Thank you, it worked. I used "any".
google::protobuf::Any any;
rc = any.ParseFromArray(ptr, len);
if (!rc) {
return false;
}
std::string data;
if (any.Is<Struct>()) {
On Sunday, January 15, 2023 at 4:15:08 AM UTC-5 [email protected] wrote:
> Without seeing the actual proto one has to make some assumptions.
>
> Assuming MessageType1-5 are all intended to be "top-level" messages, here
> are some possibilities I can think of; others may more/better ideas.
>
> 1. Attempt to deserialize each type
> 1. I think this might still succeed if the data on the wire
> contains fields that match all of the field IDs (and types?) of any
> message
> you're attempting to deserialize.
> 2. Ask if the protocol can be changed to have a single top-level
> message. This top-level message might use either *oneof*, or *any.*
> 1. *oneof* allows testing for the type to deserialize but requires
> that the proto be changed when new messages types are added.
> 2. *any* does not require that proto change when new messages types
> are added. However, it does require attempting to deserialize the
> different
> message types your receiver cares about.
> 1. Could be considered safer than sampling attempting to
> deserialize each message type because *any* data on the wire
> contains "type". However, your client must still be compiled with
> the
> metadata for that type.
> 3. Ask if the protocol can be change to send the serialized proto
> allowing fully dynamic messages on the wire where the on the wire data
> contains all metadata necessary to deserialize the message.
>
> On Saturday, January 14, 2023 at 12:11:17 AM UTC-8 [email protected]
> wrote:
>
>> Hi,
>>
>> I am getting Proto3 messages from a server on the tcp, and the server
>> team provided the proto3 file which I compiled and included in my project.
>> So I parse the message in the following way successfully: Example message
>> type 1:
>>
>> MessageType1 m1;
>> bool ok = m1.ParseFromArray(tcp_buffer, tcp_len);
>>
>> My question is: how would I parse a message from 5 possibly available,
>> MessageType1-5? Is there any factory or reflection based parsing?
>>
>> Please note my tcp buffer for a given message is complete, i.e. I have
>> the full message encoded in the tcp_buffer from the server.
>>
>>
>> Any help will be appreciated.
>>
>> Thanks,
>> Vimla
>>
>
--
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/a2bdf349-1be9-4528-adc0-582cb92b6405n%40googlegroups.com.
