nebula/udp/udp_windows.go

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//go:build !e2e_testing
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// +build !e2e_testing
package udp
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import (
"fmt"
"net"
"syscall"
"github.com/sirupsen/logrus"
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)
func NewListener(l *logrus.Logger, ip net.IP, port int, multi bool, batch int) (Conn, error) {
if multi {
//NOTE: Technically we can support it with RIO but it wouldn't be at the socket level
// The udp stack would need to be reworked to hide away the implementation differences between
// Windows and Linux
return nil, fmt.Errorf("multiple udp listeners not supported on windows")
}
rc, err := NewRIOListener(l, ip, port)
if err == nil {
return rc, nil
}
l.WithError(err).Error("Falling back to standard udp sockets")
return NewGenericListener(l, ip, port, multi, batch)
}
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func NewListenConfig(multi bool) net.ListenConfig {
return net.ListenConfig{
Control: func(network, address string, c syscall.RawConn) error {
if multi {
// There is no way to support multiple listeners safely on Windows:
// https://docs.microsoft.com/en-us/windows/desktop/winsock/using-so-reuseaddr-and-so-exclusiveaddruse
return fmt.Errorf("multiple udp listeners not supported on windows")
}
return nil
},
}
}
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func (u *GenericConn) Rebind() error {
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return nil
}