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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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33 lines
631 B
33 lines
631 B
8 years ago
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// This is an example of how to handle 'union' style messages
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// with nanopb, without allocating memory for all the message types.
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//
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// There is no official type in Protocol Buffers for describing unions,
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// but they are commonly implemented by filling out exactly one of
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// several optional fields.
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syntax = "proto2";
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message MsgType1
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{
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required int32 value = 1;
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}
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message MsgType2
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{
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required bool value = 1;
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}
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message MsgType3
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{
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required int32 value1 = 1;
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required int32 value2 = 2;
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}
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message UnionMessage
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{
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optional MsgType1 msg1 = 1;
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optional MsgType2 msg2 = 2;
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optional MsgType3 msg3 = 3;
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}
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