How can I emit a message via socket inside express router

Question

I am trying to emit a message via socket.io . I want to do it when a express router is called .

var express         =   require("express");
var app             =   express();
var http            =   require('http').Server(app);
var io              =   require('socket.io')(http);
var bodyParser      =   require("body-parser");
var router          =   express.Router();

router.route("/test").post(function(req,res){
    console.log(req.body)
    response = {"error" : false,"message" : "api worked"};
    /*I want to emit a message via socket here */
});


app.use('/',router);
app.listen(3010);
console.log("Listening to PORT 3010");

How can I do , I have seen a lot of example of using socket . But I couldn't find a way to do what I want . I have also checked the following question . But I couldn't accomplish it

How to use socket.io in express routes?

Emit a message to who? To what user? To all connected users? Or to the one that made the current request? — jfriend00, May 10 '16 at 06:37
Technically what I want to do is , I want to create an api as an example "example.com/test" . When user will call the api , I want to send a push notification to my android app . So in my case I want to send message to all user . — Mithun Sarker Shuvro, May 10 '16 at 06:43
`io.emit("someMsg", someData)` will send to all connected users. Your clients will, of course, need to connect on socket.io in order to receive the message. — jfriend00, May 10 '16 at 06:46
Are you sending to all the connected channels at same time or each channel individually? I am not sure about that part but `io.emit(, )` will do your job. — Sri Harsha Kappala, May 10 '16 at 07:01
@SriHarshaKappala - socket.io does not have channels. It has rooms and namespaces, but your recommendation is not how you send to either of those. `io.emit("someMsg", someData)` sends a message to each client that is connected to the default or root namespace. — jfriend00, May 10 '16 at 07:17
#offtop @jfriend00 are you socket.io team member? recently notice you answer a lot socket questions — Medet Tleukabiluly, May 10 '16 at 07:18
@MedetTleukabiluly - Not a team member, I just answer a lot of node.js questions of all types. — jfriend00, May 10 '16 at 07:21
#offtop @jfriend00 which chat rooms you visit most? I'm kinda chatty — Medet Tleukabiluly, May 10 '16 at 07:58
@shuvro what does mean __I couldn't accomplish it__ it's pretty simple, what's the problem — Medet Tleukabiluly, May 10 '16 at 07:59
@jfriend00 it worked , thanks ! , would you please post your comment as answer ? — Mithun Sarker Shuvro, May 11 '16 at 11:34

score 2 · Accepted Answer · answered May 11 '16 at 15:08

2

Posting my comment as an answer since it worked for you.

io.emit("someMsg", someData);

will send to all connected users. Your clients will, of course, need to be connected with socket.io in order to receive the message.

answered May 11 '16 at 15:08

jfriend00

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How can I emit a message via socket inside express router

1 Answers1