Hi,
See below for more information.
On Fri, 2009-08-07 at 16:58 +0200, Brice Figureau wrote:
> Hi,
>
> Using Protobuf 2.1 with the following proto file:
>
> message Message {
> enum Type {
> AUTH = 100;
> }
>
> required Type type = 1;
> optional int32 id = 2;
>
> extensions 100 to max;
> }
>
> message AuthRequest {
>
> extend Message {
> optional AuthRequest auth_request = 100;
> }
>
> required string name = 1;
> required string pass = 2;
> optional string nonce = 3;
> optional string hmac = 4;
> }
>
> When setting name and pass to arbitray values, I get the following
> bytes:
> {8, 100, 16, 0, -94, 6, 40, 10, 4, 116, 101, 115, 116, 18, 32, 48, 57,
> 56, 70, 54, 66, 67, 68, 52, 54, 50, 49, 68, 51, 55, 51, 67, 65, 68, 69,
> 52, 69, 56, 51, 50, 54, 50, 55, 66, 52, 70, 54}.
>
> If I print to text the corresponding message:
> type: AUTH
> id: 0
> [game.req.AuthRequest.auth_request] {
> name: "test"
> pass: "098F6BCD4621D373CADE4E832627B4F6"
> }
>
> Feeding back this byte array to Message whit this code:
> byte[] out = {8, 100, 16, 0, -94, 6, 40, 10, 4, 116, 101, 115, 116, 18,
> 32, 48, 57, 56, 70, 54, 66, 67, 68, 52, 54, 50, 49, 68, 51, 55, 51, 67,
> 65, 68, 69, 52, 69, 56, 51, 50, 54, 50, 55, 66, 52, 70, 54};
> Message m = Message.parseFrom(out);
> assertTrue(m.hasExtension(AuthRequest.auth_request));
>
> I don't get any extension number 100 (getExtension returns null,
> hasExtension is false and when I debug the program, there's nothing in
> the extension FieldSet).
>
> It all looks like the field 100 is parsed as an Unknown field.
> When I text print the message, I get:
>
> type: AUTH
> id: 0
> 100: "\n\004test\022 098F6BCD4621D373CADE4E832627B4F6"
>
> So yes, the data is here, but it isn't parsed as a known or valid
> extension.
>
> So simplifying the code, I end-up with the following non passing unit
> test:
>
> AuthRequest req =
> AuthRequest.newBuilder().setName("test").setPass("test").build();
>
> Message src =
> Message.newBuilder().setType(Type.AUTH).setExtension(AuthRequest.authRequest,
> req).build();
> Message m = Message.parseFrom(src.toByteArray());
>
> assertTrue(m.hasExtension(AuthRequest.authRequest));
I used protoc to encode the correct textual representation, and I get
the exact same byte array as was produced by my java code, so
serialization seems to be OK.
Using protoc --decode from the same binary content, then it prints the
correct content, so the C version seems to work fine, which means only
the Java version has some issues with deserialization.
--
Brice Figureau
My Blog: http://www.masterzen.fr/
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