68 lines
1.1 KiB
Go
68 lines
1.1 KiB
Go
package torrent
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import (
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"net"
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"strconv"
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)
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// Extracts the port as an integer from an address string.
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func addrPortOrZero(addr net.Addr) int {
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switch raw := addr.(type) {
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case *net.UDPAddr:
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return raw.Port
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case *net.TCPAddr:
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return raw.Port
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default:
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_, port, err := net.SplitHostPort(addr.String())
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if err != nil {
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return 0
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}
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i64, err := strconv.ParseInt(port, 0, 0)
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if err != nil {
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panic(err)
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}
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return int(i64)
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}
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}
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func addrIpOrNil(addr net.Addr) net.IP {
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if addr == nil {
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return nil
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}
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switch raw := addr.(type) {
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case *net.UDPAddr:
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return raw.IP
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case *net.TCPAddr:
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return raw.IP
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default:
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host, _, err := net.SplitHostPort(addr.String())
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if err != nil {
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return nil
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}
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return net.ParseIP(host)
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}
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}
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type ipPortAddr struct {
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IP net.IP
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Port int
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}
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func (ipPortAddr) Network() string {
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return ""
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}
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func (me ipPortAddr) String() string {
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return net.JoinHostPort(me.IP.String(), strconv.FormatInt(int64(me.Port), 10))
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}
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func tryIpPortFromNetAddr(na net.Addr) (ret ipPortAddr, ok bool) {
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ret.IP = addrIpOrNil(na)
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if ret.IP == nil {
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return
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}
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ret.Port = addrPortOrZero(na)
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ok = true
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return
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}
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