mirror of
https://github.com/etcd-io/etcd.git
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48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
// Copyright 2023 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tlsutil
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import (
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"crypto/tls"
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"fmt"
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)
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type TLSVersion string
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// Constants for TLS versions.
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const (
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TLSVersionDefault TLSVersion = ""
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TLSVersion12 TLSVersion = "TLS1.2"
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TLSVersion13 TLSVersion = "TLS1.3"
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)
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// GetTLSVersion returns the corresponding tls.Version or error.
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func GetTLSVersion(version string) (uint16, error) {
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var v uint16
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switch version {
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case string(TLSVersionDefault):
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v = 0 // 0 means let Go decide.
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case string(TLSVersion12):
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v = tls.VersionTLS12
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case string(TLSVersion13):
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v = tls.VersionTLS13
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default:
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return 0, fmt.Errorf("unexpected TLS version %q (must be one of: TLS1.2, TLS1.3)", version)
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}
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return v, nil
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}
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