.net - ProtoBuf-Net to do raw read -

i want have simple piece of code iterate through random stream of protocol buffers, , print out contents without having explicit understanding of structural contents. equivalent xmlreader.read() inside while loop

using (protobuf.protoreader protoreader =        new protobuf.protoreader(stream1, null,              new protobuf.serializationcontext { })) {     protoreader.readfieldheader();     while (protoreader.wiretype != protobuf.wiretype.none)     {        switch (protoreader.wiretype)        {        case protobuf.wiretype.fixed64:            console.writeline(protoreader.readint64());            break;        case protobuf.wiretype.fixed32:            console.writeline(protoreader.readint32());            break;        case protobuf.wiretype.startgroup:            console.writeline(protoreader.readint32());            break;        default:            console.writeline(protoreader.wiretype);            break;        }     } } 

however don't know how advance protocol buffer next element. in test, keeps returning "startgroup" , never advancing. how can advance next element in stream?

the readfieldheader() should inside loop:

while(protoreader.readfieldheader() > 0) {     //... } 

note: if don't know how process given field, there .skipfield() method correctly read data - example:

default:     console.writeline(protoreader.wiretype);     protoreader.skipfield();     break; 

you must read or skip data once per field-header.

in case of groups , sub-items, need use startsubitem etc:

var tok = protoreader.startsubitem(protoreader); // inner while-loop, etc protoreader.endsubitem(tok); 

alternatively: use skipfield().