package main import ( "fmt" "html" "io" "strings" "time" "github.com/gin-gonic/gin" ) func rateLimit(c *gin.Context) { ip := c.ClientIP() value := ips.Add(ip, 1) if int(value)%50 == 0 { fmt.Printf("ip: %s, count: %d\n", ip, int(value)) } if value >= 200 { if int(value)%200 == 0 { fmt.Println("ip blocked") } c.AbortWithStatus(503) } } func index(c *gin.Context) { c.Redirect(301, "/room/hn") } func roomGET(c *gin.Context) { roomid := c.ParamValue("roomid") nick := c.FormValue("nick") if len(nick) < 2 { nick = "" } if len(nick) > 13 { nick = nick[0:12] + "..." } c.HTML(200, "room_login.templ.html", gin.H{ "roomid": roomid, "nick": nick, "timestamp": time.Now().Unix(), }) } func roomPOST(c *gin.Context) { roomid := c.ParamValue("roomid") nick := c.FormValue("nick") message := c.PostFormValue("message") message = strings.TrimSpace(message) validMessage := len(message) > 1 && len(message) < 200 validNick := len(nick) > 1 && len(nick) < 14 if !validMessage || !validNick { c.JSON(400, gin.H{ "status": "failed", "error": "the message or nickname is too long", }) return } post := gin.H{ "nick": html.EscapeString(nick), "message": html.EscapeString(message), } messages.Add("inbound", 1) room(roomid).Submit(post) c.JSON(200, post) } func streamRoom(c *gin.Context) { roomid := c.ParamValue("roomid") listener := openListener(roomid) ticker := time.NewTicker(1 * time.Second) users.Add("connected", 1) defer func() { closeListener(roomid, listener) ticker.Stop() users.Add("disconnected", 1) }() c.Stream(func(w io.Writer) bool { select { case msg := <-listener: messages.Add("outbound", 1) c.SSEvent("message", msg) case <-ticker.C: c.SSEvent("stats", Stats()) } return true }) }