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New emails are broadcast through both the API v1 event stream and API v2 websocket.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| package api | ||
|
|
||
| import ( | ||
| gohttp "net/http" | ||
|
|
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| "github.com/gorilla/pat" | ||
| "github.com/mailhog/MailHog-Server/config" | ||
| ) | ||
|
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| func CreateAPI(conf *config.Config, r gohttp.Handler) { | ||
| apiv1 := createAPIv1(conf, r.(*pat.Router)) | ||
| apiv2 := createAPIv2(conf, r.(*pat.Router)) | ||
|
|
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| go func() { | ||
| for { | ||
| select { | ||
| case msg := <-conf.MessageChan: | ||
| apiv1.messageChan <- msg | ||
| apiv2.messageChan <- msg | ||
| } | ||
| } | ||
| }() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| package websockets | ||
|
|
||
| import ( | ||
| "time" | ||
|
|
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| "github.com/gorilla/websocket" | ||
| ) | ||
|
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| const ( | ||
| // Time allowed to write a message to the peer. | ||
| writeWait = 10 * time.Second | ||
| // Time allowed to read the next pong message from the peer. | ||
| pongWait = 60 * time.Second | ||
| // Send pings to peer with this period. Must be less than pongWait. | ||
| pingPeriod = (pongWait * 9) / 10 | ||
| // Maximum message size allowed from peer. | ||
| maxMessageSize = 256 | ||
| ) | ||
|
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| type connection struct { | ||
| hub *Hub | ||
| ws *websocket.Conn | ||
| send chan interface{} | ||
| } | ||
|
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| func (c *connection) readLoop() { | ||
| defer func() { | ||
| c.hub.unregisterChan <- c | ||
| c.ws.Close() | ||
| }() | ||
| c.ws.SetReadLimit(256) | ||
| c.ws.SetReadDeadline(time.Now().Add(pongWait)) | ||
| c.ws.SetPongHandler(func(string) error { c.ws.SetReadDeadline(time.Now().Add(pongWait)); return nil }) | ||
| for { | ||
| if _, _, err := c.ws.NextReader(); err != nil { | ||
| return | ||
| } | ||
| } | ||
| } | ||
|
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||
| func (c *connection) writeLoop() { | ||
| ticker := time.NewTicker(pingPeriod) | ||
| defer func() { | ||
| ticker.Stop() | ||
| c.ws.Close() | ||
| }() | ||
| for { | ||
| select { | ||
| case message, ok := <-c.send: | ||
| if !ok { | ||
| c.writeControl(websocket.CloseMessage) | ||
| return | ||
| } | ||
| if err := c.writeJSON(message); err != nil { | ||
| return | ||
| } | ||
| case <-ticker.C: | ||
| if err := c.writeControl(websocket.PingMessage); err != nil { | ||
| return | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| func (c *connection) writeJSON(message interface{}) error { | ||
| c.ws.SetWriteDeadline(time.Now().Add(writeWait)) | ||
| return c.ws.WriteJSON(message) | ||
| } | ||
|
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| func (c *connection) writeControl(messageType int) error { | ||
| c.ws.SetWriteDeadline(time.Now().Add(writeWait)) | ||
| return c.ws.WriteMessage(messageType, []byte{}) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| package websockets | ||
|
|
||
| import ( | ||
| "net/http" | ||
|
|
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| "github.com/gorilla/websocket" | ||
| "github.com/ian-kent/go-log/log" | ||
| ) | ||
|
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| type Hub struct { | ||
| upgrader websocket.Upgrader | ||
| connections map[*connection]bool | ||
| messages chan interface{} | ||
| registerChan chan *connection | ||
| unregisterChan chan *connection | ||
| } | ||
|
|
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| func NewHub() *Hub { | ||
| hub := &Hub{ | ||
| upgrader: websocket.Upgrader{ | ||
| ReadBufferSize: 256, | ||
| WriteBufferSize: 4096, | ||
| }, | ||
| connections: make(map[*connection]bool), | ||
| messages: make(chan interface{}), | ||
| registerChan: make(chan *connection), | ||
| unregisterChan: make(chan *connection), | ||
| } | ||
| go hub.run() | ||
| return hub | ||
| } | ||
|
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| func (h *Hub) run() { | ||
| for { | ||
| select { | ||
| case c := <-h.registerChan: | ||
| h.connections[c] = true | ||
| case c := <-h.unregisterChan: | ||
| h.unregister(c) | ||
| case m := <-h.messages: | ||
| for c := range h.connections { | ||
| select { | ||
| case c.send <- m: | ||
| default: | ||
| h.unregister(c) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| func (h *Hub) unregister(c *connection) { | ||
| if _, ok := h.connections[c]; ok { | ||
| close(c.send) | ||
| delete(h.connections, c) | ||
| } | ||
| } | ||
|
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| func (h *Hub) Serve(w http.ResponseWriter, r *http.Request) { | ||
| ws, err := h.upgrader.Upgrade(w, r, nil) | ||
| if err != nil { | ||
| log.Println(err) | ||
| return | ||
| } | ||
| c := &connection{hub: h, ws: ws, send: make(chan interface{}, 256)} | ||
| h.registerChan <- c | ||
| go c.writeLoop() | ||
| go c.readLoop() | ||
| } | ||
|
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| func (h *Hub) Broadcast(data interface{}) { | ||
| h.messages <- data | ||
| } |