diff options
Diffstat (limited to 'RSSDP/SsdpDeviceLocator.cs')
| -rw-r--r-- | RSSDP/SsdpDeviceLocator.cs | 136 |
1 files changed, 66 insertions, 70 deletions
diff --git a/RSSDP/SsdpDeviceLocator.cs b/RSSDP/SsdpDeviceLocator.cs index 7afd32581..d6fad4b9d 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> @@ -17,7 +17,11 @@ namespace Rssdp.Infrastructure private ISsdpCommunicationsServer _CommunicationsServer; private Timer _BroadcastTimer; - private object _timerLock = new object(); + private object _timerLock = new(); + + private string _OSName; + + private string _OSVersion; private readonly TimeSpan DefaultSearchWaitTime = TimeSpan.FromSeconds(4); private readonly TimeSpan OneSecond = TimeSpan.FromSeconds(1); @@ -25,13 +29,17 @@ namespace Rssdp.Infrastructure /// <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> @@ -211,21 +219,18 @@ 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) + if (IsDisposed) { return; } - var handlers = this.DeviceAvailable; - if (handlers != null) + var handlers = DeviceAvailable; + handlers?.Invoke(this, new DeviceAvailableEventArgs(device, isNewDevice) { - handlers(this, new DeviceAvailableEventArgs(device, isNewDevice) - { - RemoteIpAddress = IpAddress - }); - } + RemoteIPAddress = IPAddress + }); } /// <summary> @@ -236,16 +241,13 @@ namespace Rssdp.Infrastructure /// <seealso cref="DeviceUnavailable"/> protected virtual void OnDeviceUnavailable(DiscoveredSsdpDevice device, bool expired) { - if (this.IsDisposed) + if (IsDisposed) { return; } - var handlers = this.DeviceUnavailable; - if (handlers != null) - { - handlers(this, new DeviceUnavailableEventArgs(device, expired)); - } + var handlers = DeviceUnavailable; + handlers?.Invoke(this, new DeviceUnavailableEventArgs(device, expired)); } /// <summary> @@ -281,21 +283,21 @@ 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; + commsServer.ResponseReceived -= CommsServer_ResponseReceived; + commsServer.RequestReceived -= CommsServer_RequestReceived; } } } - 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 +309,17 @@ 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 +331,12 @@ namespace Rssdp.Infrastructure private Task BroadcastDiscoverMessage(string serviceType, TimeSpan mxValue, CancellationToken cancellationToken) { - var values = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase); + const string header = "M-SEARCH * HTTP/1.1"; - 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; + var values = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase); + values["HOST"] = string.Format(CultureInfo.InvariantCulture, "{0}:{1}", SsdpConstants.MulticastLocalAdminAddress, SsdpConstants.MulticastPort); + 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 +345,12 @@ 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 +358,7 @@ namespace Rssdp.Infrastructure } var location = GetFirstHeaderUriValue("Location", message); - if (location != null) + if (location is not null) { var device = new DiscoveredSsdpDevice() { @@ -370,32 +370,32 @@ 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) + if (string.Compare(message.Method.Method, "Notify", StringComparison.OrdinalIgnoreCase) != 0) { return; } var notificationType = GetFirstHeaderStringValue("NTS", message); - if (String.Compare(notificationType, SsdpConstants.SsdpKeepAliveNotification, StringComparison.OrdinalIgnoreCase) == 0) + 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) + else if (string.Compare(notificationType, SsdpConstants.SsdpByeByeNotification, StringComparison.OrdinalIgnoreCase) == 0) { ProcessByeByeNotification(message); } } - 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() { @@ -407,14 +407,14 @@ namespace Rssdp.Infrastructure ResponseHeaders = message.Headers }; - AddOrUpdateDiscoveredDevice(device, IpAddress); + AddOrUpdateDiscoveredDevice(device, IPAddress); } } private void ProcessByeByeNotification(HttpRequestMessage message) { var notficationType = GetFirstHeaderStringValue("NT", message); - if (!String.IsNullOrEmpty(notficationType)) + if (!string.IsNullOrEmpty(notficationType)) { var usn = GetFirstHeaderStringValue("USN", message); @@ -441,11 +441,10 @@ namespace Rssdp.Infrastructure private string GetFirstHeaderStringValue(string headerName, HttpResponseMessage message) { string retVal = null; - IEnumerable<string> values; if (message.Headers.Contains(headerName)) { - message.Headers.TryGetValues(headerName, out values); - if (values != null) + message.Headers.TryGetValues(headerName, out var values); + if (values is not null) { retVal = values.FirstOrDefault(); } @@ -457,11 +456,10 @@ namespace Rssdp.Infrastructure private string GetFirstHeaderStringValue(string headerName, HttpRequestMessage message) { string retVal = null; - IEnumerable<string> values; if (message.Headers.Contains(headerName)) { - message.Headers.TryGetValues(headerName, out values); - if (values != null) + message.Headers.TryGetValues(headerName, out var values); + if (values is not null) { retVal = values.FirstOrDefault(); } @@ -473,11 +471,10 @@ namespace Rssdp.Infrastructure private Uri GetFirstHeaderUriValue(string headerName, HttpRequestMessage request) { string value = null; - IEnumerable<string> values; if (request.Headers.Contains(headerName)) { - request.Headers.TryGetValues(headerName, out values); - if (values != null) + request.Headers.TryGetValues(headerName, out var values); + if (values is not null) { value = values.FirstOrDefault(); } @@ -490,11 +487,10 @@ namespace Rssdp.Infrastructure private Uri GetFirstHeaderUriValue(string headerName, HttpResponseMessage response) { string value = null; - IEnumerable<string> values; if (response.Headers.Contains(headerName)) { - response.Headers.TryGetValues(headerName, out values); - if (values != null) + response.Headers.TryGetValues(headerName, out var values); + if (values is not null) { value = values.FirstOrDefault(); } @@ -506,7 +502,7 @@ namespace Rssdp.Infrastructure private TimeSpan CacheAgeFromHeader(System.Net.Http.Headers.CacheControlHeaderValue headerValue) { - if (headerValue == null) + if (headerValue is null) { return TimeSpan.Zero; } @@ -523,7 +519,7 @@ namespace Rssdp.Infrastructure foreach (var device in expiredDevices) { - if (this.IsDisposed) + if (IsDisposed) { return; } @@ -537,7 +533,7 @@ namespace Rssdp.Infrastructure // problems. foreach (var expiredUsn in (from expiredDevice in expiredDevices select expiredDevice.Usn).Distinct()) { - if (this.IsDisposed) + if (IsDisposed) { return; } @@ -554,7 +550,7 @@ namespace Rssdp.Infrastructure existingDevices = FindExistingDeviceNotifications(_Devices, deviceUsn); foreach (var existingDevice in existingDevices) { - if (this.IsDisposed) + if (IsDisposed) { return true; } @@ -563,7 +559,7 @@ namespace Rssdp.Infrastructure } } - if (existingDevices != null && existingDevices.Count > 0) + if (existingDevices is not null && existingDevices.Count > 0) { foreach (var removedDevice in existingDevices) { @@ -619,7 +615,7 @@ 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) |