--- a/OrthancFramework/Sources/HttpServer/HttpStreamTranscoder.cpp	Thu Nov 05 17:20:49 2020 +0100
+++ b/OrthancFramework/Sources/HttpServer/HttpStreamTranscoder.cpp	Thu Nov 05 18:21:03 2020 +0100
@@ -98,6 +98,16 @@
     }
   }
 
+  HttpStreamTranscoder::HttpStreamTranscoder(IHttpStreamAnswer &source, CompressionType compression) :
+    source_(source),
+    sourceCompression_(compression),
+    bytesToSkip_(0),
+    skipped_(0),
+    currentChunkOffset_(0),
+    ready_(false)
+  {
+  }
+
 
   HttpCompression HttpStreamTranscoder::SetupHttpCompression(bool gzipAllowed,
                                                              bool deflateAllowed)
@@ -122,6 +132,16 @@
     }
   }
 
+  bool HttpStreamTranscoder::HasContentFilename(std::string &filename)
+  {
+    return source_.HasContentFilename(filename);
+  }
+
+  std::string HttpStreamTranscoder::GetContentType()
+  {
+    return source_.GetContentType();
+  }
+
 
   uint64_t HttpStreamTranscoder::GetContentLength()
   {