mirror of
https://github.com/xjasonlyu/tun2socks.git
synced 2025-10-07 17:51:16 +08:00
25 lines
578 B
Go
Executable File
25 lines
578 B
Go
Executable File
package dialer
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import (
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"net"
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"syscall"
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"golang.org/x/sys/unix"
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)
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func bindToInterface(network, address string, c syscall.RawConn) error {
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ipStr, _, _ := net.SplitHostPort(address)
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if ip := net.ParseIP(ipStr); ip != nil && !ip.IsGlobalUnicast() {
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return nil
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}
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return c.Control(func(fd uintptr) {
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switch network {
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case "tcp4", "udp4":
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unix.SetsockoptInt(int(fd), syscall.IPPROTO_IP, syscall.IP_BOUND_IF, _boundInterface.Index)
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case "tcp6", "udp6":
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unix.SetsockoptInt(int(fd), syscall.IPPROTO_IPV6, syscall.IPV6_BOUND_IF, _boundInterface.Index)
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}
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})
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}
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