i have made tcp connection to this webpage using tcpclienti can send commands like GET /Pagename.aspx to get the htmlnow is it possible that from webpage.aspx i can get the connected client stream and write to it and tcpclient gets that data ?
View 1 RepliesThis app is trying to send messages to a client listening on the port. The client's logs show that their port is being opened and closed, but no data coming in. Is there a bug or something missing in the following code, like perhaps stream.flush or stream.endwrite or a thread.sleep(0) line, that could cause this? The puzzling thing is, WireShark on the client computer does show the message my app is sending coming into the listening port.
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for a school project i need to make a vb application that can stream from client to client.
View 4 RepliesMy first post here in vb forums. I'm new to sockets programming since I migrated from Winsock and I learn a lot from Atheist. using his code, I can't access the messageReceived() every time a client sends a message on the server. but then I put a code to catch the message on sub doRead() and I can retrieve the message. My problem now is how can I determine if a client is still connected to the server or not so I can delete it on the ConnectedClient ?
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Note: the server runs on Win7 x64 ultimate and the clients are laptops on win7 x86. I read a comment that the server should be having a static IP address, but when did it together with the clients, It still doesn't work. I am just using a switch for the network.
Is their a way to give every client that is connected to the server an ID.
EX: SendMessage(Client.ID,"Hello")
I'm trying to make a client and a server connected in vb 2010. how to make a client and server connected? There is only vb2008 in the codebank and if my vb2010 tries to convert it to vb 2010 it will error.
View 1 RepliesI have written a code for sending emails using my vb.net application,ok.Now i want to inform my client if and only if he is not connected to the internet before the sending emails.so it means the purpose of my code will be to check if he is online or nt and if not then inform him to get online and then try sending the email.How to do this?
View 5 Repliesi use a webpage in my form. the webpage has a simple script used to upload a file.so the user selects a file then presses upload.after the file is uploaded the page is refreshed showing the direct link of the uploaded file.Now when this happens i want the program to 'extract' the link and close the bwoser control.
View 2 RepliesThe problem I have is: When I click on cmdListen in the server form and cmdConnect in the client form,both programs won't respond and they crash for some reason I don't know.
Client source code:
Code:
Imports System.Net.Sockets
Imports System.Text
Public Class Form1
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Code:
Imports System.Net.Sockets
Imports System.Text
Public Class Form1
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I didn't make this code but can someone explain to me how to add more than one client to communicate to add to this code?e.g 3 people to talk or is it not possible?
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I am looking to go to a URL/URI download the resulting string as if I had opened a file and then get it out into a String variable.
I have been stuffing about with IO.Stream and Net.httpxxx but haven't managed to get the elements to line up in the right way.
I get "the given path's format is not supported" from opening the page in the standard stream, because it's not in the local file system ... that bit i understand, the bit I don't get is ... how do I achieve the equivelent of:
Public Function GetWebPageAsString(pURL As String) As String
Dim lStream As IO.StreamReader = New System.IO.StreamReader(pURL)
Return lStream.ReadToEnd
End Function
I've been trying for a while to use a method I've found on the net to login to a webpage then download zip files off the page.Here is what I am doing:
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strURL = "https://www.someurl.com/"
Client = New WebClient()
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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.
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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.
I 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 RepliesI 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)
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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.
Everything on the client end now works fine, but I am having problems with my console based server. Users can connect and chat just fine, but when a user disconnects, the server does not know how recognize this, often spamming the last message that was sent by the user, follow by the server app crashing.
I need to find a way to stop streaming info to the user (and what ever else I need to stop to keep the server from crashing) and broadcast a message that says which user is disconnecting.
I need to check if my client is connected to the server by starting a new thread. So in short I need a way to know if the client is still connected to the server.
Here is my
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I have a simple tcp server listening for clients. I use a mud client to test if it's working. The mud client says that it's connected to 127.0.0.1, but the server doesn't show the msgbox that a client has connected.[code]
View 3 RepliesI have this code below for a client module, to allow the client to connect to multiple servers, though a IP list. The problem is that it is connecting ok to the servers, and it is sending messages to servers, but is not receiving messages FROM servers.
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Developing an application that will serve as an application server (Similar to 'Run Advertised Program' that is present in Windows Server). The downside to using Microsofts current system is that it a) requires Windows Server and b) Works only with systems setup in a proper Domain. I have a number of systems in my house and I'm fed up of downloading from the net or setting up network drives etc etc. I've tried using the code in a similar topic posted a few threads down, but it obviously doesn't support multiple client connections.
View 9 RepliesWell first off let me say I am not sure if this should be in network or game programing but I think network programing is more relevant.
Anyway
I am creating my first game that runs over a network and so far everything is working. I have a server program, the clients can connect and see each other flying around. (weeeee)
However I have hit a wall when trying to make them shoot. The most easy way I can think to do this, is to have the client tell the server �hay i need a bullet pointing at x angle moving at y speed� the server then spawns a bullet entity then sends a spawn entity packet to all the clients. The main problem I see with this, is that the clients gun will have a delay based on latency.(funValue -= 1000)
The only other way I can think to do this, is to have some fake bullets spawn on the client but when the client gets the spawn bullet packet from the server, I am not sure how to keep track of what fake bullets to delete.
I would like to ask how to connect our application to connected computers in a LAN.Will I use the winsock control?How can I run queries using a server database?Any answers are welcome.
View 3 RepliesAfter three days research, I'm having trouble finding a simple sample app that will work as a server and wait for an ethernet connection request. When it gets one, it should complete the connection, then wait for another connection request.
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Above is the response of the page I am trying to get if I enter the URL: However, the program just crashes with the following code (i.e. never even displays final - meaning stream is still going on) I think that it is streaming the video, in addition to the source- which I do not want to happen How can I retrieve this source?
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I created a dll for my host and client, but but does not work! where's the error?
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I am working on a client/server based application and I have run into quite a few snags stumbling my way through I have resolved quite a few issues, and need help with something new. I am using a TCPIP client/server and I find that at the end of each loop when I am reading the data from the network stream it appends a character to the end. I have tried removing the last character but I am not sure if it is getting the whole character successfully because I still get lots of different errors both in binary and xml deserialization whcih I think is related to this. Does anyone know the ascii code for the termination character for TCPServer/Client communications?
View 15 RepliesI 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)
I have a small problem with this code. I am adding information to my listview from multiple textboxes. As I add the info I automatically update a text file with the code shown below. The problem I have is When I add my first row the code will not write the data back to the text file, however if I add a second row the code is quite happy to write both rows of data back to the text file. I cannot for the life of me see what is wrong.
'Write tool info to text file
Dim outputstream As StreamWriter = File.CreateText("C:\MFSProFiles\" & CObj(PartNoTextBox.Text) & ".tme")
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I have an embedded DLL in my app and I need to write it to the filesystem at runtime. I have this so far:
Dim _assembly As Assembly = Assembly.GetExecutingAssembly()
Dim _rawstream As Stream = _assembly.GetManifestResourceStream("MyFile.dll")
I just need to write _rawstream to a file now.
EDIT: This has to be .NET Framework 2 and CopyTo does not exist
Just starting up on VB 2008 Express (.NET). Trying to write to and read from a file. It runs without errors, but the messagebox only shows the 'OK' button, not the contents of the file as I want. I thought that maybe I have to rewind the file before reading, but AFAICS there is no 'StreamRead.Rewind' or Reset or something.
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