How to add a int array in protobuf message

Question

I have to compose a protobuf message which should have 1 integer variables and a integer array.

package protobuf;

message myProto {

optional uint32 message_id         


        

Answer 1

Array is mapped via "repeated":

 repeated int32 data = 4;

Note you might want sint32/uint32. Also note that in all three cases "packed arrays" can be used, which are more efficient;

repeated int32 data = 4 [packed=true];