Re-use Socket (UDP) With Another Port?
Apr 17, 2008I have a socket which I use to monitor data on a specific UPD port (Let's say 1200).[code]...
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C# - Read A XML Data From TCP Port Socket
Jun 2, 2010I have a device which send me data over a particular port. The data is in XML Format.
Now I already did a small console application which listen for the data and print out the data on the screen.
Now my plans are to deserialize the xml data or I will create the insert statement into the database.
1) The device send me the data every second (if there is data to send me).
2) I cannot say how much data the device is going to send me.
How can I make sure to capture all data without loose any information..
Communications :: Socket - Connecting To Port 80 Of Server
Apr 21, 2008I 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.
View 7 RepliesPort / Socket Remains Open After Crash
Aug 14, 2009I'm having this problem with a networked app in vb.net. If the program exits normally the port closes fine, however, if it crashes sometimes it remains open and I am unable to close it. The next time I run the program it is unable to open the port because it is already in use. Here's the exception: 10048: Only one usage of each socket address (protocol/network address/port) is normally permitted on how I can reclaim this port, or how I can close it? I tried using the reuse address socket option
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Socket Server Crasher - Enter IP And Port?
Mar 11, 2010I have an application to make a server and clients to read/ send text to it but I want a program I can run from a remote computer that you enter the ip and port and it crashes the server.
View 2 RepliesOpening Socket Port - Danger Of Malware Infection?
Mar 23, 2009My current project is a program that collects meteorolgical data on one computer and allows to access it from any other computer on the net.Everything is working fine so far - it is collecting the data, doing some computation and then listening (as server, TCP) on some port for a client who is interested in downloading this data.When it receives some short command string (something like "GET DATA") it just starts sending the data to the client. The transmission works.
At this point I am getting a bit nervous because I absolutely have no idea on the programming basis of viruses and other malware:When the program is listening on the port (for which I have to allow an exception in the firewall) is there any danger that malware from outside intrudes into the computer?(running Windows XP with latest service packs installed, firewall enabled, antivirus-program installed (is this necessary if there is absolutely no internet activity on the computer besides of this data sampling / server program?)).
If there is danger, what could I do to protect the computer aside from closing the port which I need for communication with the external world?Can you point me to some URL where I can alleviate my ignorance of the basics of malware functioning (on the software level)?
Remote Desktop Api - Setup Port Listening Socket
Sep 30, 2010I'm writing a remote desktop software that starts a connection in reverse mode, using RDP API. My problem is that I try to setup the port that the listening socket may use, but it seems not working: it uses always a random port. [Code] The problem is the seems PortId is ignored: my connection string reports other ports number, and the incoming socket is open on port different from 4000.
View 1 RepliesWindows Service Running Socket Server On Specified Port (Secured)
Jun 30, 2010I wanted to know what are the risks of opening up a socket server on a specified port? Right now I have it limited to only accept requests from 1 specific IP to that port and all the other ones get rejected (using the windows firewall), is there a way to implement an authentication or anything else so I can allow it to be accessed from any IP worldwide yet have it secured?
View 1 RepliesConvert A Byte Array From Socket Into A String To Replicate - How The Serial Port Receives Data
Sep 21, 2010I've inherited a tested function that processes incoming data from a .NET Serial Port. (Dim RXBuffer as string = serialport1.ReadExisting) I've written a different part of the application that processes a byte array as received from an asynchronous .NET socket.
Is there a way I can convert the byte array into a string as if it arrived from the serial port?
I would prefer to rewrite a very long 'if statement' into byte array functions syntax that look like:
dim b as boolean = IsBitSet(state_buffer(i), j) 'rather than:
dim b as boolean = (Asc(Mid(RXPacket.Pdu, CInt((i - (i Mod 8)) / 8) + 1, 1)) And CInt(2 ^ (i Mod 8))) > 0
Usage Of Each Socket Address (protocol/network Address/port) Is Normally Permitted?
Aug 11, 2009SocketException was Unhandled: Only one usage of each socket address (protocol/network address/port) is normally permitted I get this error every time i click collect a second time.
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Identify Connection Lost Between Socket Server And Socket Client?
May 21, 2011I 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.
Client Socket - Send Message Through Client Socket Receive Specified Argument Was Out Of Range Of Valid Values
Oct 15, 2011Below 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")
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Read The Data From Barcode Weight Scales By Serial Port And TcpIp Port?
Nov 27, 2010I'm mohammed from Oman ,I'm visual studio.net programmer How I can Read the Data From Barcode Weight scales By Serial port and TcpIp port
View 7 RepliesGet FullName From Available Serial Port (Com Port) From Device Manager In Windows Form With .net?
Jul 25, 2011I have a Windows form.in windows form have a combo box that give me a list of available port serial with it code (Dim ports As String() =SerialPort.GetPortNames())for example( Com1,Com8,Com15,...).but I want to give me fullname of serial port in device manager for example in dvice manager is these (Comunication Port(COM1) - Printer Port(LPT1) And USB Serial Port(COM8)).how to Get it?
View 2 RepliesDetect The Address And Port Number Of The Parallel Port In Computer?
Jun 9, 2010I would like to detect the Address and Port number of the Parallel Port in computer.
View 4 RepliesThe Given Port Name Does Not Start With COM/com Or Does Not Resolve To A Valid Serial Port?
Aug 2, 2011If I uninstall the COM1 and reboot, it works. If I shut down (power off) and restart, I get the message below. If I uninstall then click on Scan for Hardware Changes,The given port name does not start with COM/com or does not resolve to a valid serial port. Parameter name:portName
View 8 RepliesCommunications :: .net MSComm Port USB 4 Port Relay?
Oct 20, 2011I am trying to get my 4 port USB relay board to work in VB.net using the COM PORT. I found some code from a poster who has the 16 port USB relay version. When trying his code i can only get it to turn on relays 1-3 all at the same time. The product can be found here: USB 4 port relay
"01+//" - Relay 1 is switched ON
"01-//" - Relay 1 is switched OFF
"02+//" - Relay 2 is switched ON
"02-//" - Relay 2 is switched OFF
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So i am confused as to how to separate each relay out with that code above and just be able to turn on any number 1-4 relay on or off independently from each other!
MSComm Port USB 4 Port Relay
Oct 20, 2011I am trying to get my 4 port USB relay board to work in VB.net using the COM PORT. I found some code from a poster who has the 16 port USB relay version. When trying his code i can only get it to turn on relays 1-3 all at the same time. The product can be found here: USB 4 port relay I was following what the guy in the post was doing to turn his on:
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Communications :: Serial Port - Run Program, "Access To The Port 'COM1' Is Denied"?
Oct 15, 2008Im having problem with the Serial Port. When i run my program, "Access to the port 'COM1' is denied". What does that mean? Im not sure whats happening because theres no error in my code. Someone suggest me to use 'COM2'. Which is also the same result. I have a microcontroller, programmed and run it. And i need to capture the data onto my vb, which is on a multiline textbox. How to i do that?Just to double check my code?
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Reading Serial Port Read Data From Serial Port?
Aug 16, 2011i am a absolute beginner and i want to use vb to receive data from micro controller through serial port using rs232 standards, i found this code to receive the data serially, can any one tell me where should i paste this code, so that the data received will be displayed in message box.Private Sub DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) HandlesSerialPort1.DataReceived
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Serial Port Example Code - Connect To A Modem Thru The Serial Port
Oct 26, 2011The link below has code to connect to a modem thru the serial port but it is for an earlier version of VB. when I convert the code, it does not fully convert and has 4 errors that prevent building the project. can someone tell me what needs to be changed or added?
[URL]
Note: the error: not CLS-Compliant
Get USB Control For The USB Port Communication? Like The SerialPort Control For The COM Port
Jul 17, 2009Do someone know if there is a\\ USB control for the USB port communication? like the SerialPort control for the COM port.
View 2 RepliesC# - Set Up A Web Socket Connection In .NET
Jun 22, 2011I 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 ...");
Keep A Socket Declared?
Apr 9, 2011how 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.
Socket Won't Stick?
Apr 9, 2011Then 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
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VS 2010 : How To Use Socket
Mar 22, 2012i 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?
Asynchronous Socket Programming?
Feb 23, 2010i'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
View 1 RepliesC# - When To Call BeginAccept On A Socket
Nov 26, 2010I 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)."
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Closing Socket Each Time?
May 5, 2009In 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.
Communications :: Socket Raw And Vista II ?
Aug 7, 2009Using 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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