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