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30 lines
526 B
Go
30 lines
526 B
Go
//go:build linux
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// +build linux
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package backtrace
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import (
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"net"
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"syscall"
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)
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func (t *Tracer) listen(network string, laddr *net.IPAddr) (*net.IPConn, error) {
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conn, err := net.ListenIP(network, laddr)
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if err != nil {
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return nil, err
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}
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raw, err := conn.SyscallConn()
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if err != nil {
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conn.Close()
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return nil, err
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}
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_ = raw.Control(func(fd uintptr) {
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err = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_IP, syscall.IP_HDRINCL, 1)
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})
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if err != nil {
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conn.Close()
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return nil, err
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}
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return conn, nil
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}
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