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29 lines
733 B
Go
29 lines
733 B
Go
package sockopt
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import (
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"syscall"
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"golang.org/x/sys/unix"
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)
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func control(opt *Options) func(network, address string, c syscall.RawConn) error {
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return func(network, address string, c syscall.RawConn) (err error) {
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return c.Control(func(fd uintptr) {
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if opt.bindIface != nil {
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switch network {
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case "tcp4", "udp4":
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unix.SetsockoptInt(int(fd), unix.IPPROTO_IP, unix.IP_BOUND_IF, opt.bindIface.Index)
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case "tcp6", "udp6":
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unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6, unix.IPV6_BOUND_IF, opt.bindIface.Index)
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}
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}
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if opt.reuseAddr {
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unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEADDR, 1)
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unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)
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}
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})
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}
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}
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