Got it. Now for some testing!
Thanks again.
Ray
On Tuesday, February 23, 2016 at 11:01:23 PM UTC-5, Christopher Mina wrote:
>
> You're welcome.
>
> As a hint, you can look at this for managing the disconnects:
>
> ws.on('close', function close() {
> numConnections--;
> ... alert all remaining sockets ...
>
> });
>
>
> Best of luck.
> Chris
>
> On Tuesday, February 23, 2016 at 7:30:27 PM UTC-7, Ray Jender wrote:
>>
>> Well, with your help, I now have it half working! It is updating each
>> webpage for new connections. Now I have to figure out how to decrement
>> when a user leaves.
>> I will work on that and let you know.
>>
>> I really appreciate your help with this. You helped a blind man see!
>>
>> Ray
>>
>>
>> On Monday, February 22, 2016 at 7:51:23 PM UTC-5, Christopher Mina wrote:
>>>
>>> Ok, I finally actually checked out your library to help you a litle bit
>>> more.
>>>
>>> It looks like your ws library on the server actually maintains a list of
>>> open / connected clients, so this is actually pretty trivial.
>>>
>>> You'll be able to do something like this:
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> *wss.on('connection', function(ws) { numConnections++; var message
>>> = JSON.stringify({ numConnections: numConnections, event:
>>> "numConnectionsChanged" }); wss.clients.forEach(function(client) {
>>> client.send(message); }); })*
>>>
>>> Now in your client side, you would do something like this:
>>>
>>> ws = new WebSocket(...);
>>> ws.onmessage =function(event) {
>>> var data = JSON.parse(event.data);
>>> if (data.event == "numConnectionsChanged") {
>>> var numberOfConnections = data.numConnections;
>>> document.getElementById("my-counter").innerHTML =
>>> numberOfConnections;
>>> }
>>> }
>>>
>>>
>>> In this solution, you don't really care about the sessions or anything
>>> else. You just care about the total number of connected clients, and you
>>> just want to inform them.
>>>
>>> Remember, you'll want to handle the disconnect in a similar way.
>>>
>>> -Chris
>>>
>>>
>>>
>>> On Monday, February 22, 2016 at 5:31:36 PM UTC-7, Ray Jender wrote:
>>>>
>>>> On the client side, I am expecting json? And I do not have a
>>>> clientSocket.on?
>>>> What I have is:
>>>>
>>>> ws.onmessage = function(message) {
>>>> var parsedMessage = JSON.parse(message.data);
>>>> console.info('Received message: ' + message.data);
>>>>
>>>> switch (parsedMessage.id) {
>>>>
>>>> There a few different "case" situations like 'Stop', 'Default', etc.
>>>>
>>>> Ray
>>>>
>>>> On Monday, February 22, 2016 at 6:34:14 PM UTC-5, Christopher Mina
>>>> wrote:
>>>>>
>>>>> That's correct, just a normal array.
>>>>>
>>>>> I was just showing an example of how to use the array to store a
>>>>> reference to all open web sockets. Then when you need to increment,
>>>>> you'd
>>>>> just iterate over the array.
>>>>>
>>>>> e.g.
>>>>>
>>>>> var myCount = 10;
>>>>> sockets.forEach(function(ws) {
>>>>> ws.emit("countupdated", myCount);
>>>>> });
>>>>>
>>>>> And your client side code would listen for the "countupdated" event,
>>>>> something like:
>>>>>
>>>>> clientSocket.on("countupdated", function(data) {
>>>>> console.log("The new count is " + data);
>>>>> });
>>>>>
>>>>>
>>>>> I'm still not sure if any of this is answering your question, though...
>>>>> -Chris
>>>>>
>>>>> On Monday, February 22, 2016 at 4:22:52 PM UTC-7, Sávio Lucena wrote:
>>>>>>
>>>>>> Hey Ray,
>>>>>>
>>>>>> I haven’t been following this thread but from what I can infer of
>>>>>> Chris’s answer ’sockets’ is a javascript Array to store and keep
>>>>>> reference
>>>>>> of each ws instance created, ‘push’ is just adding an instance to it :).
>>>>>>
>>>>>>
>>>>>> On Feb 22, 2016, at 2:00 PM, Ray Jender <[email protected]> wrote:
>>>>>>
>>>>>> I am definitely using a particular library, ws.
>>>>>> Is the sockets.push(ws) a valid command for that? I could not find
>>>>>> it anywhere?
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Ray
>>>>>>
>>>>>> On Sunday, February 21, 2016 at 9:56:05 PM UTC-5, Christopher Mina
>>>>>> wrote:
>>>>>>
>>>>>>> Hi Ray.
>>>>>>>
>>>>>>> You'll want to keep a reference to each web socket created (in an
>>>>>>> array or object hash) and a property on your server or in a database to
>>>>>>> track the number of active sessions. When a new connection is made (or
>>>>>>> closed), you will increment / decrement the count and then send a
>>>>>>> message
>>>>>>> event through each socket to the client. The client will be listening
>>>>>>> for
>>>>>>> that event (eg "count_changed") and when the event comes through, it
>>>>>>> will
>>>>>>> read the new count off the data payload of the event and render it to
>>>>>>> the
>>>>>>> screen.
>>>>>>>
>>>>>>> I'm not sure if I'm answering your question or not. Maybe you are
>>>>>>> asking specifically about the particular library you're using? It seems
>>>>>>> to
>>>>>>> me, the confusion may just be in how you maintain a reference to each
>>>>>>> open
>>>>>>> web socket.
>>>>>>>
>>>>>>> For instance :
>>>>>>>
>>>>>>> var sockets = [];
>>>>>>> *wss.on('connection', function(ws) {*
>>>>>>>
>>>>>>> * sockets.push(ws);*}
>>>>>>>
>>>>>>> You can now reference any socket created via this array. You'll want
>>>>>>> to ensure you are removing disconnected sockets as well, by listening
>>>>>>> for a
>>>>>>> disconnect event.
>>>>>>>
>>>>>>> Hopefully this helps.
>>>>>>> Chris
>>>>>>>
>>>>>>>
>>>>>>> On Sunday, February 21, 2016, Ray [email protected]> wrote:
>>>>>>>
>>>>>>>> Thanks for the reply Chris.
>>>>>>>>
>>>>>>>> One of the confusions I am having is trying to impliment something
>>>>>>>> written for socket.io to use in ws.
>>>>>>>>
>>>>>>>> But that said, I do have code to get the authkey, but I am confused
>>>>>>>> how the authkey can be used to access the webpage?
>>>>>>>>
>>>>>>>> So for code, I have:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> *function nextUniqueId() { idCounter++; return
>>>>>>>> idCounter.toString();}wss.on('connection', function(ws) { var
>>>>>>>> sessionId = nextUniqueId(); console.log('Connection received
>>>>>>>> with
>>>>>>>> sessionId ' + sessionId); var id =
>>>>>>>> ws.upgradeReq.headers['sec-websocket-key']; console.log('New
>>>>>>>> Connection id : : ', id);*So sessionid just counts the number of
>>>>>>>> users, which is what I want to display on all user pages.
>>>>>>>>
>>>>>>>> Right now, each user webpage is only showing what the total user
>>>>>>>> count is when the user created the ws.
>>>>>>>> (1,2,3,4, etc). So the first user is showing 1, the second user is
>>>>>>>> showing 2, and so on,
>>>>>>>>
>>>>>>>> So I am confused on how the var id above can be used to send data
>>>>>>>> to a particular webpage (websocket)?
>>>>>>>>
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>>
>>>>>>>> Ray
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Saturday, February 20, 2016 at 11:48:55 PM UTC-5, Christopher
>>>>>>>> Mina wrote:
>>>>>>>>>
>>>>>>>>> Sorry about that half finished post, my last post was sent
>>>>>>>>> prematurely...
>>>>>>>>>
>>>>>>>>> What I was getting at is that I now have access to the authkey
>>>>>>>>> during the setup phase. I can use this auth key to query the
>>>>>>>>> database for
>>>>>>>>> information about that user and store it. Now I have a way to
>>>>>>>>> directly
>>>>>>>>> associated the incoming websocket with a specific user.
>>>>>>>>>
>>>>>>>>> I'll now store the actual websocket instances in one or more hash
>>>>>>>>> maps, and when I need to, for instance, send a single user some
>>>>>>>>> information, i can query that websocket via the socketUserId hash
>>>>>>>>> map. Or
>>>>>>>>> if I want to send everyone a message, I'll loop through a list where
>>>>>>>>> I keep
>>>>>>>>> a reference to all sockets, and send each one the message
>>>>>>>>> individually.
>>>>>>>>> This is just one way of doing it. There are other more appropriate
>>>>>>>>> pub/sub
>>>>>>>>> mechanisms as well you could investigate.
>>>>>>>>>
>>>>>>>>> Hopefully that helps a little bit.
>>>>>>>>> -Chris
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Saturday, February 20, 2016 at 7:26:54 PM UTC-7, Ray Jender
>>>>>>>>> wrote:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Please bear with me as I am new to websockets.
>>>>>>>>>>
>>>>>>>>>> So, my problem is keeping track of websocket instances.
>>>>>>>>>> I am trying to modify some existing open source javascript code.
>>>>>>>>>>
>>>>>>>>>> I have server.js, index.js and index.html files. As with any
>>>>>>>>>> website,
>>>>>>>>>> it could have many users browsing the page. There is only a single
>>>>>>>>>> webpage.
>>>>>>>>>>
>>>>>>>>>> The basic operation is: index.html --> index.js --> server.js -->
>>>>>>>>>> index.js
>>>>>>>>>>
>>>>>>>>>> What I am having a hard time wrapping my head around is
>>>>>>>>>> associating the
>>>>>>>>>> websocket with the browser. What I want to do is be able to
>>>>>>>>>> update
>>>>>>>>>> each webpage with the number of users. I have googled tons of
>>>>>>>>>> sites but
>>>>>>>>>> I am still very confused on how this should work.
>>>>>>>>>>
>>>>>>>>>> I've seen a thing like ws.broadcast, but I am having a hard time
>>>>>>>>>> trying to
>>>>>>>>>> implement that. It seems that the way the opensource code I am
>>>>>>>>>> using initializes
>>>>>>>>>> websockets way different than the examples I am seeing.
>>>>>>>>>>
>>>>>>>>>> I am using node v0.10.42, npm 1.4.29, express 4.12.4, minimist
>>>>>>>>>> 1.1.1, ws 0.7.2, bower 1.4.1
>>>>>>>>>>
>>>>>>>>>> I need a tutor to help me through this! Care to volunteer? I
>>>>>>>>>> would be so appreciative!!!
>>>>>>>>>>
>>>>>>>>>> Thanks,
>>>>>>>>>>
>>>>>>>>>> Ray
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
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>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Christopher Mina
>>>>>>>
>>>>>>> Live Healthy. Work Hard. Be Kind. Gain Success.
>>>>>>>
>>>>>>>
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