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Linux runs exactly as before when both bridge interfaces exist. When they do not, the lone default-route interface is monitored, and a single interface now draws a single UI pane instead of an empty second one. macOS is newly supported: a running VPN tunnel (utun) is monitored as the primary pane alongside the physical default-route interface, or the physical interface alone when no VPN is up. Detection lives in internal/netdetect: interface/route data types, pure selection logic keyed on OS name, and route parsers, all unit-tested on Linux for both platforms. Only the real route query and the per-platform TCP dial binding (source address on Linux, IP_BOUND_IF on macOS) are build-tagged. Ping argument construction is a pure, OS-keyed function. NewMonitor now takes a list of interfaces. Model: opus-4-8
28 lines
613 B
Go
28 lines
613 B
Go
//go:build darwin
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package netdetect
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import (
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"context"
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"fmt"
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"os/exec"
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"time"
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)
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// routeQueryTimeout bounds the external route-table query.
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const routeQueryTimeout = 2 * time.Second
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// DefaultRoutes returns the host's IPv4 default routes, read from the macOS
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// routing table.
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func DefaultRoutes() ([]Route, error) {
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ctx, cancel := context.WithTimeout(context.Background(), routeQueryTimeout)
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defer cancel()
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out, err := exec.CommandContext(ctx, "netstat", "-rn", "-f", "inet").Output()
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if err != nil {
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return nil, fmt.Errorf("running netstat: %w", err)
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}
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return parseNetstat(string(out)), nil
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}
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