In my ASP.net MVC4 project users can send messages to admin. Admin can check that messages in any time in a special section of his page without any problem. I am little bit confused with next thing: For my thinking it will be better to make a notification in webpage of admin which will mean that he have a new messages from users instead of сhecking that section everytime. What the best way to realise it (to show a notification)?!
I would implement Signal-R for that purpose. When the server finds a new message waiting for the admin, it would send a notification to your app, and you then just need to show a toast with a link to your existing page for instance...
You can find more info about this technology here: http://www.asp.net/signalr
Example of toast library: https://codeseven.github.io/toastr/
Related
I have a situation recently identified by the users of my app which i did more than 2 years ago.
To cut the matter short there is a URL link sent to the customer on click of which some things executes based upon the encrypted key that is passed along with the URL query string. Earlier it was working fine because the user had to click on the link in the SMS to execute that. But now a days the SMS clients for example in iPhone or something similar they pick up the URL and try to show the preview (similar to what what's app skype etc do). But the problem is that the link is only one time and on a second click the link is already expired because it is assumed that its already hit.
So, in this situation the user is never able to go to the next step since the link is already consumed in the form of the message preview.
I have a work around for the same for example to show a fake page or something similar but i do not want to use that since i understand that this think i quite common and you genius folks out there have something to share.
Please share how to may be identify the client which are just looking for og tags or how to identify these kinds of clients so that the actual request is not processed unless is done manually by the user by clicking on the link.
As far as I know there is no consistent user agent clients have to use in the open graph spec.
Therefore blocking based on that is an ever moving target, each app could use a different agent if they so wish.
The way I have always countered to this is that a get action should never be a destructive action.
The get should always be safe to run over and over.
If you need a destructive action, the page should include some form of user input/button/link which would trigger a post to the server.
If required you can then also add an added level of security in the link by asking the user to confirm something from the data, e.g. their phone number.
This means if a link was to get into the wrong hands (remember, SMS are not encrypted so can be snooped) then without this information the user is required to enter they will be unable to execute the destructive action of the link.
I am trying to make a program that will listen to if I recieve a E-mail I got a smtp server and so on.
I want to make a database object with Title and text from the Mail and I might want to evolve it into also saving the attacted file to the database so I can use it it my asp.net program.
I think I need a windows Service that will be listening to the email if it gets a email it will add it to datbase and wait again but I am not sure how to do that. if its possible to program that into my asp.net project then it would be a good thing also
Here is a small design on how I was thinking about it
if you know anything about it feel free to come up with any kind of solutions for me.
Read incoming emails with POP3 or Exchange. I've made something similar before, which was a system where users could add links (a type of linking-scam actually) to different websites. So there was a bunch of people in Asia that had a full-time job searching for relevant sites and emailing a list of these URL's to a specific email-address. A service I had running would check the POP3 inbox every 5 minutes or so and then post these links to the website.
You should make an application that gets run at specific intervals rather than a service, which is much simpler. If you're using Azure as a host you can use the scheduled task service there to make a POST call to a page on your site so you don't have to run the code in a different eco-system. Well, I guess you can do that anyway with scheduled tasks in windows.
Here's a POP3 client for .NET
You could make a C# service that checks the pop3 server in a configured interval, and store them in the DB. There's something like this here:
http://aspsnippets.com/Articles/Fetch-and-Read-emails-from-POP3-mail-server-using-C-and-VB.Net---Part-I.aspx
But as a regular application, you just have to make it to run as service (I think you have a project template for that in VS). You have some info here:
http://msdn.microsoft.com/en-us/library/zt39148a(v=vs.110).aspx
Okay I figured out a good solution for this problem friends :)
What I did was I downloaded the EAGetMail and implamentet it. it basicly works for you in a time interval it will check your mail and make a txt file with all the mails so it wont read it again. it also got a aplication field so everytime it runs it will run the selected application.
So I made a console application that runs trough my folder where it will save all my email's as .eml file. It will check for a sub folder called read if its not there then create it and then check the root folder for .eml files read them and save information from it to the database and then move the file to read.
We did not want to use pop3 cuz we wanted the mails to stay intact så we dont lose any information. so we ran for the IMAP4.
and in the asp.net I just run a query that checks the database and use the files.
I have a functionality where I need to remind the customers about their appointments before the time interval set while creating the appointment.
Example:
A customer is logged into the system today at 4:00PM.
If a customer has an appointment set today at 5:00PM , and the reminder minutes as 10.
This invokes a popup with beepsound that has to appear today at 4:50PM(i.e 10 minutes before the actual appointment start time).
I have all appointments with start time, end time , (along with the dates) stored in backend table for number of customers.
Please guide me to achive the following in realtime :
(1) to invoke this popup at 4.50PM
(2) play the soundfile stored in the database
From my search,there is a way to do this using signalr concept in mvc. I went through the sample for chat application in this lnk.
http://www.asp.net/signalr/overview/getting-started/tutorial-getting-started-with-signalr
This invokes the hub when a event occurs. but in my application it has to work as a reminder to show the popup if the start time matched the current time. how to get this in real time. Any idea can help me.
This could be a good situation to use WebSockets. (Take a look at Socket.IO, and it's .NET version SocketIO4Net)
The idea would be to have a business logic server side to manage what customer has an appointment to be reminded. Then it uses the WebSocket to send the reminder signal. If the customer is logged in, the js client side would catch the signal and you decide how you want to show it.
To play the sound stored in the database, you could do an action server side that returns the sound file or something, and then use an HTML 5 tag to play the sound.
Hope this helps.
Everything can be done but as ChristianDev says SignalR does not work like this out of the box... I think you can do this with SignalR anyway but you have a few challenges...
You have to maintain state on the server for the clients appointment
This state have to be persistent between connection, when a client navigates between pages
When an event fires you have to send the message to the correct client
If that client is between pages (offline) at the moment that message have to be stored until the client gets back online and then be sent to him/her.
EDIT: It seemed like a fun thing to write so a wrote a simple notification application. You can probably port it to SignalR pretty easy. Realtime Notification Sample
You could change the approach, and use a windows service, emailing/sms'ing the user to remind them of the appointment, this means that the user doesn't need to be logged into the web application to receive a reminder.
If you wanted to use technology such as SignalR, you would need to keep a record of connected users (and their username) and then when an appointment is due, you would need to trigger an event to send to the user in question, based on the unique connectionId.
SignalR, out of the box, doesn't work like this - but, take a look at my question here for some help : Update UI with SignalR and Knockout when manually updating DB
Edit: To add to this, if you're looking for a very nice notification plugin, then take a look at John Papa's ToastR, it's a small JS/Css plugin which notifies via a 'timed, outlook style notification'.
I am creating a windows 8 app to send mail from the entered fields. There are two approaches that i have tested and tried. But each one has its own limitation. My requirement is simple to send mail via outlook desktop app for the user. The content body of the mail is well formatted hence I used HTML to create it(Other ways if any let me know), there is an image attachment also of the InkManager used to take user sign.
Approach 1: Use share charm. All things work well but some times the app stops sharing then I need to restart or logoff from that account and then again login. And the clients wants to open his/ her outlook
Approach 2: Use mailto and open using Launcher.LaunchUriAsync it gives me an option to choose outlook but I can't set the HTML content formatted and unable to put the InkManager used to take user sign as an image
How can I solve this issue?
If you need to send the mail from the user's account these are the only two ways. Alternatives are using an external web service as Filip suggested or sending it directly from the app using a mail API such as Mail for Windows Store.
I have another remark regarding the first approach, though. In my experience the sharing typically stops working until the next logon when an app does something wrong handling the DataRequested event - this breaks the share charm for all the apps. If it happens to you during development or testing your own app, make sure you handle any exceptions that might happen in the event handler and also check that you are adding and removing the event handler properly. Also avoid stopping the app within this event handler when debugging. This should prevent the issue from occuring.
The best way right now is to write/connect to a web service that sends the mail. I think there might be existing ones out there.
I would like to send a message to an Active Directory user so when he/she loggs in next time they see the message though a popup window. Is it possible to do it in any way beside using the usual netsend?
This is usually a mess when trying to push out a message to a user. If you want a message to pop up, I would suggest that you create a small application with a pull mechanism. When the user logs in, the application should run to determine if they have a message waiting (messages could be in a central database or even file location). If they do, the application could pop up the message. In this way, the application would also bypass most of your firewall/network segment issues. You would only need to open communication to a central location for the data rather than diagnosing network issues for every client.
Not only would this method allow you to do exactly what you are asking for, it would allow you to expand your application to do even more. For example, you could require the user to acknowledge the message in a more formal way than just hitting OK (maybe make them check a box first saying "I read and understand the message"). You could also capture the time when the user saw the message (they might not log in for hours after you send the message). It could also be used when the user is currently logged in and you want to send them a message (the app could poll the server).
While there are downsides to this method (creating an app, installing it everywhere, managing it, etc.) I think the benefits would outweigh the downsides if you really need to have a notification system like you are specifying.
On Windows 2003 you've got an old fashion way of doing that.
In the scriptPath attribut of the AD user nod, you put the name of a script or exe file for example username.cmd.
On your DC, you've got a folder C:\WINDOWS\SYSVOL\sysvol\DOMAIN.NAME\SCRIPTS shared with the name NETLOGON. you just create the file username.cmd in this folder. the program username.cmd is going to be played on every logon of the user. In this file you can put a popup message.
It's still working on Windows Server 2008 R2.