Use Tcpclient And Listener To Use A No-ip Host?
Apr 27, 2009is there a way to use my tcpclient and listener to use a no-ip host because i am on a laptop
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Communications :: TcpClient/Listener ?
Jan 16, 2010I'm having a hard time getting the fundamentals down about these TCP Socket classes.
When you use TcpClient, you can set the IP Address or domain name to connect to the server end of the socket. I see examples that use "localhost" as the first parameter for TcpClient. Is this just a broadcast over the network to find the server that has a TcpListener listening on the dictated port of the second parameter of the TcpClient declaration? With any IP address for TcpClient (I realize that's an option, though), how does "localhost" find the TcpListener server?
.net - Difference Between New TcpClient(MachineName, Port) And New TcpClient(new IPEndpoint?
Mar 31, 2011I have a .Net program that has to run on a cluster of server 2008. To find out the right IP I resolve the dns by GetHostEntry(VarDefinedInfConfig).AddressList(0)
but when I am converting my old code (this code picks the wrong IP) dns.GetHostName().AddressList(0) => this returns a virtual IP and not the right one.So I changed my TcpListener to (dns is parameter from config)Dim listener As TcpListener = New TcpListener(New IPEndPoint(Net.Dns.GetHostEntry(dns).AddressList(0), 8001))
listener.Start()
[Code]...
IP Host Error 'No Such Host Is Known'
Apr 24, 2011I am working on an app that searches my network and retrieves ips and host names, but when using this.[code]
View 2 RepliesAdd Listener (event) To A Program?
Nov 14, 2011I'm writing an add on to an existing program through an API, but the event I need doesn't exist. How do i go about creating my own event in VB.
I'm writing a plug-in for a program called promis-e that works in conjunction with Microstation CAD platform to generate electrical drawings.I need to call a function I wrote when a new symbol is added to the active drawing, but that event isn't available in promise, so I was wondering if I could write my own event in Microstation that calls that function ?
Add Winsock Listener In Program?
Nov 1, 2009How to add winsock listener in Vb 2008
View 1 RepliesCreate A Http Listener?
Jan 4, 2010create a http listener using vb .net.
View 1 RepliesStop A Listener Properly?
Jan 22, 2012When I stop my TCP Listener by the Stop command, I always get an error because I use BeginAcceptTcpClient to accept the clients. How can I stop a listener properly?
View 1 RepliesThreading Clients Using A Tcp Listener?
Dec 2, 2009(Using vb 2008 express.)
I am trying to create a server to send clients text on request. I am using a tcp listener to accept clients then send each client to a thread in a threadpool which deals with each client's request then closes the client connection. It seems to work fine but I would like to know how it works. Using the listen loop below I cant help feeling I should be sending some values to the threaded sub. How does it know which client each thread is dealing with?
Sub ListenLoop()
Looop:
Client = Server.AcceptTcpClient
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Chat Server / Listener Program
Dec 16, 2010I am trying to write a program that has a server/listener program and then 2 client programs, the 2 client programs are supposed to be able to chat with each other. Can anyone point me in the right direction on this?
View 4 RepliesEvent Driven Tcp Listener Method?
Aug 23, 2011I'm another newbie with VB (2010) so please bear with me. I am attempting to make a method that is event driven by data threads on the Ethernet port. Simply put, the method is to wait until a data thread from a "Control By Web" 5-input device sends an "information update" data packet to the application, with the application then processing the information. This application is on a private, well controlled network, with no access to the internet. I have a method that is working right now reading data packets when invoked with a timer (see code below) but I really need it to be event driven.
' this is added at the top of the class
Dim tcplistener As New TcpListener(IPAddress.Any, ip_port)
'this is added in the "form1_load" module
[code]....
How To Use Infinite Loops In Event Listener
May 1, 2012I am trying to build a small window component, which has two buttons.
When I click on the Start button, my code needs to establish the connection to server and keep checking the status (this is infinite loop, I have a boolean global variable which is set to true and based on this loop will work).
When I click on stop button, it should stop checking (I will make global variable to false).
I have code to check my server status.
However, since it is kind of infinite loop, moment i click on start, window form is not taking any other actions, since the control not coming out of event listener of start button.
I have many scenarios like this kind of infinite loops.
How to resolve this, what kind of approch should i follow in vb.
SMTP Listener Corrupting HTML?
Jan 30, 2009I have an SMTP listener that accepts incoming connections and routes the message to a folder using FileStream. I have to add x-sender: email@address.com and x-receiver: email@address.com to the first two lines of the file so it can be put in a pickup folder for relay later. It seems as though this way of handling the incoming stream is corrupting the HTML in the email message body. Does anyone have a clue what I am doing wrong or a suggestion that would point me in the right direction regarding what I am missing?
View 7 RepliesUsing HTTP Listener To Parse URL Parameters?
Jul 7, 2011I intend to write a .NET application that does logging and analytics to data using VS 2010. I want to link my application with an external non .NET application via intranet. This external application provides integration through URL triggers. When an event occurs it can send this event parameters to any application via HTTP/HTTPS POST or GET requests. It allows me to select the event parameters to be included in the HTTP request that will be sent as URL parameters. URL parameters consist of a name and a value, and are separated from the URL with a question mark (?).
So an example request can look like this: [URL] any dynamic elements in the URL are displayed in brackets (<>), and are replaced by the corresponding event used at run time.
Now what design method should I follow to create a component in my application to listen to the URL request and parse it's elements. Knowing that I want to protect my URL listener with a username and password.
Vb2008 Creating A Port Listener?
Oct 9, 2009I am using vb2008. I am creating a port listener. When I test the listener I get an exception in the code as shown below.I send one record through ("Hello") . When it tries to read again I get the error. This read would result in EOF. When this happens, shouldn't i go to 0? Instead it keeps its previous value of 5 which is the number of characters in "Hello"
m_blnStop = False
Dim server As TcpListener
server = Nothing
Try
[code]....
VS 2008 TCP Listener - Only Responds To 1st Message?
Apr 8, 2009OK this is my third thread on TCP problems and the first two I managed to figure out for myself within 10 mins of posting before anyone had a chance to reply so lets see if it works again - failing that if you have any advice I'd be most grateful.
I have a server app which should be sitting and listening for messages on one port (4000) and then processing requests and sending data back via another TCP client on a different port (4001). My code is based on someone else's example and it works fine sending and receiving the first message, however after the first message the listener seems to stop listening and never gets any further messages.
Am I misunderstanding how they work? After I get the first message do I need to close the listener and create a new one, or should the same listener keep working until I close it?
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TCP Send String - No Example Of A Client With A Tcp Listener Built In?
Dec 23, 2011I create a small program witch is a tcp client.I sent a asqii string to a tcp device over ethernet thads acts like a server.As soon as the device recieves the input string it will respond back with response data. The problem is i am not getting any response data back from the divice. The lenght of the string is max. 30 characters.When a use WireShark i see the reponse, but VB read nothing.I have read many threads with explenations about server/client connections but no example of a client with a tcp listener built in.I think thad the stream read is to late after the send instruction.
View 2 RepliesPossible To Create A TCP Listener That Does Not Need A Specific Number Of Connections Initialized?
Jan 30, 2009I am totally new to socket connections, so I've pieced together code from the internet to try and start a TCP Listener object. [code] Is it possible to create a TCP listener that does not need a specific number of connections initialized? Can I just have it listen on an open port until data is received? I will be receiving a lot of data at once from many servers...
View 1 RepliesVS 2008 Intercept Specific URLS - Create A Listener Type Application
Sep 30, 2009I'm wondering if it's possible to create a listener type application that would monitor webaddresses that the user attempts to go to. And can then either block or redirect the browser to another website. Purpose: I know this seems to sound a little weird but what I'm attempting to do is a NetNanny type application that can run on the user's PC and the allow, prevent, rewrite (would look for particular keywords and rewrite them "words I wouldn't want my 7yr old seeing or reading), or redirect to other webpages. I would also like to be able to handle both IE and Firefox browser with this one application.
[Code]...
SMTP Mail Server Coding - Write A Port Listener And Display The Message In A Text Box?
Jan 31, 2012I am looking to make a SMTP (Port 25) listener to listen in and accept incoming mail, look at the message source, make changes if needed, and retransmit the message out another port. This iwll make it act like a sort-of intermediary service.how one would write a port listener in VB.net, that could listen in on the port, and display the message in a text box (the whole source, headers and all, since that's what the mail comes in as anyway).
View 3 RepliesInternet Radio Listener - Display Live Artist / Song Info From Several Stations On A Windows Form?
Jan 22, 2010but is there some way to create a program that would be able to listen to internet radio and possibly display live artist/song info from several stations on a windows form? Has anybody done anything like this or have any ideas as to how to tackle this?
View 1 RepliesEnabling SSL With TcpClient?
Mar 2, 2009So how does one turn SSL on in System.Net.Sockets.TcpClient with VB.NET code?
Turning it on in System.Net.Mail.SmtpClient is easy, you set the .EnableSsl property. I cannot find a corresponding property in TcpClient. It's probably buried somewhere.
How To Specify An IP Address For TcpClient To Use
May 16, 2011During development, we usually use localhost as the hostname, like the following
Dim serverListener As New TcpClient("localhost", 8585)
I want the user to be able to enter their IP address via a TextBox instead, like
Dim serverListener As New TcpClient(textbox1.text, 8585)
However, this is not working for me.
Tcplistener / Tcpclient Over LAN
Apr 22, 2012I am creating an application that will be talking over the LAN (and eventually, WAN) which uses the Tcplistener and Tcpclient objects.Now, I have this working absolutely fine locally using the loopack address although when I change the IP of the listener to 0.0.0.0 (listening for all IPs) and the IP in the client application, to the IP of the server, it throws an exception when connecting. The client says something along the lines of the the server has rejected the incoming connection. So i disabled all firewalls temporarily but I still have the problem.I have ran netstat on the server which clearly shows that it is listening for an incoming connection on 0.0.0.0. [code]
View 5 RepliesMake A Basic Client And Listener Chat Room - : Error1Method 'Private Sub CliInfo' Does Not Have A Signature Compatible With Delegate
Dec 9, 2009Im trying to make a basic client and listener chat room but im having problems with method invoker.
Error: Error1Method 'Private Sub CliInfo(CliMess As String)' does not have a signature compatible with delegate 'Delegate Sub MethodInvoker()'
Imports System.Net.Sockets
Imports System.Threading
Imports System.Text[code]......
.net - Working Of Tcpclient Sockets In .net?
Jun 2, 2011I have an application in vb.net which will connect with an hardware device and test its functionality. The hardware device basically spits out data continuosly through Ethernet. That is it recieves some data via com ports and spits out the processed data via ethernet.So my application does both. Thats pretty much the entire app.My problem is i am using tcpclient sockets. Now when i connect a tcpclient to the device using
tcpclient.open(ip,port);
Immediately the device sends some data which comes and get stored in the clientsocket. Then i send a command to it ,only then i read the data from the clientsocket using
tcpclient.getstream().read()
at this time the entire data that is the one which flowed immediately when connected to the device and the one that i actually need after passing command is both acquired. This is undesirable. I need the data which i read only after sending the command. So i was wondering if there is any way to clear the tcpclient socket before we do a read. The manual doesnt show any such method.
Create An Array Of Tcpclient 1 To 5?
Jun 7, 2012I want to create an array of tcpclient 1 to 5. i know it can be done by arralist but how i will add array of socket in arraylist and send/receive data.
View 5 RepliesMake A Tcp Ip Connection Using Tcpclient
Aug 15, 2009i know how to make a tcp ip connection using tcpclient and so on. But what i want to know, how to transfer file in a specific computer?
View 2 RepliesPass A Class Using TCPClient?
Mar 6, 2009I have been reading the following thread by perito which was resolved with a great deal of assistance from Athiest.[url]...
Using the sample code in this thread I have now created a Client and Server app which is successfully sending messages over a network between two machines.
Now that I am able to send simple text messages I would like to progress to my intended pratice of sending more complex information between the machines. I have already written a program which generates and stores data with a class which I use as a data type. I would like to be able to pass this class from one machine to another.
Send Dataset With TcpClient?
May 6, 2010i've a simple question: is possible to send dataset through TcpClient
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