public AddFormatAttribute ( int formatID, string formatAttribute ) : void | ||
formatID | int | |
formatAttribute | string | |
return | void |
public static SDP ParseSDPDescription(string sdpDescription) { try { if (sdpDescription != null && sdpDescription.Trim().Length > 0) { SDP sdp = new SDP(); SDPMediaAnnouncement activeAnnouncement = null; string[] sdpLines = Regex.Split(sdpDescription, CRLF); foreach (string sdpLine in sdpLines) { if (sdpLine.Trim().StartsWith("v=")) { if (!Decimal.TryParse(sdpLine.Substring(2), out sdp.Version)) { logger.LogWarning("The Version value in an SDP description could not be parsed as a decimal: " + sdpLine + "."); } } else if (sdpLine.Trim().StartsWith("o=")) { string[] ownerFields = sdpLine.Substring(2).Split(' '); sdp.Username = ownerFields[0]; sdp.SessionId = ownerFields[1]; Int32.TryParse(ownerFields[2], out sdp.AnnouncementVersion); sdp.NetworkType = ownerFields[3]; sdp.AddressType = ownerFields[4]; sdp.Address = ownerFields[5]; } else if (sdpLine.Trim().StartsWith("s=")) { sdp.SessionName = sdpLine.Substring(2); } else if (sdpLine.Trim().StartsWith("c=")) { if (sdp.Connection == null) { sdp.Connection = SDPConnectionInformation.ParseConnectionInformation(sdpLine); } if (activeAnnouncement != null) { activeAnnouncement.Connection = SDPConnectionInformation.ParseConnectionInformation(sdpLine); } } else if (sdpLine.Trim().StartsWith("b=")) { if (activeAnnouncement != null) { activeAnnouncement.BandwidthAttributes.Add(sdpLine.Substring(2)); } else { sdp.BandwidthAttributes.Add(sdpLine.Substring(2)); } } else if (sdpLine.Trim().StartsWith("t=")) { sdp.Timing = sdpLine.Substring(2); } else if (sdpLine.Trim().StartsWith("m=")) { Match mediaMatch = Regex.Match(sdpLine.Substring(2).Trim(), @"(?<type>\w+)\s+(?<port>\d+)\s+(?<transport>\S+)(\s*)(?<formats>.*)$"); if (mediaMatch.Success) { SDPMediaAnnouncement announcement = new SDPMediaAnnouncement(); announcement.Media = SDPMediaTypes.GetSDPMediaType(mediaMatch.Result("${type}")); Int32.TryParse(mediaMatch.Result("${port}"), out announcement.Port); announcement.Transport = mediaMatch.Result("${transport}"); announcement.ParseMediaFormats(mediaMatch.Result("${formats}")); sdp.Media.Add(announcement); activeAnnouncement = announcement; } else { logger.LogWarning("A media line in SDP was invalid: " + sdpLine.Substring(2) + "."); } } else if (sdpLine.Trim().StartsWith("a=" + ICE_UFRAG_ATTRIBUTE_PREFIX)) { sdp.IceUfrag = sdpLine.Substring(sdpLine.IndexOf(':') + 1); } else if (sdpLine.Trim().StartsWith("a=" + ICE_PWD_ATTRIBUTE_PREFIX)) { sdp.IcePwd = sdpLine.Substring(sdpLine.IndexOf(':') + 1); } else if (sdpLine.Trim().StartsWith(SDPMediaAnnouncement.MEDIA_FORMAT_ATTRIBUE_PREFIX)) { if (activeAnnouncement != null) { Match formatAttributeMatch = Regex.Match(sdpLine.Trim(), SDPMediaAnnouncement.MEDIA_FORMAT_ATTRIBUE_PREFIX + @"(?<id>\d+)\s+(?<attribute>.*)$"); if (formatAttributeMatch.Success) { int formatID; if (Int32.TryParse(formatAttributeMatch.Result("${id}"), out formatID)) { activeAnnouncement.AddFormatAttribute(formatID, formatAttributeMatch.Result("${attribute}")); } else { logger.LogWarning("Invalid media format attribute in SDP: " + sdpLine); } } else { activeAnnouncement.AddExtra(sdpLine); } } else { logger.LogWarning("There was no active media announcement for a media format attribute, ignoring."); } } else if (sdpLine.Trim().StartsWith(SDPMediaAnnouncement.MEDIA_FORMAT_PARAMETERS_ATTRIBUE_PREFIX)) { if (activeAnnouncement != null) { Match formatAttributeMatch = Regex.Match(sdpLine.Trim(), SDPMediaAnnouncement.MEDIA_FORMAT_PARAMETERS_ATTRIBUE_PREFIX + @"(?<id>\d+)\s+(?<attribute>.*)$"); if (formatAttributeMatch.Success) { int formatID; if (Int32.TryParse(formatAttributeMatch.Result("${id}"), out formatID)) { activeAnnouncement.AddFormatParameterAttribute(formatID, formatAttributeMatch.Result("${attribute}")); } else { logger.LogWarning("Invalid media format parameter attribute in SDP: " + sdpLine); } } else { activeAnnouncement.AddExtra(sdpLine); } } else { logger.LogWarning("There was no active media announcement for a media format parameter attribute, ignoring."); } } else if (sdpLine.Trim().StartsWith("a=" + ICE_CANDIDATE_ATTRIBUTE_PREFIX)) { if (sdp.IceCandidates == null) { sdp.IceCandidates = new List <IceCandidate>(); } sdp.IceCandidates.Add(IceCandidate.Parse(sdpLine.Substring(sdpLine.IndexOf(':') + 1))); } else { if (activeAnnouncement != null) { activeAnnouncement.AddExtra(sdpLine); } else { sdp.AddExtra(sdpLine); } } } return(sdp); } else { return(null); } } catch (Exception excp) { logger.LogError("Exception ParseSDPDescription. " + excp.Message); throw excp; } }
public static SDP ParseSDPDescription(string sdpDescription) { try { if (sdpDescription != null && sdpDescription.Trim().Length > 0) { SDP sdp = new SDP(); sdp.m_rawSdp = sdpDescription; SDPMediaAnnouncement activeAnnouncement = null; string[] sdpLines = Regex.Split(sdpDescription, CRLF); foreach (string sdpLine in sdpLines) { string sdpLineTrimmed = sdpLine.Trim(); if (sdpLineTrimmed.StartsWith("v=")) { if (!Decimal.TryParse(sdpLineTrimmed.Substring(2), out sdp.Version)) { logger.LogWarning( "The Version value in an SDP description could not be parsed as a decimal: " + sdpLine + "."); } } else if (sdpLineTrimmed.StartsWith("o=")) { string[] ownerFields = sdpLineTrimmed.Substring(2).Split(' '); sdp.Username = ownerFields[0]; sdp.SessionId = ownerFields[1]; Int32.TryParse(ownerFields[2], out sdp.AnnouncementVersion); sdp.NetworkType = ownerFields[3]; sdp.AddressType = ownerFields[4]; sdp.AddressOrHost = ownerFields[5]; } else if (sdpLineTrimmed.StartsWith("s=")) { sdp.SessionName = sdpLineTrimmed.Substring(2); } else if (sdpLineTrimmed.StartsWith("c=")) { if (sdp.Connection == null) { sdp.Connection = SDPConnectionInformation.ParseConnectionInformation(sdpLineTrimmed); } if (activeAnnouncement != null) { activeAnnouncement.Connection = SDPConnectionInformation.ParseConnectionInformation(sdpLineTrimmed); } } else if (sdpLineTrimmed.StartsWith("b=")) { if (activeAnnouncement != null) { activeAnnouncement.BandwidthAttributes.Add(sdpLineTrimmed.Substring(2)); } else { sdp.BandwidthAttributes.Add(sdpLineTrimmed.Substring(2)); } } else if (sdpLineTrimmed.StartsWith("t=")) { sdp.Timing = sdpLineTrimmed.Substring(2); } else if (sdpLineTrimmed.StartsWith("m=")) { Match mediaMatch = Regex.Match(sdpLineTrimmed.Substring(2), @"(?<type>\w+)\s+(?<port>\d+)\s+(?<transport>\S+)(\s*)(?<formats>.*)$"); if (mediaMatch.Success) { SDPMediaAnnouncement announcement = new SDPMediaAnnouncement(); announcement.Media = SDPMediaTypes.GetSDPMediaType(mediaMatch.Result("${type}")); Int32.TryParse(mediaMatch.Result("${port}"), out announcement.Port); announcement.Transport = mediaMatch.Result("${transport}"); announcement.ParseMediaFormats(mediaMatch.Result("${formats}")); sdp.Media.Add(announcement); activeAnnouncement = announcement; } else { logger.LogWarning("A media line in SDP was invalid: " + sdpLineTrimmed.Substring(2) + "."); } } else if (sdpLineTrimmed.StartsWith("a=" + GROUP_ATRIBUTE_PREFIX)) { sdp.Group = sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1); } else if (sdpLineTrimmed.StartsWith("a=" + ICE_UFRAG_ATTRIBUTE_PREFIX)) { if (activeAnnouncement != null) { activeAnnouncement.IceUfrag = sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1); } else { sdp.IceUfrag = sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1); } } else if (sdpLineTrimmed.StartsWith("a=" + ICE_PWD_ATTRIBUTE_PREFIX)) { if (activeAnnouncement != null) { activeAnnouncement.IcePwd = sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1); } else { sdp.IcePwd = sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1); } } else if (sdpLineTrimmed.StartsWith("a=" + DTLS_FINGERPRINT_ATTRIBUTE_PREFIX)) { if (activeAnnouncement != null) { activeAnnouncement.DtlsFingerprint = sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1); } else { sdp.DtlsFingerprint = sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1); } } else if (sdpLineTrimmed.StartsWith($"a={END_ICE_CANDIDATES_ATTRIBUTE}")) { // Do nothing. } else if (sdpLineTrimmed.StartsWith(SDPMediaAnnouncement.MEDIA_FORMAT_ATTRIBUE_PREFIX)) { if (activeAnnouncement != null) { Match formatAttributeMatch = Regex.Match(sdpLineTrimmed, SDPMediaAnnouncement.MEDIA_FORMAT_ATTRIBUE_PREFIX + @"(?<id>\d+)\s+(?<attribute>.*)$"); if (formatAttributeMatch.Success) { int formatID; if (Int32.TryParse(formatAttributeMatch.Result("${id}"), out formatID)) { activeAnnouncement.AddFormatAttribute(formatID, formatAttributeMatch.Result("${attribute}")); } else { logger.LogWarning("Invalid media format attribute in SDP: " + sdpLine); } } else { activeAnnouncement.AddExtra(sdpLineTrimmed); } } else { logger.LogWarning( "There was no active media announcement for a media format attribute, ignoring."); } } else if (sdpLineTrimmed.StartsWith(SDPMediaAnnouncement.MEDIA_FORMAT_PARAMETERS_ATTRIBUE_PREFIX) ) { if (activeAnnouncement != null) { Match formatAttributeMatch = Regex.Match(sdpLineTrimmed, SDPMediaAnnouncement.MEDIA_FORMAT_PARAMETERS_ATTRIBUE_PREFIX + @"(?<id>\d+)\s+(?<attribute>.*)$"); if (formatAttributeMatch.Success) { int formatID; if (Int32.TryParse(formatAttributeMatch.Result("${id}"), out formatID)) { activeAnnouncement.AddFormatParameterAttribute(formatID, formatAttributeMatch.Result("${attribute}")); } else { logger.LogWarning("Invalid media format parameter attribute in SDP: " + sdpLine); } } else { activeAnnouncement.AddExtra(sdpLineTrimmed); } } else { logger.LogWarning( "There was no active media announcement for a media format parameter attribute, ignoring."); } } else if (sdpLineTrimmed.StartsWith("a=" + ICE_CANDIDATE_ATTRIBUTE_PREFIX)) { if (activeAnnouncement != null) { if (activeAnnouncement.IceCandidates == null) { activeAnnouncement.IceCandidates = new List <string>(); } activeAnnouncement.IceCandidates.Add( sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1)); } else { if (sdp.IceCandidates == null) { sdp.IceCandidates = new List <string>(); } sdp.IceCandidates.Add(sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1)); } } //2018-12-21 rj2: add a=crypto else if (sdpLineTrimmed.StartsWith(SDPSecurityDescription.CRYPTO_ATTRIBUE_PREFIX)) { if (activeAnnouncement != null) { try { activeAnnouncement.AddCryptoLine(sdpLineTrimmed); } catch (FormatException fex) { logger.LogWarning("Error Parsing SDP-Line(a=crypto) " + fex); } } } else if (MediaStreamStatusType.IsMediaStreamStatusAttribute(sdpLine.Trim(), out var mediaStreamStatus)) { if (activeAnnouncement != null) { activeAnnouncement.MediaStreamStatus = mediaStreamStatus; } else { sdp.SessionMediaStreamStatus = mediaStreamStatus; } } else if (sdpLineTrimmed.StartsWith("a=" + MEDIA_ID_ATTRIBUTE_PREFIX)) { if (activeAnnouncement != null) { activeAnnouncement.MediaID = sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1); } else { logger.LogWarning("A media ID can only be set on a media announcement."); } } else if (sdpLineTrimmed.StartsWith(SDPMediaAnnouncement.MEDIA_FORMAT_SSRC_GROUP_ATTRIBUE_PREFIX) ) { if (activeAnnouncement != null) { string[] fields = sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1).Split(' '); // Set the ID. if (fields.Length > 0) { activeAnnouncement.SsrcGroupID = fields[0]; } // Add attributes for each of the SSRC values. for (int i = 1; i < fields.Length; i++) { if (uint.TryParse(fields[i], out var ssrc)) { activeAnnouncement.SsrcAttributes.Add( new SDPSsrcAttribute(ssrc, null, activeAnnouncement.SsrcGroupID)); } } } else { logger.LogWarning("A ssrc-group ID can only be set on a media announcement."); } } else if (sdpLineTrimmed.StartsWith(SDPMediaAnnouncement.MEDIA_FORMAT_SSRC_ATTRIBUE_PREFIX)) { if (activeAnnouncement != null) { string[] ssrcFields = sdpLineTrimmed.Substring(sdpLineTrimmed.IndexOf(':') + 1) .Split(' '); if (ssrcFields.Length > 0 && uint.TryParse(ssrcFields[0], out var ssrc)) { var ssrcAttribute = activeAnnouncement.SsrcAttributes.FirstOrDefault(x => x.SSRC == ssrc); if (ssrcAttribute == null) { ssrcAttribute = new SDPSsrcAttribute(ssrc, null, null); activeAnnouncement.SsrcAttributes.Add(ssrcAttribute); } if (ssrcFields.Length > 1) { if (ssrcFields[1].StartsWith(SDPSsrcAttribute.MEDIA_CNAME_ATTRIBUE_PREFIX)) { ssrcAttribute.Cname = ssrcFields[1].Substring(ssrcFields[1].IndexOf(':') + 1); } } } } else { logger.LogWarning("A ssrc attribute can only be set on a media announcement."); } } else { if (activeAnnouncement != null) { activeAnnouncement.AddExtra(sdpLineTrimmed); } else { sdp.AddExtra(sdpLineTrimmed); } } } return(sdp); } else { return(null); } } catch (Exception excp) { logger.LogError("Exception ParseSDPDescription. " + excp.Message); throw excp; } }
public static SDP ParseSDPDescription(string sdpDescription) { try { if (sdpDescription != null && sdpDescription.Trim().Length > 0) { SDP sdp = new SDP(); SDPMediaAnnouncement media = new SDPMediaAnnouncement(); string[] sdpLines = Regex.Split(sdpDescription, CRLF); //added WebRTC handling -> dont parse SDP especially sdp.isWebRTC = sdpDescription.Contains("a=source:webrtc"); if (sdp.isWebRTC) { foreach (string sdpLine in sdpLines) { sdp.ExtraAttributes.Add(sdpLine); } } else { foreach (string sdpLine in sdpLines) { if (sdpLine.Trim().StartsWith("v=")) { if (!Decimal.TryParse(sdpLine.Substring(2), out sdp.Version)) { logger.Warn("The Version value in an SDP description could not be parsed as a decimal: " + sdpLine + "."); } } else if (sdpLine.Trim().StartsWith("o=")) { string[] ownerFields = sdpLine.Substring(2).Split(' '); sdp.Username = ownerFields[0]; sdp.SessionId = ownerFields[1]; Int32.TryParse(ownerFields[2], out sdp.AnnouncementVersion); sdp.NetworkType = ownerFields[3]; sdp.AddressType = ownerFields[4]; sdp.Address = ownerFields[5]; } else if (sdpLine.Trim().StartsWith("s=")) { sdp.SessionName = sdpLine.Substring(2); } else if (sdpLine.Trim().StartsWith("c=")) { sdp.Connection = SDPConnectionInformation.ParseConnectionInformation(sdpLine); } else if (sdpLine.Trim().StartsWith("t=")) { sdp.Timing = sdpLine.Substring(2); } else if (sdpLine.Trim().StartsWith("m=")) { Match mediaMatch = Regex.Match(sdpLine.Substring(2).Trim(), @"(?<type>\w+)\s+(?<port>\d+)\s+(?<transport>\S+)\s+(?<formats>.*)$"); if (mediaMatch.Success) { media.Media = SDPMediaTypes.GetSDPMediaType(mediaMatch.Result("${type}")); Int32.TryParse(mediaMatch.Result("${port}"), out media.Port); media.Transport = mediaMatch.Result("${transport}"); media.ParseMediaFormats(mediaMatch.Result("${formats}")); } else { logger.Warn("A media line in SDP was invalid: " + sdpLine.Substring(2) + "."); } } else if (sdpLine.Trim().StartsWith("a=" + ICE_UFRAG_ATTRIBUTE_PREFIX)) { sdp.IceUfrag = sdpLine.Substring(sdpLine.IndexOf(':') + 1); } else if (sdpLine.Trim().StartsWith("a=" + ICE_PWD_ATTRIBUTE_PREFIX)) { sdp.IcePwd = sdpLine.Substring(sdpLine.IndexOf(':') + 1); } else if (sdpLine.Trim().StartsWith(SDPMediaAnnouncement.MEDIA_FORMAT_ATTRIBUE_PREFIX)) { Match formatAttributeMatch = Regex.Match(sdpLine.Trim(), SDPMediaAnnouncement.MEDIA_FORMAT_ATTRIBUE_PREFIX + @"(?<id>\d+)\s+(?<attribute>.*)$"); if (formatAttributeMatch.Success) { int formatID; if (Int32.TryParse(formatAttributeMatch.Result("${id}"), out formatID)) { media.AddFormatAttribute(formatID, formatAttributeMatch.Result("${attribute}")); } else { logger.Warn("Invalid media format attribute in SDP: " + sdpLine); } } else { sdp.ExtraAttributes.Add(sdpLine); } } else { sdp.ExtraAttributes.Add(sdpLine); } } sdp.Media.Add(media); } return sdp; } else { return null; } } catch (Exception excp) { logger.Error("Exception ParseSDPDescription. " + excp.Message); throw excp; } }