在android上使用protobuf将数据发送到WCF服务（使用protobuf.net）

I need to send a object containing 256kb to 18Mb of data from an android device to a WCF service. I just found out about protobuf.net and agree this is the way to go. Most examples I find showing use of protobuf on android are designed to make queries like:I need to send a object containing 256kb to 18M