i want ask how i can send hex packet to server .i am able to connect IP and port [code] here we can see that for 3 hex 33 is used and for char "." 00 07 13 and many others are used and for its 0F used [code] it sends same Hex for each "." in packet but i want to send other values as there in original/so i want to create a byte to send from hex code/
View 2 RepliesI am making a software in VB .NET and I wanted to find out where a packet is directed i.e whats its destination IP .ctually what I am doing is kind of a relay.. means for example - A computer(192.168.1.2) wants to send a data to 192.168.1.10:80 but I make it send the data to my server computer i.e 192.168.1.5 which then sends the data to the destination machine which 192.168.1.10:80 .So basically I want to find out where the packet wants to reach(in this case 92.168.1.10:80) . The structure looks like --Client Computer -> Destination Computer [ In normal case ]But I want to do something like this :- Client Computer -> Server Computer -> Destination computerFor the Server computer to send the data to destination computer I guess I will have to know where the packet wants to reach or something
View 5 RepliesWhat Visual Basic code can be used to assemble and send a raw packet, and receive response packets? I looked on MSDN and I couldn't find any documentation for anything used to send a packet.
View 2 Repliesfirst question is: Do you need to port-forward anything in order to receive a response?he sake of all that is good and holy, don't use ACCESS, EXCEL, or a TEXT FILE as a database. If you want your program to use a "local database", without any of the hassle of setting up a MS SQL or MySQL server, just click this link: >>> SQLite <<< Seriously. This is for your own good.
View 2 Replies1. Sniff for packets and analyze them,2. Block packets from reaching their destination (program) and/or3. Replace (send) my own packets to the destination in the same stream?
View 2 RepliesI'm trying to send an image over TCP... I believe I'm sending the image correctly, but how do I receive the image?
Here's my code in sending the image (To shorten the code, I didn't show how the image is created).
Code:
Dim tmpImage As System.Drawing.Bitmap
'client is the connected Net.Sockets.TcpClient
tmpImage.Save(client.GetStream(), System.Drawing.Imaging.ImageFormat.Bmp)
[Code]......
I want ask how i can send hex packet to server
i am able to connect IP and port
in packet the data i send is.3..the hex code of data is 00 33 00 07 00 00 04 0F 95 13 00 00 00 here we can see that for 3 hex 33 is used and for char "." 00 07 13 and many others are used and for its 0F used [code]...
I'm new to VB and am using 2008 VB Express edition. I'm trying to access a webpage's html using HttpWebRequest and that page requires cookies or it sends me to a login page. I found code examples around the web and have written the following code:
[Code]...
There are mail sending program available in the market that can send mail directly. I am trying to create such a program in visual basic 2005 for a long time. Recently, i learned about MX Query. And my concept is like below:
[Code]...
I'm in a programming class, and I need to make a game. Is there an easy way I can send messages, like "w" or "down", between 2 computers so I can have a multiplayer game?
View 1 RepliesI was woundering if it is possible to send messages over network to a lan computer . if it is possible does anyone have the code to make this possible
View 2 RepliesI am writing a program for a Project in school. And so far i have gotten remote execution of commands. And now i want to be able to pull The process list on one machine and send it remotly to the other. Getting the process list on the machine is no problem, but i for the life of me have no idea how to send it to the remote computer?
View 5 RepliesI need to send keystrokes using my InfraRed port on my laptop. As simple as a TV remote control. -being able to send numbers: 1 .. 2 .. and left right etc ... How to access the IrDA port?
View 1 RepliesI have an application that i need to add email to. I can send email to a gmail account with the code below. Does anyone know how to do this sending email to others such as Hotmail?I am using VB.Net 2005 professional
Dim from As String = "rickthefixer@gmail.com"
Dim toCustomer As String = "rickthefixer@gmail.com"
Dim body As String = "This is a gmail test"
[code].....
how can I send a Message String with Attached File? AFAIK, we are sending Message String via Byte Array.
View 4 RepliesIm using VB2008... Net framework 3.0. Basically I have a barcode scanner that is sending the software data...Everything is working fine if I interface the scanner as a keyboard wedge and set the scanner suffix as 'Enter'...In the software I have an event handler on keypress.down...
If keycode.Enter then
.....
.....
....
etc.
However as a RS232 interface I cant get the same result? Hyper terminal reads it perfectly. I've tried all the keypress options but it doesnt work (I assume because it's not actually a key press). when the textbox recieves the CR/LF from RS232? The scanner that does keyboard wedge interfacing is not an option as it is far too expensive for my project.
I'm working with the Minecraft Server To Client protocol documentation for a server I am making.It says the packet is 18+ bytes, but I can't seem to figure out what each byte is for.
View 2 Replies[code]...
The &H30D? i know its a hexadecimal value and may represent a message but i cant find anything about why someone would need to use one, and not just "As Integer = 703". I've found nothing in the VB.NET library or windows messages/functions docs.
For my next project i'll have to create a TCP or UDP server based application. I know how to program a server but i am interested on the limitations of such servers.
how many connections a server may be able to handle at the same time. I suspect that this limitation is based on the type of transfer and how much data or how often it is send to the server.
I also read somewhere that a windows program is limited to 25 threads (connections) per core so if i would have a quad core i can have a maximum of 99 connections granted that the server itself is also a thread. Is that correct?
If the above is correct i wonder how to handle let's say 200 users at the same time. There must be some form / way to handle bigger request loads.
We have a server in the building that we can poll for barometric pressure using TCP. Another developer uses LabVIEW to do this, so it may be a little more straightforward for him.
Here are the instructions:[CODE...]
I have a real time application (by real time I mean physiological SLOW data) not ultra-fast gaming... and I would like to serve the parameters I read to an FTP server (website) so that the data can be reviewed remotely.
I have seen a few tools out there that will do the trick, but was wondering if anybody here has experience with this, and what path(s) you recommend I take to do this in the simplest of fashions.
I'm setting up a basic TCP client/server system and I'm wondering how the back-and-forth communication should ideally work. In my specific situation, the client will have to submit login credentials, and make specific requests from the server (the server interacts with a remote database).Here is what I would THINK to do.. and I'm just looking from input from other devs.
SERVER: Wait for new connections
CLIENT: Connects to server
CLIENT: Once connected, send login credentials with an instruction code.
[code]....
And another scenario.. let's say the client wants to request a log of what's happened on the server recently (the text of a console application window).
CLIENT: Send request message to server for recent log
i.e. $REQ$,105
SERVER: If instruction = $REQ$ and request id = 105, get window text and send to client
i.e. $DATA$,105,<data here>
CLIENT: If instruction = $DATA$ and data id = 105, parse data and display to user
The data being requested could be plain text, or a .net datatable translated into XML, etc. It could be a variety of things.
retriving the DNS server ip of my computer. But with my codes i only manage to the IP address of my computer.
Dim IPAddress As IPAddress = Dns.GetHostEntry(Dns.GetHostName).AddressList(1)
Dim strIPAddress As String = IPAddress.ToString
TextBox3.Text = strIPAddress
A webserver periodically sends JPG images from a webcam via HTTP post. How do I open and display the images on a VB form from an another computer?
View 2 RepliesI have been searching far and wide for knowledge regarding how to make a server program with a client program.Think like Msn ( Messenger ) You have the client and you send a message which is then send through the client to the server, and then to some other client (a friend might be ).I want to make a semilar program where ill make the server and the client myself, i just need a hint or two to get started.
View 1 RepliesThis is in reference to my previous thread :
[URL]
Is there any way to detect if the DNS server is not responding for sure. That is because if I ping the server while my torrent downloads are in progress, I get a "Request timed out".
I have started to learn how to use the TcpListener class to create a server/client chat facility, But im having some issues as to how to perform this at the moment i have the following code for the server.
Dim counter As Integer
serverSocket.Start()
ListBox1.Items.Add("Server Started!")
counter = 0
While (True)
[Code]...
Client Accepted (I understand would most likely need a new thread for each client who is accepted, Once accepted , Return to the main loop to check for more clients.) No Client Connecting I understand that this may have to be done in a thread but ive not looked into using a seperate thread for this to infinitely run.
I am trying to build a sort of basic server thing and I cannot seem to get the thing to work properly. I have a client and a server. The client sends a string, the server receives then replies. I cannot get the server to continue responding.
It works in one direction Client -> Server
But because the server is continuously listening the form becomes not responding, thus I cannot send messages from the server. Although it says that its not responding I know that it is just using all of the processing for listening because when I send something from the client the server responds, just the form is stuck because of the listener.
I recently set up an apache server in a small computer (its an ALIX board) and i need to download some files that are going to be stored in that machine. The web server is running and I can create a file called "moo.txt" and if i go to the web browser I can see its contents Now, I need to create a vb.net application to communicate with this machine and download that file So far I have tried the following
Code:
Imports System.Net
Imports System.IO
Module Module1
[code]....
This gives me "error accessing site an exception occurred during a WebClient request"
I have been searching for a good code example that will place a small server program on my server and then allow me to use a client on my pc that will tell the server program to run a batch file on the server.
I thought this would be simple... I am finding it not that easy.
We have a server that users need to execute a command on however we do not want them to have login rights to the server so this will allow them to execute the batch file without having to log in.