@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm !!!!C# Signature: [DllImport("ws2_32.dll")] public static extern int SendTo (IntPtr Socket, IntPtr buff, int len, SendDataFlags flags, ref SockAddr To, int tomlen); !!!!VB Signature: !!!!User-Defined Types: [Flags] public enum SendDataFlags { /// <summary></summary> None = 0, /// <summary> Specifies that the data should not be subject to routing. A Windows Sockets service provider can choose to ignore this flag</summary> DontRoute = 1, /// <summary>Sends OOB data (stream-style socket such as SOCK_STREAM only)</summary> OOB = 2 } /// <summary>Структура адреса для сокета</summary> [StructLayout(LayoutKind.Sequential)] public struct SockAddr { /// <summary>Семейство протоколов</summary> public short Family; /// <summary>Номер порта для сокета</summary> public ushort Port; /// <summary>Локальный IP адрес сокета</summary> public AddressIP4 IPAddress; /// <summary>8 байт для выравнивания структуры</summary> private Int64 Zero; public SockAddr (short Family, ushort Port, AddressIP4 IP) { this.Family = Family; this.Port = Port; this.IPAddress = IP; this.Zero = 0; } } /// <summary>IP адресс</summary> [StructLayout(LayoutKind.Sequential)] public struct AddressIP4 { /// <summary>Первый байт IP адреса</summary> public byte a1; /// <summary>Второй байт IP адреса</summary> public byte a2; /// <summary>Третий байт IP адреса</summary> public byte a3; /// <summary>Четвертый байт IP адреса</summary> public byte a4; /// <summary>Широковещательный IP адрес</summary> public static AddressIP4 Broadcast { get { return new AddressIP4 (255,255,255,255); } } /// <summary>Любой IP адрес</summary> public static AddressIP4 AnyAddress { get { return new AddressIP4 (0,0,0,0); } } /// <summary>IP адрес локального хоста</summary> public static AddressIP4 Loopback { get { return new AddressIP4 (127,0,0,1); } } public AddressIP4 (byte a1, byte a2, byte a3, byte a4) { this.a1 = a1; this.a2 = a2; this.a3 = a3; this.a4 = a4; } } !!!!Alternative Managed API: System.Net.Sockets.Socket (class) Socket.SendTo () - better to use It)) !!!!Notes: Return Value English: If no error occurs, sendto returns the total number of bytes sent, which can be less than the number indicated by len. Otherwise, a value of SOCKET_ERROR is returned, and a specific error code can be retrieved by calling WSAGetLastError. Russian: Если возвращенное значение меньше чем len, то функция завершилась ошибкой, код которой вы можете узнав вызвав WSAGetLastError. !!!!Tips & Tricks: Please add some! !!!!Sample Code: Фиг вам.. Documentation: http://msdn.microsoft.com/en-us/library/ms740148(VS.85).aspx
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