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Questions tagged [udpclient]

UdpClient (System.Net.Sockets.UdpClient) is a .NET-Class allowing to send and receive UDP-Traffic.

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c# udp client receivebtye unreadable

I've created a client which sends the get server list command, but the received bytes isn't readable. Here is my code : byte[] receiveBytes = udp.Receive(ref RemoteIpEndPoint); string[] returnData =…
madman
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Does a "UDP Client For the TIME Service" need to check the length of the read data before converting?

I'm in the middle of of reading Internetworking with TCP/IP Vol III, by Comer. I am looking at a some sample code for a "TIME" client for UDP. The code gets to the point where it does the read of the response, and it takes what should be a 4 bytes…
benc
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receive all udp packets on multicast

i am using the c# UdpClient (client in code) to receive data on a multicast group. In a while loop the follwing happens: while(receiving) //First i check if data is available, polltime = 100ms if(client.Client.Poll(polltime,…
Gobliins
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How does C# UdpClient.Receive work when broadcaster reboots?

I'm writing an application that needs to receive multicast data from a piece of hardware. I have it working fine. Occasionally, outside of the control of my application, the hardware that is broadcasting will reboot. It is my understanding from…
Corey Burnett
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When transmitting data using UDP is it necessary to include the message length as part of the message?

I have a client who is looking to reduce the number of bytes transmitted over the wire to the absolute minimum. When creating a udpClient class and invoking the receive method, a byte array is returned. Currently I'm using receiveBytes.Length to get…
Brian Leeming
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UdpClient can't receive from DatagramSocket

I am making an application. server side works on desktop and client side works on Windows 8 (Metro App- .Net for Windows Store) here is my server code: var udpServer = new UdpClient(7800); udpServer.BeginRecieve(new AsyncCallback(OnUdpRecieve),…
Peyman
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UDP Connection Between Client and Server

Here is the server code of my program this is working, but after it sends data it gets stuck. I need it to be refreshed and ready for sending data again. Server code: private void button1_Click(object sender, EventArgs e) { try { …
user1713389
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java Read file via UDP

I have a UDP server reading images, both UDP and TCP. The protocol format is: length ID payload When I try to read the payload or image itself, I can do it by using a FLAG, but this is not desirable. How can I stop reading the file in UDP (or know…
gogasca
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Fast Way to reserve Ports in VB.NET

I have a need for my application to reserve certain port numbers. All I need to do is reserve them. I don't have to receive messages or anything. What is the fastest and easiest way to do this. I've tried the…
Ian
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UDP Multicast between PC and Android ICS (CSharp vs. Java)

i've got a little problem that causes me serious headaches. I wrote two small programs for UDP communication (each of them receives and sends). Tests so far: - PC sends packet and receives it. - Android sends packet and receives it. After another…
Malte
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Call UdpClient.Send() inside System.Timers.Timer event does not work

in my application I receive an UDP stream and I forward it on two other UDP endpoints. My problem is that I need to put a delay between the two streams, so I thought to use a Timer. This is my code (where I show only the relevant methods): public…
Barzo
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UDP DatagramSocket and Multicast IP

I'm having a bit of an issue here with receiving messages on client: Essentially, I'am able to send a message "Hello world" to the listener, but when the listener tries to send "Reply", the client does not get the message? What do you think I am…
LB.
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Unable to run multiple applications on one PC

I have 3 WPF applications that were running on 3 separate PCs and are communicating using UDP with each other. When I run all them on one PC they cannot share the Port on which they communicate and so crash. Is there a way in which these…
Aashish Thite
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confused about why UDP client server is doing this

Im creating a client-server application using UDP. Before anyone asks why I'm using UDP instead of TCP let me tell answer by stating that its for an assignment. Ok on to the question! I have created a client class that spawns a thread in order to…
Katana24
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How do I send a struct from a UDP client to server?

I'm having some trouble sending a struct of data from a UDP client to a UDP server. I'm not sure what the problem is exactly. I have a source file responsible for setting up a UDP client and defining the function to send data: UDPClient.cpp #include…
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