mirror of
https://github.com/hackdiaz-dev/free-turn-proxy.git
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smediainfo
3481de79a3
Checked type assertions (errcheck) and Close() error returns to satisfy golangci-lint.
31 lines
1012 B
Go
31 lines
1012 B
Go
package mobile
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import (
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"syscall"
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"github.com/samosvalishe/free-turn-proxy/internal/netctl"
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)
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// Protector is implemented by the host to keep the client's own sockets out of
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// a VPN tunnel it is feeding. On Android that is VpnService.protect(fd); on
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// other tun-based hosts the equivalent. Without it the client's TURN / VK API /
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// DNS traffic is routed back into the tunnel and the connection deadlocks.
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type Protector interface {
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// Protect is invoked once for every outbound socket the client opens, with
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// the socket's raw file descriptor, before it connects.
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Protect(fd int) bool
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}
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// SetProtect installs the host socket protector. Pass nil to clear it (the
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// default is a no-op, so desktop builds are unaffected). May be called before
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// or after Start; it is read at dial time.
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func SetProtect(p Protector) {
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if p == nil {
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netctl.SetControl(nil)
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return
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}
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netctl.SetControl(func(_, _ string, c syscall.RawConn) error {
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return c.Control(func(fd uintptr) { p.Protect(int(fd)) })
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})
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}
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