66 lines
1.3 KiB
Go
66 lines
1.3 KiB
Go
|
package srt
|
||
|
|
|
||
|
|
import (
|
||
|
|
"net"
|
||
|
|
"fmt"
|
||
|
|
)
|
||
|
|
|
||
|
|
type Intake struct {
|
||
|
|
max_conns int
|
||
|
|
tunnels []*Tunnel
|
||
|
|
socket net.PacketConn
|
||
|
|
buffer []byte
|
||
|
|
}
|
||
|
|
|
||
|
|
func NewIntake(l net.PacketConn, max_conns int) (*Intake) {
|
||
|
|
intake := new(Intake)
|
||
|
|
intake.max_conns = max_conns
|
||
|
|
intake.tunnels = make([]*Tunnel, 0)
|
||
|
|
intake.buffer = make([]byte, 1500)
|
||
|
|
intake.socket = l
|
||
|
|
|
||
|
|
return intake
|
||
|
|
}
|
||
|
|
|
||
|
|
func (intake *Intake) NewTunnel(l net.PacketConn, peer net.Addr) (*Tunnel) {
|
||
|
|
if len(intake.tunnels) < intake.max_conns {
|
||
|
|
tunnel := new(Tunnel)
|
||
|
|
tunnel.socket = l
|
||
|
|
tunnel.peer = peer
|
||
|
|
tunnel.queue = make(chan *Packet, 10)
|
||
|
|
return tunnel
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (intake *Intake) get_tunnel(peer net.Addr) (*Tunnel) {
|
||
|
|
var tunnel *Tunnel
|
||
|
|
for i := 0; i < len(intake.tunnels); i++ {
|
||
|
|
if intake.tunnels[i].broken {
|
||
|
|
intake.tunnels = append(intake.tunnels[:i], intake.tunnels[i+1:]...)
|
||
|
|
i--
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if intake.tunnels[i].peer.String() == peer.String() {
|
||
|
|
tunnel = intake.tunnels[i]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if tunnel == nil {
|
||
|
|
tunnel = intake.NewTunnel(intake.socket, peer)
|
||
|
|
}
|
||
|
|
return tunnel
|
||
|
|
}
|
||
|
|
|
||
|
|
func (intake *Intake) Read() {
|
||
|
|
n, peer, err := intake.socket.ReadFrom(intake.buffer)
|
||
|
|
if err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
tunnel := intake.get_tunnel(peer)
|
||
|
|
if tunnel == nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
fmt.Println(string(intake.buffer[:n]))
|
||
|
|
tunnel.queue <- &(Packet{intake.buffer[:n]})
|
||
|
|
}
|