[tcp-udp] Forum Topics

Hi, I am having problems with TCPIP coding on VB6. I have a timer which checks for connection. This timer is set to a minute.Everytime the timer code executes the entire application freezes. It performs normally after the connection checking loop. One last thing to mention is I am connected …

I have heard about WireShark software that what can it do. But it snif only my lan card. What if i wanted to snif the router that what other computers on the network are doing? Is there any way to do that?

Iv been given an assignment to discuss in a brief essay 'Networking,protocols and packet switching...please help

Hi I need to connect to Telnet server for my university studies at the University of Birmingham but everytime I try to connect I get : "could not connect to the host on port 23". What can I do ? I know there have been other replies about a similar …

i need to implement and test any of the distributed algorithms in two **linux** running systems above which runs the UDP protocol. how can i proceed with this? What programming language will be easier to implement? i have done C,C++ and a little of java programming in the past.

**I have hosted a xbtit tracker on a VPS server.I have uploaded a file and my friend who is on may LAN had downloaded it.But while he was downloading he did not get LAN speed which he was supposed to get.In the Peer instead of his LAN IP his Public …

This one is general question.. **Is it possible to hde ip address?** Well, there are many softwares available such as iphider, Hide-Platinum, etc. Will they really help in hiding the ip address. **Also, will using a proxy ip helps in hiding the original ip address?**

Hello, I have made android application which provides remote desktop administration, I used port 5556 and socket programming TCP. I have to forward this port from router on every computer is there any other way so I can use some open port to communication with android device?? Like TeamViewer doesn't …

I can't access my web site or host provider. When I did a TraceRoute the results where; Tracing route to <domain> over a maxiumum of 30 hops 1 General Failre Can this be resolved, it can it be put out, as in trying to accesses my web site for up …

Suppose I have a set of machines whose ip addresses are changing, say every 10 mins, then before making the tcp connect call (from a client) how do I make sure all the switches and routers have updated their mac Address and Ip Address mapping correctly and that it is …

If I wanted to host a game on let's say, Steam Counter-Strike, what setting to I need t use for port forwarding to let someone I know login using my routers IP address. I options are TCP/UDP, TCP, & UDP. Also, what should be my starting and ending ports? Thanks.

I have an address of 10.--.204.0 at my network. Could you help by telling me how one would go about adding more ip's than the 254 I currently have available? I also have a .205 but this is used or just managment and is routed to its own server. It …

I really couldn't see what area of the forum to post this in so this is where I thought it might best go. MODs, move it to the appropriate forum area if there is a better place for it please. Was watching Wire Shark processing my LAN card while I'm …

I'm new to networking and right now I was messing around in packet tracer, but I'm having trouble with the scenario I created. I will upload a couple of screenshots i've taken of my situation and I will proceed to explain my problem and what im trying to achieve. I …

hello, Tcll here (havn't been able to login, I'm on wii) ^ can repeatedly click the "member login", it does nothing. before I get into detail with my current situation, let me explain what led up to this. you may, or may not have heard of this before, but I …

Hello! I'm trying to code a C# server for flash apps, and I'm currently working on a broadcast function. When flash clients connect to the server they are added to the connClients list (List<TcpClient>), and with the following function I send the stuff to my flash apps: [CODE] public void …

Hello I want to know how windows TCP scaling works.I know it performs left shift operation but If we do that wont our data will be lost.

Hello, anyone can help me create a .bat file, which will need to copy a .fdb file from a shared folder on one computer to another share on another pc over my LAN network? The .bat needs to be scheduled as well, is it best to use the windows 7 …

Hello Daniweb, Well... my PDU exploded the other day with a bang and a white flash, took out my entire rack and tripped the main breakers, so since I need to replace this anyway I was thinking of re-designing my home network. At the moment I have two physical servers …

My DSL connection failed. They reset it, but now the router no longer works. The DSL works if I plug one computer into the modem. The ATT man told me I have to bypass the PPPOE in the router to make it work. How do I do this? I have …

Friends, I Want to Check How Much PC's Are Connected On My LAN, and also if I Call The Database From Server PC to Client PC Then What Should be The Connection String, Please Suggest Me.............

I have a Dell PowerEdge 2900 running Server 2008 R2, fully updated. The server has two GigE ports, one is conencted to the modem and was given an IP by my ISP. The other is set to distribute IPs with DHCP to connected clients. I have the DHCP and RRAS …

Hi guys, As you know the Internet divided into private network and public network, the public IP which include to public network is accessible and private IP which include to private network is inaccessible due to Internet network. So, I decided to use one of public servers have windows servers …

so i created a client server program using tcp that works fine. but now i want to use broadcasting (which uses udp) so i'm changing to change my code but i keep running into problems. when i run my code the error message "ERROR binding: 10047" and that error means …

Hello everybody, Im using datagrams to send a DatagramPacket, however, unless the router has ports forwarded, the clients dont recieve the packets. Is there a way to set this up so that my clients dont have to port forward on their router? How to main stream gams like LOL or …

Hi there, I was wondering if anyone could help me, I’m trying to send various packets of data over network via UDP. I’m using the sendto() function in winsock2. I’m trying to send different data types over UDP, for example; I have positional data such as: int time; float LAT; …

Is TCP/IP protocol set of all the devices like Windows,Mobiles,Linux,Unix,MAC OS same?identical? I mean is the TCP/IP protocol's source code in each OS same?no changes at all? 2. If we connect different types of PC running different OSs like, Linux,Mac,Windows or mobiles that run Symbina,Andorid,Java OS etc..(let's assume phones can …

Hi there, quick question. Say my laptop is connected to a wireless network, and I then decide to plug the wire in, does the wired connection takes over? In other words with both the wireless and the wired cable connected, which one take precedence? thanks

Hi, I need just simple help. Could you just give me a tip for some good TCP server/client library for Csharp? It should be easy to use, and can handle big data size. Because I was using a Netcomm library, and while sending Image bytes, It has god frozen. Thanks …

Guys, I really need to know something about IP addresses that use for computers in a LAN and Proxy server. There is a large network in my company and the computers on the network have been assigned IP addresses within the range 10.20.70.0 - 254 (255.255.255.0 - network mask). However, …

Hi everyone...im doing final year project for the coming semester. so what i need is that a suitable title for my final year project.im doing degree in computer science with majoring networking. im interested in network programming which uses TCP IP. So any title regarding this field guys??? Thanks, regards …

Hi there! i have a server 2008 installed and connected al the client to the server but the clients could not browse the internet, I dont really understand why... guys help me out

**edit** I just realized that Im on a single core machine atm (stupid work machine), so theortically the server isint actually executing on the CPU 50% of the time (while the client is running), so packets would be lost right? Or is there something else im missing alltogether? Ill post …

Hi every one . I have a question , now when the TCP persistent timer times out , a probe is sent , Does this probe conatin any application layer data ?? or why its never acked ? and the sequence number used is it differentt from the one used …

i rly dont know how to fix this problem,i have Both connection in my Dorm, Lan & wireless when i try to connect to lan i have coonection and the skype and all other msg are working but i cant access to web pages in IExplorer or chrome but when …

during installing router what networking components are needed in the internet protocol (tcp/ip) properties setup

Hi all I have a client program about send and recieve file on LAN Network between 2 PC, but it get an error below: "Cross-thread operation not valid: Control 'Client' accessed from a thread other than the thread it was created on" in function SaveFile in line "if (saveFileDialog1.ShowDialog(this) == …

HI. I need clarifications coz im confused. In the public IP address, the classes. which is correct: Class A: **1.0.0.0 to 126.0.0.0** or Class A: **1.0.0.0 to 126.255.255.0** Class B: **128.0.0.0 to 191.0.0.0** or Class B: **128.0.0.0 to 191.255.255.0** Class C: **192.0.0.0 to 223.0.0.0** or Class C: **192.0.0.0 to 223.255.255.0** …

hi my goal is access a webpage (Jsp) which is running on my home pc from outside the world. for the above mention reason i followed below step but i m unable to access from my office/other network 1. registered with no-ip <br /> Hostname:callto.redirectme.net Host Type: Port 80 IP …

I have made a chat client using TCPListener for server and TCPClient for client it works perfectly fine on localhost. However it is unable to send message over a ad-hoc network. I have tried everything i can think of. 1.Firewalls allow the application to run on both computers. 2.Even disabling …

Hello everyone, I need little help with TCP connection for one gaming server, so basically gaming server is shell and has configs to make it using remote by connecting on 3443 port but with USERNAME and PASSWORD. Is there any possible way to do it? And if it is would …

So, I have just started with C++ Sockets. Got the program to get headers from various servers just right today, and am aiming to make an IRC bot in under a month to perfect those basics. In the long term(less than an year), I am aiming to make a P2P …

i am trying to make a program where i have a server with multiple clients, where a client sends a message to the server and when the server replies to it, the server broadcasts the reply to all the clients. the code has some error and is not working. i …

Hi guys I just want to ask how to do this: "The distribution switch is connected by trunk links to the access switches." I included the whole Phase 2 instructions so you can better understand what I am trying to do. I've done all that's in this list already except …

If IPCONFIG givest an error: "An internal error occured: The request is not supported. Please contact Microsoft Product Support Services for further help. Additional information: Unable to query routing information" You need to copy a clean TCPIP.SYS file from another PC to the \windows\system32\drivers directory and reboot.

how to convert from UDP to TCP? For example I'm used this code for UDP: Socket peer1 = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); UnicodeEncoding coding = new UnicodeEncoding(); byte[] pp = coding.GetBytes(ping); peer1.SendTo(pp, receiverIp); peer1.SendTo(txtBuf, txtBuf.Length, SocketFlags.None, receiverIp); How to write it use TCP protocol??? Because my code is large, I …

I have some things to ask What is this `Time_wait,Established` under the STATE part after typing 'netat' ? And why are there 'two' Local IP addresses ? Isn't my local computer supposed to habe one IP address only? << This is the biggest question. thanks

hello im sending UDP packet with speed(100Mbps) so when i tested on my pc 127.0.0.1 not received all packets ,,,,i said may be for buffer size ...i define buffer size as size of packet from 64 to 1500 byte ,,,,,why the all packets can not received?? please help me

Do phones,Apple Mac, PC follow the same TCP/IP protocol set? can we connect all of them to a single switch? let's assume phone also has a Ethernet port to connect to switch

Hi, I am developing a critical program for a company. I am not cheking the data which come from socket because I am not using UDP on my program. But can someone tell me please if TCP is exactly %100 secure for data verification. Some cheking algortihms works propely but …