diff options
Diffstat (limited to 'RSSDP/SsdpDeviceLocator.cs')
| -rw-r--r-- | RSSDP/SsdpDeviceLocator.cs | 86 |
1 files changed, 46 insertions, 40 deletions
diff --git a/RSSDP/SsdpDeviceLocator.cs b/RSSDP/SsdpDeviceLocator.cs index 7afd32581..59f4c5070 100644 --- a/RSSDP/SsdpDeviceLocator.cs +++ b/RSSDP/SsdpDeviceLocator.cs @@ -1,11 +1,11 @@ using System; using System.Collections.Generic; +using System.Globalization; using System.Linq; using System.Net; using System.Net.Http; using System.Threading; using System.Threading.Tasks; - namespace Rssdp.Infrastructure { /// <summary> @@ -19,19 +19,27 @@ namespace Rssdp.Infrastructure private Timer _BroadcastTimer; private object _timerLock = new object(); + private string _OSName; + + private string _OSVersion; + private readonly TimeSpan DefaultSearchWaitTime = TimeSpan.FromSeconds(4); private readonly TimeSpan OneSecond = TimeSpan.FromSeconds(1); /// <summary> /// Default constructor. /// </summary> - public SsdpDeviceLocator(ISsdpCommunicationsServer communicationsServer) + public SsdpDeviceLocator( + ISsdpCommunicationsServer communicationsServer, + string osName, + string osVersion) { - if (communicationsServer == null) - { - throw new ArgumentNullException(nameof(communicationsServer)); - } + ArgumentNullException.ThrowIfNull(communicationsServer); + ArgumentNullException.ThrowIfNullOrEmpty(osName); + ArgumentNullException.ThrowIfNullOrEmpty(osVersion); + _OSName = osName; + _OSVersion = osVersion; _CommunicationsServer = communicationsServer; _CommunicationsServer.ResponseReceived += CommsServer_ResponseReceived; @@ -72,7 +80,7 @@ namespace Rssdp.Infrastructure { lock (_timerLock) { - if (_BroadcastTimer == null) + if (_BroadcastTimer is null) { _BroadcastTimer = new Timer(OnBroadcastTimerCallback, null, dueTime, period); } @@ -87,7 +95,7 @@ namespace Rssdp.Infrastructure { lock (_timerLock) { - if (_BroadcastTimer != null) + if (_BroadcastTimer is not null) { _BroadcastTimer.Dispose(); _BroadcastTimer = null; @@ -148,7 +156,7 @@ namespace Rssdp.Infrastructure private Task SearchAsync(string searchTarget, TimeSpan searchWaitTime, CancellationToken cancellationToken) { - if (searchTarget == null) + if (searchTarget is null) { throw new ArgumentNullException(nameof(searchTarget)); } @@ -187,7 +195,7 @@ namespace Rssdp.Infrastructure { _CommunicationsServer.RequestReceived -= CommsServer_RequestReceived; _CommunicationsServer.RequestReceived += CommsServer_RequestReceived; - _CommunicationsServer.BeginListeningForBroadcasts(); + _CommunicationsServer.BeginListeningForMulticast(); } /// <summary> @@ -211,7 +219,7 @@ namespace Rssdp.Infrastructure /// Raises the <see cref="DeviceAvailable"/> event. /// </summary> /// <seealso cref="DeviceAvailable"/> - protected virtual void OnDeviceAvailable(DiscoveredSsdpDevice device, bool isNewDevice, IPAddress IpAddress) + protected virtual void OnDeviceAvailable(DiscoveredSsdpDevice device, bool isNewDevice, IPAddress IPAddress) { if (this.IsDisposed) { @@ -219,11 +227,11 @@ namespace Rssdp.Infrastructure } var handlers = this.DeviceAvailable; - if (handlers != null) + if (handlers is not null) { handlers(this, new DeviceAvailableEventArgs(device, isNewDevice) { - RemoteIpAddress = IpAddress + RemoteIPAddress = IPAddress }); } } @@ -242,7 +250,7 @@ namespace Rssdp.Infrastructure } var handlers = this.DeviceUnavailable; - if (handlers != null) + if (handlers is not null) { handlers(this, new DeviceUnavailableEventArgs(device, expired)); } @@ -281,7 +289,7 @@ namespace Rssdp.Infrastructure var commsServer = _CommunicationsServer; _CommunicationsServer = null; - if (commsServer != null) + if (commsServer is not null) { commsServer.ResponseReceived -= this.CommsServer_ResponseReceived; commsServer.RequestReceived -= this.CommsServer_RequestReceived; @@ -289,13 +297,13 @@ namespace Rssdp.Infrastructure } } - private void AddOrUpdateDiscoveredDevice(DiscoveredSsdpDevice device, IPAddress IpAddress) + private void AddOrUpdateDiscoveredDevice(DiscoveredSsdpDevice device, IPAddress IPAddress) { bool isNewDevice = false; lock (_Devices) { var existingDevice = FindExistingDeviceNotification(_Devices, device.NotificationType, device.Usn); - if (existingDevice == null) + if (existingDevice is null) { _Devices.Add(device); isNewDevice = true; @@ -307,17 +315,17 @@ namespace Rssdp.Infrastructure } } - DeviceFound(device, isNewDevice, IpAddress); + DeviceFound(device, isNewDevice, IPAddress); } - private void DeviceFound(DiscoveredSsdpDevice device, bool isNewDevice, IPAddress IpAddress) + private void DeviceFound(DiscoveredSsdpDevice device, bool isNewDevice, IPAddress IPAddress) { if (!NotificationTypeMatchesFilter(device)) { return; } - OnDeviceAvailable(device, isNewDevice, IpAddress); + OnDeviceAvailable(device, isNewDevice, IPAddress); } private bool NotificationTypeMatchesFilter(DiscoveredSsdpDevice device) @@ -329,12 +337,12 @@ namespace Rssdp.Infrastructure private Task BroadcastDiscoverMessage(string serviceType, TimeSpan mxValue, CancellationToken cancellationToken) { + const string header = "M-SEARCH * HTTP/1.1"; + var values = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase); values["HOST"] = "239.255.255.250:1900"; - values["USER-AGENT"] = "UPnP/1.0 DLNADOC/1.50 Platinum/1.0.4.2"; - // values["X-EMBY-SERVERID"] = _appHost.SystemId; - + values["USER-AGENT"] = string.Format(CultureInfo.InvariantCulture, "{0}/{1} UPnP/1.0 RSSDP/{2}", _OSName, _OSVersion, SsdpConstants.ServerVersion); values["MAN"] = "\"ssdp:discover\""; // Search target @@ -343,14 +351,12 @@ namespace Rssdp.Infrastructure // Seconds to delay response values["MX"] = "3"; - var header = "M-SEARCH * HTTP/1.1"; - var message = BuildMessage(header, values); return _CommunicationsServer.SendMulticastMessage(message, null, cancellationToken); } - private void ProcessSearchResponseMessage(HttpResponseMessage message, IPAddress IpAddress) + private void ProcessSearchResponseMessage(HttpResponseMessage message, IPAddress IPAddress) { if (!message.IsSuccessStatusCode) { @@ -358,7 +364,7 @@ namespace Rssdp.Infrastructure } var location = GetFirstHeaderUriValue("Location", message); - if (location != null) + if (location is not null) { var device = new DiscoveredSsdpDevice() { @@ -370,11 +376,11 @@ namespace Rssdp.Infrastructure ResponseHeaders = message.Headers }; - AddOrUpdateDiscoveredDevice(device, IpAddress); + AddOrUpdateDiscoveredDevice(device, IPAddress); } } - private void ProcessNotificationMessage(HttpRequestMessage message, IPAddress IpAddress) + private void ProcessNotificationMessage(HttpRequestMessage message, IPAddress IPAddress) { if (String.Compare(message.Method.Method, "Notify", StringComparison.OrdinalIgnoreCase) != 0) { @@ -384,7 +390,7 @@ namespace Rssdp.Infrastructure var notificationType = GetFirstHeaderStringValue("NTS", message); if (String.Compare(notificationType, SsdpConstants.SsdpKeepAliveNotification, StringComparison.OrdinalIgnoreCase) == 0) { - ProcessAliveNotification(message, IpAddress); + ProcessAliveNotification(message, IPAddress); } else if (String.Compare(notificationType, SsdpConstants.SsdpByeByeNotification, StringComparison.OrdinalIgnoreCase) == 0) { @@ -392,10 +398,10 @@ namespace Rssdp.Infrastructure } } - private void ProcessAliveNotification(HttpRequestMessage message, IPAddress IpAddress) + private void ProcessAliveNotification(HttpRequestMessage message, IPAddress IPAddress) { var location = GetFirstHeaderUriValue("Location", message); - if (location != null) + if (location is not null) { var device = new DiscoveredSsdpDevice() { @@ -407,7 +413,7 @@ namespace Rssdp.Infrastructure ResponseHeaders = message.Headers }; - AddOrUpdateDiscoveredDevice(device, IpAddress); + AddOrUpdateDiscoveredDevice(device, IPAddress); } } @@ -445,7 +451,7 @@ namespace Rssdp.Infrastructure if (message.Headers.Contains(headerName)) { message.Headers.TryGetValues(headerName, out values); - if (values != null) + if (values is not null) { retVal = values.FirstOrDefault(); } @@ -461,7 +467,7 @@ namespace Rssdp.Infrastructure if (message.Headers.Contains(headerName)) { message.Headers.TryGetValues(headerName, out values); - if (values != null) + if (values is not null) { retVal = values.FirstOrDefault(); } @@ -477,7 +483,7 @@ namespace Rssdp.Infrastructure if (request.Headers.Contains(headerName)) { request.Headers.TryGetValues(headerName, out values); - if (values != null) + if (values is not null) { value = values.FirstOrDefault(); } @@ -494,7 +500,7 @@ namespace Rssdp.Infrastructure if (response.Headers.Contains(headerName)) { response.Headers.TryGetValues(headerName, out values); - if (values != null) + if (values is not null) { value = values.FirstOrDefault(); } @@ -506,7 +512,7 @@ namespace Rssdp.Infrastructure private TimeSpan CacheAgeFromHeader(System.Net.Http.Headers.CacheControlHeaderValue headerValue) { - if (headerValue == null) + if (headerValue is null) { return TimeSpan.Zero; } @@ -563,7 +569,7 @@ namespace Rssdp.Infrastructure } } - if (existingDevices != null && existingDevices.Count > 0) + if (existingDevices is not null && existingDevices.Count > 0) { foreach (var removedDevice in existingDevices) { @@ -619,7 +625,7 @@ namespace Rssdp.Infrastructure private void CommsServer_ResponseReceived(object sender, ResponseReceivedEventArgs e) { - ProcessSearchResponseMessage(e.Message, e.LocalIpAddress); + ProcessSearchResponseMessage(e.Message, e.LocalIPAddress); } private void CommsServer_RequestReceived(object sender, RequestReceivedEventArgs e) |