private OutputStream doCompress(OutputStream uncompressed, bool compress)
{
if(_compressionSupported)
{
if(compress && uncompressed.size() >= 100)
{
//
// Do compression.
//
IceInternal.Buffer cbuf = IceInternal.BZip2.compress(uncompressed.getBuffer(),
IceInternal.Protocol.headerSize,
_compressionLevel);
if(cbuf != null)
{
OutputStream cstream =
new OutputStream(uncompressed.instance(), uncompressed.getEncoding(), cbuf, true);
//
// Set compression status.
//
cstream.pos(9);
cstream.writeByte((byte)2);
//
// Write the size of the compressed stream into the header.
//
cstream.pos(10);
cstream.writeInt(cstream.size());
//
// Write the compression status and size of the compressed stream into the header of the
// uncompressed stream -- we need this to trace requests correctly.
//
uncompressed.pos(9);
uncompressed.writeByte((byte)2);
uncompressed.writeInt(cstream.size());
return cstream;
}
}
}
uncompressed.pos(9);
uncompressed.writeByte((byte)((_compressionSupported && compress) ? 1 : 0));
//
// Not compressed, fill in the message size.
//
uncompressed.pos(10);
uncompressed.writeInt(uncompressed.size());
return uncompressed;
}