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47 lines
1.9 KiB
C#
47 lines
1.9 KiB
C#
using System;
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namespace Rssdp
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{
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/// <summary>
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/// Event arguments for the <see cref="Infrastructure.SsdpDeviceLocatorBase.DeviceUnavailable"/> event.
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/// </summary>
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public sealed class DeviceUnavailableEventArgs : EventArgs
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{
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private readonly DiscoveredSsdpDevice _DiscoveredDevice;
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private readonly bool _Expired;
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/// <summary>
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/// Full constructor.
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/// </summary>
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/// <param name="discoveredDevice">A <see cref="DiscoveredSsdpDevice"/> instance representing the device that has become unavailable.</param>
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/// <param name="expired">A boolean value indicating whether this device is unavailable because it expired, or because it explicitly sent a byebye notification.. See <see cref="Expired"/> for more detail.</param>
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/// <exception cref="ArgumentNullException">Thrown if the <paramref name="discoveredDevice"/> parameter is null.</exception>
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public DeviceUnavailableEventArgs(DiscoveredSsdpDevice discoveredDevice, bool expired)
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{
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if (discoveredDevice == null)
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{
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throw new ArgumentNullException(nameof(discoveredDevice));
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}
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_DiscoveredDevice = discoveredDevice;
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_Expired = expired;
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}
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/// <summary>
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/// Returns true if the device is considered unavailable because it's cached information expired before a new alive notification or search result was received. Returns false if the device is unavailable because it sent an explicit notification of it's unavailability.
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/// </summary>
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public bool Expired
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{
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get { return _Expired; }
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}
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/// <summary>
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/// A reference to a <see cref="DiscoveredSsdpDevice"/> instance containing the discovery details of the removed device.
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/// </summary>
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public DiscoveredSsdpDevice DiscoveredDevice
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{
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get { return _DiscoveredDevice; }
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}
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}
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}
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