136 lines
3 KiB
Go
136 lines
3 KiB
Go
// Copyright 2016 Jimmy Zelinskie
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package http
|
|
|
|
type Config struct {
|
|
Addr string
|
|
ReadTimeout time.Duration
|
|
WriteTimeout time.Duration
|
|
RequestTimeout time.Duration
|
|
AllowIPSpoofing bool
|
|
RealIPHeader string
|
|
}
|
|
|
|
type Tracker struct {
|
|
grace *graceful.Server
|
|
|
|
bittorrent.TrackerFuncs
|
|
Config
|
|
}
|
|
|
|
func NewTracker(funcs bittorrent.TrackerFuncs, cfg Config) {
|
|
return &Server{
|
|
TrackerFuncs: funcs,
|
|
Config: cfg,
|
|
}
|
|
}
|
|
|
|
func (t *Tracker) Stop() {
|
|
t.grace.Stop(t.grace.Timeout)
|
|
<-t.grace.StopChan()
|
|
}
|
|
|
|
func (t *Tracker) handler() {
|
|
router := httprouter.New()
|
|
router.GET("/announce", t.announceRoute)
|
|
router.GET("/scrape", t.scrapeRoute)
|
|
return server
|
|
}
|
|
|
|
func (t *Tracker) ListenAndServe() error {
|
|
t.grace = &graceful.Server{
|
|
Server: &http.Server{
|
|
Addr: t.Addr,
|
|
Handler: t.handler(),
|
|
ReadTimeout: t.ReadTimeout,
|
|
WriteTimeout: t.WriteTimeout,
|
|
},
|
|
Timeout: t.RequestTimeout,
|
|
NoSignalHandling: true,
|
|
ConnState: func(conn net.Conn, state http.ConnState) {
|
|
switch state {
|
|
case http.StateNew:
|
|
//stats.RecordEvent(stats.AcceptedConnection)
|
|
|
|
case http.StateClosed:
|
|
//stats.RecordEvent(stats.ClosedConnection)
|
|
|
|
case http.StateHijacked:
|
|
panic("http: connection impossibly hijacked")
|
|
|
|
// Ignore the following cases.
|
|
case http.StateActive, http.StateIdle:
|
|
|
|
default:
|
|
panic("http: connection transitioned to unknown state")
|
|
}
|
|
},
|
|
}
|
|
t.grace.SetKeepAlivesEnabled(false)
|
|
|
|
if err := t.grace.ListenAndServe(); err != nil {
|
|
if opErr, ok := err.(*net.OpError); !ok || (ok && opErr.Op != "accept") {
|
|
panic("http: failed to gracefully run HTTP server: " + err.Error())
|
|
}
|
|
}
|
|
}
|
|
|
|
func (t *Tracker) announceRoute(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
|
|
req, err := ParseAnnounce(r, t.RealIPHeader, t.AllowIPSpoofing)
|
|
if err != nil {
|
|
WriteError(w, err)
|
|
return
|
|
}
|
|
|
|
resp, err := t.HandleAnnounce(req)
|
|
if err != nil {
|
|
WriteError(w, err)
|
|
return
|
|
}
|
|
|
|
err = WriteAnnounceResponse(w, resp)
|
|
if err != nil {
|
|
WriteError(w, err)
|
|
return
|
|
}
|
|
|
|
if t.AfterAnnounce != nil {
|
|
t.AfterAnnounce(req, resp)
|
|
}
|
|
}
|
|
|
|
func (t *Tracker) scrapeRoute(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
|
|
req, err := ParseScrape(r)
|
|
if err != nil {
|
|
WriteError(w, err)
|
|
return
|
|
}
|
|
|
|
resp, err := t.HandleScrape(req)
|
|
if err != nil {
|
|
WriteError(w, err)
|
|
return
|
|
}
|
|
|
|
err = WriteScrapeResponse(w, resp)
|
|
if err != nil {
|
|
WriteError(w, err)
|
|
return
|
|
}
|
|
|
|
if t.AfterScrape != nil {
|
|
t.AfterScrape(req, resp)
|
|
}
|
|
}
|