try fixing deadlock

contrib/backends/srndv2/src/srnd/daemon.go

@@ -874,7 +874,7 @@ func (self *NNTPDaemon) poll(worker int) {
 				// send to frontend
 				if self.frontend != nil {
 					if self.frontend.AllowNewsgroup(group) {
-						self.frontend.PostsChan() <- frontendPost{msgid, ref, group}
+						self.frontend.HandleNewPost(frontendPost{msgid, ref, group})
 					}
 				}
 			}

contrib/backends/srndv2/src/srnd/frontend.go

@@ -25,8 +25,8 @@ func (p frontendPost) Newsgroup() string {
 // frontend interface for any type of frontend
 type Frontend interface {
 
-	// channel that is for the frontend to pool for new posts from the nntpd
+	// handle new post from nntpd
-	PostsChan() chan frontendPost
+	HandleNewPost(p frontendPost)
 
 	// run mainloop
 	Mainloop()
@@ -36,6 +36,7 @@ type Frontend interface {
 
 	// trigger a manual regen of indexes for a root post
 	Regen(msg ArticleEntry)
+
 	// regenerate on mod event
 	RegenOnModEvent(newsgroup, msgid, root string, page int)
 }

contrib/backends/srndv2/src/srnd/frontend_http.go

@@ -175,7 +175,6 @@ type httpFrontend struct {
 	httpmux  *mux.Router
 	daemon   *NNTPDaemon
 	cache    CacheInterface
-	recvpostchan chan frontendPost
 	bindaddr string
 	name     string
 
@@ -222,10 +221,6 @@ func (self httpFrontend) AllowNewsgroup(group string) bool {
 	return newsgroupValidFormat(group) || group == "ctl" && !strings.HasSuffix(group, ".")
 }
 
-func (self httpFrontend) PostsChan() chan frontendPost {
-	return self.recvpostchan
-}
-
 func (self *httpFrontend) Regen(msg ArticleEntry) {
 	self.cache.Regen(msg)
 }
@@ -406,12 +401,14 @@ func (self *httpFrontend) poll() {
 			} else {
 				log.Println("failed to register mod message, file was not opened")
 			}
-		case nntp := <-self.recvpostchan:
+		}
-			// get root post and tell frontend to regen that thread
+	}
+}
+func (self *httpFrontend) HandleNewPost(nntp frontendPost) {
 	msgid := nntp.MessageID()
 	group := nntp.Newsgroup()
 	ref := nntp.Reference()
-			self.informLiveUI(msgid, ref, group)
+	go self.informLiveUI(msgid, ref, group)
 	if len(ref) > 0 {
 		msgid = ref
 	}
@@ -431,8 +428,6 @@ func (self *httpFrontend) poll() {
 		self.regenGroupChan <- req
 	}
 }
-	}
-}
 
 // create a new captcha, return as json object
 func (self *httpFrontend) new_captcha_json(wr http.ResponseWriter, r *http.Request) {
@@ -1569,7 +1564,7 @@ func NewHTTPFrontend(daemon *NNTPDaemon, cache CacheInterface, config map[string
 		Path:   front.prefix,
 		MaxAge: 600,
 	}
-	front.recvpostchan = make(chan frontendPost)
+
 	front.regenThreadChan = front.cache.GetThreadChan()
 	front.regenGroupChan = front.cache.GetGroupChan()
 

contrib/backends/srndv2/src/srnd/frontend_multi.go

@@ -7,7 +7,6 @@ package srnd
 
 // muxed frontend for holding many frontends
 type multiFrontend struct {
-	muxedpostchan chan frontendPost
 	frontends []Frontend
 }
 
@@ -25,25 +24,12 @@ func (self multiFrontend) Mainloop() {
 	for idx := range self.frontends {
 		go self.frontends[idx].Mainloop()
 	}
-
-	// poll for incoming
-	chnl := self.PostsChan()
-	for {
-		select {
-		case nntp := <-chnl:
-			for _, frontend := range self.frontends {
-				if frontend.AllowNewsgroup(nntp.Newsgroup()) {
-					ch := frontend.PostsChan()
-					ch <- nntp
-				}
-			}
-			break
-		}
-	}
 }
 
-func (self multiFrontend) PostsChan() chan frontendPost {
+func (self multiFrontend) HandleNewPost(nntp frontendPost) {
-	return self.muxedpostchan
+	for idx := range self.frontends {
+		self.frontends[idx].HandleNewPost(nntp)
+	}
 }
 
 func (self multiFrontend) RegenOnModEvent(newsgroup, msgid, root string, page int) {
@@ -54,7 +40,6 @@ func (self multiFrontend) RegenOnModEvent(newsgroup, msgid, root string, page in
 
 func MuxFrontends(fronts ...Frontend) Frontend {
 	var front multiFrontend
-	front.muxedpostchan = make(chan frontendPost, 64)
 	front.frontends = fronts
 	return front
 }