forked from noahhl/go-batsd
/
proxy.go
66 lines (54 loc) · 1.07 KB
/
proxy.go
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package main
import (
"fmt"
"github.com/noahhl/go-batsd/gobatsd"
"net"
"os"
"runtime/pprof"
)
const bufferLen = 100000
const readLen = 256
func main() {
prof, err := os.Create("/tmp/proxy.prof")
if err != nil {
panic(err)
}
defer prof.Close()
pprof.StartCPUProfile(prof)
defer pprof.StopCPUProfile()
gobatsd.LoadConfig()
fmt.Printf("Starting on port %v\n", gobatsd.Config.Port)
server, err := net.ListenPacket("udp", ":"+gobatsd.Config.Port)
defer server.Close()
if err != nil {
panic(err)
}
destinationAddr, err := net.ResolveUDPAddr("udp", ":8225")
if err != nil {
panic(err)
}
client, err := net.DialUDP("udp", nil, destinationAddr)
if err != nil {
panic(err)
}
//c := TCPRelay(client)
buffer := make([]byte, readLen)
for {
n, _, err := server.ReadFrom(buffer)
if err != nil {
continue
}
client.Write(buffer[0:n])
// c <- buffer[0:n]
}
}
func TCPRelay(client net.Conn) chan []byte {
c := make(chan []byte, bufferLen)
go func(client net.Conn, c chan []byte) {
for {
data := <-c
client.Write(data)
}
}(client, c)
return c
}