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//
//     http://www.apache.org/licenses/LICENSE-2.0
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// +build go1.13

package tlscommon

import "crypto/tls"

// Define all the possible TLS version.
const (
	TLSVersionSSL30 TLSVersion = tls.VersionSSL30
	TLSVersion10    TLSVersion = tls.VersionTLS10
	TLSVersion11    TLSVersion = tls.VersionTLS11
	TLSVersion12    TLSVersion = tls.VersionTLS12
	TLSVersion13    TLSVersion = tls.VersionTLS13

	// TLSVersionMin is the min TLS version supported.
	TLSVersionMin = TLSVersionSSL30

	// TLSVersionMax is the max TLS version supported.
	TLSVersionMax = TLSVersion13

	// TLSVersionDefaultMin is the minimal default TLS version that is
	// enabled by default. TLSVersionDefaultMin is >= TLSVersionMin
	TLSVersionDefaultMin = TLSVersion11

	// TLSVersionDefaultMax is the max default TLS version that
	// is enabled by default.
	TLSVersionDefaultMax = TLSVersionMax
)

// TLSDefaultVersions list of versions of TLS we should support.
var TLSDefaultVersions = []TLSVersion{
	TLSVersion11,
	TLSVersion12,
	TLSVersion13,
}

var tlsProtocolVersions = map[string]TLSVersion{
	"SSLv3":   TLSVersionSSL30,
	"SSLv3.0": TLSVersionSSL30,
	"TLSv1":   TLSVersion10,
	"TLSv1.0": TLSVersion10,
	"TLSv1.1": TLSVersion11,
	"TLSv1.2": TLSVersion12,
	"TLSv1.3": TLSVersion13,
}

var tlsProtocolVersionsInverse = map[TLSVersion]string{
	TLSVersionSSL30: "SSLv3",
	TLSVersion10:    "TLSv1.0",
	TLSVersion11:    "TLSv1.1",
	TLSVersion12:    "TLSv1.2",
	TLSVersion13:    "TLSv1.3",
}
