Send A XML Serialized Class Over A Network Stream?
Oct 13, 2009
I'm trying to send a XML serialized class over a network stream
the send is working
Dim IP As Net.IPAddress = System.Net.IPAddress.Parse(IPAddress)
Dim IPE As New Net.IPEndPoint(IP, 10003)
Dim TCPClient As New Net.Sockets.TcpClient
[Code]....
I always get an error {"Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host."} The XMLFile has the xml document in it most of the time and I can go on and everything works but 1 out of every 5 times it doesn't work at all and the XMLFile contains nothing ..
View 6 Replies
ADVERTISEMENT
Jun 7, 2010
How can I send and recieve serialized objects over a TCP connection with size and data type values in the header (within array(0) and array(1) values)?
I know how to serialize and send the object using
BinaryFormatter.Serialize
But on the receiving end I dont know the size of the obejct sent therefore I dont know when to stop reading the data stream. I also dont know how to take the recieved data and put it into an array of bytes().
View 2 Replies
Oct 18, 2010
So i'm still goofing around with this chat app thing. Current when a user sends a message it sends to all clients connected. The server stores all clients and their IPs in a hash table, so what i want to do is each time a client joins, the server will broadcast the updated hashtable to each client. I know i can make a mess and get the server to broadcast each row of the hash table as a string but i think this way would be cleaner, either that or send the client object instead of the whole hash table.
[Code]...
View 3 Replies
Sep 17, 2010
I've solved part of the problem, but something I've just realised is the information just isn't getting through and EVERY example I find uses a Console type application and what about us people who don't wanna develop a Console application? I don't but nooooo they don't seem to understand that at MS and put one example which uses exactly that.
[Code]...
View 4 Replies
Mar 7, 2011
Basically, I need to transmit data across a network from point A to point B using a Binary Serialization System. I'm doing this to make sure that the system can't have outside listeners read the data being sent easily and to keep results secure and confidential.What is an easy way that I can encrypt, say, a generic object? Would it be easiest to serialize it to file, read the bytes in, encrypt the bytes, then store the bytes in a serialized structure and send that across the stream and reverse the process?
Private Function EncryptClass(ByVal obj As Object) As Byte()
Dim key() As Byte = {52, 15, 85, 150,
45, 12, 78, 120,
[code].....
View 6 Replies
Aug 18, 2009
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:
[Code]...
View 6 Replies
Jun 7, 2010
How can I send and recieve serialized objects over a TCP connection with size and data type values in the header (within array(0) and array(1) values)?I know how to serialize and send the object using BinaryFormatter.Serialize.I dont know how to take the recieved data and put it into an array of bytes().Also - on the receiving end I dont know the size of the object sent therefore I dont know when to stop reading the data stream so I cant use: Dim Obj As ClassName = DirectCast(BinaryFormatter.Deserialize(Stream), ClassName).
View 1 Replies
Jul 17, 2010
I'm trying to send a XML serialized class over a network stream the send is working
Dim IP As Net.IPAddress = System.Net.IPAddress.Parse(IPAddress)
Dim IPE As New Net.IPEndPoint(IP, 10003)
Dim TCPClient As New Net.Sockets.TcpClient
[code].....
View 2 Replies
Feb 15, 2011
I have an .net application with 2 processes, communicating using a network stream.The protocol consists of a set of commands, some with parameters, which are sent through the stream to the server. The server processes the command, and sends a response.
The protocol for one of the commands looks like this:
[code]...
Usually, this works fine. Very rarely (probably once every few millions of calls), The reading side gets the wrong values. I added code to trace the values sent and received. This shows that occasionally, the reading side gets two extra bytes, with the value 0, which was not sent by the writing side. These extra bytes appear in different places, e.g. in one case they were between i1 and i2; in another they were between the first and second byte of s2. Does anyone have any idea where these 2 bytes could come from? I checked my code, and every place that writes to the stream is traced, so it doesn't look like they are actually written to the stream. It might be worth noting that s1 is always 0, in the current implementation.
View 1 Replies
Jan 18, 2006
I have a little Logitech USB Webcam that I have attached to a laptop and I want to be able to view a video stream from it. I already gathered it will need to be a client/server model...and I probably need to use TCP/IP and/or Winsock (if its still even used)...
how to really approach this application as far as the video capture process? I don't have a need to really record video in any way so if i can just "preview" the video thats fine, although recording would be a neat bonus.
I read into the Windows Image Aquisition libraries and they seemed to be the right thing...but I wasn't so sure about the cross-network half of the equation.
View 10 Replies
Jun 1, 2009
I have looked over this and can't see where i'm going wrong, all i'm trying to do is add an item to a listbox when i a tcpclient logs on to the server. Code in question... If i put a breakpoint in i can see that initialclientresponse is set correctly.
Public Sub ConnectClient()
Dim pendingClient As TcpClient
Dim InitialClientResponse As String
[code].....
View 8 Replies
Oct 26, 2009
I am developing an application where in I need to stream audio and video in the local area network. There is calling option from my application where users can call each other(audio call or video call) in the LAN.
View 3 Replies
Oct 12, 2010
I would like to use the USB port power as source and use the an amplifier on D+/D- Twisted Pair signal wires as my command line. I saw a thread suggesting to use the output as PWM. How can I send a single byte or stream of bytes to the port. Is it possible to read status of the D+/D- if they are shorted together?
View 7 Replies
May 17, 2009
I am sending data over a tcp connection but I need send it in pairs for it to be sent i.e. 1st Send (doesnt work), 2nd Send (works), third Send (doesnt work), fourth Send (works)
View 1 Replies
Dec 27, 2009
I noticed when I send bitmap over a stream I have to close the stream where I sent it from in order to get it on the other end. Is there any way I can keep the stream open and send images and strings, or any other way of doing that? [code] 'I have to close the stream or it wont work, but I need to keep it open to send more images!
View 6 Replies
Jun 8, 2011
I'm thinking about how I'm going to connect a computer to a projector and I came to think if it is possible to send a live stream of a computers screen to another computer via for example TCP or some other protocol. It must be possible since for example TeamViewer and other long-distance IT-support applications can do this. The thing is that I dont have a clue about where to start. And is it difficult to output the stream once it's recieved?
[Code]...
View 1 Replies
Jul 14, 2011
I have an application where i have to schedule some msg to my network users and as per the sheduler msg should be popup on their machine on local network.
View 3 Replies
Jun 11, 2012
As discribed on this MSDN pageWhat would be the PHP equivalent? Is it even possible to do the three things listed on that page under remarks Streams involve three fundamental operations:You can read from streams. Reading is the transfer of data from astream into a data structure, such as an array of bytes.You can write to streams. Writing is the transfer of data from a datastructure into a stream.Streams can support seeking. Seeking is the querying and modifying ofthe current position within a stream. Seek capability depends on thekind of backing store a stream has. For example, network streams haveno unified concept of a current position, and therefore typically donot support seeking.
View 2 Replies
May 26, 2010
I have never programmed a network program before and would like to learn at my own pace. Also I am not asking anyone to write this complete program for me, just bits of code to help me write a complete program. (though if you do code it all I won't complain.) I already tried using internet tutorials but none of them seem to work.I am trying to program a simple form with 4 buttons, and 2 users.The first button is a connectivity button. "Green" for connected, "Red" for not.The second button is a "Connect" Button which will connect to another computer with this program installed/active. (I want it as simple as possible)and the next 2 buttons switch between "1" and "0" depending on user input(Default "0"). the first button is the local user button and the second is the remote user button. When the local user clicks the local button then what he/she changes it to will be displayed at the remote site. The same thing will happen with the remote user.
I know how to place all the buttons where they belong, and to change the local text, but I have no Idea how to connect to a remote program or to pass messages between the two users. Can anyone suggest some Simple code to do this. (something that I will be able to learn and use to make more complex code later on.)
View 2 Replies
May 1, 2009
I was wondering if there is an easy and fast way to send an image (or files in general) which is small, as in around 30KB, over the network using VB .NET. the most i was able to do at one point is to read the image (or file) as text, then send each character over the network, but it took way too much time for the file to get sent, and then translated from text to file once again on the other side. I don't know much about network programming, because i just started learning about the subject.
View 3 Replies
Jul 13, 2010
I have a xml file I want to send to a ubuntu server. I have created the xml file using a data table.
Before I was using the following to save on the current machine in the application folder. However, the customer has changed and now wants to store it on a remote network ubuntu server on the network.
What is the best way to send files across the network? Is it possible to send files from a windows machine to a ubuntu server machine?
View 3 Replies
Nov 22, 2009
i want to send Text over network to another pc. The text should be seen in a MessageBox.What technique could i use? Is UDPClient the right thing?
View 1 Replies
Feb 7, 2011
why this code doesn't work:[code]....
View 11 Replies
Mar 1, 2012
I have a problem with the filereader class (i think). My program has server/client interaction and the client reads from a text file, sends the data to the server. The problem is, the client is sending the last line of the text file twice, so for example I use test data in the text file such as:
Test data 1
Test data 2
Test data 3
The server will receive:
Test data 1
Test data 2
Test data 3
Test data 3
Here is my code, I have a feeling it is to do with the filereader.endofstream loop.
Private Sub readLine()
Dim filePath As String = ("D:outputLog.txt")
Dim fileReader As New StreamReader(filePath)
Do
chrMessageToSend = fileReader.ReadLine()
[Code] .....
View 9 Replies
Jun 24, 2011
i am creating a program which scans and saves images. in my program i have the option to save images and with each image i save it gets its own number for example: file1, file2, file3, file4 and so on. the only problem i have is getting the prgram to remember where it left off so it carry's on the number. my understanding is that i need to create some sort of stream writer or file stream class for this proccess to work. so it save's the last image number i was on, and carrys it on next time i open the program up again. and i also need it to re-write the new image number its on for next time. so i need to write and read the text file (.txt) and write it again if you catch my drift? i have a book to help but the wording in it is so confusing at the min, i m lost where to start.
View 1 Replies
May 21, 2012
I am working on an Examination system for a secondary school. The system captures the marks of students of the subjects they take and stores them in the database. from there, it has to compute the grades of marks for each subject that a student takes and get the position of that student in the stream and in the class.
For the gradeing part of it, I have already made it, my problem is to get the positions of students and show them on the rdlc report.
The word class and stream here, I mean;
The school has six classes, senior one/form one TO senior 6/form 6 as classes and each class(form) for example senior one has 4 streams. By streams, I mean; Students are grouped into different streams but under one class(level/form).
for example; form1 A TO Form 1 D that is one class/form secondary level. form 2 also has four streams ( form 2A, 2B, 2C, 2D) and so on. So a student can be number one in his stream but if the marks are compared to other streams of thesame level, he is number 3. it is indicated on the report as Position in Stream 1...........Class 3
View 8 Replies
Apr 1, 2009
I'm trying to set up a CLASS to represent a data stream.This is a newbie question so if the answer is obvious, please excuse me.Several of the data items are multiples which I would normally represent as an Array element.For example, in the code below, the element SolarNameplate has up to 10 instances, so I'd like to use array notation.I get errors, and it doesn't work, so I assume I can't do it like below.
QUESTIONS : 1 - is it possible to use an array element in a class ?
2 - is there another way to achieve what I want ?
Public Class SM1PS01
Private _Projid As String '... name or number of project
Private _LogoFile As String '... file containing customer logo[code]...........
View 18 Replies
Sep 4, 2010
I ahve tried using the
My.Computer.Network.UploadFile("C:UsersPhillipDesktop est.txt", "http://10.0.0.2/c:/text.txt", "my username, "mypassword")
but it does not work...whats the proper format for entering a location to a computer over the network?Also... whats a way to send a file to a computer over the internet such as my friends computer... The reason I am doing this is because I plan to make some programs that run based on text files and a basic example of this is a chat program... but I do plan for other things as well...
EDIT:Used this
My.Computer.Network.UploadFile("C:UsersPhillipDesktop est.txt", "\PHILIPADAMS-PCUSERSPhilip Adams ext.txt", "myusername", "mypass")
and it worked... now how can I send over the internet... Also is there another way i can send over the network like using the IP instead of computer name?Also how do I send it to other computers?
View 5 Replies
Jan 24, 2012
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim FileToCopy As String
Dim NewCopy As String
FileToCopy = "C:Users????DesktopfileName"
NewCopy = "C:Users???Desktop
ewfileName"
[Code]...
View 2 Replies
Mar 7, 2009
I am really new to .net, I've got the basics to a game down, I need to be able to send variable arrays between programs, I am aiming for local network first, then I'll tackle internet. Does .net have any simple way of doing this? Was difficult in vb 6. It needs to be fast so both machines get the same view of the game.
View 5 Replies
