protobuf.js version: 6.3.0
protobuf js isn't encoding correctly messages with nested empty messages.
protobuf used:
syntax = 'proto2';
message Empty {
}
message A {
optional int32 a = 1;
}
message B {
oneof child {
A a = 1;
Empty b = 2;
}
}Snippet to reproduce:
root = protobuf.parse(protoString).root;
var Empty = root.lookup("Empty");
var A = root.lookup("A");
var B = root.lookup("B");
var msg = B.from({
b: {}
});
console.log("msg", msg);
var buffer = B.encode(msg).finish();
console.log(buffer); // Buffer is empty!, should be [18, 00]
console.log(B.decode(new Uint8Array(18, 0))); // Should be equal to msgjsfiddle link: https://jsfiddle.net/13c0re75/
Using the python binding for protobuf I got a different result.
Note: I used SetInParent - http://stackoverflow.com/questions/29643295/how-to-set-a-protobuf-field-which-is-an-empty-message-in-python
import example_pb2
import binascii
msg = example_pb2.B()
msg.b.SetInParent()
print "msg: ", msg
print "msg buffer: (hex string)", binascii.hexlify(msg.SerializeToString())
The result of the previous snippet is
msg: b {
}
msg buffer: (hex string) 1200
I've verified the same behavior with another binding of protobuf (https://github.com/protobuf-c/protobuf-c) and got the same results.
protobuf.js version: 6.3.0
protobuf js isn't encoding correctly messages with nested empty messages.
protobuf used:
syntax = 'proto2'; message Empty { } message A { optional int32 a = 1; } message B { oneof child { A a = 1; Empty b = 2; } }Snippet to reproduce:
jsfiddle link: https://jsfiddle.net/13c0re75/
Using the python binding for protobuf I got a different result.
Note: I used SetInParent - http://stackoverflow.com/questions/29643295/how-to-set-a-protobuf-field-which-is-an-empty-message-in-python
The result of the previous snippet is
I've verified the same behavior with another binding of protobuf (https://github.com/protobuf-c/protobuf-c) and got the same results.