065e07da4b
for convenience. Signed-off-by: Izuru Yakumo <yakumo.izuru@chaotic.ninja> git-svn-id: file:///srv/svn/repo/suika/trunk@822 f0ae65fe-ee39-954e-97ec-027ff2717ef4
63 lines
1.9 KiB
Go
63 lines
1.9 KiB
Go
package proxyproto
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// AddressFamilyAndProtocol represents address family and transport protocol.
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type AddressFamilyAndProtocol byte
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const (
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UNSPEC AddressFamilyAndProtocol = '\x00'
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TCPv4 AddressFamilyAndProtocol = '\x11'
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UDPv4 AddressFamilyAndProtocol = '\x12'
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TCPv6 AddressFamilyAndProtocol = '\x21'
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UDPv6 AddressFamilyAndProtocol = '\x22'
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UnixStream AddressFamilyAndProtocol = '\x31'
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UnixDatagram AddressFamilyAndProtocol = '\x32'
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)
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// IsIPv4 returns true if the address family is IPv4 (AF_INET4), false otherwise.
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func (ap AddressFamilyAndProtocol) IsIPv4() bool {
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return ap&0xF0 == 0x10
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}
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// IsIPv6 returns true if the address family is IPv6 (AF_INET6), false otherwise.
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func (ap AddressFamilyAndProtocol) IsIPv6() bool {
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return ap&0xF0 == 0x20
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}
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// IsUnix returns true if the address family is UNIX (AF_UNIX), false otherwise.
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func (ap AddressFamilyAndProtocol) IsUnix() bool {
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return ap&0xF0 == 0x30
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}
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// IsStream returns true if the transport protocol is TCP or STREAM (SOCK_STREAM), false otherwise.
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func (ap AddressFamilyAndProtocol) IsStream() bool {
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return ap&0x0F == 0x01
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}
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// IsDatagram returns true if the transport protocol is UDP or DGRAM (SOCK_DGRAM), false otherwise.
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func (ap AddressFamilyAndProtocol) IsDatagram() bool {
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return ap&0x0F == 0x02
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}
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// IsUnspec returns true if the transport protocol or address family is unspecified, false otherwise.
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func (ap AddressFamilyAndProtocol) IsUnspec() bool {
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return (ap&0xF0 == 0x00) || (ap&0x0F == 0x00)
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}
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func (ap AddressFamilyAndProtocol) toByte() byte {
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if ap.IsIPv4() && ap.IsStream() {
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return byte(TCPv4)
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} else if ap.IsIPv4() && ap.IsDatagram() {
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return byte(UDPv4)
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} else if ap.IsIPv6() && ap.IsStream() {
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return byte(TCPv6)
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} else if ap.IsIPv6() && ap.IsDatagram() {
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return byte(UDPv6)
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} else if ap.IsUnix() && ap.IsStream() {
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return byte(UnixStream)
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} else if ap.IsUnix() && ap.IsDatagram() {
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return byte(UnixDatagram)
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}
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return byte(UNSPEC)
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}
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