response.addHeader("Host","icap-server.net");
response.addHeader("ISTag","Serial-0815");
HttpRequest httpRequest = new DefaultHttpRequest(HttpVersion.HTTP_1_1,HttpMethod.POST,"/");
response.setHttpRequest(httpRequest);
httpRequest.addHeader("Host","www.origin-server.com");
httpRequest.addHeader("Accept","text/html, text/plain");
httpRequest.addHeader("Accept-Encoding","compress");
httpRequest.addHeader("Cookie","ff39fk3jur@4ii0e02i");
httpRequest.addHeader("If-None-Match","\"xyzzy\", \"r2d2xxxx\"");
ChannelBuffer buffer = ChannelBuffers.dynamicBuffer();
buffer.writeBytes("This is data that was returned by an origin server.".getBytes(IcapCodecUtil.ASCII_CHARSET));