You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

81 lines
1.2 KiB

package p2p
import (
"net"
"sync"
)
// ConnSet is a lookup table for connections and all their ips.
type ConnSet interface {
Has(net.Conn) bool
HasIP(net.IP) bool
Set(net.Conn, []net.IP)
Remove(net.Conn)
RemoveAddr(net.Addr)
}
type connSetItem struct {
conn net.Conn
ips []net.IP
}
type connSet struct {
sync.RWMutex
conns map[string]connSetItem
}
// NewConnSet returns a ConnSet implementation.
func NewConnSet() ConnSet {
return &connSet{
conns: map[string]connSetItem{},
}
}
func (cs *connSet) Has(c net.Conn) bool {
cs.RLock()
defer cs.RUnlock()
_, ok := cs.conns[c.RemoteAddr().String()]
return ok
}
func (cs *connSet) HasIP(ip net.IP) bool {
cs.RLock()
defer cs.RUnlock()
for _, c := range cs.conns {
for _, known := range c.ips {
if known.Equal(ip) {
return true
}
}
}
return false
}
func (cs *connSet) Remove(c net.Conn) {
cs.Lock()
defer cs.Unlock()
delete(cs.conns, c.RemoteAddr().String())
}
func (cs *connSet) RemoveAddr(addr net.Addr) {
cs.Lock()
defer cs.Unlock()
delete(cs.conns, addr.String())
}
func (cs *connSet) Set(c net.Conn, ips []net.IP) {
cs.Lock()
defer cs.Unlock()
cs.conns[c.RemoteAddr().String()] = connSetItem{
conn: c,
ips: ips,
}
}