/// <summary>Writes a request header body This implementation is slightly more efficient than the generated code
/// because it avoids the allocation of a string[] to write the location.</summary>
internal static void WriteIce2RequestHeaderBody(
this OutputStream ostr,
Identity identity,
string facet,
IReadOnlyList <string> location,
string operation,
bool idempotent,
DateTime deadline,
IReadOnlyDictionary <string, string> context)
{
Debug.Assert(ostr.Encoding == Encoding);
// All bits are set to true by default, and true means the corresponding value is set.
BitSequence bitSequence = ostr.WriteBitSequence(5);
identity.IceWrite(ostr);
if (facet.Length > 0)
{
ostr.WriteString(facet);
}
else
{
bitSequence[0] = false;
}
if (location.Count > 0)
{
ostr.WriteSequence(location, OutputStream.IceWriterFromString);
}
else
{
bitSequence[1] = false;
}
ostr.WriteString(operation);
if (idempotent)
{
ostr.WriteBool(true);
}
else
{
bitSequence[2] = false;
}
bitSequence[3] = false; // TODO: source for priority.
// DateTime.MaxValue represents an infinite deadline and it is encoded as -1
ostr.WriteVarLong(
deadline == DateTime.MaxValue ? -1 : (long)(deadline - DateTime.UnixEpoch).TotalMilliseconds);
if (context.Count > 0)
{
ostr.WriteDictionary(context, OutputStream.IceWriterFromString, OutputStream.IceWriterFromString);
}
else
{
bitSequence[4] = false;
}
}
internal override async ValueTask SendAsync(
long streamId,
OutgoingFrame frame,
bool fin,
CancellationToken cancel)
{
var data = new List <ArraySegment <byte> >();
var ostr = new OutputStream(Encoding, data);
FrameType frameType = fin ? FrameType.StreamLast : FrameType.Stream;
ostr.WriteByte((byte)frameType);
OutputStream.Position sizePos = ostr.StartFixedLengthSize(4);
ostr.WriteVarLong(streamId);
OutputStream.Position ice2HeaderPos = ostr.Tail;
if (frame is OutgoingRequestFrame requestFrame)
{
ostr.WriteByte((byte)Ice2Definitions.FrameType.Request);
}
else if (frame is OutgoingResponseFrame responseFrame)
{
ostr.WriteByte((byte)Ice2Definitions.FrameType.Response);
}
else
{
Debug.Assert(false);
return;
}
ostr.WriteSize(frame.Size);
int ice2HeaderSize = ostr.Tail.Offset - ice2HeaderPos.Offset;
data[^ 1] = data[^ 1].Slice(0, ostr.Tail.Offset); // TODO: Shouldn't this be the job of ostr.Finish()?