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Server.go
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Server.go
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package server
import (
"fmt"
"log"
"net"
"net/http"
"os"
"runtime"
"time"
"server/settings"
"server/torr"
"server/version"
"server/web/mods"
"server/web/templates"
"github.com/anacrolix/sync"
"github.com/labstack/echo"
"github.com/labstack/echo/middleware"
)
var (
server *echo.Echo
bts *torr.BTServer
mutex sync.Mutex
fnMutex sync.Mutex
err error
)
func Start(port string) {
runtime.GOMAXPROCS(runtime.NumCPU())
fmt.Println("Start web server, version:", version.Version)
bts = torr.NewBTS()
err := bts.Connect()
if err != nil {
fmt.Println("Error start torrent client:", err)
return
}
mutex.Lock()
server = echo.New()
server.HideBanner = true
server.HidePort = true
server.HTTPErrorHandler = HTTPErrorHandler
//server.Use(middleware.Logger())
server.Use(middleware.Recover())
templates.InitTemplate(server)
initTorrent(server)
initSettings(server)
initInfo(server)
initAbout(server)
mods.InitMods(server)
server.GET("/", mainPage)
server.GET("/echo", echoPage)
server.POST("/shutdown", shutdownPage)
server.GET("/js/api.js", templates.ApiJS)
go func() {
defer mutex.Unlock()
server.Listener, err = net.Listen("tcp", "0.0.0.0:"+port)
if err == nil {
err = server.Start("0.0.0.0:" + port)
}
server = nil
if err != nil {
fmt.Println("Error start web server:", err)
}
}()
}
func Stop() {
fnMutex.Lock()
defer fnMutex.Unlock()
if server != nil {
fmt.Println("Stop web server")
server.Close()
server = nil
if bts != nil {
bts.Disconnect()
bts = nil
}
}
}
func Wait() error {
mutex.Lock()
mutex.Unlock()
return err
}
func mainPage(c echo.Context) error {
return c.Render(http.StatusOK, "mainPage", nil)
}
func echoPage(c echo.Context) error {
return c.String(http.StatusOK, version.Version)
}
func shutdownPage(c echo.Context) error {
go func() {
Stop()
settings.CloseDB()
time.Sleep(time.Second * 2)
os.Exit(5)
}()
return c.NoContent(http.StatusOK)
}
func HTTPErrorHandler(err error, c echo.Context) {
var (
code = http.StatusInternalServerError
msg interface{}
)
if he, ok := err.(*echo.HTTPError); ok {
code = he.Code
msg = he.Message
if he.Internal != nil {
msg = fmt.Sprintf("%v, %v", err, he.Internal)
}
} else {
msg = http.StatusText(code)
}
if _, ok := msg.(string); ok {
msg = echo.Map{"message": msg}
}
if code != 404 && c.Request().URL.Path != "/torrent/stat" {
log.Println("Web server error:", err, c.Request().URL)
}
// Send response
if !c.Response().Committed {
if c.Request().Method == echo.HEAD { // Issue #608
err = c.NoContent(code)
} else {
err = c.JSON(code, msg)
}
if err != nil {
c.Logger().Error(err)
}
}
}