public async Task TranscodeStream(RequestDelegate inner)
{
var requestReader = _httpContextAccessor.HttpContext.Request.BodyReader;
var responseWriter = _httpContextAccessor.HttpContext.Response.BodyWriter;
var requestPipe = new Pipe();
var responsePipe = new Pipe();
var decode = Base64Pipe.Decode(requestReader, requestPipe.Writer);
var encode = Base64Pipe.Encode(responsePipe.Reader, responseWriter);
using (new BodyRedirector(_httpContextAccessor.HttpContext, requestPipe, responsePipe))
{
var next = inner(_httpContextAccessor.HttpContext);
var length = await decode;
requestPipe.Writer.Complete();
_logger.LogTrace("Decoded {Length} bytes from base64", length);
await next;
await responsePipe.Writer.FlushAsync(); // TODO: May be unnecessary
responsePipe.Writer.Complete();
}
{
var length = await encode;
responsePipe.Reader.Complete();
_logger.LogTrace("Encoded {Length} bytes to base64", length);
}
await encode;
}
public async Task TranscodeTrailers(IHeaderDictionary trailers)
{
var pipe = new Pipe();
var stream = GrpcWebTrailers.Stream(trailers, pipe.Writer);
var encode = Base64Pipe.Encode(pipe.Reader, _httpContextAccessor.HttpContext.Response.BodyWriter);
await stream;
pipe.Writer.Complete();
var length = await encode;
pipe.Reader.Complete();
_logger.LogTrace("Encoded {Length} bytes to base64", length);
}