what is the best way to write and debug Server Side Action Script on Flash Media Server?
I use Flash Builder for syntax highlighting, but that's all.
I want to debug, make breakpoints and step-trough server application code.
Any ideas?
EDIT1: I know about administration console for viewing trace messages, but that is not real debugging for me.
Although I don't know of an easy way to step through code, there are some cool things you can do.
Since objects in SSAS are dynamic, you can write a custom logging method that dumps variables recursively. I've found this very useful. If you print the method name and dump arguments with each call, this is as good as stepping through code.
Since SSAS is interpreted, you can write a custom admin console that processes eval statements. This is useful when doing live code, or debugging code in a certain state.
Here is a link to the Adobe developers guide:
http://www.adobe.com/livedocs/flashmediaserver/3.0/hpdocs/help.html?content=Book_Part_34_ss_asd_1.html
This includes the developers guide, language reference, some tutorials, etc... Everything you need to get started.
A hello world in server side ActionScript 3 looks like this:
application.onConnect = function( client ) {
client.serverHelloMsg = function( helloStr ) {
return "Hello, " + helloStr + "!";
}
application.acceptConnection( client );
}
AMS (/FMS):
Client.prototype.foo = function (){
return this;
}
Client:
netConn.call('foo', new Responder(_debug, _debug));
And breakpoint over:
function _debug(... rest):void{
}
Is as good as it gets:
we use the client to debug the server
we have to restart the server every time the main.asc file changes
we have to use rsync to upload the file to the remove machine if you can't get a local dev environment (which i couldn't - after a day of futile attempts and this post being 4 years old)
Seriously, it's load of fun, try it!
Related
I am trying to implement a WebRTC application using the xirsys API and simpleWebRTC. I am trying to connect using the secure method. So inside the connect.js file, I have this:
var xirsysConnect = {
secureTokenRetrieval : true,
server : '../getToken.php/',
data : {
domain : 'MY_DOMAIN_HERE',
application : 'default',
room : 'default',
secure : 1
}
};
When I open the page in a browser, I get this error in the console:
Failed to construct 'WebSocket': The URL 'undefined/v2/LONG_STRING_HERE' is invalid
I can't seem to find any help in the docs. I have also tried looking in the source code, but can't seem to make any headway. Any help will be greatly appreciated.
For having spent the last couple of days trying to make this work, I concluded that the Xirsys demo using simpleWebRTC isn't ready for prime time. Comments in the source code often don't reflect what's in the code itself. Additionally, there is, indeed, no proper online documentation about it.
I had hoped for Xirsys to provide something more professional. I'm looking forward to clarifications and improvements on their side.
I am working on a .NET MVC3 C# Application. This application is hosted on our own Server.
Now I want to Send Scheduled Email in my application like daily(at a specific time),Weekly, monthly and so on...
Currently I am using MVCMailer to send Emails in my application.
I tried Fluent Scheduler to send scheduled Emails, but it doesn't works with MVCMailer. It Works fine if I send mails without MVCMailer and for other scheduling jobs.
It gives me a ERROR NULLReferenceException and says HTTPContext cannot be null.
What can I do to solve this problem.
Also suggest me which will be the best way to send E-mails in my applicaton.
Windows Service (Having own server)
Scheduler (Fluent Scheduler)
SQL Scheduled jobs
I am attaching ERROR snapshot:
It could be that MVCMailer depends on an HttpContext, which will not exist on your scheduled threadlocal's.
You could consider scrapping MvcMailer and implementing your own templating solution. Something like RazorEngine (https://github.com/Antaris/RazorEngine), which gives you the full power of Razor without having to run ontop on an Http stack. You could still source your templates from disk so that your designers could modify it.
Then you could mail the results using the standard classes available from .net.
For e.g.:
string template = File.ReadAllText(fileLocation);//"Hello #Model.Name, welcome to RazorEngine!";
string emailBody = Razor.Parse(template, new { Name = "World" });
SmtpClient client = new SmtpClient();
client.Host = "mail.yourserver.com";
MailMessage mm = new MailMessage();
mm.Sender = new MailAddress("foo#bar.com", "Foo Bar");
mm.From = new MailAddress("foo#bar.com", "Foo Bar");
mm.To.Add = new MailAddress("foo#bar.com", "Foo Bar");
mm.Subject = "Test";
mm.Body = emailBody;
mm.IsBodyHtml = true;
client.Send(mm);
Obviously you could clean this all up. But it wouldn't take to much effort to use the above code and create some reusable classes. :)
Since you already have the FluentScheduler code set up, you may as well stick with that I guess. A windows service does also sound appealing, however I think that it's your call to make. If it's a simple mail service you are after I can't think of any reason not to do it via FluentScheduler.
I have created a full example of this available here: https://bitbucket.org/acleancoder/razorengine-email-example/src/dfee804d526ef3cd17fb448970fbbe33f4e4bb79?at=default
You can download the website to run locally here: https://bitbucket.org/acleancoder/razorengine-email-example/downloads
Just make sure to change the Default.aspx.cs file to have your correct mail server details.
Hope this helps.
Since MVC Mailer works best in the HTTP stack (i.e. from controllers), I've found that a very reliable way to accomplish this is by using Windows Task Schedule from a server somewhere. You could even spin up a micro instance on Amazon Web Server.
Use "curl" to call the URL of your controller that does the work and sends the emails.
Just setup a Scheduled Task (or Cron if you want to use *IX) to call "c:\path_to_curl\curl.exe http://yourserver.com/your_controller/your_action".
You could even spin up a *IX server on AWS to make it even cheaper.
How can you detect the url that I am browsing in chrome/safari/firefox via cocoa (desktop app)?
As a side but related note, are there any security restrictions when developing a desktop app that the user will be alerted and asked if they want to allow? e.g. if the app accesses their contact information etc.
Looking for a cocoa based solution, not javascript.
I would do this as an extension, and because you would like to target Chrome, Safari, and Firefox, I'd use a cross-browser extension framework like Crossrider.
So go to crossrider.com, set up an account and create a new extension. Then open the background.js file and paste in code like this:
appAPI.ready(function($) {
appAPI.message.addListener({channel: "notifyPageUrl"}, function(msg) {
//Do something, like send an xhr post somewhere
// notifying you of the pageUrl that the user visited.
// The url is contained within msg.pageUrl
});
var opts = { listen: true};
// Note: When defining the callback function, the first parameter is an object that
// contains the page URL, and the second parameter contains the data passed
// to the context of the callback function.
appAPI.webRequest.onBeforeNavigate.addListener(function(details, opaqueData) {
// Where:
// * details.pageUrl is the URL of the tab requesting the page
// * opaqueData is the data passed to the context of the callback function
if(opaqueData.listen){
appAPI.message.toBackground({
msg: details.pageUrl
}, {channel: "notifyPageUrl"});
}
}, opts ); // opts is the opaque parameter that is passed to the callback function
});
Then install the extension! In the example above, nothing is being done with the detected pageUrl that the user is visiting, but you can do whatever you like here - you could send a message to the user, you could restrict access utilizing the cancel or redirectTo return parameters, you could log it locally utilizing the crossrider appAPI.db API or you could send the notification elsewhere, cross-domain, to wherever you like utilizing an XHR request from the background directly.
Hope that helps!
And to answer the question on security issues desktop-side, just note that desktop applications will have the permissions of the user under which they run. So if you are thinking of providing a desktop app that your users will run locally, say something that will detect urls they access by tapping into the network stream using something like winpcap on windows or libpcap on *nix varieties, then just be aware of that - and also that libpcap and friends would have to have access to a network card that can be placed in promiscuous mode in the first place, by the user in question.
the pcap / installed desktop app solutions are pretty invasive - most folks don't want you listening in on literally everything and may actually violate some security policies depending on where your users work - their network administrators may not appreciate you "sniffing", whether that is the actual purpose or not. Security guys can get real spooky so-to-speak on these kinds of topics.
The extension via Crossrider is probably the easiest and least intrusive way of accomplishing your goal if I understand the goal correctly.
One last note, you can get the current tab urls for all tabs using Crossrider's tabs API:
// retrieves the array of tabs
appAPI.tabs.getAllTabs(function(allTabInfo) {
// Display the array
for (var i=0; i<allTabInfo.length; i++) {
console.log(
'tabId: ' + allTabInfo[i].tabId +
' tabUrl: ' + allTabInfo[i].tabUrl
);
}
});
For the tab API, refer to:
http://docs.crossrider.com/#!/api/appAPI.tabs
For the background navigation API:
http://docs.crossrider.com/#!/api/appAPI.webRequest.onBeforeNavigate
And for the messaging:
http://docs.crossrider.com/#!/api/appAPI.message
And for the appAPI.db stuff:
http://docs.crossrider.com/#!/api/appAPI.db
Have you looked into the Scripting Bridge? You could have an app that launches, say, an Applescript which verifies if any of the well known browser is opened and ask them which documents (URL) they are viewing.
Note: It doesn't necessarily need to be an applescript; you can access the Scripting Bridge through cocoa.
It would, however, require the browser to support it. I know Safari supports it but ignore if the others do.
Just as a quick note:
There are ways to do it via AppleScript, and you can easily wrap this code into NSAppleScript calls.
Here's gist with AppleScript commands for Safari and Chrome. Firefox seems to not support AE.
Well obviously this is what I had come across on google.
chrome.tabs.
getSelected
(null,
function
(tab) {
alert
(tab.url);
}) ;
in pure javascript we can use
alert(document.URL);
alert(window.location.href)
function to get current url
I'm looking for a way through AJAX (not via a JS framework!) to real time monitor a file for changes. If changes where made to that file, I need it to give an alert message. I'm a total AJAX noob, so please be gentle. ;-)
Edit: let me explain the purpose a bit more in detail. I'm using a chat script I've written in PHP for a webhop, and what I want is from an admin module monitor the chat requests. The chats are stored in text files, and if someone starts a chat session a new file is created. If that's the case, in the admin module I want to see that in real time.
Makes sense?
To monitor a file for changes with AJAX you could do something like this.
var previous = "";
setInterval(function() {
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function() {
if (ajax.readyState == 4) {
if (ajax.responseText != previous) {
alert("file changed!");
previous = ajax.responseText;
}
}
};
ajax.open("POST", "foo.txt", true); //Use POST to avoid caching
ajax.send();
}, 1000);
I just tested it, and it works pretty well, but I still maintain that AJAX is not the way to go here. Comparing file contents will be slow for big files. Also, you mentionned no framework, but you should use one for AJAX, just to handle the cross-browser inconsistencies.
AJAX is just a javascript, so from its definition you do not have any tool to get access to file unless other service calls an js/AJAX to notify about the change.
I've done that from scratch recently.
I don't know how much of a noob you are with PHP (it's the only server script language I know), but I'll try to be as brief as possible, feel free to ask any doubt.
I'm using long polling, which consists in this (
Create a PHP script that checks the content of the file periodically and only responds when it sees any change (it could include a description of the change in the response)
Create your XHR object
Include your notification code as a callback function (it can use the description)
Make the request
The PHP script will start checking the file, but won't reply until there is a change
When it responds, the callback will be called and your notification code will launch
If you don't care about the content of the file, only that it has been changed, you can check the last-modified time instead of the content in the PHP script.
EDIT: from some comment I see there's something to monitor file changes called FAM, that seems to be the way to go for the PHP script
The Setting:
The program in question tries to post form data via an AJAX call to a target procedure contained in the same package as the caller. This is done for a site that uses a secure connection (HTTPS). The technology used here is PLSQL and the DOJO JavaScript library. The development tool is basically a text editor.
Code Snippet:
> function testPost() {
>> dojo.xhrPost( {
url: ''dr_tm_w_0120.test_post'',
form: ''orgForm'',
load: testPostXHRCallback,
error: testPostXHRError
});
}
> function testPostXHRCallback(data,ioArgs) {
>> alert(''post callback'');
try{
dojo.byId("messageDiv").innerHTML = data;
}
catch(ex){
if(ex.name == "TypeError")
{
alert("A type error occurred.");
}
}
return data;
}
>
function testPostXHRError(data, ioArgs) {
>> alert(data);
alert(''Error when retrieving data from the server!'');
return data;
}
The Problem:
When using IE6 (which the entire user-base uses), the response sent back from the server is a 404 error.
Observations:
The program works fine in Firefox.
The calling procedure cannot target any procedures within the same package.
The calling procedure can target outside sites (both http, https).
The other AJAX calls in the package that are not posts of form data work fine.
I've searched the internets and consulted with senior-skilled team members and haven't discovered anything that satisfactorily addresses the issue.
*Tried Q&A over at Dojo support forums.
The Questions:
What troubleshooting techniques do you recommend?
What troubleshooting tools do you recommend for HTTPS analyzing?
Any hypotheses on what the issue might be?
Any ideas for workarounds that aren't total (bad) hacks?
Ed. The Solution
lomaxx, thx for the fiddler tip. you have no idea how awesome it was to get that and use it as a debugging tool. after starting it up this is what i found and how i fixed it (at least in the short term):
> ef Fri, 8 Aug 2008 14:01:26 GMT dr_tm_w_0120.test_post: SIGNATURE (parameter names) MISMATCH VARIABLES IN FORM NOT IN PROCEDURE: SO1_DISPLAYED_,PO1_DISPLAYED_,RWA2_DISPLAYED_,DD1_DISPLAYED_ NON-DEFAULT VARIABLES IN PROCEDURE NOT IN FORM: 0
After seeing that message from the server, I kicked around Fiddler a bit more to see what else I could learn from it. Found that there's a WebForms tab that shows the values in the web form. Wouldn't you know it, the "xxx_DISPLAYED_" fields above were in it.
I don't really understand yet why these fields exist, because I didn't create them explicitly in the web PLSQL code. But I do understand now that the target procedure has to include them as parameters to work correctly. Again, this is only in the case of IE6 for me, as Firefox worked fine.
Well, that the short term answer and hack to fix it. Hopefully, a little more work in this area will lead to a better understanding of the fundamentals going on here.
First port of call would be to fire up Fiddler and analyze the data going to and from the browser.
Take a look at the headers, the url actually being called and the params (if any) being passed to the AJAX method and see if it all looks good before getting to the server.
If that all looks ok, is there any way you can verify it's actually hitting the server via logging, or tracing in the AJAX method?
ed: another thing I would try is rig up a test page to call the AJAX method on the server using a non-ajax based call and analyze the traffic in fiddler and compare the two.