private void cbNewRtp_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == 13)
{
Rtp rtp;
try
{
rtp = Rtp.FromString(cbNewRtp.Text, lbColor.BackColor);
if (!new System.IO.DirectoryInfo(rtp.Path).Exists)
{
return;
}
cbNewRtp.Text = "";
EditingRtps.Add(rtp);
RtpList.Items.Add(rtp);
RtpList.Color.ActualValue.Add(rtp.Color);
RtpList.SelectedIndex = RtpList.Items.Count - 1;
RtpList.Focus();
}
catch { return; }
}
else if (e.KeyChar == 26)
{
cbNewRtp.Text = "";
lbColor.BackColor = Color.Gray;
}
}
/// <summary>
/// Encodes, encrypts, and sends the provided PCM data to the connected voice channel.
/// </summary>
/// <param name="pcmData">PCM data to encode, encrypt, and send.</param>
/// <param name="blockSize">Millisecond length of the PCM data.</param>
/// <param name="bitRate">Bitrate of the PCM data.</param>
/// <returns>Task representing the sending operation.</returns>
public async Task SendAsync(byte[] pcmData, int blockSize, int bitRate = 16)
{
if (!IsInitialized)
{
throw new InvalidOperationException("The connection is not initialized");
}
await PlaybackSemaphore.WaitAsync().ConfigureAwait(false);
var rtp = Rtp.Encode(Sequence, Timestamp, SSRC);
var dat = Opus.Encode(pcmData, 0, pcmData.Length, bitRate);
dat = Sodium.Encode(dat, Rtp.MakeNonce(rtp), Key);
dat = Rtp.Encode(rtp, dat);
await SendSpeakingAsync(true).ConfigureAwait(false);
// works:
//await UdpClient.SendAsync(dat, dat.Length).ConfigureAwait(false);
await UdpClient.SendNativelyAsync(dat, dat.Length).ConfigureAwait(false);
Sequence++;
Timestamp += 48 * (uint)blockSize;
PlaybackSemaphore.Release();
}
private void RtpList_SelectedIndexChanged(object sender, EventArgs e)
{
int index = RtpList.SelectedIndex;
if (index >= RtpList.Items.Count || index < 0)
{
return;
}
Rtp rtp = (Rtp)RtpList.Items[index];
System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo(rtp.Path);
if (!dir.Exists)
{
return;
}
RtpInnerList.Clear();
RtpInnerList.Items.Clear();
RtpInnerList.AddChildDirectory(dir, rtp.Color, false);
RtpInnerList.AddChildFile(dir, rtp.Color);
ViewingRtp = rtp;
// ==== 移动处理 ====
btUp.Enabled = !(RtpList.SelectedIndex == 0);
btDown.Enabled = !(RtpList.SelectedIndex >= EditingRtps.Count - 1);
btDel.Enabled = !rtp.IsFromReg;
// ==== 赋予处理 ====
Strtb.Text = rtp.FullString();
cbNewRtp.Text = rtp.Path;
lbColor.BackColor = rtp.Color;
// ==================
}
/// <summary>
/// Encodes, encrypts, and sends the provided PCM data to the connected voice channel.
/// </summary>
/// <param name="pcmData">PCM data to encode, encrypt, and send.</param>
/// <param name="blockSize">Millisecond length of the PCM data.</param>
/// <param name="bitRate">Bitrate of the PCM data.</param>
/// <returns>Task representing the sending operation.</returns>
public async Task SendAsync(byte[] pcmData, int blockSize, int bitRate = 16)
{
if (!IsInitialized)
{
throw new InvalidOperationException("The connection is not initialized");
}
await PlaybackSemaphore.WaitAsync().ConfigureAwait(false);
var rtp = Rtp.Encode(Sequence, Timestamp, SSRC);
var dat = Opus.Encode(pcmData, 0, pcmData.Length, bitRate);
dat = Sodium.Encode(dat, Rtp.MakeNonce(rtp), Key);
dat = Rtp.Encode(rtp, dat);
if (SynchronizerTicks == 0)
{
SynchronizerTicks = Stopwatch.GetTimestamp();
SynchronizerResolution = (Stopwatch.Frequency * 0.02);
TickResolution = 10_000_000.0 / Stopwatch.Frequency;
Discord.DebugLogger.LogMessage(LogLevel.Debug, "VoiceNext", $"Timer accuracy: {Stopwatch.Frequency.ToString("#,##0", CultureInfo.InvariantCulture)}/{SynchronizerResolution.ToString(CultureInfo.InvariantCulture)} (high resolution? {Stopwatch.IsHighResolution})", DateTime.Now);
}
else
{
// Provided by Laura#0090 (214796473689178133); this is Python, but adaptable:
//
// delay = max(0, self.delay + ((start_time + self.delay * loops) + - time.time()))
//
// self.delay
// sample size
// start_time
// time since streaming started
// loops
// number of samples sent
// time.time()
// DateTime.Now
var cts = Math.Max(Stopwatch.GetTimestamp() - SynchronizerTicks, 0);
if (cts < SynchronizerResolution)
{
await Task.Delay(TimeSpan.FromTicks((long)((SynchronizerResolution - cts) * TickResolution))).ConfigureAwait(false);
}
SynchronizerTicks += SynchronizerResolution;
}
await SendSpeakingAsync(true).ConfigureAwait(false);
await UdpClient.SendAsync(dat, dat.Length).ConfigureAwait(false);
Sequence++;
Timestamp += 48 * (uint)blockSize;
PlaybackSemaphore.Release();
}
internal VoiceNextConnection(DiscordClient client, DiscordGuild guild, DiscordChannel channel, VoiceNextConfiguration config, VoiceServerUpdatePayload server, VoiceStateUpdatePayload state)
{
Discord = client;
Guild = guild;
Channel = channel;
TransmittingSSRCs = new ConcurrentDictionary <uint, AudioSender>();
_userSpeaking = new AsyncEvent <UserSpeakingEventArgs>(Discord.EventErrorHandler, "VNEXT_USER_SPEAKING");
_userJoined = new AsyncEvent <VoiceUserJoinEventArgs>(Discord.EventErrorHandler, "VNEXT_USER_JOINED");
_userLeft = new AsyncEvent <VoiceUserLeaveEventArgs>(Discord.EventErrorHandler, "VNEXT_USER_LEFT");
_voiceReceived = new AsyncEvent <VoiceReceiveEventArgs>(Discord.EventErrorHandler, "VNEXT_VOICE_RECEIVED");
_voiceSocketError = new AsyncEvent <SocketErrorEventArgs>(Discord.EventErrorHandler, "VNEXT_WS_ERROR");
TokenSource = new CancellationTokenSource();
Configuration = config;
Opus = new Opus(AudioFormat);
//this.Sodium = new Sodium();
Rtp = new Rtp();
ServerData = server;
StateData = state;
var eps = ServerData.Endpoint;
var epi = eps.LastIndexOf(':');
var eph = string.Empty;
var epp = 80;
if (epi != -1)
{
eph = eps.Substring(0, epi);
epp = int.Parse(eps.Substring(epi + 1));
}
else
{
eph = eps;
}
ConnectionEndpoint = new ConnectionEndpoint {
Hostname = eph, Port = epp
};
ReadyWait = new TaskCompletionSource <bool>();
IsInitialized = false;
IsDisposed = false;
PlayingWait = null;
PacketQueue = new ConcurrentQueue <VoicePacket>();
KeepaliveTimestamps = new ConcurrentDictionary <ulong, long>();
UdpClient = Discord.Configuration.UdpClientFactory();
VoiceWs = Discord.Configuration.WebSocketClientFactory(Discord.Configuration.Proxy);
VoiceWs.Disconnected += VoiceWS_SocketClosed;
VoiceWs.MessageRecieved += VoiceWS_SocketMessage;
VoiceWs.Connected += VoiceWS_SocketOpened;
VoiceWs.Errored += VoiceWs_SocketErrored;
}
protected void SearchFile(Rtp rtp, string path)
{
string full = System.IO.Path.Combine(rtp.Path, path);
System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo(full);
if (!dir.Exists)
{
return;
}
fileList.AddChildFile(dir, rtp.Color);
}
protected void Page_Load(object sender, EventArgs e)
{
if (Session["Login"] == null)
{
Response.Redirect("LogIn.aspx");
}
int Pid = int.Parse(Request["pid"]);
var ArrProd = Application["ArrP"] as List <Product>;
Rtp.DataSource = GlobalFunc.GetSomeProd(Pid);
Rtp.DataBind();
var Arruser = Application["ArrU"] as User[];
}
internal void PreparePacket(ReadOnlySpan <byte> pcm, ref Memory <byte> target)
{
var audioFormat = AudioFormat;
var packetArray = ArrayPool <byte> .Shared.Rent(Rtp.CalculatePacketSize(audioFormat.SampleCountToSampleSize(audioFormat.CalculateMaximumFrameSize()), SelectedEncryptionMode));
var packet = packetArray.AsSpan();
Rtp.EncodeHeader(Sequence, Timestamp, SSRC, packet);
var opus = packet.Slice(Rtp.HeaderSize, pcm.Length);
Opus.Encode(pcm, ref opus);
Sequence++;
Timestamp += (uint)audioFormat.CalculateFrameSize(audioFormat.CalculateSampleDuration(pcm.Length));
Span <byte> nonce = new byte[Sodium.NonceSize];
switch (SelectedEncryptionMode)
{
case EncryptionMode.XSalsa20_Poly1305:
Sodium.GenerateNonce(packet.Slice(0, Rtp.HeaderSize), nonce);
break;
case EncryptionMode.XSalsa20_Poly1305_Suffix:
Sodium.GenerateNonce(nonce);
break;
case EncryptionMode.XSalsa20_Poly1305_Lite:
Sodium.GenerateNonce(Nonce++, nonce);
break;
default:
ArrayPool <byte> .Shared.Return(packetArray);
throw new Exception("Unsupported encryption mode.");
}
Span <byte> encrypted = new byte[Sodium.CalculateTargetSize(opus)];
Sodium.Encrypt(opus, encrypted, nonce);
encrypted.CopyTo(packet.Slice(Rtp.HeaderSize));
packet = packet.Slice(0, Rtp.CalculatePacketSize(encrypted.Length, SelectedEncryptionMode));
Sodium.AppendNonce(nonce, packet, SelectedEncryptionMode);
target = target.Slice(0, packet.Length);
packet.CopyTo(target.Span);
ArrayPool <byte> .Shared.Return(packetArray);
}
/// <summary>
/// Disconnects and disposes this voice connection.
/// </summary>
public void Dispose()
{
if (IsDisposed)
{
return;
}
IsDisposed = true;
IsInitialized = false;
TokenSource.Cancel();
SenderTokenSource.Cancel();
if (Configuration.EnableIncoming)
{
ReceiverTokenSource.Cancel();
}
try
{
VoiceWs.DisconnectAsync(null).ConfigureAwait(false).GetAwaiter().GetResult();
UdpClient.Close();
}
catch (Exception)
{ }
Opus?.Dispose();
Opus = null;
Sodium?.Dispose();
Sodium = null;
Rtp?.Dispose();
Rtp = null;
if (VoiceDisconnected != null)
{
VoiceDisconnected(Guild);
}
}
private bool ProcessPacket(ReadOnlySpan <byte> data, ref Memory <byte> opus, ref Memory <byte> pcm, IList <ReadOnlyMemory <byte> > pcmPackets, out AudioSender voiceSender, out AudioFormat outputFormat)
{
voiceSender = null;
outputFormat = default;
if (!Rtp.IsRtpHeader(data))
{
return(false);
}
Rtp.DecodeHeader(data, out var sequence, out var timestamp, out var ssrc, out var hasExtension);
var vtx = TransmittingSSRCs[ssrc];
voiceSender = vtx;
if (sequence <= vtx.LastSequence) // out-of-order packet; discard
{
return(false);
}
var gap = vtx.LastSequence != 0 ? sequence - 1 - vtx.LastSequence : 0;
if (gap >= 5)
{
Discord.DebugLogger.LogMessage(LogLevel.Warning, "VNext RX", "5 or more voice packets were dropped when receiving", DateTime.Now);
}
Span <byte> nonce = new byte[Sodium.NonceSize];
Sodium.GetNonce(data, nonce, SelectedEncryptionMode);
Rtp.GetDataFromPacket(data, out var encryptedOpus, SelectedEncryptionMode);
var opusSize = Sodium.CalculateSourceSize(encryptedOpus);
opus = opus.Slice(0, opusSize);
var opusSpan = opus.Span;
try
{
Sodium.Decrypt(encryptedOpus, opusSpan, nonce);
// Strip extensions, if any
if (hasExtension)
{
// RFC 5285, 4.2 One-Byte header
// http://www.rfcreader.com/#rfc5285_line186
if (opusSpan[0] == 0xBE && opusSpan[1] == 0xDE)
{
var headerLen = opusSpan[2] << 8 | opusSpan[3];
var i = 4;
for (; i < headerLen + 4; i++)
{
var @byte = opusSpan[i];
// ID is currently unused since we skip it anyway
//var id = (byte)(@byte >> 4);
var length = (byte)(@byte & 0x0F) + 1;
i += length;
}
// Strip extension padding too
while (opusSpan[i] == 0)
{
i++;
}
opusSpan = opusSpan.Slice(i);
}
// TODO: consider implementing RFC 5285, 4.3. Two-Byte Header
}
if (gap == 1)
{
var lastSampleCount = Opus.GetLastPacketSampleCount(vtx.Decoder);
var fecpcm = new byte[AudioFormat.SampleCountToSampleSize(lastSampleCount)];
var fecpcmMem = fecpcm.AsSpan();
Opus.Decode(vtx.Decoder, opusSpan, ref fecpcmMem, true, out _);
pcmPackets.Add(fecpcm.AsMemory(0, fecpcmMem.Length));
}
else if (gap > 1)
{
var lastSampleCount = Opus.GetLastPacketSampleCount(vtx.Decoder);
for (var i = 0; i < gap; i++)
{
var fecpcm = new byte[AudioFormat.SampleCountToSampleSize(lastSampleCount)];
var fecpcmMem = fecpcm.AsSpan();
Opus.ProcessPacketLoss(vtx.Decoder, lastSampleCount, ref fecpcmMem);
pcmPackets.Add(fecpcm.AsMemory(0, fecpcmMem.Length));
}
}
var pcmSpan = pcm.Span;
Opus.Decode(vtx.Decoder, opusSpan, ref pcmSpan, false, out outputFormat);
pcm = pcm.Slice(0, pcmSpan.Length);
}
finally
{
vtx.LastSequence = sequence;
}
return(true);
}
public virtual void Depacketize(Rtp.RtpFrame rtpFrame)
{
DisposeBuffer();
this.Buffer = new MemoryStream();
//Get all packets in the frame
foreach (Rtp.RtpPacket packet in rtpFrame)
ProcessPacket(packet);
//Order by DON?
this.Buffer.Position = 0;
}
private async Task VoiceReceiverTask()
{
var token = ReceiverToken;
var client = UdpClient;
while (!token.IsCancellationRequested)
{
if (client.DataAvailable <= 0)
{
continue;
}
byte[] data = null, header = null;
ushort seq = 0;
uint ts = 0, ssrc = 0;
try
{
data = await client.ReceiveAsync().ConfigureAwait(false);
header = new byte[RtpCodec.SIZE_HEADER];
data = Rtp.Decode(data, header);
var nonce = Rtp.MakeNonce(header);
data = Sodium.Decode(data, nonce, Key);
// following is thanks to code from Eris
// https://github.com/abalabahaha/eris/blob/master/lib/voice/VoiceConnection.js#L623
var doff = 0;
Rtp.Decode(header, out seq, out ts, out ssrc, out var has_ext);
if (has_ext)
{
if (data[0] == 0xBE && data[1] == 0xDE)
{
// RFC 5285, 4.2 One-Byte header
// http://www.rfcreader.com/#rfc5285_line186
var hlen = data[2] << 8 | data[3];
var i = 4;
for (; i < hlen + 4; i++)
{
var b = data[i];
// This is unused(?)
//var id = (b >> 4) & 0x0F;
var len = (b & 0x0F) + 1;
i += len;
}
while (data[i] == 0)
{
i++;
}
doff = i;
}
// TODO: consider implementing RFC 5285, 4.3. Two-Byte Header
}
data = Opus.Decode(data, doff, data.Length - doff);
}
catch { continue; }
// TODO: wait for ssrc map?
DiscordUser user = null;
if (SSRCMap.ContainsKey(ssrc))
{
var id = SSRCMap[ssrc];
if (Guild != null)
{
user = Guild._members.FirstOrDefault(xm => xm.Id == id) ?? await Guild.GetMemberAsync(id).ConfigureAwait(false);
}
if (user == null)
{
user = Discord.InternalGetCachedUser(id);
}
if (user == null)
{
user = new DiscordUser {
Discord = Discord, Id = id
}
}
;
}
await _voiceReceived.InvokeAsync(new VoiceReceiveEventArgs(Discord)
{
SSRC = ssrc,
Voice = new ReadOnlyCollection <byte>(data),
VoiceLength = 20,
User = user
}).ConfigureAwait(false);
}
}
/// <summary>
/// Depacketizes a single packet.
/// </summary>
/// <param name="packet"></param>
/// <param name="containsSps"></param>
/// <param name="containsPps"></param>
/// <param name="containsSei"></param>
/// <param name="containsSlice"></param>
/// <param name="isIdr"></param>
protected internal virtual void ProcessPacket(Rtp.RtpPacket packet)
{
//Starting at offset 0
int offset = 0;
//Obtain the data of the packet (without source list or padding)
byte[] packetData = packet.PayloadData.ToArray();
//Cache the length
int count = packetData.Length;
//Must have at least 2 bytes
if (count <= 2) return;
//Determine if the forbidden bit is set and the type of nal from the first byte
byte firstByte = packetData[offset];
//bool forbiddenZeroBit = ((firstByte & 0x80) >> 7) != 0;
byte nalUnitType = (byte)(firstByte & Common.Binary.FiveBitMaxValue);
//TODO
//o The F bit MUST be cleared if all F bits of the aggregated NAL units are zero; otherwise, it MUST be set.
//if (forbiddenZeroBit && nalUnitType <= 23 && nalUnitType > 29) throw new InvalidOperationException("Forbidden Zero Bit is Set.");
//Optomize setting out parameters, could be done with a label or with a static function.
//Determine what to do
switch (nalUnitType)
{
//Reserved - Ignore
case Media.Codecs.Video.H264.NalUnitType.Unknown:
case Media.Codecs.Video.H264.NalUnitType.PayloadContentScalabilityInformation:
case Media.Codecs.Video.H264.NalUnitType.Reserved:
{
//May have 4 byte NAL header.
//Do not handle
return;
}
case Media.Codecs.Video.H264.NalUnitType.SingleTimeAggregationA: //STAP - A
case Media.Codecs.Video.H264.NalUnitType.SingleTimeAggregationB: //STAP - B
case Media.Codecs.Video.H264.NalUnitType.MultiTimeAggregation16: //MTAP - 16
case Media.Codecs.Video.H264.NalUnitType.MultiTimeAggregation24: //MTAP - 24
{
//Move to Nal Data
++offset;
//Todo Determine if need to Order by DON first.
//EAT DON for ALL BUT STAP - A
if (nalUnitType != Media.Codecs.Video.H264.NalUnitType.SingleTimeAggregationA) offset += 2;
//Consume the rest of the data from the packet
while (offset < count)
{
//Determine the nal unit size which does not include the nal header
int tmp_nal_size = Common.Binary.Read16(packetData, offset, BitConverter.IsLittleEndian);
offset += 2;
//If the nal had data then write it
if (tmp_nal_size > 0)
{
//Store the nalType contained
m_ContainedNalTypes.Add(nalUnitType);
//For DOND and TSOFFSET
switch (nalUnitType)
{
case Media.Codecs.Video.H264.NalUnitType.MultiTimeAggregation16:// MTAP - 16
{
//SKIP DOND and TSOFFSET
offset += 3;
goto default;
}
case Media.Codecs.Video.H264.NalUnitType.MultiTimeAggregation24:// MTAP - 24
{
//SKIP DOND and TSOFFSET
offset += 4;
goto default;
}
default:
{
//Read the nal header but don't move the offset
byte nalHeader = (byte)(packetData[offset] & Common.Binary.FiveBitMaxValue);
//Store the nalType contained
m_ContainedNalTypes.Add(nalHeader);
if (nalHeader == 6 || nalHeader == 7 || nalHeader == 8) Buffer.WriteByte(0);
//Done reading
break;
}
}
//Write the start code
Buffer.Write(Media.Codecs.Video.H264.NalUnitType.StartCode, 0, 3);
//Write the nal header and data
Buffer.Write(packetData, offset, tmp_nal_size);
//Move the offset past the nal
offset += tmp_nal_size;
}
}
return;
}
case Media.Codecs.Video.H264.NalUnitType.FragmentationUnitA: //FU - A
case Media.Codecs.Video.H264.NalUnitType.FragmentationUnitB: //FU - B
{
/*
Informative note: When an FU-A occurs in interleaved mode, it
always follows an FU-B, which sets its DON.
* Informative note: If a transmitter wants to encapsulate a single
NAL unit per packet and transmit packets out of their decoding
order, STAP-B packet type can be used.
*/
//Need 2 bytes
if (count > 2)
{
//Read the Header
byte FUHeader = packetData[++offset];
bool Start = ((FUHeader & 0x80) >> 7) > 0;
//bool End = ((FUHeader & 0x40) >> 6) > 0;
//bool Receiver = (FUHeader & 0x20) != 0;
//if (Receiver) throw new InvalidOperationException("Receiver Bit Set");
//Move to data
++offset;
//Todo Determine if need to Order by DON first.
//DON Present in FU - B
if (nalUnitType == 29) offset += 2;
//Determine the fragment size
int fragment_size = count - offset;
//If the size was valid
if (fragment_size > 0)
{
//If the start bit was set
if (Start)
{
//Reconstruct the nal header
//Use the first 3 bits of the first byte and last 5 bites of the FU Header
byte nalHeader = (byte)((firstByte & 0xE0) | (FUHeader & Common.Binary.FiveBitMaxValue));
//Store the nalType contained
m_ContainedNalTypes.Add(nalHeader);
if (nalHeader == 6 || nalHeader == 7 || nalHeader == 8) Buffer.WriteByte(0);
//Write the start code
Buffer.Write(Media.Codecs.Video.H264.NalUnitType.StartCode, 0, 3);
//Write the re-construced header
Buffer.WriteByte(nalHeader);
}
//Allow If End to Write End Sequence?
//Write the data of the fragment.
Buffer.Write(packetData, offset, fragment_size);
}
}
return;
}
default:
{
//Store the nalType contained
m_ContainedNalTypes.Add(nalUnitType);
if (nalUnitType == 6 || nalUnitType == 7 || nalUnitType == 8) Buffer.WriteByte(0);
//Write the start code
Buffer.Write(Media.Codecs.Video.H264.NalUnitType.StartCode, 0, 3);
//Write the nal heaer and data data
Buffer.Write(packetData, offset, count - offset);
return;
}
}
}
public RFC5404Frame(Rtp.RtpFrame existing)
: base(existing)
{
}
public RFC5993Frame(Rtp.RtpFrame existing)
: base(existing)
{
}
public RFC6184Frame(Rtp.RtpFrame existing)
: base(existing)
{
}
public RFC4867Frame(Rtp.RtpFrame existing)
: base(existing)
{
}
public RFC5577Frame(Rtp.RtpFrame existing)
: base(existing)
{
}
public RFC2190Frame(Rtp.RtpFrame existing)
: base(existing)
{
}
public RFC4629Frame(Rtp.RtpFrame existing)
: base(existing)
{
}
/// <summary>
/// Prepares a text description which is compatible with 'rtpsend' among other 'rtp tools'.
/// </summary>
/// <param name="format">The <see cref="FileFormat"/> to output.</param>
/// <param name="packet">The <see cref="Rtp.RtpPacket"/> to describe</param>
/// <param name="time">Timeoffset from when recoding began, should be 0 for the first packet.</param>
/// <param name="source">The <see cref="System.Net.IPEndPoint"/> from which the packet was received.</param>
/// <returns>The text which describes the packet if the <paramref name="format"/> is a text format, otherwise an empty string</returns>
public static string ToTextualConvention(FileFormat format, Rtp.RtpPacket packet, TimeSpan time, System.Net.IPEndPoint source)
{
//StringBuilder?
//If the format is Short (Vat or Rtp Data in tablular form)
if (format == FileFormat.Short)
{
//Then return that format
return string.Format(RtpSend.ShortFormat,
//0
time.TotalSeconds.ToString("0.000000"),
//1
(packet.Marker ? (-packet.SequenceNumber) : packet.SequenceNumber).ToString(),
//2
source.Port.ToString());
}
StringBuilder builder = new StringBuilder(64);
//All Rtp are described with this format
builder.Append(string.Format(RtpSend.Format,
//0
time.TotalSeconds.ToString("0.000000"),
//1
string.Format(RtpSend.RtpPacketFormat,
//0
packet.Length, //Packet size in bytes including header
//1
source.Address.ToString() + ':' + source.Port.ToString(),
//2
packet.Version.ToString(),
//3
packet.Padding ? "1" : "0",
//4
packet.Extension ? "1" : "0",
//5
packet.ContributingSourceCount.ToString(),
//6
packet.Marker ? "1" : "0",
//7
packet.PayloadType,
//8 (Format description)
string.Format(RtpSend.PayloadDescriptionFormat, packet.PayloadType, RtpSendExtensions.PayloadDescription(packet)),
//9
packet.SequenceNumber,
//10
packet.SynchronizationSourceIdentifier,
//11
packet.Timestamp )));
//Write the textual representation of the items in the sourceList
if (packet.ContributingSourceCount > 0)
{
//Note
//http://www.cs.columbia.edu/irt/software/rtptools/ChangeLog.html
//States the format is not hex when in the format csrc[n]
//However -
//http://www.cs.columbia.edu/irt/software/rtptools/#rtpsend
//States that the format is :
//cc=<CSRC count>
//csrc=<CSRC>
//This is basically the same thing and a parsing semantic.
using (Media.RFC3550.SourceList sl = new Media.RFC3550.SourceList(packet))
{
if (sl == null)
{
builder.Append("#Incomplete Source List Not Included");
builder.Append((char)Common.ASCII.LineFeed);
}
else
{
//csrc=
while (sl.MoveNext())
{
builder.Append(string.Format(RtpSend.HexFormat, "csrc", HexSpecifier, sl.CurrentSource.ToString("X"), (char)Common.ASCII.LineFeed));
}
}
}
}
//Write the textual representation of the Extension
if (packet.Extension)
{
using (var rtpExtension = packet.GetExtension())
{
if (rtpExtension == null)
{
builder.Append("#Incomplete Extension Not Included");
builder.Append((char)Common.ASCII.LineFeed);
}
else
{
builder.Append(string.Format(RtpSend.HexFormat, "ext_type", HexSpecifier + rtpExtension.Flags.ToString("X"), (char)Common.ASCII.LineFeed));
builder.Append(string.Format(RtpSend.NonQuotedFormat, "ext_len", rtpExtension.LengthInWords));
builder.Append((char)Common.ASCII.LineFeed);
builder.Append(string.Format(RtpSend.HexFormat, "ext_data", BitConverter.ToString(rtpExtension.Data.ToArray()).Replace("-", string.Empty), (char)Common.ASCII.LineFeed));
}
}
}
//If the format is hex then add the payload dump
if (format == FileFormat.Hex)
{
var data = packet.PayloadData;
if (data.Any()) builder.Append(string.Format(RtpSend.HexFormat, "data", BitConverter.ToString(data.ToArray()).Replace("-", string.Empty), (char)Common.ASCII.LineFeed));
else builder.Append(string.Format(HexFormat, "data", NullSpecifier, (char)Common.ASCII.LineFeed));
}
//Return the result
return builder.ToString();
}
protected void Page_Load(object sender, EventArgs e)
{
if (Request["pid"] == null)
{
Response.Redirect("Default.aspx");
}
int Pid = int.Parse(Request["pid"]);
int tot = 0;
var ArrProd = Application["ArrP"] as List <Product>;
Rtp.DataSource = ArrProd;
Rtp.DataBind();
var Arruser = Application["ArrU"] as User[];
if (Session["Login"] == null)
{
Response.Redirect("LogIn.aspx");
}
string WhatToDo = (string)Request["op"];
if (WhatToDo == "remove")
{
var Cart = Session["Cart"] as Cart;
if (Cart != null)
{
Cart.RemoveFromCart(Pid);
Session["cart"] = Cart;
Response.Redirect("Mycart.aspx");
}
}
else if (WhatToDo == "empty")
{
var Cart = Session["Cart"] as Cart;
if (Cart != null)
{
Cart.EmptyCart();
Session["Cart"] = Cart;
Response.Redirect("Mycart.aspx");
}
}
else if (WhatToDo == "ed")
{
var Cart = Session["Cart"] as Cart;
if (Cart != null)
{
for (int i = 0; i < ArrProd.Count; i++)
{
Item ed = new Item(Pid, ArrProd[i].Pname, 1, ArrProd[i].Price, ArrProd[i].Picname);
Cart.removone(ed);
Session["Cart"] = Cart;
Response.Redirect("Mycart.aspx");
}
}
}
else if (WhatToDo == "add")
{
var Cart = Session["Cart"] as Cart;
if (Cart != null)
{
for (int i = 0; i < ArrProd.Count; i++)
{
Item ad = new Item(Pid, ArrProd[i].Pname, 1, ArrProd[i].Price, ArrProd[i].Picname);
Cart.adding(ad);
Session["Cart"] = Cart;
Response.Redirect("Mycart.aspx");
}
}
}
for (int i = 0; i < ArrProd.Count; i++)
{
if (ArrProd[i].Pid == Pid)
{
tot++;
var Cart = Session["Cart"] as Cart;
if (Cart == null)
{
Cart = new Cart();
}
Item tmp = new Item(Pid, ArrProd[i].Pname, 1, ArrProd[i].Price, ArrProd[i].Picname);
Cart.AddtoCart(tmp);
Session["Cart"] = Cart;
Response.Redirect("MyCart.aspx");
}
}
}