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main.go
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main.go
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package main
import (
"log"
"math/rand"
"net"
"os"
"time"
"github.com/matti/betterio"
"github.com/matti/sockser/pkg/globals"
"github.com/matti/sockser/pkg/health"
"github.com/matti/sockser/pkg/types"
)
func main() {
var addresses []string
addresses = append(addresses, "127.0.0.1:1081")
addresses = append(addresses, "127.0.0.1:1082")
rand.Seed(time.Now().UnixNano())
globals.Config = &types.Config{
HealthcheckUrl: "http://127.0.0.1:8000",
Timeout: 3 * time.Second,
Fallback: &types.Upstream{Address: "127.0.0.1:2080"},
Index: rand.Intn(len(addresses)),
Stats: 15 * time.Second,
}
var upstreams []*types.Upstream
for _, address := range addresses {
upstreams = append(upstreams, &types.Upstream{
Address: address,
})
}
go health.Run(upstreams)
for {
if globals.Best != nil {
break
}
time.Sleep(time.Millisecond * 100)
}
ln, err := net.Listen("tcp", "127.0.0.1:1080")
if err != nil {
panic(err)
}
log.Println("listen 127.0.0.1:1080")
for {
conn, err := ln.Accept()
if err != nil {
if ne, ok := err.(net.Error); ok && ne.Temporary() {
log.Printf("accept temp err: %v", ne)
continue
}
log.Panicln("accept", err)
os.Exit(1)
}
go func() {
for {
if handle(conn, globals.Best) {
break
}
if err := betterio.CheckReaderOpen(conn); err != nil {
break
}
log.Println(conn.RemoteAddr().String(), "retry")
time.Sleep(time.Millisecond * 100)
}
}()
}
}
func handle(conn net.Conn, upstream *types.Upstream) bool {
defer conn.Close()
var upstreamConn net.Conn
dialer := net.Dialer{
Timeout: 500 * time.Millisecond,
}
upstreamConn, err := dialer.Dial("tcp", upstream.Address)
if err != nil {
log.Println(conn.RemoteAddr().String(), "dial err to", upstream.Address, err)
return false
}
defer upstreamConn.Close()
// log.Println(conn.RemoteAddr().String(), "copying")
betterio.CopyBidirUntilCloseAndReturnBytesWritten(conn, upstreamConn)
return true
}