"Life is all about sharing. If we are good at something, pass it on." - Mary Berry

How a gRPC message uses length-prefixed framing?


Once we have the encoded data to send to the other end, we need to package the data in a way that other end can easily extract the information. gRPC uses a message framing technique called length-prefixed framing.

Filter gRPC messages:

1$ tshark -r grpc.pcapng -Y 'grpc'

Find out a stream: DATA:

1216 923.033355 →    GRPC 108 DATA[1] (GRPC) (PROTOBUF)

and show the packet details:

1tshark -r grpc.pcapng -Y "frame.number == 216" -V