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// Copyright (C) 2014 Nippon Telegraph and Telephone Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"encoding/json"
"fmt"
"log"
"log/syslog"
"net"
"os"
"github.com/osrg/gobgp/packet"
)
const (
DEFAULT_BMPD_HOST = "0.0.0.0"
DEFAULT_BMPD_PORT = "11019"
)
func processBMPClinet(conn net.Conn) {
tcpConn := conn.(*net.TCPConn)
defer tcpConn.Close()
for {
msg, err := bgp.ReadBMPMessage(tcpConn)
if err != nil {
fmt.Println(err)
log.Println("BMP client disconnected", conn.RemoteAddr())
break
}
j, _ := json.Marshal(msg)
log.Println(string(j))
}
}
func main() {
logwriter, err := syslog.New(syslog.LOG_INFO, "bmpd")
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
log.SetOutput(logwriter)
serverHost := os.Getenv("BMPD_HOST")
if serverHost == "" {
serverHost = DEFAULT_BMPD_HOST
}
serverPort := os.Getenv("BMPD_PORT")
if serverPort == "" {
serverPort = DEFAULT_BMPD_PORT
}
listener, err := net.Listen("tcp", serverHost+":"+serverPort)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
log.Println("listening on", serverHost+":"+serverPort)
for {
conn, err := listener.Accept()
log.Println("BMP client connected", conn.RemoteAddr())
if err != nil {
fmt.Fprintln(os.Stderr, err)
continue
}
go processBMPClinet(conn)
}
}
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