/// <summary>
/// Writes the settings frame.
/// </summary>
/// <param name="settings">The settings.</param>
public void WriteSettings(SettingsPair[] settings, bool isAck)
{
if (settings == null)
throw new ArgumentNullException("settings array is null");
var frame = new SettingsFrame(new List<SettingsPair>(settings), isAck);
_writeQueue.WriteFrame(frame);
if (!isAck && !_settingsAckReceived.WaitOne(60000))
{
WriteGoAway(ResetStatusCode.SettingsTimeout);
Dispose();
}
_settingsAckReceived.Reset();
if (OnSettingsSent != null)
{
OnSettingsSent(this, new SettingsSentEventArgs(frame));
}
}
protected virtual void ProcessSettings(SettingsFrame frame)
{
_isPushEnabled = _session.IsPushEnabled;
}
private void HandleSettingsFrame(SettingsFrame settingsFrame)
{
_wasSettingsReceived = true;
Http2Logger.LogDebug("Settings frame. Entry count: {0} StreamId: {1}", settingsFrame.EntryCount,
settingsFrame.StreamId);
for (int i = 0; i < settingsFrame.EntryCount; i++)
{
switch (settingsFrame[i].Id)
{
case SettingsIds.MaxConcurrentStreams:
RemoteMaxConcurrentStreams = settingsFrame[i].Value;
break;
case SettingsIds.InitialWindowSize:
int newInitWindowSize = settingsFrame[i].Value;
int windowSizeDiff = newInitWindowSize - _flowControlManager.StreamsInitialWindowSize;
foreach (var stream in ActiveStreams.FlowControlledStreams.Values)
{
stream.WindowSize += windowSizeDiff;
}
_flowControlManager.StreamsInitialWindowSize = newInitWindowSize;
InitialWindowSize = newInitWindowSize;
break;
case SettingsIds.FlowControlOptions:
_flowControlManager.Options = settingsFrame[i].Value;
break;
}
}
}
public SettingsSentEventArgs(SettingsFrame frame)
{
SettingsFrame = frame;
}
/// <summary>
/// Writes the settings frame.
/// </summary>
/// <param name="settings">The settings.</param>
public void WriteSettings(SettingsPair[] settings)
{
if (settings == null)
throw new ArgumentNullException("settings array is null");
var frame = new SettingsFrame(new List<SettingsPair>(settings));
_writeQueue.WriteFrame(frame);
if (OnSettingsSent != null)
{
OnSettingsSent(this, new SettingsSentEventArgs(frame));
}
}
private void HandleSettingsFrame(SettingsFrame settingsFrame)
{
_wasSettingsReceived = true;
Http2Logger.LogDebug("Settings frame. Entry count: {0} StreamId: {1}", settingsFrame.EntryCount,
settingsFrame.StreamId);
//Receipt of a SETTINGS frame with the ACK flag set and a length
//field value other than 0 MUST be treated as a connection error
//(Section 5.4.1) of type FRAME_SIZE_ERROR.
if (settingsFrame.IsAck)
{
_settingsAckReceived.Set();
if (settingsFrame.FrameLength != 0)
throw new ProtocolError(ResetStatusCode.FrameSizeError, "ack settings frame is not 0");
return;
}
for (int i = 0; i < settingsFrame.EntryCount; i++)
{
switch (settingsFrame[i].Id)
{
case SettingsIds.SettingsHeadersTableSize:
if (_comprProc is CompressionProcessor)
(_comprProc as CompressionProcessor).NotifySettingsChanges(settingsFrame[i].Value);
break;
case SettingsIds.SettingsEnableServerPush:
IsPushEnabled = settingsFrame[i].Value != 0;
break;
case SettingsIds.MaxConcurrentStreams:
RemoteMaxConcurrentStreams = settingsFrame[i].Value;
break;
case SettingsIds.InitialWindowSize:
int newInitWindowSize = settingsFrame[i].Value;
int windowSizeDiff = newInitWindowSize - _flowControlManager.StreamsInitialWindowSize;
foreach (var stream in ActiveStreams.FlowControlledStreams.Values)
{
stream.WindowSize += windowSizeDiff;
}
_flowControlManager.StreamsInitialWindowSize = newInitWindowSize;
InitialWindowSize = newInitWindowSize;
break;
case SettingsIds.FlowControlOptions:
_flowControlManager.Options = settingsFrame[i].Value;
break;
}
}
}
/// <summary>
/// Writes the SETTINGS frame.
/// </summary>
/// <param name="settings">The settings pairs.</param>
/// <param name="isAck">The ACK flag.</param>
public void WriteSettings(SettingsPair[] settings, bool isAck)
{
if (settings == null)
throw new ArgumentNullException("settings");
var frame = new SettingsFrame(new List<SettingsPair>(settings), isAck);
Http2Logger.LogDebug("Sending SETTINGS frame: stream id={0}, payload len={1}, is ack={2}, count={3}",
frame.StreamId, frame.PayloadLength, frame.IsAck, frame.EntryCount);
foreach(var s in settings)
{
Http2Logger.LogDebug("{0}: {1}", s.Id.ToString(), s.Value);
}
_writeQueue.WriteFrame(frame);
if (!isAck && !_settingsAckReceived.WaitOne(60000))
{
WriteGoAway(ResetStatusCode.SettingsTimeout);
Dispose();
}
_settingsAckReceived.Reset();
if (OnSettingsSent != null)
{
OnSettingsSent(this, new SettingsSentEventArgs(frame));
}
}
private void HandleSettingsFrame(SettingsFrame settingsFrame)
{
Http2Logger.LogDebug("SETTINGS frame: stream id={0}, payload len={1}, is ack={2}, count={3}",
settingsFrame.StreamId, settingsFrame.PayloadLength, settingsFrame.IsAck, settingsFrame.EntryCount);
_wasSettingsReceived = true;
/* 12 -> 6.5
If an endpoint receives a SETTINGS frame whose stream identifier
field is other than 0x0, the endpoint MUST respond with a connection
error of type PROTOCOL_ERROR. */
if (settingsFrame.StreamId != 0)
throw new ProtocolError(ResetStatusCode.ProtocolError, "Settings frame stream id is not 0");
/* 12 -> 6.5
Receipt of a SETTINGS frame with the ACK flag set and a length
field value other than 0 MUST be treated as a connection error
of type FRAME_SIZE_ERROR. */
if (settingsFrame.IsAck)
{
_settingsAckReceived.Set();
if (settingsFrame.PayloadLength != 0)
throw new ProtocolError(ResetStatusCode.FrameSizeError,
"Settings frame with ACK flag set and non-zero payload");
return;
}
for (int i = 0; i < settingsFrame.EntryCount; i++)
{
var setting = settingsFrame[i];
Http2Logger.LogDebug("{0}: {1}", setting.Id.ToString(), setting.Value);
switch (setting.Id)
{
case SettingsIds.HeadersTableSize:
if (_comprProc is CompressionProcessor)
(_comprProc as CompressionProcessor).NotifySettingsChanges(setting.Value);
break;
case SettingsIds.EnablePush:
IsPushEnabled = setting.Value != 0;
break;
case SettingsIds.MaxConcurrentStreams:
RemoteMaxConcurrentStreams = setting.Value;
/* 12 -> 8.2.2
Advertising a SETTINGS_MAX_CONCURRENT_STREAMS value of zero disables
server push by preventing the server from creating the necessary streams. */
IsPushEnabled = setting.Value == 0;
break;
case SettingsIds.InitialWindowSize:
int newInitWindowSize = setting.Value;
int windowSizeDiff = newInitWindowSize - _flowControlManager.StreamsInitialWindowSize;
foreach (var stream in StreamDictionary.FlowControlledStreams.Values)
{
stream.WindowSize += windowSizeDiff;
}
_flowControlManager.StreamsInitialWindowSize = newInitWindowSize;
InitialWindowSize = newInitWindowSize;
break;
// TODO:
// _GzipCompressionProcessor.Enabled = true;
// ignore CompressData setting for now
case SettingsIds.CompressData:
break;
/* 12 -> 5.2.1
Flow control cannot be disabled. */
/*case SettingsIds.FlowControlOptions:
_flowControlManager.Options = settingsFrame[i].Value;
break;*/
default:
/* 12 -> 6.5.2
An endpoint that receives a SETTINGS frame with any other identifier
MUST treat this as a connection error of type PROTOCOL_ERROR. */
throw new ProtocolError(ResetStatusCode.ProtocolError, "Unknown setting identifier");
}
}
}
