package main

import (
	"fmt"
	"net"
	"os"
	"time"
	"git.xdrm.io/gws/http/upgrade/request"
)

func main() {

	/* (1) Create listening socket
	---------------------------------------------------------*/
	/* (1) Create socket */
	lsock, err := net.Listen("tcp", ":4444")
	if err != nil {
		panic(err)
	}

	/* (2) Accept clients */
	for {

		sock, err := lsock.Accept()
		if err != nil {
			os.Stderr.WriteString(fmt.Sprintf("Connection error: %s\n", err))
			return
		}

		fmt.Printf("+ new client\n")

		go manageClient(sock)

	}

}

func manageClient(sock net.Conn) {

	startTime := time.Now().UnixNano()

	defer sock.Close()

	for {

		/* (1) Parse request */
		req, errRq := request.Parse(sock)
		if errRq != nil { fmt.Printf("Request parsing error: %s\n", errRq) }
		fmt.Printf("%v\n", req)

		/* (2) Build response */
		res := req.BuildResponse()

		/* (3) Write into socket */
		written, err := res.Send(sock)
		if err != nil {
			fmt.Printf("WRITE ERROR: %s\n", err);
			return
		}

		fmt.Printf("Written %d bytes\n", written)

		break;

	}

	fmt.Printf("Elapsed: %1.1f us\n", float32(time.Now().UnixNano()-startTime)/1e3)
}