#IM JS SDK

IMService Methods

• constructor

  • Initializes the client

• observer

  • handle messages that received from server

• accessToken

  • property must be set before start

• start

  • Start im service

• stop

  • Stop im service

• sendPeerMessage

  • Send a message to peer
  • Parameters
    • msg (Object): message property(sender, receiver, content, msgLocalID)

• sendGroupMessage

  • Send a message to peer
  • Parameters
    • msg (Object): message property(sender, receiver, content, msgLocalID)

IMService Observer

• onConnectState

  • callback when im service connection state changed
  • Parameters
    • state:im service's connect state

• handlePeerMessage

  • callback when im service received a peer message
  • Parameters
    • msg (Object): message property(sender, receiver, content, timestamp)

• handleMessageACK

  • callback when im service received an ack of message
  • Parameters
    • msg (Object): message property(sender, receiver, content, timestamp)

• handleMessageFailure

  • callback when im service can't send out the message
  • Parameters
    • msg (Object): message property(sender, receiver, content, timestamp)

• handleGroupMessage

  • callback when im service received a peer message
  • Parameters
    • msg (Object): message property(sender, receiver, content, timestamp)

• handleGroupMessageACK

  • callback when im service received an ack of message
  • Parameters
    • msg (Object): message property(sender, receiver, content, timestamp)

• handleGroupMessageFailure

  • callback when im service can't send out the message
  • Parameters
    • msg (Object): message property(sender, receiver, content, timestamp)

##example

<script src="/engine.io.js"></script>
<script src="/json2.js"></script>
<script src="/im.js"></script>
<script>
  var observer = {
      handlePeerMessage: function (msg) {
          console.log("msg sender:", msg.sender, " receiver:", msg.receiver, " content:", msg.content, " timestamp:", msg.timestamp)
      },
      handleMessageACK: function(msgLocalID, receiver) {
          console.log("message ack local id:", msgLocalID, " receiver:", receiver)
      },
      handleMessageFailure: function(msgLocalID, receiver) {
          console.log("message fail local id:", msgLocalID, " receiver:", receiver)
      },
      onConnectState: function(state) {
          if (state == IMService.STATE_CONNECTED) {
             console.log("im connected");
          } else if (state == IMService.STATE_CONNECTING) {
             console.log("im connecting");
          } else if (state == IMService.STATE_CONNECTFAIL) {
             console.log("im connect fail");
          } else if (state == IMService.STATE_UNCONNECTED) {
             console.log("im unconnected");
          }
      },
      onReset: function() {
          console.log("reset");
      }
  }
  
  var im = new IMService(observer);
  im.accessToken = "????";
  im.start()

  var msg = {sender:100, receiver:200, content:"11", msgLocalID:1000}

  //connectState == STATE_CONNECTING
  var r = im.sendPeerMessage(msg);
  //r == false
  console.log("send message result:", r);

  function send() {
      var msg = {sender:100, receiver:100, content:"11", msgLocalID:1000}
      if (im.connectState == IMService.STATE_CONNECTED) {
          im.sendPeerMessage(msg);
      }
  }

  setTimeout(send, 2000)
</script>