Sending Array Through Socket?
Jun 8, 2010I am doing the following :
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button2.Click
readData = "Conected to Chat Server ..."
msg()
[Code].....
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.net - Sending Jpegs By Tcp Socket Sometimes Incomplete?
Apr 17, 2010I've been working on a project for months now (vb 2008 express). There is one final which I can't solve.I need to send images to a client from a 'server'(listener). The code below works most of the time but sometimes the image is incomplete. I believe this might be something to do with the tcp packet sizes varying, maybe limited by how busy it is out there on the net. I have seen examples of code that splits the image into chunks and sends them out, but I can't get them to work maybe because I'm using a different vb version. The pictures to be sent are small 20k max.
Any working code examples would be wonderful. I have been experimenting and failing with this final hurdle for weeks.
[Code]...
BitConverter - Sending Data Across TCP Socket
Apr 9, 2010Given the following information
Public Enum Request As Byte
None = 0
Identity = 1
License = 2
End Enum
Protected mType As Communication.Request
mType = Communication.Request.Identity
Debug.Print (BitConverter.GetBytes(mType).Length.tostring)
2
Why does bitconverter report that mType is a length of 2. I would have thought that passing a Byte into BitConverter.GetBytes would just return the Byte. I mean it's no big deal because it's only sending a very small block of data across a TCP Socket, but I'm just intrigued why it thinks it's 2 bytes.
Socket Programming And Telnet Class For .NET To Simplify The Sending And Receiving Of Data?
Sep 28, 2009I'm writing a GUI-based app in VB.net that talks to a LambdaMOO server via telnet, sends commands to display the object hierarchy, then parses the output and creates a visual representation of the object hierarchy.So my question is: is there some kind of "telnet client" class for .NET to simplify the sending and receiving of data, or do I have to write my own using the socket API?
View 7 RepliesVS 2005 Structure To Byte Array For Socket Send
Aug 28, 2009I am trying to communicate with an external device and i am trying to send a byte array to the external device via sockets but i am always getting a response the message size is too small so i am not sure what i have done wrong. Between the data type there should be no alignment present and all numbers are represented in little endian format. The char array is not null terminated as mentioned in the protocol specifications.I have to send data based on a struct that embeds 2 other struct. So here's my vb.net code for the struct used to convert to byte array and the sending part.[code]
View 6 RepliesIdentify 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.
Convert 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
Sending A Array Via A Webservice?
Apr 1, 2009I'm using NuSOAP and it works for strings but what's wrong with this array I'm trying to send..I get this error
Number of indices is less than the number of dimensions of the indexed array.on this line ws.hello(BlockIDs())
Public BlockIDs() As Array
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Try[code].....
Sending An Array From One Form To Another?
Mar 29, 2012I am working on a little project and have had great success, that is until I came upon a slight glitch in programming. Here is the glitch:I have Form1 and Form2. Form1 contains an array, which I need to send to form2 to precess and send on. Is this possible? I have tried sever ideas and none have worked. sending an array from one form to another is possible?
View 5 RepliesVS 2010 Sending Array Between Subroutines?
Dec 10, 2010I'm having trouble with passing an array between subroutines
I have an array called "lines" which is loaded from a text file and then edited according to a series of checkboxes within one subroutine. Each line in the array is essentially a line from the text file
I then need this array passed to another routine so that it saves to a new text file once the save button is pressed. (in this case just the top 5 lines)
At the end of the section that creates the array i have placed this
From File Edit
Call Savefile(Lines)
The section of code below is from the section once the button is pressed
Save Code
Sub Save_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Savebutton.Click
[Code].....
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].....
Sending Array - Redirecting Page To Next DataSet
Jan 29, 2010I'm using javascript to send a array to my code behind so it can be saved. And also to redirecting the page to the next dataset.
function ChangeMonth(utcDate){
PageMethods.javaGetArray(colors);
alert("saving...");
window.location = "./transport.aspx?date=" + utcDate;
}
This works perfectly when there's an alert in between, the saving and the redirect. If I delete the alert it just redirects without saving.
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")
[CODE]...
Converting Structure Within Structure To Byte Array For Socket
Aug 29, 2009I am trying to communicate with an external device and i am trying to send a byte array to the external device via sockets but i am always getting a response the message size is too small so i am not sure what i have done wrong. Between the data type there should be no alignment present and all numbers are represented in little endian format. The char array is not null terminated as mentioned in the protocol specifications.
I have to send data based on a struct that embeds 2 other struct. So here's my vb.net code for the struct used to convert to byte array and the sending part.
Public Structure MESSAGETYPE_OIP_Login
Dim Header() As COMMANDHEADER
Dim UserName() As PSTRING
[Code]....
Sending Email - Operation Timed Out / Not Sending Error
May 27, 2012I am trying to Send an Email with an attachment (using Gmail) but I keep getting errors like "Operation Timed out" or Failure Sending Email". It was working earlier today but I found out that i needed to add Using statement because the email was having a file open that had to be deleted after it was sent but afterwards it doesn't work.
Here's what I have (Portion of it):
Private Sub SendMailOneAttachment(ByVal un As String, ByVal pass As String, Optional ByVal smtp As String = "smtp.gmail.com")
Using oAttach As Net.Mail.Attachment = New Net.Mail.Attachment((Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) & "\" & My.Computer.Name & "_" & fName & " .zip"))
Dim client As SmtpClient = New SmtpClient(smtp)
[Code] .....
The ports are correct I believe, no firewall up on my PC...
Sending Files/Sending Images/Msg For P2P Chat?
Mar 4, 2010Which is better for Sending Files/Sending Images/Msg for P2P Chat?
View 1 RepliesSending E-mail - Getting Error Message "5 Failure sending Mail At System?
Jul 13, 2010I am tring to send e-mail used VB 2008. Below is my code. The error message I am getting is "5 Failure sending mail at System.Net.mail.client.send(MailMessage message).I have two questions. 1.) What am I doing wrong? & 2.) Is there a way the get a more description error message.
message As
New System.Net.Mail.MailMessage
Dim mySmtpsvr[code].....
Sending String Array From Modified Button Control To Form With Modified Button Control?
Nov 22, 2009I have a modified button control with a string array in it. I am having trouble sending the string array to the form with the modified button on it. Anyone know what i can do? The form uses a arrayList to hold the buttons since they are made at runtime.
View 4 RepliesProgrammatically Sending Email - Throws An Exception "Failure Sending Email"
May 28, 2010I was trying to follow a code example I came across the net for programmatically sending email:
[Code]...
VS 2010 : Copy This Array To A Temp Array So That The Temp Array Has All The Same Values As The Original Custom Array?
Jun 19, 2011I have an array of people stored in a custom structure array... how can i copy this array to a temp array so that the temp array has all the same values as the original custom array?
View 4 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.
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]...
View 3 RepliesSocket 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
[code].....
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?
Seaching An Array - Store In A 1d Array A Set Of 5 Place Names And In 2d Array The Distances Between Places
Jul 28, 2010I am trying to create the following program Store in a 1d array a set of 5 place names and in a 2d array the distances between the places. Ensure that the order of the places is the same in both arrays. When the names are places are input the distance between them is displayed. If they are not both in the table a suitable message is displayed
Dim town(1 To 5) As String
Dim Dist(1 To 5, 1 To 5) As Integer
Dim First As Integer
[CODE]......................
I think the best way forward is pass a parameter to the function findnumber.
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)."
[Code]...
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?
View 1 Replies
