Function buildRetryConfigList

ech.go:653–669

(keys []EncryptedClientHelloKey)

}

func buildRetryConfigList(keys []EncryptedClientHelloKey) ([]byte, error) {
	var atLeastOneRetryConfig bool
	var retryBuilder cryptobyte.Builder
	retryBuilder.AddUint16LengthPrefixed(func(b *cryptobyte.Builder) {
		for _, c := range keys {
			if !c.SendAsRetry {
				continue
			}
			atLeastOneRetryConfig = true
			b.AddBytes(c.Config)
		}
	})
	if !atLeastOneRetryConfig {
		return nil, nil
	}
	return retryBuilder.Bytes()
}