I am tasked with writing unit tests for a suite of networked software written in python. Writing units for message builders and other static methods is very simple, but I've hit a wall when it comes to writing a tests for network looped threads. For example: The server it connects to could be on any port, and I want to be able to test t...
For some specific networking tests, I've created a VLAN device, eth1.900, and a couple of aliases, eth1.900:1 and eth1.900.2. eth1.900 Link encap:Ethernet HWaddr 00:18:E7:17:2F:13 inet addr:1.0.1.120 Bcast:1.0.1.255 Mask:255.255.255.0 eth1.900:1 Link encap:Ethernet HWaddr 00:18:E7:17:2F:13 inet...
these days I'm interested to join an open source p2p file sharing project. my knowledge about the topic is not so specific, I mean I know things about security, networking, p2p basics but I still feel lost as to where to begin to get the big picture and practical details in the same time. in short what are the recommended resources? righ...
Hi, I have a question about QT & network sockets. If I have a computer with multiple IP-Adresses in different networks, how do I open an udp socket for a multicastgroup on a specific network-adapter/ip adress. eg: ip: 192.168.2.1 and 172.20.0.1 and I want to create a socket that receives packets from the multicast group 228.5.6.7 on th...
This only needs to work on a single subnet and is not for malicious use. I have a load testing tool written in Python that basically blasts HTTP requests at a URL. I need to run performance tests against an IP-based load balancer, so the requests must come from a range of IP's. Most commercial performance tools provide this function...
I am programmer with a games and 3D graphics background and at the moment I would like to brush up on my networking and web development skills. I have a task that I would like to accomplish to do this. My idea is that I would like to be able to send a HTTP request or something similar to my webserver, which runs a LAMP based setup. I wo...
This topic resembles this thread I'm rather new to the topic of network programming, never having done anything but basic TCP/UDP on a single local machine. Now I'm developing an application that will need P2P network support. More specifically I will need the application to connnect and communicate across the internet preferably withou...
I need to speed up transfers across my gigabit ethernet connection. Right now, I'm doing something almost exactly like this, but I'm only seeing about 40% of that when I run this code below. I also ran this script on all of my (Mac Pro) machines before testing #!/bin/bash sudo sysctl -w net.inet.tcp.win_scale_factor=8 sudo sysctl -w ...
I think that detection of source/destination mac addresses of a packet is done after NF_IP_POST_ROUTING step of Netfilter. Is it possible to hook the packet after this step with correct mac addrs? I want to decide about the out-going packet from my NIC to another to drop/accept packet. In another way, it is like to a firewall rule on mac...
Something which doesn't rely on native libraries would be even more better. ...
I am trying to verify if a directory exists prior to moving a file in Korn, using the classic: if [[ -d ${dir} ]]; then scp file else exit 12 fi My Problem: That the directory is on another server, so whenever I check, the script can't find it and therefore fails and exits every time. My Question: Is ther...
In short: How to reliably discover a server running somewhere on a (presumably multi-segmented) local area network with zero client configuration My client application has to locate the server application without knowing the server IP address. It has to work on a local LAN that may be split into segments with hubs or other switching dev...
Hi, There used to be a HOSTS file on S60 3rd edition devices (see here). It was a great feature for QA. Anyone knows if there's such a file on S60 5th edition devices? Is there another way to tell the phone to go to a specific IP, given a host name? Many thanks, Ori ...
Some games today use a network system that transmits messages over UDP, and ensures that the messages are reliable and ordered. For example, RakNet is a popular game network engine. It uses only UDP for its connections, and has a whole system to ensure that packets can be reliable and ordered if you so choose. My basic question is, wha...
Hello, We are developing a file system for Windows using IFS Kit. We started to investigate a performance problem which caused our file system I/O to be much slower when shared over the network. After looking at it with FileMon and TCPView from Sysinternals we found out that if a NTFS/FAT was shared, the SMB client and server were trans...
I want to block access of my site from one particular IP address, how can i do that.? using htaccess or ? ...
Is there a way to display or log verbose communication DURING a remote service call with flex? In particular is there a way to get very detailed information about the service call while it is happening. Kind of like tracing HTTP headers from a command line. Basically, getting insight into the server transaction before the result or fault...
Hi there I am currently trying to write a network monitoring software for windows mobile 6. I googled a lot and some people say that it is not possible to use a NDIS driver or WinPcap or so for monitoring any network interface. Others say that it is possible. Fact is, that I found no exaples, nor any sourcecode on the net. Therefore I...
Hi Guys, Many of us must have done a Man-in-the-middle (MITM) attack on their internal networks- nothing serious, just for learning :) Now there are a number of protocol vulnerabilities which make MITM possible - ARP Poison Routing, STP Claiming Root Role dual home, HSRP active router... There are also a large number of network securi...
Whenever I use 'ab' to benchmark a web server, it will freeze for a while after having sent lots of requests, only to continue after 20 seconds or so. Consider the following HTTP server simulator, written in Ruby: require 'socket' RESPONSE = "HTTP/1.1 200 OK\r\n" + "Connection: close\r\n" + "\r\n" + "\...