Send And Receive Information From A Client Via Telnet Applciation
Apr 1, 2011
An currently writing a vb.net application to send and receive information from a client via telnet. Am using System.net.Sockets to do this. I can send data great and get data back is ok. So the Problem is in the command window after I telnet in to the server application, when i press the delete key the cursor moves back a character and doesn't delete the character, just over writes it and when I read the bytes in I get the deleted character and the ascii value for the delete key and then the replacement character. I have seen another telnet application that shows the deletion of characters in the Command window.
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Oct 15, 2011
Below is my code, but when i send the message thru client socket i receive Specified argument was out of the range of valid values. Parameter name: size
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim serverStream As NetworkStream = clientSocket.GetStream()
Dim outStream As Byte() = _
System.Text.Encoding.ASCII.GetBytes("0800822000000000000004000000000000000920092126012345001")
[CODE]...
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Jan 21, 2009
i am trying to ping some terminals and all i could find for code is this
If My.Computer.Network.Ping(IPaddress, 1000) Then
MsgBox(IPaddress & " pinged successfully.")
Else
MsgBox(IPaddress & " request timed out.")
End If
it keeps comming up request timed out message. and i got this from microsoft. instead of a message box i am going to return the response to a listview control but i have to get a successful message first.
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Jan 21, 2009
Instead of the send message text box and message display text box, I have replaced it with RichTextBox for text formatting (bold/italics/underline/font/color). The problem I am facing is when I format the text and click on send, then the text displayed on the message display box (txtMessageHistory) is unformatted. [Code] Rest of the code of client is related to formatting of the rich text boxes that is not relevant to my problem. I just need to transfer the formatted text from client to server and then back to the client the same way and display the message with text formatting.
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Sep 21, 2011
In our project we've decided to put an exam generator using vb.net and after generate you can send it to client computer/students. *server computer/teacher will the one who will use exam generator and send it to the client computer/student*student will recieve it and then send it back again to the server computer/teacher*teachers will going to generate an exam depends on the type of exam, so i think im going to make it a wizard type environment
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Aug 26, 2010
I have created a Client that can send and receive data via TCP sockets. The objects stored on the serverside are the *exact* same object used for the client. They use the same send and receive protocols.
Now, when i send a string from the server to the client , it does precisely what it should do. However when I send a string to the server.... I do receive the string as an equal length of NULL characters. I run the server and client locally.
Basicly what can influence the behaviour between two completely identical objects performing the exact same task? I wonder if there is some socketflag issue if the TCPlistener.accept function returns a completely different setup then the one I R used to.
(if it is of any interest, the send protocol is asynchronious)
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Jul 18, 2009
I have been developing a calculator for complex math. (Much more complicated than +,-,/,*, and above your usual scientific calculator)Its works quite well .In past programs I have used "private functions". I know that you give them a value and it returns on back. But what if you dont want to recive or send value? My example for this is a function I am attempting to make called "Autopi".The idea of Autopi is that whenever a mathimatical operation is about to be performed textbox(s) are cheked to see if they contain pi. (3.14 or 3.141) If they test positive Autopi will continue pi to however many places have been specifyed in the program. (Currently 300 places just beacuse i can :) Before the Autopi function does this it chekes to see if variable "pi" = 1. If it does it proceeds if it doesent its job is done
How would I create a code that can be called apon to activate but not recive or send any information through the program.And just to clarify what I mean by that is it will read information out of a textbox and write into it. But it wont actualy recive anything or send anything back from where it was called apon.
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Aug 18, 2010
This isn't working for me when I connect to my solaris box
The server is sending back
Imports System.Net
Imports System.Net.Sockets
Imports System.Text
[Code]....
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Dec 14, 2009
i'm trieing to configure a mp3 recorder via telnet and visual basic.how can i send commands to the telnet session via vb?I can make connection with it via telnet and ip adress , but after that i wil send the command for login( login=hdr1) ANd with another butten for example (transport=play)How can i do that?
[Code]...
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May 28, 2009
Are there any good books out there that will show someone how to set up a form using Visual basic that will take information and send it to the server and then send a recipient an Email?
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Sep 16, 2010
Im working on this one application/chatter. What it does, theres a server, and lots of clients. Client sends data to server, server process's it, and the client receives the data (unless its a command, like /process username). Heres my problem. My client has a login feature, like yahoo. Client sends username/password to server. Server goes through list of usernames. Then sends it to client, wether it matches. But my client doesn't receive the data. Can anybody fix this, with my client code provided? Let me know if you need server code, and the extra script files/vb files. [Code]
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Aug 4, 2011
AS in the title i would like my browser to navigate to http:qfi.im Button1.click... etc etc Webbrowser1.navigate("http:www.qfi.im")Then in the link box it should paste link in text1.text
Then it would press submit in bottom right corner Then it would grab the generated link that appears in the right-hand-side click it then begin download I would usually know how to do this but this is javascript enabled and is causing errors inside the form webbrowser
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Jul 25, 2009
Since a few months I want to learn how to receive and send packets. Since WinSock doesn't work I think it'll be quite hard to get an easy way to do it.
I want to be able to send and get packets as a client. (TCP) I know that I need System.Net.Sockets, and that's quite everything...
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Jan 11, 2009
I was going over the Screen Saver Tutorial for VB Express 2005 and i Noticed How the Screen Saver app excepts params at startup... and depending on the startup param it will display the screen saver or the options form... lets say that i want to start up a screen saver from my program, how would i send it to the screen saver to display the options form the param is "/p" or something.
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Mar 11, 2010
I have a program that is meant to send and receive pictures. There are two parts, client and server, the server sending pictures, and client receiving.the server needs to send it across the internet, then the client needs to receive and show the image in a picture box.
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Jun 18, 2009
how i send and recive sms through GSM like mobils using the AT command. vb.net have any api or control for it
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May 9, 2009
how to create a client/server... But I couldn't... I don't want anything fancy. Just want the client to send the server 4 numbers, depending on the user's choice; after that, the server would turn off the pc, restart it, etc. It all depends on the number received. Is there a rather "simple" way to do it? If it's not to much trouble you could use Atheist's example. (Btw I don't understand the code and, yes, I've checked on [URL])
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Jun 27, 2011
Hey guys, I am trying to send data from client to server (encrypted) and the string sent from the client is not the same as recieved from the server. I've been killing my brain for hours to get this to work but I cant manage. Im converting everything to Base64 string.
Client:
Public Sub SendMessage(ByVal msg As String)
Try
SyncLock myclient.GetStream
sw = New IO.StreamWriter(myclient.GetStream)
[code]....
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Dec 19, 2010
I need to send and receive a large image between programs running on different machines within the same network.
I've looked at using upd however ran into problems with the size of the packets and
(after breaking the image into smaller pieces to get past this problem) the number of packets needing to be processed all at once - and ultimately packet loss.
I've also thought of sending the image by storing it in a common file folder and receiving it by using file watcher as a trigger. However, this just adds further complexities in setup where common folders don't already exist.
Assuming I'm barking up the right tree looking at tcp, can someone point me to/provide an example of how to send an image file using it (vb.net would be ideal). Also, are there practical limits to tcp package sizes?
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Feb 29, 2012
I have these following lines to send bytes using socket
Dim server As New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
Dim myIp As IPAddress = IPAddress.Parse("myIP")
Dim ip As New IPEndPoint(myIp, Int32.Parse("myPort"))
[Code]....
As in the code, I am supposed to retrieved "Halo". Instead I keep receiving sth like "[]".
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Jan 24, 2011
I'm using asynchronous to send/receive from a website I want to block the BeginGetRequestStream method which I have done, using
Code:
WaitEvent.WaitOne(1000 * 20, false);
the problem is that it blocks the UI, which I thought it did not so it basically works like GetRequestStream which does block the UI.
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Apr 12, 2008
Do you know how to create a program to send and receive sms and call from PC from and or to any devices?
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Jun 2, 2011
I have created an application which listens for strings being sent to my pc from a remote unit. I now need to add the function of sending strings back to the remote unit on a button press. I've searched for ages to find a solution but I'm not knowledgeable enough yet with vb.net to solve this solution.
I'm getting the error with the line opensock2 = New IO.StreamWriter(client.GetStream) saying its not connected. So I seem to need to pass the connection from the background worker to the button click, or have it somewhere else in the code to make it accessible. [Code]
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May 30, 2009
as above how to do that man? I will also want to extract the information to be sent from the database. An example of what i am going to do is something like this:
Reference:[URL]..
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Mar 14, 2010
I didn't found any performance counter that would monitor an process's/thread's network bandwidth and not just that of an ethernet card.
So I could see how much bytes did an application receive and send.
Did I miss something or is there another way?
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Feb 21, 2011
I want to send image from server to client via .net Sockets and assign it to a picturebox. but I got problem in receiving data, it's 'Server' side code:
[Code]...
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Oct 23, 2010
[code]...
Now i need to do a few hundred/thousand requests all at the same time or atleast over a short period. I am assuning i need to do this asynchronously. I have looked all over the net and tested various ways to communicate asynchronously and am pretty stumped. None of the examples out there seem to explain how i receive the xml return as a string ("which i will write to file or db")
Does anyone have any working code to do such a process?
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Dec 3, 2008
I'm completely new to sockets etc.I'm trying to create an app that'll allow someone to send short information messages to several other people with the same app, using the internet and sockets(?)I've tried using code from online, but I'm getting no where.
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Jan 24, 2008
I am trying to send and receive data through a USB port on my computer to an external microcontroller.
I built most of the code using the "serial class" but then i read that this would not work with a USB port.
How would I go about communicating with this USB port on my computer?
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Apr 27, 2006
How Can send And receive File with SerialPort in vb.net 2005 i use this sample code for sending string , and now i will know how can send any File by serialport click here there are no sample code in microsoft site i Use "Virtual Serial Ports Driver XP " to Test my sample how can use the Zmodem , Ymodem ,Xmodem , etc in vb.net by serialport ?
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