syntax = "proto3"; package v2ray.core.common.protocol; option go_package = "protocol"; option java_package = "com.v2ray.core.common.protocol"; option java_outer_classname = "HeadersProto"; enum SecurityType { NONE = 0; LEGACY = 1; AUTO = 2; AES128_GCM = 3; CHACHA20_POLY1305 = 4; } message SecurityConfig { SecurityType type = 1; }