Its the job of the stream lib to suppress chunks just consisting of the gzip header.

[citadel.git] / libcitadel / lib / stringbuf.c

diff --git a/libcitadel/lib/stringbuf.c b/libcitadel/lib/stringbuf.c
index 5cbe17fdb560b003b3e3d25136e2ac73497e3da6..97260c42f1c9d97408c9f7ea62d41f13af208226 100644 (file)
--- a/libcitadel/lib/stringbuf.c
+++ b/libcitadel/lib/stringbuf.c
@@ -3025,7 +3025,7 @@ int StrBufStreamTranscode(eStreamType type, IOBuffer *Target, IOBuffer *In, cons
        case eZLibEncode:
        {
                z_enc_stream *stream = (z_enc_stream *)vStream;
-               int org_outbuf_len = stream->zstream.total_out;
+               int org_outbuf_len = stream->OutBuf.BufUsed;
                int err;
                unsigned int chunkavail;
 
@@ -3047,9 +3047,14 @@ int StrBufStreamTranscode(eStreamType type, IOBuffer *Target, IOBuffer *In, cons
                err = deflate(&stream->zstream,  (LastChunk) ? Z_FINISH : Z_NO_FLUSH);
 
                stream->OutBuf.BufUsed += (chunkavail - stream->zstream.avail_out);
-               /// todo + org_outbuf_len;
 
-               if (Target) SwapBuffers(Target->Buf, &stream->OutBuf);
+               if (Target && 
+                   (LastChunk ||
+                    (stream->OutBuf.BufUsed != org_outbuf_len)
+                           ))
+               {
+                       SwapBuffers(Target->Buf, &stream->OutBuf);
+               }
 
                if (stream->zstream.avail_in == 0)
                {
@@ -3075,7 +3080,7 @@ int StrBufStreamTranscode(eStreamType type, IOBuffer *Target, IOBuffer *In, cons
                        }
                }
                return (LastChunk && (err != Z_FINISH));
-
+               
        }
        break;
        case eZLibDecode: {