95 lines
2.8 KiB
C#
95 lines
2.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Net.Http;
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using System.Text;
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using System.Threading.Tasks;
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using System.Net.Http.Headers;
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namespace Rssdp
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{
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/// <summary>
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/// Represents a discovered device, containing basic information about the device and the location of it's full device description document. Also provides convenience methods for retrieving the device description document.
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/// </summary>
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/// <seealso cref="SsdpDevice"/>
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/// <seealso cref="Rssdp.Infrastructure.ISsdpDeviceLocator"/>
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public sealed class DiscoveredSsdpDevice
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{
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#region Fields
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private DateTimeOffset _AsAt;
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#endregion
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#region Public Properties
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/// <summary>
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/// Sets or returns the type of notification, being either a uuid, device type, service type or upnp:rootdevice.
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/// </summary>
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public string NotificationType { get; set; }
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/// <summary>
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/// Sets or returns the universal service name (USN) of the device.
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/// </summary>
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public string Usn { get; set; }
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/// <summary>
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/// Sets or returns a URL pointing to the device description document for this device.
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/// </summary>
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public Uri DescriptionLocation { get; set; }
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/// <summary>
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/// Sets or returns the length of time this information is valid for (from the <see cref="AsAt"/> time).
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/// </summary>
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public TimeSpan CacheLifetime { get; set; }
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/// <summary>
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/// Sets or returns the date and time this information was received.
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/// </summary>
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public DateTimeOffset AsAt
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{
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get { return _AsAt; }
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set
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{
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if (_AsAt != value)
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{
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_AsAt = value;
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}
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}
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}
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/// <summary>
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/// Returns the headers from the SSDP device response message
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/// </summary>
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public HttpHeaders ResponseHeaders { get; set; }
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#endregion
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#region Public Methods
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/// <summary>
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/// Returns true if this device information has expired, based on the current date/time, and the <see cref="CacheLifetime"/> & <see cref="AsAt"/> properties.
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/// </summary>
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/// <returns></returns>
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public bool IsExpired()
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{
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return this.CacheLifetime == TimeSpan.Zero || this.AsAt.Add(this.CacheLifetime) <= DateTimeOffset.Now;
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}
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#endregion
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#region Overrides
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/// <summary>
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/// Returns the device's <see cref="Usn"/> value.
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/// </summary>
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/// <returns>A string containing the device's universal service name.</returns>
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public override string ToString()
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{
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return this.Usn;
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}
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#endregion
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}
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}
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