func (l *listener) handler(ws *websocket.Conn) {
l.lock.Lock()
if !l.running {
ws.Close()
l.lock.Unlock()
return
}
w := &wsPipe{ws: ws, addr: l.addr, proto: l.proto, open: true}
w.iswss = l.iswss
req := ws.Request()
w.props = make(map[string]interface{})
w.props[mangos.PropLocalAddr] = ws.LocalAddr()
w.props[mangos.PropRemoteAddr], _ = net.ResolveTCPAddr("tcp", req.RemoteAddr)
if l.iswss {
w.props[mangos.PropTlsConnState] = *req.TLS
}
w.wg.Add(1)
l.pending = append(l.pending, w)
l.cv.Broadcast()
l.lock.Unlock()
// We must not return before the socket is closed, because
// our caller will close the websocket on our return.
w.wg.Wait()
}
func serveWebsocket(conn *websocket.Conn) {
var (
// ip addr
lAddr = conn.LocalAddr()
rAddr = conn.RemoteAddr()
// timer
tr = DefaultServer.round.Timer(rand.Int())
)
log.Debug("start websocket serve \"%s\" with \"%s\"", lAddr, rAddr)
DefaultServer.serveWebsocket(conn, tr)
}
func EchoServer(ws *websocket.Conn) {
addr := ws.LocalAddr().String()
pfx := []byte("[" + addr + "] ")
log.Printf("ws connect on %s", addr)
// the following could be done with io.Copy(ws, ws)
// but I want to add some meta data
var msg = make([]byte, 1024)
for {
n, err := ws.Read(msg)
if err != nil && err != io.EOF {
log.Printf("ws error on %s. %s", addr, err)
break
}
_, err = ws.Write(append(pfx, msg[:n]...))
if err != nil && err != io.EOF {
log.Printf("ws error on %s. %s", addr, err)
break
}
}
log.Printf("ws disconnect on %s", addr)
}
func wsHandler(ws *websocket.Conn) {
done := make(chan bool)
raw := make([]byte, 1024)
n, err := ws.Read(raw)
if err != nil {
log(err)
return
}
var address string
err = json.Unmarshal(raw[:n], &address)
if err != nil {
log(err, string(raw[:n]))
}
registerSocket <- socket{ws, address, done, ws.LocalAddr().String()}
go incomingMessageReader(ws)
// when this function finishes the socket will be closed
<-done
ws.Close()
}
func GWMockServer(ws *websocket.Conn) {
d, _ := strconv.Atoi(os.Args[1])
DELAY := time.Duration(d)
logger := new(Logger)
logger.Print("Connection from %s", ws.LocalAddr().String())
elements := make([]string, 0)
counter := 0
var request interface{}
var response *Response
for {
// Receive request
err := websocket.JSON.Receive(ws, &request)
if err != nil {
break // EOF
}
req := request.(map[string]interface{})
logger.SetPrefix("* ")
m, _ := json.Marshal(request)
logger.Print("Received message: %s", m)
// Prepare response
response = nil
logger.SetPrefix("* .. ")
switch req["command"] {
case ADDVERTEX:
// Generate id
id := "v_" + randId()
// Add element to array
elements = append(elements, id)
// Return element ID
response = &Response{
Requestid: req["requestId"].(string),
Success: true,
Body: map[string]string{"id": id},
}
case CHANGEVERTEX:
// In the case of changing element name, check if
// it starts with `v_`.
props := req["properties"].(map[string]interface{})
if props["name"] == nil || strings.HasPrefix(props["name"].(string), "v_") {
response = &Response{
Requestid: req["requestId"].(string),
Success: true,
}
} else {
response = &Response{
Requestid: req["requestId"].(string),
Success: false,
Body: map[string]string{"error": "Bad name!"},
}
}
case ADDEDGE:
// Generate id
id := "e_" + randId()
// Add element to array
elements = append(elements, id)
// Return element ID
response = &Response{
Requestid: req["requestId"].(string),
Success: true,
Body: map[string]string{"id": id},
}
case CHANGEEDGE:
// In the case of changing element name, check if
// it starts with `v_`.
props := req["properties"].(map[string]interface{})
if props["name"] == nil || strings.HasPrefix(props["name"].(string), "e_") {
response = &Response{
Requestid: req["requestId"].(string),
Success: true,
}
} else {
response = &Response{
Requestid: req["requestId"].(string),
Success: false,
Body: map[string]string{"error": "Bad name!"},
}
}
case NEXT:
if counter == len(elements)*3 || counter == -1 {
response = &Response{
Requestid: req["requestId"].(string),
Success: true,
Body: map[string]string{"message": "Finished running"},
}
} else {
element := elements[rand.Intn(len(elements))]
var elementType string
switch element[0:1] {
case "v":
elementType = "vertex"
case "e":
elementType = "edge"
}
response = &Response{
Requestid: req["requestId"].(string),
Success: true,
// Return just a random element
Body: map[string]string{
"next": element,
"type": elementType,
},
}
counter++
}
case START:
if len(elements) == 0 {
response = &Response{
Requestid: req["requestId"].(string),
Success: false,
Body: map[string]string{"error": "Model is empty"},
}
} else {
counter = 0
response = &Response{
Requestid: req["requestId"].(string),
Success: true,
}
}
case STOP:
counter = -1
response = &Response{
Requestid: req["requestId"].(string),
Success: true,
}
default:
logger.Print("Unknown command %s", req["command"])
}
if response != nil {
m, _ := json.Marshal(response)
time.Sleep(DELAY * time.Millisecond)
logger.Print("Sent response: %s", m)
websocket.JSON.Send(ws, response)
response = nil
}
}
logger.Print("Closed connection from %s", ws.LocalAddr().String())
}
// Echo the data received on the WebSocket.
func EchoServer(ws *websocket.Conn) {
totle++
fmt.Println(totle, ws.LocalAddr())
io.Copy(ws, ws)
}
