37 lines
1009 B
Go
37 lines
1009 B
Go
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/* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
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*/
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package conn
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import (
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"net"
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"syscall"
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)
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// controlFn is the callback function signature from net.ListenConfig.Control.
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// It is used to apply platform specific configuration to the socket prior to
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// bind.
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type controlFn func(network, address string, c syscall.RawConn) error
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// controlFns is a list of functions that are called from the listen config
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// that can apply socket options.
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var controlFns = []controlFn{}
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// listenConfig returns a net.ListenConfig that applies the controlFns to the
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// socket prior to bind. This is used to apply socket buffer sizing and packet
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// information OOB configuration for sticky sockets.
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func listenConfig() *net.ListenConfig {
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return &net.ListenConfig{
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Control: func(network, address string, c syscall.RawConn) error {
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for _, fn := range controlFns {
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if err := fn(network, address, c); err != nil {
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return err
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}
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}
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return nil
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},
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}
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}
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