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