You're absolutely right! Thanks! BR
Adam Cozzette <[email protected]> escreveu no dia terça, 13/10/2020 à(s) 18:07: > Serialized protocol buffers don't contain any metadata to indicate what > type they are, so you have to have some other mechanism to know what the > type is. I would guess that your .proto file probably has a parent message > containing the other messages, and the parent is probably the one that is > always sent. > > On Tue, Oct 13, 2020 at 6:25 AM Carlos Pereira <[email protected]> > wrote: > >> I forgot to mention that the file they sent us is using Protocol Buffers >> 2. >> >> BR, >> >> A terça-feira, 13 de outubro de 2020 à(s) 15:25:07 UTC+2, Carlos Pereira >> escreveu: >> >>> Hi, >>> >>> Currently I'm working with ProtoBuf at work. There's a client device >>> that sends us messages using ProtoBuf, so we can't change the protocol. The >>> first 3 bytes is the length of the ProtoBuf message with big endian bytes >>> order and then after that is the message itself. However, the .proto file >>> they sent us defines multiple types of messages. >>> >>> I'm using a CodedInputStream to first read the length of the serialized >>> message and then read this size. >>> >>> My problem is that after having bytes of the message I don't know which >>> class inside the protc generated file I should use to call the >>> *parseFrom*. >>> >>> Any idea? >>> >>> >>> Best Regards, >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "Protocol Buffers" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/protobuf/94523e6f-cc14-4928-a4f6-eb3d6a7f37e8n%40googlegroups.com >> <https://groups.google.com/d/msgid/protobuf/94523e6f-cc14-4928-a4f6-eb3d6a7f37e8n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- Carlos Duarte Pereira -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/protobuf/CAGS0_0tCOdWCUEABtFb1HQ2YctW9fRXp0e%2BmCBwfhWq2NEmZMg%40mail.gmail.com.
