--- /dev/null
+/*
+GoVPN -- simple secure free software virtual private network daemon
+Copyright (C) 2014-2016 Sergey Matveev <stargrave@stargrave.org>
+
+This program 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.
+
+This program 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 <http://www.gnu.org/licenses/>.
+*/
+
+package govpn
+
+import (
+ "encoding/json"
+ "log"
+ "net"
+ "time"
+)
+
+const (
+ RWTimeout = 10 * time.Second
+)
+
+type KnownPeers map[string]**Peer
+
+// StatsProcessor is assumed to be run in background. It accepts
+// connection on statsPort, reads anything one send to them and show
+// information about known peers in serialized JSON format. peers
+// argument is a reference to the map with references to the peers as
+// values. Map is used here because of ease of adding and removing
+// elements in it.
+func StatsProcessor(statsPort net.Listener, peers *KnownPeers) {
+ var conn net.Conn
+ var err error
+ var data []byte
+ buf := make([]byte, 2<<8)
+ for {
+ conn, err = statsPort.Accept()
+ if err != nil {
+ log.Println("Error during accepting connection", err.Error())
+ continue
+ }
+ conn.SetDeadline(time.Now().Add(RWTimeout))
+ conn.Read(buf)
+ conn.Write([]byte("HTTP/1.0 200 OK\r\nContent-Type: application/json\r\n\r\n"))
+ var peersList []*Peer
+ for _, peer := range *peers {
+ peersList = append(peersList, *peer)
+ }
+ data, err = json.Marshal(peersList)
+ if err != nil {
+ panic(err)
+ }
+ conn.Write(data)
+ conn.Close()
+ }
+}