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Add DestIpAddress() in Dialer interface

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Android client prepares an IP before proxy connection is established. It is useful when connecting to wireguard (or quic) outbound with domain address. E.g. engage.cloudflareclient.com:2408
This commit is contained in:
yuhan6665 2023-12-17 13:09:04 -05:00
parent 5a5e615b46
commit d60281d0a5
4 changed files with 91 additions and 3 deletions
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9
transport/internet/system_dialer.go
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@ -16,6 +16,7 @@ var effectiveSystemDialer SystemDialer = &DefaultSystemDialer{}
type SystemDialer interface {
Dial(ctx context.Context, source net.Address, destination net.Destination, sockopt *SocketConfig) (net.Conn, error)
DestIpAddress() net.IP
}
type DefaultSystemDialer struct {
@ -108,6 +109,10 @@ func (d *DefaultSystemDialer) Dial(ctx context.Context, src net.Address, dest ne
return dialer.DialContext(ctx, dest.Network.SystemString(), dest.NetAddr())
}
func (d *DefaultSystemDialer) DestIpAddress() net.IP {
return nil
}
type PacketConnWrapper struct {
Conn net.PacketConn
Dest net.Addr
@ -172,6 +177,10 @@ func (v *SimpleSystemDialer) Dial(ctx context.Context, src net.Address, dest net
return v.adapter.Dial(dest.Network.SystemString(), dest.NetAddr())
}
func (d *SimpleSystemDialer) DestIpAddress() net.IP {
return nil
}
// UseAlternativeSystemDialer replaces the current system dialer with a given one.
// Caller must ensure there is no race condition.
//