diff options
Diffstat (limited to 'RSSDP/SsdpDevicePublisher.cs')
| -rw-r--r-- | RSSDP/SsdpDevicePublisher.cs | 160 |
1 files changed, 120 insertions, 40 deletions
diff --git a/RSSDP/SsdpDevicePublisher.cs b/RSSDP/SsdpDevicePublisher.cs index 53b740052..1a8577d8d 100644 --- a/RSSDP/SsdpDevicePublisher.cs +++ b/RSSDP/SsdpDevicePublisher.cs @@ -40,12 +40,35 @@ namespace Rssdp.Infrastructure public SsdpDevicePublisher(ISsdpCommunicationsServer communicationsServer, INetworkManager networkManager, string osName, string osVersion, bool sendOnlyMatchedHost) { - if (communicationsServer == null) throw new ArgumentNullException(nameof(communicationsServer)); - if (networkManager == null) throw new ArgumentNullException(nameof(networkManager)); - if (osName == null) throw new ArgumentNullException(nameof(osName)); - if (osName.Length == 0) throw new ArgumentException("osName cannot be an empty string.", nameof(osName)); - if (osVersion == null) throw new ArgumentNullException(nameof(osVersion)); - if (osVersion.Length == 0) throw new ArgumentException("osVersion cannot be an empty string.", nameof(osName)); + if (communicationsServer == null) + { + throw new ArgumentNullException(nameof(communicationsServer)); + } + + if (networkManager == null) + { + throw new ArgumentNullException(nameof(networkManager)); + } + + if (osName == null) + { + throw new ArgumentNullException(nameof(osName)); + } + + if (osName.Length == 0) + { + throw new ArgumentException("osName cannot be an empty string.", nameof(osName)); + } + + if (osVersion == null) + { + throw new ArgumentNullException(nameof(osVersion)); + } + + if (osVersion.Length == 0) + { + throw new ArgumentException("osVersion cannot be an empty string.", nameof(osName)); + } _SupportPnpRootDevice = true; _Devices = new List<SsdpRootDevice>(); @@ -82,7 +105,10 @@ namespace Rssdp.Infrastructure [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1804:RemoveUnusedLocals", MessageId = "t", Justification = "Capture task to local variable supresses compiler warning, but task is not really needed.")] public void AddDevice(SsdpRootDevice device) { - if (device == null) throw new ArgumentNullException(nameof(device)); + if (device == null) + { + throw new ArgumentNullException(nameof(device)); + } ThrowIfDisposed(); @@ -115,7 +141,10 @@ namespace Rssdp.Infrastructure /// <exception cref="ArgumentNullException">Thrown if the <paramref name="device"/> argument is null.</exception> public async Task RemoveDevice(SsdpRootDevice device) { - if (device == null) throw new ArgumentNullException(nameof(device)); + if (device == null) + { + throw new ArgumentNullException(nameof(device)); + } bool wasRemoved = false; lock (_Devices) @@ -156,6 +185,7 @@ namespace Rssdp.Infrastructure public bool SupportPnpRootDevice { get { return _SupportPnpRootDevice; } + set { _SupportPnpRootDevice = value; @@ -185,7 +215,9 @@ namespace Rssdp.Infrastructure if (commsServer != null) { if (!commsServer.IsShared) + { commsServer.Dispose(); + } } _RecentSearchRequests = null; @@ -205,53 +237,66 @@ namespace Rssdp.Infrastructure return; } - //WriteTrace(String.Format("Search Request Received From {0}, Target = {1}", remoteEndPoint.ToString(), searchTarget)); + // WriteTrace(String.Format("Search Request Received From {0}, Target = {1}", remoteEndPoint.ToString(), searchTarget)); if (IsDuplicateSearchRequest(searchTarget, remoteEndPoint)) { - //WriteTrace("Search Request is Duplicate, ignoring."); + // WriteTrace("Search Request is Duplicate, ignoring."); return; } - //Wait on random interval up to MX, as per SSDP spec. - //Also, as per UPnP 1.1/SSDP spec ignore missing/bank MX header. If over 120, assume random value between 0 and 120. - //Using 16 as minimum as that's often the minimum system clock frequency anyway. + // Wait on random interval up to MX, as per SSDP spec. + // Also, as per UPnP 1.1/SSDP spec ignore missing/bank MX header. If over 120, assume random value between 0 and 120. + // Using 16 as minimum as that's often the minimum system clock frequency anyway. int maxWaitInterval = 0; if (String.IsNullOrEmpty(mx)) { - //Windows Explorer is poorly behaved and doesn't supply an MX header value. - //if (this.SupportPnpRootDevice) + // Windows Explorer is poorly behaved and doesn't supply an MX header value. + // if (this.SupportPnpRootDevice) mx = "1"; - //else - //return; + // else + // return; } - if (!Int32.TryParse(mx, out maxWaitInterval) || maxWaitInterval <= 0) return; + if (!Int32.TryParse(mx, out maxWaitInterval) || maxWaitInterval <= 0) + { + return; + } if (maxWaitInterval > 120) + { maxWaitInterval = _Random.Next(0, 120); + } - //Do not block synchronously as that may tie up a threadpool thread for several seconds. + // Do not block synchronously as that may tie up a threadpool thread for several seconds. Task.Delay(_Random.Next(16, (maxWaitInterval * 1000))).ContinueWith((parentTask) => { - //Copying devices to local array here to avoid threading issues/enumerator exceptions. + // Copying devices to local array here to avoid threading issues/enumerator exceptions. IEnumerable<SsdpDevice> devices = null; lock (_Devices) { if (String.Compare(SsdpConstants.SsdpDiscoverAllSTHeader, searchTarget, StringComparison.OrdinalIgnoreCase) == 0) + { devices = GetAllDevicesAsFlatEnumerable().ToArray(); + } else if (String.Compare(SsdpConstants.UpnpDeviceTypeRootDevice, searchTarget, StringComparison.OrdinalIgnoreCase) == 0 || (this.SupportPnpRootDevice && String.Compare(SsdpConstants.PnpDeviceTypeRootDevice, searchTarget, StringComparison.OrdinalIgnoreCase) == 0)) + { devices = _Devices.ToArray(); + } else if (searchTarget.Trim().StartsWith("uuid:", StringComparison.OrdinalIgnoreCase)) + { devices = (from device in GetAllDevicesAsFlatEnumerable() where String.Compare(device.Uuid, searchTarget.Substring(5), StringComparison.OrdinalIgnoreCase) == 0 select device).ToArray(); + } else if (searchTarget.StartsWith("urn:", StringComparison.OrdinalIgnoreCase)) + { devices = (from device in GetAllDevicesAsFlatEnumerable() where String.Compare(device.FullDeviceType, searchTarget, StringComparison.OrdinalIgnoreCase) == 0 select device).ToArray(); + } } if (devices != null) { var deviceList = devices.ToList(); - //WriteTrace(String.Format("Sending {0} search responses", deviceList.Count)); + // WriteTrace(String.Format("Sending {0} search responses", deviceList.Count)); foreach (var device in deviceList) { @@ -264,7 +309,7 @@ namespace Rssdp.Infrastructure } else { - //WriteTrace(String.Format("Sending 0 search responses.")); + // WriteTrace(String.Format("Sending 0 search responses.")); } }); } @@ -285,7 +330,9 @@ namespace Rssdp.Infrastructure { SendSearchResponse(SsdpConstants.UpnpDeviceTypeRootDevice, device, GetUsn(device.Udn, SsdpConstants.UpnpDeviceTypeRootDevice), endPoint, receivedOnlocalIpAddress, cancellationToken); if (this.SupportPnpRootDevice) + { SendSearchResponse(SsdpConstants.PnpDeviceTypeRootDevice, device, GetUsn(device.Udn, SsdpConstants.PnpDeviceTypeRootDevice), endPoint, receivedOnlocalIpAddress, cancellationToken); + } } SendSearchResponse(device.Udn, device, device.Udn, endPoint, receivedOnlocalIpAddress, cancellationToken); @@ -308,7 +355,7 @@ namespace Rssdp.Infrastructure { var rootDevice = device.ToRootDevice(); - //var additionalheaders = FormatCustomHeadersForResponse(device); + // var additionalheaders = FormatCustomHeadersForResponse(device); const string header = "HTTP/1.1 200 OK"; @@ -335,10 +382,9 @@ namespace Rssdp.Infrastructure } catch (Exception) { - } - //WriteTrace(String.Format("Sent search response to " + endPoint.ToString()), device); + // WriteTrace(String.Format("Sent search response to " + endPoint.ToString()), device); } private bool IsDuplicateSearchRequest(string searchTarget, IPEndPoint endPoint) @@ -352,15 +398,21 @@ namespace Rssdp.Infrastructure { var lastRequest = _RecentSearchRequests[newRequest.Key]; if (lastRequest.IsOld()) + { _RecentSearchRequests[newRequest.Key] = newRequest; + } else + { isDuplicateRequest = true; + } } else { _RecentSearchRequests.Add(newRequest.Key, newRequest); if (_RecentSearchRequests.Count > 10) + { CleanUpRecentSearchRequestsAsync(); + } } } @@ -382,9 +434,12 @@ namespace Rssdp.Infrastructure { try { - if (IsDisposed) return; + if (IsDisposed) + { + return; + } - //WriteTrace("Begin Sending Alive Notifications For All Devices"); + // WriteTrace("Begin Sending Alive Notifications For All Devices"); SsdpRootDevice[] devices; lock (_Devices) @@ -394,12 +449,15 @@ namespace Rssdp.Infrastructure foreach (var device in devices) { - if (IsDisposed) return; + if (IsDisposed) + { + return; + } SendAliveNotifications(device, true, CancellationToken.None); } - //WriteTrace("Completed Sending Alive Notifications For All Devices"); + // WriteTrace("Completed Sending Alive Notifications For All Devices"); } catch (ObjectDisposedException ex) { @@ -414,7 +472,9 @@ namespace Rssdp.Infrastructure { SendAliveNotification(device, SsdpConstants.UpnpDeviceTypeRootDevice, GetUsn(device.Udn, SsdpConstants.UpnpDeviceTypeRootDevice), cancellationToken); if (this.SupportPnpRootDevice) + { SendAliveNotification(device, SsdpConstants.PnpDeviceTypeRootDevice, GetUsn(device.Udn, SsdpConstants.PnpDeviceTypeRootDevice), cancellationToken); + } } SendAliveNotification(device, device.Udn, device.Udn, cancellationToken); @@ -448,7 +508,7 @@ namespace Rssdp.Infrastructure _CommsServer.SendMulticastMessage(message, _sendOnlyMatchedHost ? rootDevice.Address : null, cancellationToken); - //WriteTrace(String.Format("Sent alive notification"), device); + // WriteTrace(String.Format("Sent alive notification"), device); } private Task SendByeByeNotifications(SsdpDevice device, bool isRoot, CancellationToken cancellationToken) @@ -458,7 +518,9 @@ namespace Rssdp.Infrastructure { tasks.Add(SendByeByeNotification(device, SsdpConstants.UpnpDeviceTypeRootDevice, GetUsn(device.Udn, SsdpConstants.UpnpDeviceTypeRootDevice), cancellationToken)); if (this.SupportPnpRootDevice) + { tasks.Add(SendByeByeNotification(device, "pnp:rootdevice", GetUsn(device.Udn, "pnp:rootdevice"), cancellationToken)); + } } tasks.Add(SendByeByeNotification(device, device.Udn, device.Udn, cancellationToken)); @@ -499,20 +561,27 @@ namespace Rssdp.Infrastructure var timer = _RebroadcastAliveNotificationsTimer; _RebroadcastAliveNotificationsTimer = null; if (timer != null) + { timer.Dispose(); + } } private TimeSpan GetMinimumNonZeroCacheLifetime() { - var nonzeroCacheLifetimesQuery = (from device - in _Devices - where device.CacheLifetime != TimeSpan.Zero - select device.CacheLifetime).ToList(); + var nonzeroCacheLifetimesQuery = ( + from device + in _Devices + where device.CacheLifetime != TimeSpan.Zero + select device.CacheLifetime).ToList(); if (nonzeroCacheLifetimesQuery.Any()) + { return nonzeroCacheLifetimesQuery.Min(); + } else + { return TimeSpan.Zero; + } } private string GetFirstHeaderValue(System.Net.Http.Headers.HttpRequestHeaders httpRequestHeaders, string headerName) @@ -520,7 +589,9 @@ namespace Rssdp.Infrastructure string retVal = null; IEnumerable<String> values = null; if (httpRequestHeaders.TryGetValues(headerName, out values) && values != null) + { retVal = values.FirstOrDefault(); + } return retVal; } @@ -533,31 +604,38 @@ namespace Rssdp.Infrastructure { LogFunction(text); } - //System.Diagnostics.Debug.WriteLine(text, "SSDP Publisher"); + // System.Diagnostics.Debug.WriteLine(text, "SSDP Publisher"); } private void WriteTrace(string text, SsdpDevice device) { var rootDevice = device as SsdpRootDevice; if (rootDevice != null) + { WriteTrace(text + " " + device.DeviceType + " - " + device.Uuid + " - " + rootDevice.Location); + } else + { WriteTrace(text + " " + device.DeviceType + " - " + device.Uuid); + } } private void CommsServer_RequestReceived(object sender, RequestReceivedEventArgs e) { - if (this.IsDisposed) return; + if (this.IsDisposed) + { + return; + } if (string.Equals(e.Message.Method.Method, SsdpConstants.MSearchMethod, StringComparison.OrdinalIgnoreCase)) { - //According to SSDP/UPnP spec, ignore message if missing these headers. + // According to SSDP/UPnP spec, ignore message if missing these headers. // Edit: But some devices do it anyway - //if (!e.Message.Headers.Contains("MX")) + // if (!e.Message.Headers.Contains("MX")) // WriteTrace("Ignoring search request - missing MX header."); - //else if (!e.Message.Headers.Contains("MAN")) + // else if (!e.Message.Headers.Contains("MAN")) // WriteTrace("Ignoring search request - missing MAN header."); - //else + // else ProcessSearchRequest(GetFirstHeaderValue(e.Message.Headers, "MX"), GetFirstHeaderValue(e.Message.Headers, "ST"), e.ReceivedFrom, e.LocalIpAddress, CancellationToken.None); } } @@ -565,7 +643,9 @@ namespace Rssdp.Infrastructure private class SearchRequest { public IPEndPoint EndPoint { get; set; } + public DateTime Received { get; set; } + public string SearchTarget { get; set; } public string Key |