C ++ uses protobuf to transmit a byte array containing \ 0 in the middle, and a protobuf Array

C ++ uses protobuf to transmit a byte array containing \ 0 in the middle, and a protobuf Array

The C ++ implementation of protocol buffers returns the byte and string typesStd: string. This structure contains a length function telling you how long the corresponding data is (as well as the data itself.) Thus there is no special significance of embeded\ 0Characters.

The setting functions accept a string too, or there are versions that accept a buffer and length. If you want to set a field you can just do this:

Pb. set_foo (std: string (data, data_length ));

Or

Pb. set_foo (data, data_length );

The above method is still converted to string (to the first \ 0) during reading)

You can solve the problem in this way:

Pt. mutable_foo (). Add length to the Protocol.