Sending Images From Client To Server?
Jun 11, 2011i want to send multiple screenshot images from my client to server.. now i already get the screenshot code.. and the only problem i have is that .. i can't send them in my server..
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C# :: Sending Byte Array From Client To Server?
Jun 15, 2010I am new to VB.net and struggling to get out of VB6's way of sending data, I am doing this to send a byte array from my client to server, please advice if this is the right way,The sending portion:
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
Dim arrNo(3) As Integer
[code].....
VS 2008 - Sending Data From Client To Server (No Communication)
Oct 13, 2010I'm not sure what I have done wrong, I am trying to get my program to send data (UsernamesPasswords) from client to server, then the server says if it's right or wrong.
The error is on this line:
Dim networkStream As NetworkStream = TcpClient.GetStream()
Heres the Client:
Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
If TextBox1.Text = "" Then
MsgBox("You must enter UN/PW!")
[Code] .....
Missing Data While Sending Large String Over TCP. (client/server)?
May 16, 2012I have a Client/ server application where the Server is in java and Client is in Vb.net.When i send large string from client to server am not receiving complete text.code attached below.
client-- VB.net-
Try
Dim clientSocket As New System.Net.Sockets.TcpClient()
[code].....
Develop A Client/server Application That Requires Sending Files And Text?
Mar 24, 2010As some of you may know, I'm trying to develop a client/server application that requires sending files and text. Text is not a problem, this works fine, and for some of the part, sending files works, but they get slightly mangled in the process. For example, I used a 4x1 BMP that was alternately coloured red and white and tried sending it across. The output was the correct image dimensions, but the colours were wrong. It was more like a very dark red and very dark grey. I inspected the files with notepad, and the header was the same, but the data was different.
I did some research and apparently need to use a BinaryReader and BinaryWriter as opposed to reading the data as a string (like I was when it was being mangled) but now the data is all wrong, even filesize is different.The code below is a simple example of code for reading an image and then writing it again elsewhere using Binary Read/Write.
[Code]...
VS 2008 TCP Server / Client - Client To Send The Server 4 Numbers - Depending On The User's Choice
May 9, 2009how to create a client/server... But I couldn't... I don't want anything fancy. Just want the client to send the server 4 numbers, depending on the user's choice; after that, the server would turn off the pc, restart it, etc. It all depends on the number received. Is there a rather "simple" way to do it? If it's not to much trouble you could use Atheist's example. (Btw I don't understand the code and, yes, I've checked on [URL])
View 9 RepliesVS 2010 : Send Data From Client To Server (encrypted) And The String Sent From The Client Is Not The Same As Received From The Server?
Jun 27, 2011Hey guys, I am trying to send data from client to server (encrypted) and the string sent from the client is not the same as recieved from the server. I've been killing my brain for hours to get this to work but I cant manage. Im converting everything to Base64 string.
Client:
Public Sub SendMessage(ByVal msg As String)
Try
SyncLock myclient.GetStream
sw = New IO.StreamWriter(myclient.GetStream)
[code]....
Sending Files/Sending Images/Msg For P2P Chat?
Mar 4, 2010Which is better for Sending Files/Sending Images/Msg for P2P Chat?
View 1 RepliesClient-Server-Client Multithreading - Instant Message Another Client
Jun 21, 2010We are creating a Who wants to be a millionaire style game in VB. Our server is pulling information such as questions and answers from a Access Database and sending them to the contestants (Clients). All transfer of information is directly from the server to each client. One of the "Life Lines" we want to use is "Ask a friend", where one client is able to Instant message another client for a short time to get help on the question.
[Code]...
Create Client-server App, In Which Client Can View Files On Server?
Nov 15, 2011basically i just want client to say "C: emp" ENTER
then, server must reply with all its files in c: emp
Communications :: Client-server Communication Program - Click On CmdListen In The Server Form And CmdConnect In The Client Form
Jul 23, 2008The 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
[CODE]...
Code:
Imports System.Net.Sockets
Imports System.Text
Public Class Form1
[CODE]...
Server/Client - Basic Tcp Server/client Application
Mar 30, 2009I've basically made a basic tcp server/client application. The thing is that I'm behind a router and so will be the other people that use my clients. I've had to use port-forwarding or the software "rinetd"to run quite a few applications online.
Let me explain: I'm on a lan network that connects to the internet. Whenever I want to host a server - for instance a basic ftp or http server. If I give my external IP to anyone, they won't be able to access my server. Even if I portforward, it doesnt work. I have to use rinetd here. For other applications, portforwarding works. I'm not sure how these things work at all.
Anyway, my issue now is that I have created this server/client application. I'm having serious doubts that if I run the server, I'll have to either a) portforward or use rinetd to get people to connect to my server. IF I need to portforward, that's fine. However, using rinetd would really suck... My 2nd concern is as follows: IF the person running the client is in a similar situation as me (i.e he's on a lan that has a router which connects to the net), will he have to portforward or use rinetd as well? If he portforwards that's fine. But I don't think I could get people to use rinetd.... Also, if there are more than 1 person on a lan trying to connect to my server, there is a big problem when they try to portforward: they will only be able to allocate one of their internal ip to that port, and the others won't be able to connect, right? How does this work? I mean, I use many softwares like msn/skype/(some games)/firefox that do not need portforwarding/rinetd. Yet they work. My housemates(other people on the lan) use the same softwares, and it works fine. There's no clash/probs watsoever How come these run fine?
Anyway, back to my issues. Given I have no knowledge about how the above work, I was wondering whether there was a way to host a vb .net server application on an external website (external to my house) so that I might *avoid* the above mentioned problems, and to what extent that would be a sound solution.
Writing A Program With 1 Client And Server Where Client Side Creates A Text File
Dec 1, 2008I have been reading through Atheists posts in regards to client-server and TCP client/server connection's. But how do i go about writing a program with 1 client and server where the client side creates a text file.Once the server sees there is a text file it connects and downloads it to itself or the client pushes the text file to the server.Once on the server i will read the text file and put its info into a sql db.
View 14 RepliesVS 2008 Chat Server/client - After The Client Clicks Disconnect Or Closes By Task Manager, Looses Connection
Aug 18, 2009Im using the code from [URL] as a starter, most of the code is the same. the chat system works fine but on the client a added a disconnect button "clientSocket.Close()" and as soon as i click that i get errors, on the client, this is the code...
Private Sub getMessage()
For infiniteCounter = 1 To 2
[CODE]...
And this line...
serverStream.Read(inStream, 0, buffSize)
gives me "Unable to read data from the transport connection: A blocking operation was interrupted by a call to WSACancelBlockingCall."
Now im talking the server, after the client clicks disconnect or closes by task manager, looses connection, etc the server crashes and gives me.
Chat Client To Client Without Server Just Use IP Address For It?
Apr 19, 2012Chat Client to Client Without Server Just Use IP Address For it?
View 1 RepliesWhich Is Better For Sending Images Via Tcp?
Mar 13, 2010which is better for sending images via tcp
View 2 RepliesCommunications :: Sending Images Over TCP?
Jul 24, 2008I'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]......
Sending Messages Between Client Machines On A Network?
Mar 15, 2012i have several clients on a LAN network, these clients all have access to a particular sql server. i want to write an application that allows any client on the network to send one or more messages to another client on the network providing that both clients have access to the specified sql server.
View 1 Replies.net - Formatting And Sending Client Messages, Use Of XxxService Classes?
Jun 21, 2011Need some advice on class design. I've just started to use xxxService classes, so not really sure when and how to use them. A number of (identical) client applications connect to this program with socket TcpClient. Different type of messages needs to be sent from several different classes. Should I call a service class, with static methods, whenever I need to send some message (like code below suggests), or should I rather raise an event, and have some class registered to those events, that will format and send the messages.
That would kind of hide that sequence of events from these classes, but on the other hand, it would be a centralized class where one can see easily all events that trigger a message send. Which feels like a benefit. Would like to hear some advice on this. And if my last suggestion makes sense, what could such class be called, and would it be considered a ..Service class?
Example: (code is a bit "rough")
Class UserConnection
tcpClient As TcpClient
Public Sub SendMsg(msg as String)
[code]....
Include Images In A Html And Sending Mails
Nov 18, 2009I have a Windows Application, where I can sending mails (htmls). I have the next function to sen mails:Public Shared Function MandarMensaje(ByVal from As String, ByVal para As String, ByVal subject As String, ByVal body As String) As String..In "body" i put the code of the html, and the function works ok, but I want to the html include images that are in a folder next to the html, for this reason I want to include the images changing the code of the html for include the images there, I have listened something about use "mime" BUt I don't know if it is the correct way.
View 5 RepliesSending The Mail Using Email Template Images?
Dec 29, 2009I have windows Application from where I am sending the mail using Email template images. But on different SMTP server it show different result . It attached the template images as an attachment.I am using following method as mention in the link to send email template [URL]..
View 2 RepliesVS 2008 Sending Strings + Images With NewtworkStream?
Sep 26, 2009I'm trying to send a String with an Image from Clipboard ("String|" & Clipboard.GetImage)In VB6 it was possible (Winsock1.SendData "String|" & Clipboard.GetData(vbCFBitmap)), but in .NET i'm gettin the error, that the "&" operator is undefined for the string and image type...
#Region " Send & Recive "
Public Function ReciveBytes() As Byte()
Dim tmpBytes(TCPCli
[code].....
VS 2008 Multi-User Chat Program (Server & Client) With Main Server?
Aug 10, 2009Multi-User Chat Program (Server & Client) with Main Server?
View 1 RepliesClinet/server The Server Broadcast Media Files To Client I Used Tcp/ip Protocol?
May 13, 2011i have 2 application clinet/server the server broadcast media files to client i used tcp/ip protocol the server code is work good but i have a problem in client code i need ineed someone to correct the code .iwll show where the error is in the code note: i call the class in the main form dim a as recive in the starter of the main form class to be gloable .
[Code]...
SQL Server 2008 Configuration For Client Server (Windows Form) Application
Apr 6, 2012Case : I'm creating an application (desktop application) with VB.NET (actually windows form), and using SQL Server Express 2008 for its database.
[Code]...
The SMTP Server Requires A Secure Connection Or The Client Was Not Authenticated. The Server Response Was 5.5.1 Authentication Required
Nov 28, 2009This emailing code wont seem to work in my program. I get an exception "The SMTP server requires a secure connection or the client was not authenticated. The server response was 5.5.1 authentication required."
Imports System.Net.Mail
Public Class emailStudent
Private Sub sendEmailButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles sendEmailButton.Click
SendMail()
[code]....
Difference Between SQL Server Native Client And SQL Server DSN To Support SP Execution?
Jul 9, 2009I wrote a VB code to call a sp in sql server 2005, which returns a recordset as follows:Dim objRecordset As ADODB.Recordset Set objComm = New ADODB.Command
Set objRecordset = objComm.Execute If Not objRecordset.BOF And Not objRecordset.EOF Then
Set objRecordset = objRecordset.NextRecordset I need to continue to get next recordset since there are many select statements inside the sp which I need to get the data. The code works fine when I create the DSN using SQL Server but it does not work when using the connection string or SQL Server Native Client DSN. It either breaks at Set objRecordset = objComm.Execute ( connection string )or at If Not objRecordset.BOF And Not objRecordset.EOF Then(SQL native client )
I have worked on this for a couple of days now and could not figure it out.Is this a bug in SQL Native Client or something related to some configuration on the database side? IS there a way I can change the connection property to get this working using SQL native client or connection string?
Info: Multithreaded Server Socket Program Or Client/Server?
Oct 26, 2011I made a simple TCP server (I've found the example on the web) in VB to receive data from about 40 TCP clients.The clients are not synchronized but sends data about every 18 minutes; the problem is sometimes several clients sends data at the same moment, so I can't receive data.I also made a second program that reads the data (server program writes data on a file, read from the second program) scheduled.
My question is this: I've seen on the web examples about Multithreaded Server Socket Program, so I suppose this could manage my 40 clients (but now the clients are syncronized and send data at the same time in client mode) or is better get data (I have a central client that asks data to all 40 devices in server mode)?
Second question: can I make a single program where I run both TCP client and TCP server at the same time?
Client Server Application - How To Make Clients On Sql Server
Sep 24, 2010How to make clients on sql server i mean when i will install my application on clients how i will connect it with sql server?
View 6 RepliesTCP Client/Server App That Sorts Out Text That Is Recieved From Server?
Aug 18, 2011I'm currently "trying" to make an app that gets a certain text from the client and sends it to a server and the server sorts it out every text that he gets from the client into a different label every time he gets a text from a client. For example :
Client1 sends certain text to Server and server puts it in label1.text
Client2 Sends different text to Server and server puts it in label2.text
Client3 sends different text than 1 and 2 to Server and server puts it in label3.text
and so on.