protected override async Task<HttpResponseMessage> SendAsync (HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
{
if (connection == null) {
connection = new Http2Connection (request.RequestUri.Host, (uint)request.RequestUri.Port, request.RequestUri.Scheme == Uri.UriSchemeHttps);
} else {
// TODO: Check if they tried to use a new host/port
}
await connection.Connect ();
var resetComplete = new ManualResetEventSlim (false);
var stream = await connection.CreateStream ();
stream.OnFrameReceived += frame => {
if (frame.IsEndStream)
resetComplete.Set ();
};
var headersFrame = new HeadersFrame (stream.StreamIdentifer);
headersFrame.Headers.Add (":method", request.Method.Method.ToUpperInvariant ());
headersFrame.Headers.Add (":path", request.RequestUri.PathAndQuery);
headersFrame.Headers.Add (":scheme", request.RequestUri.Scheme);
headersFrame.Headers.Add (":authority", request.RequestUri.Authority);
headersFrame.EndHeaders = true;
headersFrame.EndStream = true;
await connection.SendFrame (headersFrame);
resetComplete.Wait (connection.ConnectionTimeout);
var responseData = new List<byte> ();
var responseHeaders = new NameValueCollection ();
foreach (var f in stream.Frames) {
if (f.Type == FrameType.Headers) {
responseHeaders = (f as HeadersFrame)?.Headers ?? new NameValueCollection ();
} else if (f.Type == FrameType.Data) {
responseData.AddRange ((f as DataFrame).Data);
//responseData += Encoding.ASCII.GetString ((f as DataFrame).Data);
} else if (f.Type == FrameType.Continuation) {
// TODO:
}
}
var httpStatusStr = responseHeaders.GetValues (":status")?.FirstOrDefault ();
var httpStatus = HttpStatusCode.InternalServerError;
Enum.TryParse<HttpStatusCode> (httpStatusStr, out httpStatus);
var httpResponseMsg = new HttpResponseMessage (httpStatus);
foreach (var h in responseHeaders.AllKeys) {
if (!h.StartsWith (":"))
httpResponseMsg.Headers.TryAddWithoutValidation (h, responseHeaders [h]);
}
httpResponseMsg.Content = new ByteArrayContent (responseData.ToArray ());
return httpResponseMsg;
}
async void read()
{
int rx = 0;
byte[] b = new byte[4096];
while (true)
{
try {
rx = await clientStream.ReadAsync(b, 0, b.Length);
} catch {
rx = -1;
}
if (rx > 0)
{
Console.WriteLine("RX: {0} bytes", rx);
for (int i = 0; i < rx; i++)
{
buffer.Add(b [i]);
}
while (true)
{
// We need at least 9 bytes to process the frame
// 9 octets is the frame header length
if (buffer.Count < 9)
{
break;
}
// Find out the frame length
// which is a 24 bit uint, so we need to convert this as c# uint is 32 bit
var flen = new byte[4];
flen [0] = 0x0;
flen [1] = buffer.ElementAt(0);
flen [2] = buffer.ElementAt(1);
flen [3] = buffer.ElementAt(2);
var frameLength = BitConverter.ToUInt32(flen.EnsureBigEndian(), 0);
// If we are expecting a payload that's bigger than what's in our buffer
// we should keep reading from the stream
if (buffer.Count - 9 < frameLength)
{
break;
}
// If we made it this far, the buffer has all the data we need, let's get it out to process
var data = buffer.GetRange(0, (int)frameLength + 9).ToArray();
// remove the processed info from the buffer
buffer.RemoveRange(0, (int)frameLength + 9);
// Get the Frame Type so we can instantiate the right subclass
var frameType = data [3]; // 4th byte in frame header is TYPE
// Don't need the flags yet
//var frameFlags = data [4]; // 5th byte is FLAGS
// we need to turn the stream id into a uint
var frameStreamIdData = new byte[4];
Array.Copy(data, 5, frameStreamIdData, 0, 4);
uint frameStreamId = Util.ConvertFromUInt31(frameStreamIdData.EnsureBigEndian());
Frame frame = null;
var ft = (FrameType)frameType;
switch (ft)
{
case FrameType.Data:
frame = new DataFrame();
break;
case FrameType.Headers:
frame = new HeadersFrame();
break;
case FrameType.Priority:
frame = new PriorityFrame();
break;
case FrameType.RstStream:
frame = new RstStreamFrame();
break;
case FrameType.Settings:
frame = new SettingsFrame();
break;
case FrameType.PushPromise:
frame = new PushPromiseFrame();
break;
case FrameType.Ping:
frame = new PingFrame();
break;
case FrameType.GoAway:
frame = new GoAwayFrame();
break;
case FrameType.WindowUpdate:
frame = new WindowUpdateFrame();
break;
case FrameType.Continuation:
frame = new ContinuationFrame();
break;
}
try {
// Call the specific subclass implementation to parse
if (frame != null)
{
frame.Parse(data);
}
} catch (Exception ex) {
Console.WriteLine("Parsing Frame Failed: " + ex);
throw ex;
}
// If we are waiting on the connection preface from server
// and it's the right frame type, set our resetevent
if (ft == FrameType.Settings &&
resetEventConnectionSettingsFrame != null &&
!resetEventConnectionSettingsFrame.IsSet)
{
var settingsFrame = frame as SettingsFrame;
// ack the settings from the server
settingsFrame.Ack = true;
await SendFrame(settingsFrame);
resetEventConnectionSettingsFrame.Set();
}
try {
if (frameStreamId == 0)
{
foreach (var s in Streams)
{
if (s.Value.State != StreamState.Closed)
{
s.Value.ProcessFrame(frame);
}
}
}
else
{
var stream = await GetStream(frameStreamId);
stream.ProcessFrame(frame);
}
} catch (Exception ex) {
Console.WriteLine("Error Processing Frame: " + ex);
throw ex;
}
}
}
else
{
// TODO: Connection error
//throw new Exception ("Connection Error");
break;
}
}
Disconnect();
}
public async Task<Http2Response> Send (Uri uri, HttpMethod method, NameValueCollection headers = null, byte[] data = null)
{
var semaphoreClose = new SemaphoreSlim(0);
await connection.Connect ();
var stream = await connection.CreateStream ();
stream.OnFrameReceived += (frame) =>
{
if (stream.State == StreamState.Closed)
semaphoreClose.Release();
};
//await connection.SendFrame(new SettingsFrame());
var headersFrame = new HeadersFrame (stream.StreamIdentifer);
headersFrame.Headers.Add (":method", method.Method.ToUpperInvariant ());
headersFrame.Headers.Add (":path", uri.PathAndQuery);
headersFrame.Headers.Add (":scheme", uri.Scheme);
headersFrame.Headers.Add (":authority", uri.Authority);
if (headers != null && headers.Count > 0)
headersFrame.Headers.Add (headers);
headersFrame.EndHeaders = true;
if (data != null && data.Length > 0) {
await connection.SendFrame (headersFrame);
var dataFrame = new DataFrame (stream.StreamIdentifer);
dataFrame.Data = data;
dataFrame.EndStream = true;
await connection.SendFrame (dataFrame);
} else {
headersFrame.EndStream = true;
await connection.SendFrame (headersFrame);
}
if (!await semaphoreClose.WaitAsync (connection.ConnectionTimeout))
throw new TimeoutException ();
var responseData = new List<byte> ();
var responseHeaders = new NameValueCollection ();
foreach (var f in stream.Frames) {
if (f.Type == FrameType.Headers) {
responseHeaders = (f as HeadersFrame)?.Headers ?? new NameValueCollection ();
} else if (f.Type == FrameType.Data) {
responseData.AddRange ((f as DataFrame).Data);
} else if (f.Type == FrameType.Continuation) {
var h = (f as ContinuationFrame).Headers ?? new NameValueCollection ();
responseHeaders.Add (h);
} else if (f.Type == FrameType.GoAway) {
var fga = f as GoAwayFrame;
if (fga != null && fga.AdditionalDebugData != null && fga.AdditionalDebugData.Length > 0)
responseData.AddRange (fga.AdditionalDebugData);
}
}
var strStatus = "500";
if (responseHeaders [":status"] != null)
strStatus = responseHeaders [":status"];
var statusCode = HttpStatusCode.OK;
Enum.TryParse<HttpStatusCode> (strStatus, out statusCode);
return new Http2Response {
Status = statusCode,
Stream = stream,
Headers = responseHeaders,
Body = responseData.ToArray ()
};
}
protected override async Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
{
if (connection == null)
{
connection = new Http2Connection(request.RequestUri.Host, (uint)request.RequestUri.Port, request.RequestUri.Scheme == Uri.UriSchemeHttps);
}
else
{
// TODO: Check if they tried to use a new host/port
}
await connection.Connect();
var resetComplete = new ManualResetEventSlim(false);
var stream = await connection.CreateStream();
stream.OnFrameReceived += frame => {
if (frame.IsEndStream)
{
resetComplete.Set();
}
};
var headersFrame = new HeadersFrame(stream.StreamIdentifer);
headersFrame.Headers.Add(":method", request.Method.Method.ToUpperInvariant());
headersFrame.Headers.Add(":path", request.RequestUri.PathAndQuery);
headersFrame.Headers.Add(":scheme", request.RequestUri.Scheme);
headersFrame.Headers.Add(":authority", request.RequestUri.Authority);
headersFrame.EndHeaders = true;
headersFrame.EndStream = true;
await connection.SendFrame(headersFrame);
resetComplete.Wait(connection.ConnectionTimeout);
var responseData = new List <byte> ();
var responseHeaders = new NameValueCollection();
foreach (var f in stream.Frames)
{
if (f.Type == FrameType.Headers)
{
responseHeaders = (f as HeadersFrame)?.Headers ?? new NameValueCollection();
}
else if (f.Type == FrameType.Data)
{
responseData.AddRange((f as DataFrame).Data);
//responseData += Encoding.ASCII.GetString ((f as DataFrame).Data);
}
else if (f.Type == FrameType.Continuation)
{
// TODO:
}
}
var httpStatusStr = responseHeaders.GetValues(":status")?.FirstOrDefault();
var httpStatus = HttpStatusCode.InternalServerError;
Enum.TryParse <HttpStatusCode> (httpStatusStr, out httpStatus);
var httpResponseMsg = new HttpResponseMessage(httpStatus);
foreach (var h in responseHeaders.AllKeys)
{
if (!h.StartsWith(":"))
{
httpResponseMsg.Headers.TryAddWithoutValidation(h, responseHeaders [h]);
}
}
httpResponseMsg.Content = new ByteArrayContent(responseData.ToArray());
return(httpResponseMsg);
}
public async Task <Http2Response> Send(Uri uri, HttpMethod method, NameValueCollection headers = null, byte[] data = null)
{
var semaphoreClose = new SemaphoreSlim(0);
await connection.Connect();
var stream = await connection.CreateStream();
stream.OnFrameReceived += (frame) =>
{
if (stream.State == StreamState.Closed)
{
semaphoreClose.Release();
}
};
//await connection.SendFrame(new SettingsFrame());
var headersFrame = new HeadersFrame(stream.StreamIdentifer);
headersFrame.Headers.Add(":method", method.Method.ToUpperInvariant());
headersFrame.Headers.Add(":path", uri.PathAndQuery);
headersFrame.Headers.Add(":scheme", uri.Scheme);
headersFrame.Headers.Add(":authority", uri.Authority);
if (headers != null && headers.Count > 0)
{
headersFrame.Headers.Add(headers);
}
headersFrame.EndHeaders = true;
if (data != null && data.Length > 0)
{
await connection.SendFrame(headersFrame);
var dataFrame = new DataFrame(stream.StreamIdentifer);
dataFrame.Data = data;
dataFrame.EndStream = true;
await connection.SendFrame(dataFrame);
}
else
{
headersFrame.EndStream = true;
await connection.SendFrame(headersFrame);
}
if (!await semaphoreClose.WaitAsync(connection.ConnectionTimeout))
{
throw new TimeoutException();
}
var responseData = new List <byte> ();
var responseHeaders = new NameValueCollection();
foreach (var f in stream.Frames)
{
if (f.Type == FrameType.Headers)
{
responseHeaders = (f as HeadersFrame)?.Headers ?? new NameValueCollection();
}
else if (f.Type == FrameType.Data)
{
responseData.AddRange((f as DataFrame).Data);
}
else if (f.Type == FrameType.Continuation)
{
var h = (f as ContinuationFrame).Headers ?? new NameValueCollection();
responseHeaders.Add(h);
}
else if (f.Type == FrameType.GoAway)
{
var fga = f as GoAwayFrame;
if (fga != null && fga.AdditionalDebugData != null && fga.AdditionalDebugData.Length > 0)
{
responseData.AddRange(fga.AdditionalDebugData);
}
}
}
var strStatus = "500";
if (responseHeaders [":status"] != null)
{
strStatus = responseHeaders [":status"];
}
var statusCode = HttpStatusCode.OK;
Enum.TryParse <HttpStatusCode> (strStatus, out statusCode);
return(new Http2Response {
Status = statusCode,
Stream = stream,
Headers = responseHeaders,
Body = responseData.ToArray()
});
}
async void read ()
{
int rx = 0;
byte[] b = new byte[4096];
while (true) {
try {
rx = await clientStream.ReadAsync(b, 0, b.Length);
} catch {
rx = -1;
}
if (rx > 0) {
Console.WriteLine ("RX: {0} bytes", rx);
for (int i = 0; i < rx; i++)
buffer.Add (b [i]);
while (true)
{
// We need at least 9 bytes to process the frame
// 9 octets is the frame header length
if (buffer.Count < 9)
break;
// Find out the frame length
// which is a 24 bit uint, so we need to convert this as c# uint is 32 bit
var flen = new byte[4];
flen [0] = 0x0;
flen [1] = buffer.ElementAt (0);
flen [2] = buffer.ElementAt (1);
flen [3] = buffer.ElementAt (2);
var frameLength = BitConverter.ToUInt32 (flen.EnsureBigEndian (), 0);
// If we are expecting a payload that's bigger than what's in our buffer
// we should keep reading from the stream
if (buffer.Count - 9 < frameLength)
break;
// If we made it this far, the buffer has all the data we need, let's get it out to process
var data = buffer.GetRange (0, (int)frameLength + 9).ToArray ();
// remove the processed info from the buffer
buffer.RemoveRange (0, (int)frameLength + 9);
// Get the Frame Type so we can instantiate the right subclass
var frameType = data [3]; // 4th byte in frame header is TYPE
// Don't need the flags yet
//var frameFlags = data [4]; // 5th byte is FLAGS
// we need to turn the stream id into a uint
var frameStreamIdData = new byte[4];
Array.Copy (data, 5, frameStreamIdData, 0, 4);
uint frameStreamId = Util.ConvertFromUInt31 (frameStreamIdData.EnsureBigEndian ());
Frame frame = null;
var ft = (FrameType)frameType;
switch (ft) {
case FrameType.Data:
frame = new DataFrame ();
break;
case FrameType.Headers:
frame = new HeadersFrame ();
break;
case FrameType.Priority:
frame = new PriorityFrame ();
break;
case FrameType.RstStream:
frame = new RstStreamFrame ();
break;
case FrameType.Settings:
frame = new SettingsFrame ();
break;
case FrameType.PushPromise:
frame = new PushPromiseFrame ();
break;
case FrameType.Ping:
frame = new PingFrame ();
break;
case FrameType.GoAway:
frame = new GoAwayFrame ();
break;
case FrameType.WindowUpdate:
frame = new WindowUpdateFrame ();
break;
case FrameType.Continuation:
frame = new ContinuationFrame ();
break;
}
try {
// Call the specific subclass implementation to parse
if (frame != null)
frame.Parse (data);
} catch (Exception ex) {
Console.WriteLine ("Parsing Frame Failed: " + ex);
throw ex;
}
// If we are waiting on the connection preface from server
// and it's the right frame type, set our resetevent
if (ft == FrameType.Settings
&& resetEventConnectionSettingsFrame != null
&& !resetEventConnectionSettingsFrame.IsSet) {
var settingsFrame = frame as SettingsFrame;
// ack the settings from the server
settingsFrame.Ack = true;
await SendFrame (settingsFrame);
resetEventConnectionSettingsFrame.Set ();
}
try {
if (frameStreamId == 0) {
foreach (var s in Streams) {
if (s.Value.State != StreamState.Closed)
s.Value.ProcessFrame(frame);
}
} else {
var stream = await GetStream(frameStreamId);
stream.ProcessFrame(frame);
}
} catch (Exception ex) {
Console.WriteLine ("Error Processing Frame: " + ex);
throw ex;
}
}
} else {
// TODO: Connection error
//throw new Exception ("Connection Error");
break;
}
}
Disconnect();
}
