gfwproxyshadowsocksdocker-imagegogolanggvisornatnetworksocks4socks5tcpip-stacktortun-devicetun2sockstunneludpwireguard
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33 lines
650 B
33 lines
650 B
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 setSocketOptions(network, address string, c syscall.RawConn, opts *Options) (err error) {
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if opts == nil || !isTCPSocket(network) && !isUDPSocket(network) {
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return
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}
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var innerErr error
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err = c.Control(func(fd uintptr) {
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host, _, _ := net.SplitHostPort(address)
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if ip := net.ParseIP(host); ip != nil && !ip.IsGlobalUnicast() {
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return
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}
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if opts.RoutingMark != 0 {
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if innerErr = unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_RTABLE, opts.RoutingMark); innerErr != nil {
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return
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}
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}
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})
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if innerErr != nil {
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err = innerErr
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}
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return
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}
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