/
net.go
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/
net.go
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/*
* Copyright (C) 2020-2022, IrineSistiana
*
* This file is part of mosdns.
*
* mosdns is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* mosdns is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package utils
import (
"net"
"net/netip"
)
// GetIPFromAddr returns a net.IP from the given net.Addr.
// addr can be *net.TCPAddr, *net.UDPAddr, *net.IPNet, *net.IPAddr
// Will return nil otherwise.
func GetIPFromAddr(addr net.Addr) (ip net.IP) {
switch v := addr.(type) {
case *net.TCPAddr:
return v.IP
case *net.UDPAddr:
return v.IP
case *net.IPNet:
return v.IP
case *net.IPAddr:
return v.IP
}
return nil
}
// GetAddrFromAddr returns netip.Addr from net.Addr.
// See also: GetIPFromAddr.
func GetAddrFromAddr(addr net.Addr) netip.Addr {
a, _ := netip.AddrFromSlice(GetIPFromAddr(addr))
return a
}
// SplitSchemeAndHost splits addr to protocol and host.
func SplitSchemeAndHost(addr string) (protocol, host string) {
if protocol, host, ok := SplitString2(addr, "://"); ok {
return protocol, host
} else {
return "", addr
}
}