I want very sample code for make chat (Text only, no streaming ...)
This code is like what I want to looking for in actionscript for clientside and java for serverside:
Server Side
function receiveMsg(data){
toClient("Server says" + data);
}
CLient Side
btn.event(click, function(){
toServer("Hello Server");
}
That's all! thanks in advence
It may be more than what you want, but it is certainly a simple chat app. I wrote a blog post and demo code for a clustered chat app in Red5; feel free to do with it what you like.
http://blog.infrared5.com/2011/07/clustering-with-red5/
Related
I have a java application which sends json data to an API via POST, what i'm trying to do is collect this data from the Next.js application to display and store in a database later. I can't figure out how to fetch this data from the Next app. currently i have the following code in the pages/api/comment and I'm calling the http://localhost:3000/api/comment from the java application
export default function handler(req, res) {
if(req.method === 'POST'){
const comment = req.body.data
const newCom = {
id: Date.now(),
text: comment,
}
comments.push(newCom)
res.status(201).json(newCom)
}
}
Can someone give me some directions please?, Thank you very much in advance.
Since Next js is working in server less architecture, you need to persist/save data some where like DB on the time of posting data, Then only we an retrieve data by get Api
Strange behavior is happening when using signalR with IE 11. Scenario:
We have some dispatcher type functionality where the dispatcher does some actions, and the other user can see updates live (querying). The parameters that are sent come through fine and cause updates on the IE client side without having to open the developer console.
BUT the one method that does not work (performUpdate - to get the query results - this is a server > client call, not client > server > client) - never gets called. IT ONLY GETS CALLED WHEN THE DEVELOPER CONSOLE IS OPEN.
Here's what I've tried:
Why JavaScript only works after opening developer tools in IE once?
SignalR : Under IE9, messages can't be received by client until I hit F12 !!!!
SignalR client doesn't work inside AngularJs controller
Some code snippets
Dispatcher side
On dropdown change, we get the currently selected values and send updates across the wire. (This works fine).
$('#Selector').on('change', function(){
var variable = $('#SomeField').val();
...
liveBatchHub.server.updateParameters(variable, ....);
});
Server Side
When the dispatcher searches, we have some server side code that sends out notifications that a search has been ran, and to tell the client to pull results.
public void Update(string userId, Guid bId)
{
var context = GlobalHost.ConnectionManager.GetHubContext<LiveBatchViewHub>();
context.Clients.User(userId).performUpdate(bId);
}
Client side (viewer of live updates)
This never gets called unless developer tools is open
liveBatchHub.client.performUpdate = function (id) {
//perform update here
update(id);
};
Edit
A little more information which might be useful (I am not sure why it makes a difference) but this ONLY seems to happen when I am doing server > client calls. When the dispatcher is changing the search parameters, the update is client > server > client or dispatcher-client > server > viewer-client, which seems to work. After they click search, a service in the search pipeline calls the performUpdate server side (server > viewer-client). Not sure if this matters?
Edit 2 & Final Solution
Eyes bloodshot, I realize I left out one key part to this question: we are using angular as well on this page. Guess I've been staring at it too long and left this out - sorry. I awarded JDupont the answer because he was on the right track: caching. But not jQuery's ajax caching, angulars $http.
Just so no one else has to spend days / nights banging their heads against the desk, the final solution was to disable caching on ajax calls using angulars $http.
Taken from here:
myModule.config(['$httpProvider', function($httpProvider) {
//initialize get if not there
if (!$httpProvider.defaults.headers.get) {
$httpProvider.defaults.headers.get = {};
}
// Answer edited to include suggestions from comments
// because previous version of code introduced browser-related errors
//disable IE ajax request caching
$httpProvider.defaults.headers.get['If-Modified-Since'] = 'Mon, 26 Jul 1997 05:00:00 GMT';
// extra
$httpProvider.defaults.headers.get['Cache-Control'] = 'no-cache';
$httpProvider.defaults.headers.get['Pragma'] = 'no-cache';
}]);
I have experienced similar behavior in IE in the past. I may know of a solution to your problem.
IE caches some ajax requests by default. You may want to try turning this off globally. Check this out: How to prevent IE from caching Ajax with jQuery
Basically you would globally switch this off like this:
$.ajaxSetup({ cache: false });
or for a specific ajax request like this:
$.ajax({
cache: false,
//other options...
});
I had a similar issue with my GET requests caching. My update function would only fire off once unless dev tools was open. When it was open, no caching would occur.
If your code works properly with other browsers, So the problem can be from the SignalR's used transport method. They can be WebSocket, Server Sent Events, Forever Frame and Long Polling based on browser support.
The Forever Frame is for Internet Explorer only. You can see the Introduction to SignalR to know which transport method will be used in various cases (Note that you can't use any of them on each browser, for example, IE doesn't support Server Sent Events).
You can understand the transport method being used Inside a Hub just by looking at the request's QueryString which can be useful for logging:
Context.QueryString["transport"];
I think the issue comes from using Forever Frame by IE likely, since sometimes it causes SignalR to crash on Ajax calls. You can try to remove Forever Frame support in SignalR and force to use the remaining supported methods by the browser with the following code in client side:
$.connection.hub.start({ transport: ['webSockets', 'serverSentEvents', 'longPolling'] });
I showed some realities about SignalR and gave you some logging/trace tools to solve your problem. For more help, put additional details :)
Update:
Since your problem seems to be very strange and I've not enough vision around your code, So I propose you some instructions based on my experience wish to be useful:
Setup Browser Link in IDE suitable
checkout the Network tab request/response data during its process
Make sure you haven't used reserved names in your server/client side
(perhaps by renaming methods and variables)
Also I think that you need to use liveBatchHub.server.update(variable, ....); instead of liveBatchHub.server.updateParameters(variable, ....); in Dispatcher side to make server call since you should use server method name after server.
We want to call an restful post API from iPhone. Can you give me a sample code snippet for this?
My API URL is http://machinename/asyh/restful.php/1/VideoStreaming
Post parameter name is file_chunk.
The API will append the data received in file_chunk parameter to file in the server.
I have called the same API from C#. But I don't know how to invoke it from iOS. Please help me.
The server code is given below (it's in PHP). The restful webservice is is written in PHP using synfony framework.
$fileChunk = $request->getPostParameter('filechunk');
$vodFolder = 'D:\\web\\entertainment\\';
$vodFile = $vodFolder . "testFile.mov";
$fh = fopen($vodFile, 'a');
fwrite($fh, $fileChunk);
fclose($fh);
maybe http://restkit.org
nice tutorial http://mobile.tutsplus.com/tutorials/iphone/restkit_ios-sdk/
i've got an android app and a really simple web service that make an insert in a DB with 3 values.
the titanium code is most like the example given on the docs
var xhr = Ti.Network.createHTTPClient();
xhr.onload = function(e) {};
xhr.open('POST','http://www.micheleantonaci.altervista.org/test/foobar.php');
xhr.send({
"latitude":00100,
"longitude":10000,
"type":'From Nexus'
});
and the web service is just
<?php
$con=mysql_connect('http://www.micheleantonaci.altervista.org/','***','***');
mysql_select_db('***',$con);
if(isset($_REQUEST['submit']))
{
$latitude=$_POST['latitude'];
$longitude=$_POST['longitude'];
$kind=$_POST['type'];
$sql="insert into foobar (latitude,longitude,type) values ('$latitude','$longitude','$kind')";
$res=mysql_query($sql) or die (mysql_error());
}
?>
now, when i try the webservice giving the values with the browser it works good, but with the app I get no results at all, any suggestions? tha app doesn't crash or log any error
You must use PHP function json_decode to get values.
Try adding the header like this:
xhr.setRequestHeader("Content-Type", "application/json");
You should also do a var_dump($_POST) in your PHP to see what's in it, not sure you'll get your stuff in separated variables...
When I see a problem like this, I setup 'Charles' or a similar proxy and have the device send it's request through the proxy. Then you can see if the device is send what is expected.
You could also try
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
The code is right, the problem was on the framework itself, at that day the post method wasn't working.
Nowadays it has been fixed.
Hope you are having a good time.
I am creating a website where when users Tweet a wordpress blog entry then they get points on the websites.
So basically, if a user Tweets that entry on his Twitter then we would give him some points to use on the website (not money). Although this thing is plausible with Facebook but not with Twitter in my knowledge.
I am willing to try to both ways by Twitter Tweet Button or TweetMeme Retweet Facility. However, I could not find a facility for a callback at neither of these.
I am implementing a similar functionality in Facebook and I can see the light at the end of the tunnel with using FBML JS SDK. HOwever, if something similar can be achieved with Twitter then it would be awesome.
Would love to hear more from you guys,
Kind Regards,
Khuram
They've fixed this with the intents function:
https://dev.twitter.com/pages/intents-events
twttr.events.bind('tweet', function(event) {
// Do something there
});
or for clicking
twttr.events.bind('click', function(event) {
var click_type = event.region;
});
using Twitters #anywhere api, you can set an onTweet function that does something when someone tweets.
here is a 6-step tutorial, see number 4
A default tweetBox can be called after the element with the comments class with the following snippet.
twttr.anywhere(function(twitter) {
twitter(".comments").tweetBox();
});
So if you want a custom label, content, and a callback when the tweet has been sent, use this code.
twitter(".comments").tweetBox({
label: 'What do you think about this article?',
defaultContent: '#nettuts ',
onTweet: function(plain, html){
// Actions when tweet is sent
}
});
opening tweet intent pop from JS code will send a callback. You need to put your tweet URL in herf of anchor tag
HTML:
<a target="_blank" href="https://twitter.com/intent/tweet?text=itismytext&url=http://google.com"> twitter share</a>
JavaScript:
$(document).ready(function(){
twttr.events.bind('tweet', function(event) {
console.log(event);
// OR
alert(JSON.stringify(event));
});
});