38 lines
884 B
Go
38 lines
884 B
Go
// Copyright 2016 Mikio Hara. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package tcpopt
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import (
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"fmt"
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"sync"
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)
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var parserMu sync.RWMutex
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// Register registers a socket option parser.
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func Register(level, name int, fn func([]byte) (Option, error)) {
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parserMu.Lock()
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parsers[int64(level)<<32|int64(name)] = fn
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parserMu.Unlock()
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}
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// Unregister unregisters a socket option parser.
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func Unregister(level, name int) {
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parserMu.Lock()
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delete(parsers, int64(level)<<32|int64(name))
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parserMu.Unlock()
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}
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// Parse parses a socket option.
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func Parse(level, name int, b []byte) (Option, error) {
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parserMu.RLock()
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defer parserMu.RUnlock()
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fn, ok := parsers[int64(level)<<32|int64(name)]
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if !ok {
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return nil, fmt.Errorf("parser for level=%#x name=%#x not found", level, name)
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}
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return fn(b)
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}
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