I am in the progress build a client ASP.NET application (C#) that can display messages from a server application as soon as it receives them.
At the moment I am using an Asynchronous Client Socket but the OnRead event does not fired as soon as the server sent the strings
How to do client asynchronous socket in ASP,NET?
ASP.NET Ajax Library provides some client-side events. For instance:
Sys.Application.add_load(
function(args) {
// handle the end of any asynchronous post-back. Every-time there's
// a server round-trip, this method will be called.
}
);
During the asynchronous post-back I want to retrieve information to the client. This information must be available in some event like the discribed above.
Does the UpdatePanel or the ScriptManager have any server-side way to retrieve data back to client during an asynchronous post-back?
I want to create a UserControl (my first...) acting like this:
- After the Page is shown, the Control should display a default image... an animated gif or something...
- now the control generates a thumbnail of a previously associated file
- thumbnail is ready -> control should display the new thumbnail....
How do I start? Working with a Webservice?
[code]....
I've developed a chat application using WCF/ASp.net. I want to asynchronously transfer a file from one chat user to another chat user. What is best approach for this?here are my insights/doubts
View 2 RepliesI have written a program that interprets bar charts on the web and converts them into textual summaries. It is blind and visually impaired get more information during their web surfing. Anyways, right now all of the processing is handled on the user's machine and it is a very resource intensive program. So, I wanted to make it so the main computation was done by a server so that the user could simply click on a graph and get the summary instead of waiting while the computation was being done. Does anyone have a clue how to tackle this problem? If you need more information let me know.
View 8 RepliesIs this Possible that write a Socket by C# in ASP.net ?
for Example Can i write a Code Like this Perl Code in C# and asp.net ? :
> use HTTP::Request::Common qw(POST);
> use LWP::UserAgent; $ua = new
> LWP::UserAgent(agent => 'Mozilla/5.0(Windows; U; Windows NT 5.1; en-US; rv:1.8.0.5)Gecko/20060719 Firefox/1.5.0.5');
> $ua -> timeout(20);
> my $req = POST 'http://Example.com/',
> [ login_username => 'mehdi' , login22 => '654321' , go => 'submit'];
> my $content = $ua->request($req);
Iam trying to make a socket connection and am facing with the following error.
Socket tempSocket =new
Socket(ipe.AddressFamily,
SocketType.Stream,
ProtocolType.Tcp);
The tempSocket is connected to the particular IP and tempSocket.Connected is giving me value as True. But the property MultiCastLoopBack property is giving me the following error with error code 10042.
"An unknown, invalid, or unsupported option or level was specified in a getsockopt or setsockopt call."
So is there any problem with the IP or Tcp is not supported with Stream as SocketType?
I've a project in C which acts as a server and accepts socket communication. The server project has multiple C files is an exe which accepts messages from the client program and responds accordingly. I've to write a Client program in C# which should open a socket communication and send a series of messages depending on the result of previous message sent.
Is it possible to send a message in such a way that it will call a function in one of the C file in the server project?
Am using socket connection to send and receive values. The following code is used to receive response.
[Code]....
In the above code, am facing a prob in skt.Available. If i dont give the thread.sleep, it is not repeating the while loop and it exits after onetime. And if i dont give skt.Available line, sometimes it throws socket Exception. I do not want to use thread.sleep. Does anyone knows why this is happening and how can i resolve this?
I am working on live trading system, in this web system i have to show live data so i am calling my store procedure for bind my data. I have few questions -
Is it possible to use MSMQ in web ?
Is it possible to use socket programming in web ?
Its because i am calling SP in every 5 seconds and its very lengthy. I want to use socket programming or MSMQ in LIVE trading system because if any thing update or modify in tables then only web page get notification from MSMQ or Socket and i will bind my page then only. And if possible then its secure and perfect for web live environment ?
I wrote a small socket client application talking to my asp.net server application.
On the asp.net side, I created a IHttpHandler. I want to send data back and forth on one HTTP request.
I tried the following code which run an infinite loop inside function ProcessRequest(). The client side opens a socket connection and send HTTP POST request.
I am not sure how asp.net work. In HTTP POST I have to specify Content-Length, I tried a small value, like 20, then asp.net handler can only get 20 bytes in the inputstream. I tried to use 4096000 bytes(close to the maximum IIS allowed), then the inputstream cannot get anything, it seems IIS is waiting for all data(4096000) to come from client side before it gives the handler a chance to read from the socket.
public class DeviceDataHandler : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
try
{
Stream inputstream = context.Request.InputStream;
Stream outputstream = context.Response.OutputStream;
/loop forever until exception is thrown
while (true)
{
ProcessData(inputstream, outputstream);
}
}
catch (Exception ex)
{
ZenLog.logError("DeviceConnector exception: " + ex.Message);
}
}
public bool IsReusable
{
get
{
return true;
}
}
}
I want to create custom packet header and append it to data.and send the data to remote machine using socket programming C#.
View 1 RepliesI'm calling Another url from my web aspx page. I'm writing
[code]....
But I'm getting error
A socket operation was attempted to an unreachable host 208.101.14.59:80
I tried the same url by pasting it on address bar and works fine. When I call my vendor they r saying that there is no any problem from their side. Someone has suggested me that there may be some settings in web.config.
I want to send socket information to aspx page.eg. I have 80 clients connected to server. Server is doing some calculation based on the user input and if one of the condition is true, it will send the signal to all the connected clients. I'm the client. The other vendor is the server. Currently, my application is windows based, I want to change it to web based. So, When the server send the signal , I want to receive this signal from the web page.
View 1 RepliesWe have a component that needs to sit in asp.net that creates a listening socket on a well known port.The reason we have the socket is the asp.net need component needs to received events from external services and other technologies weren't quick or flexible enough.We start the socket listening in application_start,and close the socket in application_end. The issue is if we are receiving http requests to the web site, and modify the web.config, the application_start event is called before the application_end is called,so we cannot open the socket (we get an error about duplicate socket being open). We dont have a reference to the original socket in the application_start after the web.config change, so we cannot shut it down from there.
View 3 RepliesI write code for sending mail. Its working fine in local at Execution time. After i Hosted into server. it shows the Error.
A socket operation was attempted to an unreachable host [IP]:587
code:
Dim mail As New MailMessage
mail.To.Add("xxx@abc.com")
mail.From = New MailAddress("yyy@gmail.com")
mail.Subject = "Subject"
mail.IsBodyHtml = True
mail.Priority = MailPriority.High
[Code] ....
I am using one DLL file of Active Socket Object 3.5 and it has one function writeAsUnicode which take String as parameter. But I need to pass binary value. In ASP, it can be done but in asp.net it becomes problem. So is there any other way to solve it.
View 1 Repliesexplain me Secure Socket Layers (SSL) and how it provide the functionality of encryption and decryption of data ?
View 1 Replies[Code]....
View 3 Replies 1)How to make Default.aspx page a Secure socket layer page?
2)How much code does this take?
3 Is it easy ? i have no idea how this works
I'm looking for an email client web application source code in C#. May you show me some good source code?
View 4 RepliesI want to get "PrintScreen" of Client PC when he access a particular Web Page.
I tried GOOGLEing this IDEA! but was unable to get much,
Infact what i got know on stackoverflow itself is Javascript PrintScreen
JavaScript cannot be used for such functionality.
So, I would like to know can it be done in Ajax,ASP.NET with C#/VB or in PHP because at the end i want to save this image/s continously to database either SQL Server or MySQL or Oracle.
Is this feasible by ActiveX Objects?
To my knowledge, it will be difficult to go ahead with javascript.Yet i plan to use more of client resourses than server resources while executing this functionality.
I have designed web application..where i need to show ip address of logged client..i m using like this
Your IP address is <%= Request.ServerVariables("REMOTE_ADDR") %>
but it showing error like
Non-invocable member 'System.Web.HttpRequest.ServerVariables' cannot be used like a method.
i try to use using System.Net in my name spaces but ..showing the same error...
What need to show the ip address of client on my webstie....
I am using c# and ASP.NET 2.0.
How to invoke exe, which is available in the client machine?
In this asp.net web application, users can upload files to the server through a web interface. All the uploaded files are save in a server side folder. If I want to create a new win form desktop client (actually, its a WPF application) which can be used to upload files to that same server side folder as web interface does, how can I share that server side folder with that win form client?
View 2 Replies