
    // 1 second (1000 milliseconds.)
    tcpSocket->ReceiveTimeout = 1000;
     
    // Set the send buffer size to 8k.
    tcpSocket->SendBufferSize = 8192;
     
    // Set the timeout for synchronous send methods
    // to 1 second (1000 milliseconds.)
    tcpSocket->SendTimeout = 1000;
     
    // Set the Time To Live (TTL) to 42 router hops.
    tcpSocket->Ttl = 42;
    Console::WriteLine("Tcp Socket configured:");
    Console::WriteLine("  ExclusiveAddressUse {0}", 
        tcpSocket->ExclusiveAddressUse);
    Console::WriteLine("  LingerState {0}, {1}", 
        tcpSocket->LingerState->Enabled,
        tcpSocket->LingerState->LingerTime);
    Console::WriteLine("  NoDelay {0}",
        tcpSocket->NoDelay);
    Console::WriteLine("  ReceiveBufferSize {0}", 
        tcpSocket->ReceiveBufferSize);
    Console::WriteLine("  ReceiveTimeout {0}",
        tcpSocket->ReceiveTimeout);
    Console::WriteLine("  SendBufferSize {0}",
        tcpSocket->SendBufferSize);
    Console::WriteLine("  SendTimeout {0}",
        tcpSocket->SendTimeout);
    Console::WriteLine("  Ttl {0}",
        tcpSocket->Ttl);
    Console::WriteLine("  IsBound {0}",
        tcpSocket->IsBound);
    Console::WriteLine("");
}
static void ConfigureTcpSocket(Socket tcpSocket)
{
    // Don't allow another socket to bind to this port.
    tcpSocket.ExclusiveAddressUse = true;

    // The socket will linger for 10 seconds after
    // Socket.Close is called.
    tcpSocket.LingerState = new LingerOption (true, 10);

    // Disable the Nagle Algorithm for this tcp socket.
    tcpSocket.NoDelay = true;

    // Set the receive buffer size to 8k
    tcpSocket.ReceiveBufferSize = 8192;

    // Set the timeout for synchronous receive methods to
    // 1 second (1000 milliseconds.)
    tcpSocket.ReceiveTimeout = 1000;

    // Set the send buffer size to 8k.
    tcpSocket.SendBufferSize = 8192;

    // Set the timeout for synchronous send methods
    // to 1 second (1000 milliseconds.)
    tcpSocket.SendTimeout = 1000;

    // Set the Time To Live (TTL) to 42 router hops.
    tcpSocket.Ttl = 42;

    Console.WriteLine("Tcp Socket configured:");

    Console.WriteLine($"  ExclusiveAddressUse {tcpSocket.ExclusiveAddressUse}");

    Console.WriteLine($"  LingerState {tcpSocket.LingerState.Enabled}, {tcpSocket.LingerState.LingerTime}");

    Console.WriteLine($"  NoDelay {tcpSocket.NoDelay}");

    Console.WriteLine($"  ReceiveBufferSize {tcpSocket.ReceiveBufferSize}");

    Console.WriteLine($"  ReceiveTimeout {tcpSocket.ReceiveTimeout}");

    Console.WriteLine($"  SendBufferSize {tcpSocket.SendBufferSize}");

    Console.WriteLine($"  SendTimeout {tcpSocket.SendTimeout}");

    Console.WriteLine($"  Ttl {tcpSocket.Ttl}");

    Console.WriteLine($"  IsBound {tcpSocket.IsBound}");

    Console.WriteLine("");
}

Keterangan

Nilai TTL menunjukkan jumlah maksimum router yang dapat dilalui paket sebelum perute membuang paket dan pesan kesalahan Internet Control Message Protocol (ICMP) "TTL terlampaui" dikembalikan ke pengirim.

Nilai TTL dapat diatur ke nilai dari 0 hingga 255. Ketika properti ini tidak diatur, nilai TTL default untuk soket adalah 32.

Mengatur properti ini pada soket Protokol Kendali Transmisi (TCP) diabaikan oleh tumpukan TCP/IP jika koneksi yang berhasil dibuat menggunakan soket.

Jika Anda menerima SocketException, gunakan SocketException.ErrorCode properti untuk mendapatkan kode kesalahan tertentu. Setelah Anda mendapatkan kode ini, lihat dokumentasi kode kesalahan API Windows Sockets versi 2 untuk deskripsi terperinci tentang kesalahan tersebut.

Berlaku untuk