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