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- syntax="proto2";
- message EchoRequest {
- required string message = 1;
- required string name = 2;
- };
- message EchoResponse {
- required string message = 1;
- optional int32 state = 2;
- optional int32 error = 3;
- };
- service Example {
- rpc Echo(EchoRequest) returns (EchoResponse);
- };
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