Document About Socket Or Network?
Oct 18, 2009I 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.
View 2 RepliesI 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.
View 2 RepliesI am trying to send an email through a remote Microsoft Exchange Server with an application I am making in VB2005. I have access to the server, as well as the required credentials. The only part I am unsure about is the SMTP port number. The error i get is: "Failure sending mail."inner: "Unable to connect to the remote server" inner: "A socket operation was attempted to an unreachable network xxx.xxx.xxx.xxx:xx"
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i have tried to print pdf file through network. i have used printdocument. File is printed with no content. Content is not set to the printer. My code is
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
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SocketException 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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assist me to create a form in which i need to show the documets like "*.doc,*.xls,*.txt,*.pdf" which is in network share folder
View 1 RepliesI am trying to manipulate files as part of a Document Management application that stores documents in a location on a Network Drives. But the My.Computer.FileSystem.Drives collection does not contain the Network Drives mapped on my machine. I have about half-a-dozen of these, but none of them seem to show up in the Drives collection and thus are not visible to the other FileSystem functionality I need to use for file management.
how to make sure the Drives collection contains all my drives? I am running VS2010 Premium edition on Windows 7 64-bit on a 64-bit Dell machine.
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.
Here is my idea so far: I have a bunch of computers connected in a local network. One of them is a MySQL server, one will have a vb.NET program wich will act as a "second server" and the rest will be different clients. What I want to do is that the "second server" will send out some kind of message or network package to some of the clients in the network, and they will execute a code based on what message it is, or what kind of package it is. I'll give you a simple example:
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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")
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I have a .NET 2.0 *.dll that calls My.Computer.Network.Ping(). The *.dll is then run out of an *.exe via AppDomain.CreateDomain() and Invoke(). The problem is that this works just fine under Windows XP but under Windows 7, I get an exception saying that no network connection is available. I tried the Ping() call out of a small console application under Windows 7 and it works just fine.
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i am using VB. net 2008. I am having a hard time using this code: ("L:SWPPPSWPPPBookMerge.doc") what is the shortest method that the system will search for the document without placing the document address.
View 1 RepliesWe are opening a Word document from our Visual Basic 2010 application using the Word object. When we run our application under Windows Server 2008 the document name is truncated in the main window title for the document. This is not the case when we run our application under Windows XP. Is there a way to prevent this truncation under Windows Server 2008?Mary Leathem
View 3 RepliesWhere can I find information on how to use XPS Document Writer to create a Word or Adobe document?I can print my VB2008 print document to a file, but how do i convert this file to Word?
View 1 RepliesI just begin learn VB .net. I met a problem which axwebbrowser.document can not cast to mshtml.document. My webbrowser is loaded a PDF screen from some web site. My purpose is to get the content from PDF page.
View 1 Replieshow to write the document properties in an Excel document? (ie. author, title, comments, etc.)
View 3 RepliesI am writing some code as part of a framework for opening a file.The file is of custom type and should not be opened by more than one instance of my application. To stop multiple file opening I use a filestream to create a lock file and then keep said filestream open. This seems to work in preventing another instance of my application from opening the file ( as it will fail in recreating the lock stream in the files open code ) but if the file is on a network share and the network drops then the original application also can not access the file any more.The code to get the lock stream is as follows:
Try
' We need to keep this stream alive to prevent other applications gaining access to the lock
mLockStream = New FileStream(mLockPath, FileMode.CreateNew, FileAccess.Write, FileShare.None)[code]....
In this I create the lock stream the first time round and then if another application tries to create it, it throws an exception and stops them from getting any further. This is kind of how it needs to work, unfortunately as I said, if this is done across a network and then the network connection is dropped for some reason then I can not delete the lock stream as I get an IOException telling me a process cannot access the file as it is open in another process ( which shouldn't be happening I don't think).
I need to be able to create an xml document given that the format is specified in a given xsd document and the data is in a dataset. Is there an easy way to do this in Visual Studio or Access 2007 or will this require writing out the xml document one item at a time to match the xsd?
View 4 Replieswhy I get There is an error in XML document (5, 14) while Iam trying to Deserialize an XML document.? This is the XML document:
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I have a function on my program that allows a user to load a listbox filled with words that are matched with words inside a databank. The databank is filled with 2 string arrays and file of .jpg Pictures. The Arrays attached to each word inside the listbox are approximately one page. Each page is two paragraphs of Text(string Array) and one Picture(20Kbytes).My problem is this. When the user selects the option print all, the listbox with approximately 10255 words is selected and begins to fill a Microsoft Word Document.Because the alotted amount of space needed for the MS Word Document is approximately 5 Gbytes,I need to open about 10 Documents and insert the String Array's and Pictures into each document one at a time.Is there anyway to check the filesize of the Open Document before saving the document.This way I could check the open document inside the algorithm for 512 Mbytes of memory and save the document before the size gets above 512 Mbytes.[code]
View 2 RepliesI have a problem I want to make a server and client where the server is password protected and will make the client display files/folders in a designated folder which will be in the server's current directory and the client will ask what IP and password to connect to and if the password is correct is allows the client to access the files/folders in that folder in C.D. of the server and the client can download any file within the folder by clicking a button, yet don't even know where to start.
View 7 RepliesThe application I support is creating an amalgamted Word document by copying couple of Word documents in one document right after each other. The problem is the format of the some of the fields of the document that gets appended is changed in amalgamated document while the amalgamated document is the copy of AppendDocument (imagine if we have one document to copy in the amalgamated document)
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I have my index.aspx file:
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="index.aspx.vb" Inherits="Web_Socket.index" %>
<!DOCTYPE html>
<html>
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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 ...");
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.
I have a socket which I use to monitor data on a specific UPD port (Let's say 1200).[code]...
View 3 RepliesThen 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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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?
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
View 1 RepliesI 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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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.
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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