public async Task ConnectionShouldGoAwayOnSettingsAckWithNonZeroLength(
int frameLength)
{
var inPipe = new BufferedPipe(1024);
var outPipe = new BufferedPipe(1024);
var http2Con = BuildConnection(true, Settings.Default, inPipe, outPipe);
await ClientPreface.WriteAsync(inPipe);
await inPipe.WriteSettings(Settings.Default);
// Wait for remote settings
await outPipe.ReadAndDiscardSettings();
// Wait for ack to our settings
await outPipe.AssertSettingsAck();
var fh = new FrameHeader
{
Type = FrameType.Settings,
Flags = (byte)SettingsFrameFlags.Ack,
StreamId = 0,
Length = frameLength,
};
await inPipe.WriteFrameHeader(fh);
// Wait for GoAway due to wrong stream ID
await outPipe.AssertGoAwayReception(ErrorCode.ProtocolError, 0);
await outPipe.AssertStreamEnd();
}
public async Task ConnectionShouldGoAwayOnInvalidSettingsFrameLength()
{
var inPipe = new BufferedPipe(1024);
var outPipe = new BufferedPipe(1024);
var http2Con = BuildConnection(true, Settings.Default, inPipe, outPipe);
await ClientPreface.WriteAsync(inPipe);
var settings = Settings.Default;
var settingsData = new byte[settings.RequiredSize + 1]; // 1 byte extra
var fh = new FrameHeader
{
Type = FrameType.Settings,
Length = settingsData.Length,
Flags = 0,
StreamId = 0,
};
settings.EncodeInto(new ArraySegment <byte>(
settingsData, 0, settingsData.Length - 1));
await inPipe.WriteFrameHeader(fh);
await inPipe.WriteAsync(new ArraySegment <byte>(settingsData));
await outPipe.ReadAndDiscardSettings();
await outPipe.AssertGoAwayReception(ErrorCode.ProtocolError, 0u);
await outPipe.AssertStreamEnd();
}
public async Task ConnectionShouldGoAwayOnUnsolicitedSettingsAck()
{
var inPipe = new BufferedPipe(1024);
var outPipe = new BufferedPipe(1024);
var http2Con = BuildConnection(true, Settings.Default, inPipe, outPipe);
await ClientPreface.WriteAsync(inPipe);
await inPipe.WriteSettings(Settings.Default);
// Wait for remote settings
await outPipe.ReadAndDiscardSettings();
// Wait for ack to our settings
await outPipe.AssertSettingsAck();
// Acknowledge remote settings 2 times
await inPipe.WriteSettingsAck();
await inPipe.WriteSettingsAck();
// Wait for GoAway due to multiple ACKs
await outPipe.AssertGoAwayReception(ErrorCode.ProtocolError, 0);
await outPipe.AssertStreamEnd();
}
public async Task ConnectionShouldGoAwayOnInvalidWindowSizeSettingWithFlowControlError()
{
var inPipe = new BufferedPipe(1024);
var outPipe = new BufferedPipe(1024);
var http2Con = BuildConnection(true, Settings.Default, inPipe, outPipe);
await ClientPreface.WriteAsync(inPipe);
var settings = Settings.Default;
settings.InitialWindowSize = (uint)int.MaxValue + 1u; // Invalid
var settingsData = new byte[settings.RequiredSize];
var fh = new FrameHeader
{
Type = FrameType.Settings,
Length = settingsData.Length,
Flags = 0,
StreamId = 0,
};
settings.EncodeInto(new ArraySegment <byte>(settingsData));
await inPipe.WriteFrameHeader(fh);
await inPipe.WriteAsync(new ArraySegment <byte>(settingsData));
await outPipe.ReadAndDiscardSettings();
await outPipe.AssertGoAwayReception(ErrorCode.FlowControlError, 0u);
await outPipe.AssertStreamEnd();
}
public async Task ShouldWriteThePrefaceToStream()
{
var buffer = new BufferWriteStream(50);
await ClientPreface.WriteAsync(buffer);
Assert.Equal(ClientPreface.Length, buffer.Written);
var pf = Encoding.ASCII.GetString(buffer.Buffer, 0, ClientPreface.Length);
Assert.Equal(ClientPreface.String, pf);
}
public async Task ConnectionShouldAcknowledgeValidSettings()
{
var inPipe = new BufferedPipe(1024);
var outPipe = new BufferedPipe(1024);
var http2Con = BuildConnection(true, Settings.Default, inPipe, outPipe);
await ClientPreface.WriteAsync(inPipe);
await inPipe.WriteSettings(Settings.Default);
await outPipe.ReadAndDiscardSettings();
await outPipe.AssertSettingsAck();
}
public async Task ConnectionShouldAcceptSettingsAckAndNotGoAway()
{
var inPipe = new BufferedPipe(1024);
var outPipe = new BufferedPipe(1024);
var http2Con = BuildConnection(true, Settings.Default, inPipe, outPipe);
await ClientPreface.WriteAsync(inPipe);
await inPipe.WriteSettings(Settings.Default);
// Wait for remote settings
await outPipe.ReadAndDiscardSettings();
// Wait for ack to our settings
await outPipe.AssertSettingsAck();
// Acknowledge remote settings
await inPipe.WriteSettingsAck();
// And expect that no GoAway follows - which means a timeout happens on read
await outPipe.AssertReadTimeout();
}
public async Task ConnectionShouldGoAwayOnInvalidSettingsMaxLengthExceeded()
{
var inPipe = new BufferedPipe(1024);
var outPipe = new BufferedPipe(1024);
var http2Con = BuildConnection(true, Settings.Default, inPipe, outPipe);
await ClientPreface.WriteAsync(inPipe);
var fh = new FrameHeader
{
Type = FrameType.Settings,
Length = (int)Settings.Default.MaxFrameSize + 1,
Flags = 0,
StreamId = 0,
};
await inPipe.WriteFrameHeader(fh);
await outPipe.ReadAndDiscardSettings();
await outPipe.AssertGoAwayReception(ErrorCode.FrameSizeError, 0u);
await outPipe.AssertStreamEnd();
}
public async Task ConnectionShouldGoAwayOnSettingsStreamIdNonZero()
{
var inPipe = new BufferedPipe(1024);
var outPipe = new BufferedPipe(1024);
var http2Con = BuildConnection(true, Settings.Default, inPipe, outPipe);
await ClientPreface.WriteAsync(inPipe);
var fh = new FrameHeader
{
Type = FrameType.Settings,
Length = Settings.Default.RequiredSize,
Flags = 0,
StreamId = 1,
};
await inPipe.WriteFrameHeader(fh);
await outPipe.ReadAndDiscardSettings();
await outPipe.AssertGoAwayReception(ErrorCode.ProtocolError, 0u);
await outPipe.AssertStreamEnd();
}
public async Task ServersShouldGoAwayIfFirstFrameIsNotSettings()
{
var inPipe = new BufferedPipe(1024);
var outPipe = new BufferedPipe(1024);
var http2Con = BuildConnection(true, Settings.Default, inPipe, outPipe);
await ClientPreface.WriteAsync(inPipe);
var fh = new FrameHeader
{
Type = FrameType.Headers,
Length = 0,
Flags = 0,
StreamId = 2,
};
await inPipe.WriteFrameHeader(fh);
await outPipe.ReadAndDiscardSettings();
await outPipe.AssertGoAwayReception(ErrorCode.ProtocolError, 0u);
await outPipe.AssertStreamEnd();
}
public static async Task PerformHandshakes(
this Connection connection,
IBufferedPipe inputStream,
IBufferedPipe outputStream,
Settings?remoteSettings = null)
{
if (connection.IsServer)
{
await ClientPreface.WriteAsync(inputStream);
}
var rsettings = remoteSettings ?? Settings.Default;
await inputStream.WriteSettings(rsettings);
if (!connection.IsServer)
{
await outputStream.ReadAndDiscardPreface();
}
await outputStream.ReadAndDiscardSettings();
await outputStream.AssertSettingsAck();
await inputStream.WriteSettingsAck();
}
public async Task ConnectionShouldIgnoreAndAcknowledgeUnknownSettings()
{
var inPipe = new BufferedPipe(1024);
var outPipe = new BufferedPipe(1024);
var http2Con = BuildConnection(true, Settings.Default, inPipe, outPipe);
await ClientPreface.WriteAsync(inPipe);
await outPipe.ReadAndDiscardSettings();
var settings = Settings.Default;
// Create a buffer for normal settings plus 3 unknown ones
var settingsBuffer = new byte[settings.RequiredSize + 18];
settings.EncodeInto(new ArraySegment <byte>(
settingsBuffer, 0, settings.RequiredSize));
// Use some unknown settings IDs
settingsBuffer[settings.RequiredSize] = 0;
settingsBuffer[settings.RequiredSize + 1] = 10;
settingsBuffer[settings.RequiredSize + 6] = 10;
settingsBuffer[settings.RequiredSize + 7] = 20;
settingsBuffer[settings.RequiredSize + 12] = 0xFF;
settingsBuffer[settings.RequiredSize + 13] = 0xFF;
var settingsHeader = new FrameHeader
{
Type = FrameType.Settings,
StreamId = 0,
Flags = 0,
Length = settingsBuffer.Length,
};
await inPipe.WriteFrameHeader(settingsHeader);
await inPipe.WriteAsync(new ArraySegment <byte>(settingsBuffer));
// Check if the connection ACKs these settings
await outPipe.AssertSettingsAck();
}
