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required uint32 tag = 1
required bool isResponse = 2
required uint32 msgType = 4
optional bytes payload = 5
optional string errorDescription = 6
optional VersionInfo versionInfo = 7
Used in: RPCBase
SUCCESS = 0
FAILED = 1
NOTFOUND = 2
Used in: RPCBase
required uint32 vmajor = 1
required uint32 vminor = 2
optional string cookie = 3