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652d49182a
2. rule: add dnsserver to ip rule map; 3. dns: add DNSAnswerHandler so we can define a custom handler when a domain resolved
41 lines
665 B
Go
41 lines
665 B
Go
// https://tools.ietf.org/html/rfc1035
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package main
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// DNSTun .
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type DNSTun struct {
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*Forwarder // as client
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sDialer Dialer // dialer for server
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raddr string
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udp *DNS
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tcp *TCPTun
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}
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// NewDNSTun returns a dns forwarder.
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func NewDNSTun(addr, raddr string, sDialer Dialer) (*DNSTun, error) {
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s := &DNSTun{
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Forwarder: NewForwarder(addr, nil),
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sDialer: sDialer,
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raddr: raddr,
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}
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s.udp, _ = NewDNS(addr, raddr, sDialer)
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s.tcp, _ = NewTCPTun(addr, raddr, sDialer)
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return s, nil
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}
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// ListenAndServe .
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func (s *DNSTun) ListenAndServe() {
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if s.udp != nil {
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go s.udp.ListenAndServe()
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}
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if s.tcp != nil {
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s.tcp.ListenAndServe()
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}
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}
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