Communications :: Socket Raw And Vista II ?
Aug 7, 2009
Using the Socket raw, with XP I can read without problems both the incoming packets and the outgoing packets. With Vista (I have tried also others Sniffers) is impossible to see the outgoing packets...WHY? what I have to do to see alse the outgoing packets? In reality I have not to read packet data or packet lenght... I need only to count the number of incoming packets and outgoing packets... but with Vista this job seems impossible... or not?
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Aug 1, 2008
I'm working on an application that communicates to torque controllers on the factor floor. The user inputs an IP address and a port and clicks the btnConnect button to make the initial connection. Once that completes a KeepAlive message must be sent periodically to maintain communication with the torque controller. The initial connection works very well but a socket error (see below) grinds everything to a halt when the KeepAlive message is sent. I would appreiciate any ideas the readers may have on the root cause. I'm quite confused because basically the same code is use for both the initial connection and then the KeepAlive messages. I have pasted some of the code as well below.
[code]...
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Sep 7, 2008
I am using VB.NET and I am designing a generic network architecture in which data can be transmitted in various ways. I am wanting to strip down things as much as possible, and I do not want to transmit in plain text. My question today is regarding ideas and example code (if applicable) as far as parsing binary data that is sent over the wire in VB.NET.I want each packet to have a very generic architecture such as <packet type> <address> <payload> or whatnot. I understand that I can use certain bytes as delimiters for these packet fields. I don't necessarily want to serialize everything being that for security reasons, the same library has to be used to deserialize the data.
a) Put my protocol into binary data where each field is delimited using a certain byte
b) Parse that data from binary at the other end.
Once again, I don't want to use plaintext since this can cause a bunch of overhead in comparison.
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Apr 21, 2008
I am new to socket communication. I found a few samples on the web and I managed to make my own host-client communication but i wanted to go a bit further and connect to port 80 of a server and it was just a disaster! First of all I know I can just use the functions that vb has itself but I want to make my own connections ... I have got some reasons I need this one! Do I really have to make them "connect" or just somehow without connecting I get the data? So I'm stack at the point that the connection is made ... it refuses to connect.
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Apr 1, 2009
I would like to know can we use a socket connection on vb to communicate with PC without using GSM modem and SIM card.for example, like sendin a simple text msg to the PC and it will reply back the result back to me the result.
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Mar 6, 2009
I realize this is a broad question, but how do I recieve / send packets. I know what packets I need to send and what Im going to recieve, but I dont know how to send / recieve them.
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Aug 12, 2009
my goal is to control the incoming and outgoing packets to a game server, to alert when a game round finishes the main code is this:
Private Buffer(65535) As Byte
Private RawSocket As Socket
Public Event PacketReceived(ByVal PacketBuffer() As Byte)
[code]....
this code works perfectly with XP (you can read both incoming and outgoing packets to the game server)... with Vista the same code displays ONLY the incoming packets....
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Jan 5, 2012
I m into automation development of FMCG products using Micro-controllers. I get real time data Barcode 2D from TCP/IP connection. My task is to compare the result do some Computation with them and Store the incoming Barcode and results into a Excel sheet in a folder. I m successful with the basic working. Am currently working at slow speed of 1 barcode(22 char info) per second from the TCP/IP data (barcode scanner). Now, comes the real issue. I need to process atleast 5 barcodes per sec ( <200ms per process). I m partially successful with 3 Barcode per second(300 ms per process). so, thats like 300ms per processing. I need to achieve less than 200ms for entire processing. I have used threads and timers. but I m unable to achieve. Seems like storing in Excel takes more than 250ms. Since i come from micro controllers background 1msec is a lotta time to process for me. I m not sure how much time does it take and trust me i find it difficult to guage the time here.
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Jul 14, 2008
I'm running into a problem with this code:
[Code]...
The problem is that I'm running on Windows Vista and the above code seems to want to return the IP V6 information and not the V4 information. How can I force it to return the V4 information?
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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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May 30, 2009
i compile my form with the below code when i run it on vista work fine without any problem but when i try to run in on XP cant run... that happened with any XP machine.[code]when i run my exe to other Vista machines work fine... but on xp NO.
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May 21, 2011
I wrote a Socket Client which will send the Socket Server some data and get some response from Server. This process will be running once in every 2 seconds.
Now what I need to know is How we can identify the connection lost between Server and Client?
I need this to be implemented in the Client side. If there is no connection then Client should automatically close the connection. Once the connection with the server is available in the next attempt it should connect automatically.
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Jan 26, 2009
I am using VB2008 Express and am curious how to send a command via RS232 communications. The string that I need to send is 02h PON 03h. The start and end bits are 02h and 03h.
How can I convert 02h and 03h to its ascii form. In hyperterminal, I use the sequence {(hold)ALT 0 0 2} on the number pad to send the start bit.
I am using this code currently without the start and end bits
Code:
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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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Oct 11, 2009
I am been working on an a small app that has a Forms.Webbrowser control that navigates to a Adobe Flash program. I have developed the app on Vista 32bit platform and have had no problems. I have sent the app to a couple of people to test out and one is using Vista 64bit and is running into a problem. I know the webbrowser control just uses the underlying base framework of IE. The problem on the 64 bit machine is when the site is navigated to it says that it needs to have Flash installed. When the user goes to Adobe's site it says they need to use a 32bit browser.
As stated on Adobe site here:[URL] the Flash player need to be in a 32 bit browser. What options do I have to be able fix this problem? Is there another control that I can use that would be the same in a 32bit platform and 64bit platform? Besides navigating to the Flash program, the browser also goes to standard web pages.
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Jun 22, 2011
I have my index.aspx file:
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="index.aspx.vb" Inherits="Web_Socket.index" %>
<!DOCTYPE html>
<html>
[Code]....
so now my question is how do i connect the WebSocketServer.cs to the index.aspx ?
As a start, all I'm trying to accomplish is just to get the Web Sockets working, and have the connection established, which then will alert("Stock Ticker Connection open ...");
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Apr 9, 2011
how do I keep a Socket declared forever so i can call it in other methods?
All the tutorials i've read just have a server, client, server sends client message, client disconnects. What if I want to remain connected? I've tried making the sockets global but that didn't work somehow.
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Apr 17, 2008
I have a socket which I use to monitor data on a specific UPD port (Let's say 1200).[code]...
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Apr 9, 2011
Then I ran into problem #1 - I wanted to call the methods in another sub but they were shared so I received the error:"Cannot refer to an instance member of a class from within a shared method without an explicit instance of a class"o, I took out shared since I didn't know how to fix it, and put in the Following as Global Variables:
Public listener As System.Net.Sockets.Socket
Public handler As System.Net.Sockets.Socket
Public client As System.Net.Sockets.Socket
[code].....
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Mar 22, 2012
i can connect socket well but i want to ask how can i determine that socket has received data i want to create sub or function that handles socket.receive byte the code i have is
Dim byteData(100) As Byte
Dim size As Integer = soc.Receive(byteData) 'receiving the data from socket and reading its size
For i As Integer = 0 To size
Console.Write(Convert.ToChar(byteData(i))) 'Convert.ToChar will convert the byte value into character
Next
i want to start this code each time when socket receives something?
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Feb 23, 2010
i'm creating an Asynchronous socket programming in vb.net. i've utilised the code from Asynchronous client and server code frtom the following links:m a new user so could post only one link fully)When I try to connect the for more than one client the second client always waits until the first clientcompletes the call. i want the clients to accept calls at the same time
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Nov 26, 2010
I have the following class in a Windows Service that is experiencing some vary strange shutdown behaviors. The server is shutting down from time-to-time with only this message in the event logs and no messages in the trace logs, "The Broadcaster service terminated unexpectedly. It has done this 1 time(s)."
[Code]...
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May 5, 2009
In my small P2P Chat application I am listening on a port for messages and if some message arrives and pending, I am accepting it to a TcpClient and reading the data from the stream, writing back a "Received" response and closing it. This is in a loop with a sleep interval of 500 secs and runs in a separate thread. Is it a good practice to close the socket each time I receive and process a message or should I keep it alive till the chat box is closed on other side?
I am asking this because, when I do a "NETSTAT" on command line while chatting with someone, there is one entry per message that arrives locally. and many ports get to TIME_WAIT status, even if it is understood that they will be removed after 2 mins by the system.
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Sep 21, 2011
I want to access a socket that has been opened for me by my service providers. Their socket is written in PHP and I don't understand PHP at all. Themselves they don't understand VB.Net
The Code in PHP as as below
<?
$num = $_GET['num'];
$ext = $_GET['ext'];
[Code].....
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Nov 22, 2011
how to create tcp socket in runtime. suppose i want to create a 1 to 100 array of a socket and sending data by it how can i do it
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Sep 27, 2011
i am working on 3rd party chat software, when ever i send data to server i get incorrect buffersize of data. like when i convert that data to hex to matching header for splitting data i got huge lengths data
in the above textbox of image i have got some 0000000000000000000.... with the hex data, how can i get only only original data. The code i have used to receive data is
[Code]...
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Oct 18, 2009
I am into minds about how can i learn about programming soket or network.I want to you give me a website guid me about that.
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Jan 12, 2011
this is the first time I try to study the socket of .NET. I configed follow the tutorial here [URL] . Then I try to write some execute code for my project. I insert an "Add item" to a listbox after socket server receiving Data from client. However, the server doesn't execute my "Add item" code and it disconnect to the client? If I erase this code, everything is ok!
[Code]...
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Aug 3, 2009
i have made a console based socket program in vb.net, all it does 2 things:
1- server shows a msgbox when the command msg is sent from the client
2- the server opens the cd try when the command open is sent form the client
when i run it , i type the command open and works just fine , the cd tray opens , but if i type open again or msg it simply wont do anything(this also applies for the command msg, if type it a msg is shown, but if i type it agine or open , it wont respond. so its like one command per session. i tried to put the code in a while loop , but didnt work?
here is the code for the server:
Imports System.IO
Imports System.Net.Sockets
Module Module1
[code]....
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Jan 19, 2010
There are a series of web requests, database handling using php as well as using mysql connector. There are at most 5 timers in one window. some window has 3 or 2 timers as needed.Among some features there is a feature for chat. and I'm doing it with Remote mysql connection using mysql data connector.I'm not much familiar with VB.NET coding environment as well as with optimization issues. However made that app running with some problem, that is, when chatting, sometimes its not working smoothly sometimes stops for 4-5 secs then again responding. I'm not sure if this is happening because of timers. However a chat window has 2 timers of 1sec each.
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