A server that starts and stops audio recording with websocket messages

mic_websocket.go

package main

import (
	"net/http"
	"fmt"
	"os/exec"
	"time"
	"code.google.com/p/go.net/websocket"
)

// Echo the data received on the WebSocket.
func EchoServer(ws *websocket.Conn) {
	//io.Copy(ws, ws)
	c := make(chan bool)

	for {
		var message string

		websocket.Message.Receive(ws, &message)

		if message == "Stop" {
			c<-true
			fmt.Println(message)	
		}
		if message=="Start"{
			fmt.Println(message)
			go newrecording(c)
		}
		
		websocket.Message.Send(ws, "message")
	}
}


// This example demonstrates a trivial echo server.
func ExampleHandler() {
	http.Handle("/echo", websocket.Handler(EchoServer))
	err := http.ListenAndServe(":12345", nil)
	if err != nil {
		panic("ListenAndServe: " + err.Error())
	}
}


func newrecording(c <-chan bool){
	filename := fmt.Sprintf("recs/%d.wav",time.Now().Unix())

	cmd := exec.Command("arecord","-f","cd","-t","wav",filename)
	cmd.Start()	
	//fmt.Print(cmd.Process.Pid)
	
	select{
	case   <- c:
		cmd.Process.Kill()
		
	}
}


func main(){
	ExampleHandler()
}