def retrieve_object(params, &block)
AwsUtils.mandatory_arguments([:bucket, :key], params)
AwsUtils.allow_only([:bucket, :key, :headers, :md5], params)
params[:headers] = {} unless params[:headers]
req_hash = generate_rest_request('GET', params[:headers].merge(:url=>"#{params[:bucket]}/#{CGI::escape params[:key]}"))
resp = request_info(req_hash, S3HttpResponseBodyParser.new, &block)
resp[:verified_md5] = false
if(params[:md5] && (resp[:headers]['etag'].gsub(/\"/,'') == params[:md5]))
resp[:verified_md5] = true
end
resp
rescue
on_exception
end