public Task BadRttPingResponse_RequestShouldFail(int mode)
{
return(Http2LoopbackServer.CreateClientAndServerAsync(async uri =>
{
using var handler = CreateHttpClientHandler();
using HttpClient client = CreateHttpClient(handler);
HttpRequestException exception = await Assert.ThrowsAsync <HttpRequestException>(() => client.GetAsync(uri));
_output.WriteLine(exception.Message + exception.StatusCode);
},
async server =>
{
Http2LoopbackConnection connection = await server.EstablishConnectionAsync();
(int streamId, _) = await connection.ReadAndParseRequestHeaderAsync();
await connection.SendDefaultResponseHeadersAsync(streamId);
PingFrame pingFrame = await connection.ReadPingAsync(); // expect an RTT PING
if (mode == 0)
{
// Invalid PING payload
await connection.SendPingAckAsync(-6666); // send an invalid PING response
}
else
{
// Unexpected PING response
await connection.SendPingAckAsync(pingFrame.Data); // send an valid PING response
await connection.SendPingAckAsync(pingFrame.Data - 1); // send a second unexpected PING response
}
await connection.SendResponseDataAsync(streamId, new byte[] { 1, 2, 3 }, true); // otherwise fine response
},
NoAutoPingResponseHttp2Options));
}
public void Read_Protected_ResultBytesAreExpected()
{
//Arrange
var messageBytes = Utils.ParseHexString(GetProtectedMessageHex());
var destConnectionId = PacketConnectionId.Empty;
var packetNumbers = GetPacketNumbersHex();
var currentPacketNumber = PacketNumber.Parse(Utils.ParseHexString(packetNumbers.Current));
var largestPacketNumber = PacketNumber.Parse(Utils.ParseHexString(packetNumbers.Largest));
var secrets = GetSecrets();
var aead = Cipher.TLS_CHACHA20_POLY1305_SHA256.CreateAead(Utils.ParseHexString(secrets.Iv), Utils.ParseHexString(secrets.Key));
var cipher = Cipher.TLS_CHACHA20_POLY1305_SHA256.CreateCipher(Utils.ParseHexString(secrets.Hp));
//Act
var cursor = new MemoryCursor(messageBytes);
var result = ShortPacket.TryParseProtectedByConnectionId(aead, cipher, cursor, destConnectionId, largestPacketNumber, out var packet);
using (packet.Payload.SetCursor(cursor))
{
result &= PingFrame.TryParse(cursor);
result &= cursor.IsEnd();
}
result &= cursor.IsEnd();
//Assert
Assert.True(result);
Assert.Equal(destConnectionId, packet.DestinationConnectionId);
Assert.Equal(currentPacketNumber, packet.Number);
}
private void HandlePingFrame(PingFrame pingFrame)
{
Http2Logger.LogDebug("PING frame: stream id={0}, payload={1}", pingFrame.StreamId,
pingFrame.Payload.Count);
/* 12 -> 6.7
* PING frames are not associated with any individual stream. If a PING
* frame is received with a stream identifier field value other than
* 0x0, the recipient MUST respond with a connection error of type PROTOCOL_ERROR. */
if (pingFrame.StreamId != 0)
{
throw new ProtocolError(ResetStatusCode.ProtocolError,
"Incoming ping frame with stream id != 0");
}
if (pingFrame.PayloadLength != PingFrame.DefPayloadLength)
{
throw new ProtocolError(ResetStatusCode.FrameSizeError, "Ping payload size is not equal to 8");
}
if (pingFrame.IsAck)
{
_pingReceived.Set();
}
else
{
var pingAckFrame = new PingFrame(true, pingFrame.Payload.ToArray());
_writeQueue.WriteFrame(pingAckFrame);
}
}
public async Task SendPingFrame(string receiverAddress, int timeOut)
{
PingFrame pingFrame = new PingFrame(GetNextFrameId(), _address, receiverAddress, timeOut);
try
{
await SubmitLoRaFrameAsync(pingFrame, timeOut).ConfigureAwait(false);
}
catch (AckNotReceivedTimeoutException)
{
//TimeOut are handle via Event
}
}
private void OnKeepAlive()
{
if (_keepAliveLocker.Wait(0))
{
try
{
if (!Active)
{
return;
}
if (!KeepAliveEnabled)
{
return;
}
if (_localActor.Type == _remoteActor.Type &&
_localActor.Name == _remoteActor.Name)
{
return;
}
if (_keepAliveTracker.ShouldSendKeepAlive())
{
var actorKeepAliveRequest = new PingFrame();
var actorKeepAliveRequestBuffer = _channelConfiguration.FrameBuilder.EncodeFrame(actorKeepAliveRequest);
_log.DebugFormat("KeepAlive send request from local actor [{0}] to remote actor [{1}].", _localActor, _remoteActor);
_innerSession.Send(actorKeepAliveRequestBuffer);
StartKeepAliveTimeoutTimer();
_keepAliveTracker.ResetTimer();
}
}
catch (Exception ex)
{
_log.Error(ex.Message, ex);
Close();
}
finally
{
_keepAliveLocker.Release();
}
}
}
/// <summary>
/// Pings session.
/// </summary>
/// <returns></returns>
public TimeSpan Ping()
{
var pingFrame = new PingFrame(false);
_writeQueue.WriteFrame(pingFrame);
var now = DateTime.UtcNow;
if (!_pingReceived.WaitOne(3000))
{
//Remote endpoint was not answer at time.
Dispose();
}
_pingReceived.Reset();
var newNow = DateTime.UtcNow;
Http2Logger.LogDebug("Ping: " + (newNow - now).Milliseconds);
return(newNow - now);
}
/// <summary>
/// Process a ping frame request.
/// </summary>
/// <param name="httpContext">The current http context.</param>
/// <param name="pingFrame">The ping frame.</param>
private static void ProcessPingFrameRequest(Nequeo.Net.Http2.HttpContext httpContext, PingFrame pingFrame)
{
/* PING frames are not associated with any individual stream. If a PING
* frame is received with a stream identifier field value other than
* 0x0, the recipient MUST respond with a connection error of type PROTOCOL_ERROR. */
if (pingFrame.StreamId != 0)
{
throw new ProtocolError(ErrorCodeRegistry.Protocol_Error, "Incoming ping frame with stream id not equal to 0.");
}
// If the payload length is incorrect.
if (pingFrame.PayloadLength != PingFrame.DefPayloadLength)
{
throw new ProtocolError(ErrorCodeRegistry.Frame_Size_Error, "Ping payload size is not equal to " + PingFrame.DefPayloadLength.ToString());
}
// Create the ping frame response.
var frame = new PingFrame(true, pingFrame.Payload.ToArray());
// Write the frame.
httpContext.ResponseWrite(frame.Buffer);
}
public void Write_Protected_ResultBytesAreExpected()
{
//Arrange
var expectedBytes = GetProtectedMessageHex();
var buffer = new byte[PacketBuffer.MaxPacketSize];
var destConnectionId = PacketConnectionId.Empty;
var packetNumbers = GetPacketNumbersHex();
var currentPacketNumber = PacketNumber.Parse(Utils.ParseHexString(packetNumbers.Current));
var largestPacketNumber = PacketNumber.Parse(Utils.ParseHexString(packetNumbers.Largest));
var secrets = GetSecrets();
var aead = Cipher.TLS_CHACHA20_POLY1305_SHA256.CreateAead(Utils.ParseHexString(secrets.Iv), Utils.ParseHexString(secrets.Key));
var cipher = Cipher.TLS_CHACHA20_POLY1305_SHA256.CreateCipher(Utils.ParseHexString(secrets.Hp));
//Act
var cursor = new MemoryCursor(buffer);
using (ShortPacket.StartProtectedWriting(aead, cipher, cursor, destConnectionId, currentPacketNumber, largestPacketNumber))
{
PingFrame.Write(cursor);
}
//Assert
Assert.Equal(expectedBytes, Utils.ToHexString(cursor.PeekStart().ToArray()), true);
}
private static void ProcessPingFrame(PingFrame pingFrame)
{
_timeoutTimer.Enabled = false;
_pingTimer.Enabled = true;
}
/// <summary>
/// Dispatches the incoming frame.
/// </summary>
/// <param name="frame">The frame.</param>
/// <exception cref="System.NotImplementedException"></exception>
private void DispatchIncomingFrame(Frame frame)
{
Http2Stream stream = null;
//Spec 03 tells that frame with continues flag MUST be followed by a frame with the same type
//and the same stread id.
if (_toBeContinuedHeaders != null)
{
if (_toBeContinuedFrame.FrameType != frame.FrameType ||
_toBeContinuedFrame.StreamId != frame.StreamId)
{
//If not, we must close the session.
Dispose();
return;
}
}
try
{
switch (frame.FrameType)
{
case FrameType.Headers:
Http2Logger.LogDebug("New headers with id = " + frame.StreamId);
var headersFrame = (HeadersFrame)frame;
var serializedHeaders = new byte[headersFrame.CompressedHeaders.Count];
Buffer.BlockCopy(headersFrame.CompressedHeaders.Array,
headersFrame.CompressedHeaders.Offset,
serializedHeaders, 0, serializedHeaders.Length);
var decompressedHeaders = _comprProc.Decompress(serializedHeaders);
var headers = new HeadersList(decompressedHeaders);
if (!headersFrame.IsEndHeaders)
{
_toBeContinuedHeaders = decompressedHeaders;
_toBeContinuedFrame = headersFrame;
break;
}
if (_toBeContinuedHeaders != null)
{
headers.AddRange(_toBeContinuedHeaders);
}
headersFrame.Headers.AddRange(headers);
foreach (var header in headers)
{
Http2Logger.LogDebug("Stream {0} header: {1}={2}", frame.StreamId, header.Key, header.Value);
}
stream = GetStream(headersFrame.StreamId);
if (stream == null)
{
// new stream
if (ActiveStreams.GetOpenedStreamsBy(_remoteEnd) + 1 > OurMaxConcurrentStreams)
{
//Remote side tries to open more streams than allowed
Dispose();
return;
}
string path = headers.GetValue(":path");
if (path == null)
{
path = _handshakeHeaders.ContainsKey(":path") ? _handshakeHeaders[":path"] : @"\index.html";
headers.Add(new KeyValuePair <string, string>(":path", path));
}
stream = new Http2Stream(headers, headersFrame.StreamId,
_writeQueue, _flowControlManager,
_comprProc);
ActiveStreams[stream.Id] = stream;
stream.OnClose += (o, args) =>
{
if (!ActiveStreams.Remove(ActiveStreams[args.Id]))
{
throw new ArgumentException("Cant remove stream from ActiveStreams");
}
};
_toBeContinuedFrame = null;
_toBeContinuedHeaders = null;
}
break;
case FrameType.Priority:
var priorityFrame = (PriorityFrame)frame;
Http2Logger.LogDebug("Priority frame. StreamId: {0} Priority: {1}", priorityFrame.StreamId, priorityFrame.Priority);
stream = GetStream(priorityFrame.StreamId);
if (_usePriorities)
{
stream.Priority = priorityFrame.Priority;
}
break;
case FrameType.RstStream:
var resetFrame = (RstStreamFrame)frame;
stream = GetStream(resetFrame.StreamId);
if (stream != null)
{
Http2Logger.LogDebug("RST frame with code " + resetFrame.StatusCode);
stream.Dispose();
}
break;
case FrameType.Data:
var dataFrame = (DataFrame)frame;
Http2Logger.LogDebug("Data frame. StreamId:{0} Length:{1}", dataFrame.StreamId, dataFrame.FrameLength);
stream = GetStream(dataFrame.StreamId);
//Aggressive window update
if (stream.IsFlowControlEnabled)
{
stream.WriteWindowUpdate(2000000);
}
break;
case FrameType.Ping:
var pingFrame = (PingFrame)frame;
Http2Logger.LogDebug("Ping frame with StreamId:{0} Payload:{1}", pingFrame.StreamId, pingFrame.Payload.Count);
if (pingFrame.FrameLength != PingFrame.PayloadLength)
{
throw new ProtocolError(ResetStatusCode.ProtocolError, "Ping payload size is not equal to 8");
}
if (pingFrame.IsPong)
{
_wasPingReceived = true;
_pingReceived.Set();
}
else
{
var pongFrame = new PingFrame(true, pingFrame.Payload.ToArray());
_writeQueue.WriteFrame(pongFrame);
}
break;
case FrameType.Settings:
//Not first frame in the session.
//Client initiates connection and sends settings before request.
//It means that if server sent settings before it will not be a first frame,
//because client initiates connection.
if (_ourEnd == ConnectionEnd.Server && !_wasSettingsReceived && ActiveStreams.Count != 0)
{
Dispose();
return;
}
var settingFrame = (SettingsFrame)frame;
Http2Logger.LogDebug("Settings frame. Entry count: {0} StreamId: {1}", settingFrame.EntryCount, settingFrame.StreamId);
_wasSettingsReceived = true;
_settingsManager.ProcessSettings(settingFrame, this, _flowControlManager);
break;
case FrameType.WindowUpdate:
if (_useFlowControl)
{
var windowFrame = (WindowUpdateFrame)frame;
Http2Logger.LogDebug("WindowUpdate frame. Delta: {0} StreamId: {1}", windowFrame.Delta, windowFrame.StreamId);
stream = GetStream(windowFrame.StreamId);
if (stream != null)
{
stream.UpdateWindowSize(windowFrame.Delta);
stream.PumpUnshippedFrames();
}
}
break;
case FrameType.GoAway:
_goAwayReceived = true;
Http2Logger.LogDebug("GoAway frame received");
Dispose();
break;
default:
throw new NotImplementedException(frame.FrameType.ToString());
}
if (stream != null && frame is IEndStreamFrame && ((IEndStreamFrame)frame).IsEndStream)
{
//Tell the stream that it was the last frame
Http2Logger.LogDebug("Final frame received for stream with id = " + stream.Id);
stream.EndStreamReceived = true;
}
if (stream != null && OnFrameReceived != null)
{
OnFrameReceived(this, new FrameReceivedEventArgs(stream, frame));
}
}
//Frame came for already closed stream. Ignore it.
//Spec:
//An endpoint that sends RST_STREAM MUST ignore
//frames that it receives on closed streams if it sends RST_STREAM.
//
//An endpoint MUST NOT send frames on a closed stream. An endpoint
//that receives a frame after receiving a RST_STREAM or a frame
//containing a END_STREAM flag on that stream MUST treat that as a
//stream error (Section 5.4.2) of type PROTOCOL_ERROR.
catch (Http2StreamNotFoundException)
{
if (stream != null)
{
stream.WriteRst(ResetStatusCode.ProtocolError);
}
else
{
//GoAway?
}
}
catch (CompressionError ex)
{
//The endpoint is unable to maintain the compression context for the connection.
Http2Logger.LogError("Compression error occured: " + ex.Message);
Close(ResetStatusCode.CompressionError);
}
catch (ProtocolError pEx)
{
Http2Logger.LogError("Protocol error occured: " + pEx.Message);
Close(pEx.Code);
}
}
public Frame GetFrame()
{
Frame result;
var frameType = _array.PeekByte();
switch (frameType)
{
case 0x00:
result = new PaddingFrame();
break;
case 0x01:
result = new PingFrame();
break;
case 0x02:
result = new AckFrame();
break;
case 0x03:
result = new AckFrame();
break;
case 0x04:
result = new ResetStreamFrame();
break;
case 0x05:
result = new StopSendingFrame();
break;
case 0x06:
result = new CryptoFrame();
break;
case 0x07:
result = new NewTokenFrame();
break;
case 0x08:
result = new StreamFrame();
break;
case 0x09:
result = new StreamFrame();
break;
case 0x0a:
result = new StreamFrame();
break;
case 0x0b:
result = new StreamFrame();
break;
case 0x0c:
result = new StreamFrame();
break;
case 0x0d:
result = new StreamFrame();
break;
case 0x0e:
result = new StreamFrame();
break;
case 0x0f:
result = new StreamFrame();
break;
case 0x10:
result = new MaxDataFrame();
break;
case 0x11:
result = new MaxStreamDataFrame();
break;
case 0x12:
result = new MaxStreamsFrame();
break;
case 0x13:
result = new MaxStreamsFrame();
break;
case 0x14:
result = new DataBlockedFrame();
break;
case 0x15:
result = new StreamDataBlockedFrame();
break;
case 0x16:
result = new StreamsBlockedFrame();
break;
case 0x17:
result = new StreamsBlockedFrame();
break;
case 0x18:
result = new NewConnectionIdFrame();
break;
case 0x19:
result = new RetireConnectionIdFrame();
break;
case 0x1a:
result = new PathChallengeFrame();
break;
case 0x1b:
result = new PathResponseFrame();
break;
case 0x1c:
result = new ConnectionCloseFrame();
break;
case 0x1d:
result = new ConnectionCloseFrame();
break;
default:
result = null;
break;
}
if (result != null)
{
result.Decode(_array);
}
return(result);
}
