public void Encode(HTTP2Stream context, HTTPRequest request, Queue <HTTP2FrameHeaderAndPayload> to, UInt32 streamId)
{
// Add usage of SETTINGS_MAX_HEADER_LIST_SIZE to be able to create a header and one or more continuation fragments
// (https://httpwg.org/specs/rfc7540.html#SettingValues)
using (BufferPoolMemoryStream bufferStream = new BufferPoolMemoryStream())
{
WriteHeader(bufferStream, ":method", HTTPRequest.MethodNames[(int)request.MethodType]);
// add path
WriteHeader(bufferStream, ":path", request.CurrentUri.PathAndQuery);
// add authority
WriteHeader(bufferStream, ":authority", request.CurrentUri.Authority);
// add scheme
WriteHeader(bufferStream, ":scheme", "https");
//bool hasBody = false;
// add other, regular headers
request.EnumerateHeaders((header, values) =>
{
if (header.Equals("connection", StringComparison.OrdinalIgnoreCase) ||
header.Equals("te", StringComparison.OrdinalIgnoreCase) ||
header.Equals("host", StringComparison.OrdinalIgnoreCase))
{
return;
}
//if (!hasBody)
// hasBody = header.Equals("content-length", StringComparison.OrdinalIgnoreCase) && int.Parse(values[0]) > 0;
// https://httpwg.org/specs/rfc7540.html#HttpSequence
// The chunked transfer encoding defined in Section 4.1 of [RFC7230] MUST NOT be used in HTTP/2.
if (header.Equals("Transfer-Encoding", StringComparison.OrdinalIgnoreCase))
{
// error!
return;
}
// https://httpwg.org/specs/rfc7540.html#HttpHeaders
// Just as in HTTP/1.x, header field names are strings of ASCII characters that are compared in a case-insensitive fashion.
// However, header field names MUST be converted to lowercase prior to their encoding in HTTP/2.
// A request or response containing uppercase header field names MUST be treated as malformed
if (header.Any(Char.IsUpper))
{
header = header.ToLower();
}
for (int i = 0; i < values.Count; ++i)
{
WriteHeader(bufferStream, header, values[i]);
if (HTTPManager.Logger.Level <= Logger.Loglevels.Information)
{
HTTPManager.Logger.Information("HPACKEncoder", string.Format("[{0}] - Encode - Header({1}/{2}): '{3}': '{4}'", context.Id, i + 1, values.Count, header, values[i]), this.parent.Context, context.Context, request.Context);
}
}
}, true);
var upStreamInfo = request.GetUpStream();
CreateHeaderFrames(to,
streamId,
bufferStream.ToArray(true),
(UInt32)bufferStream.Length,
upStreamInfo.Stream != null);
}
}