/// <summary>
/// Begin encoding headers in the first HEADERS frame.
/// </summary>
public static bool BeginEncodeHeaders(int statusCode, HPackEncoder hpackEncoder, Http2HeadersEnumerator headersEnumerator, Span <byte> buffer, out int length)
{
length = 0;
if (!hpackEncoder.EnsureDynamicTableSizeUpdate(buffer, out var sizeUpdateLength))
{
throw new HPackEncodingException(SR.net_http_hpack_encode_failure);
}
length += sizeUpdateLength;
if (!EncodeStatusHeader(statusCode, hpackEncoder, buffer.Slice(length), out var statusCodeLength))
{
throw new HPackEncodingException(SR.net_http_hpack_encode_failure);
}
length += statusCodeLength;
if (!headersEnumerator.MoveNext())
{
return(true);
}
// We're ok with not throwing if no headers were encoded because we've already encoded the status.
// There is a small chance that the header will encode if there is no other content in the next HEADERS frame.
var done = EncodeHeadersCore(hpackEncoder, headersEnumerator, buffer.Slice(length), throwIfNoneEncoded: false, out var headersLength);
length += headersLength;
return(done);
}
/// <summary>
/// Begin encoding headers in the first HEADERS frame.
/// </summary>
public static bool BeginEncodeHeaders(HPackEncoder hpackEncoder, Http2HeadersEnumerator headersEnumerator, Span <byte> buffer, out int length)
{
length = 0;
if (!hpackEncoder.EnsureDynamicTableSizeUpdate(buffer, out var sizeUpdateLength))
{
throw new HPackEncodingException(SR.net_http_hpack_encode_failure);
}
length += sizeUpdateLength;
if (!headersEnumerator.MoveNext())
{
return(true);
}
var done = EncodeHeadersCore(hpackEncoder, headersEnumerator, buffer.Slice(length), throwIfNoneEncoded: true, out var headersLength);
length += headersLength;
return(done);
}
