Introduction
$ sudo apt-get install build-essential libsndfile1-dev libgtk2.0-dev libgtkglext1-dev libasound2-dev Under Mac OS X, first be sure to install Apple’s Xcode package. The easiest way to then ensure you have XRoar’s dependencies available is to use a system like Homebrew or MacPorts. GitHub is home to over 28 million developers working together to host and review code, manage projects, and build software together. The purpose of this network emulator is to test evaluate and debug mesh network protocols how the B.A.T.M.A.N. ADV protocol. This network emulator is a front end for.
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The purpose of this network emulator is to test evaluate and debug mesh network protocols how the B.A.T.M.A.N. ADV protocol.This network emulator is a front end for virtualbox openwrt machines connected trough a vde-switch and wirefilter emulating a wireless link. The front end is writed in python with pygtk gui. The python program monitor the openwrt machines with snmp protocol, showing in the main screen transmited packets for each interface, and originators interfaces for batmam-adv protocol. The vde-switches have tap interfaces connected with the host machine, this permit monitor the packet traffic with the Wire-shark program, the eth0 interface of the openwrt machines are connected to the host via the vboxnet interface of the host, in this way is possible to access to the openwrt console for management purpose.The mesh is integrate with nodes and wireless connection. Each node diagram is show in the folowing figure.
Architecture
The architecture is basically compound of two elements Nodos and Links (Wirefilter) as shown in the figure 1.
Figure 1
The nodos are shown in figure 2 this are more complex and have the folowing elements:
- OpenWrt, kamikaze trunk version for x86 with minimal modifications (see below)
- VirtualBox (unmodified) the version must suport vde-switch.
- Vde_switch must run two instance for nodo to support 2.4 GHz and 5.0 GHz networks. The vde-switch have a patch colorfull see below.
Figure 2
##OpenWrtA standard OpenWrt can be downloaded and configured for X86. Once that virtual machine is runining some packages must be download (ip, snmpd, tcpdump, netcat, kmod-batman-adv, batctl).
The file /etc/config/network must be set in the following form:
For an automatic configuration of the network interfaces devices setup on boot must be use the following script and save it as './files/etc/rc.local' in your local OpenWrt build directory):

In virtualBox is difficult to pas the IP address for the interfaces this is accomplished setting the mac address in VirtualBox and int the 'rc.local' script read the mac address and set the ip in the interfaces.
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####SNMPD
When the snmpd is installed in the openwrt machine is nedded to setup the MIB for batman-adv.To add custom records to the batman-adv MIB a series of shell script was conducted running and returning to stdout what it takes SNMP.To request originators table the next script was made:Script name batctl_o.sh (for originator list)
Script name batctl_n.sh (for next hope list)
Script name batctl_tg.sh (for the global translation table)
Then add entries in the configuration file SNMPD /etc/snmp/snmpd.conf using the command uci in a terminal.

To the files /etc/snmp/snmp.conf append the following lines.
From the host the snmp can be tested with the followings commands.
In the Git Hub repository there are a fully configurated virtual machine.Download openwrt.ova in VirtualBox go to File menu -> Import Appliance
####Ip assignations in openwrt.
For assign the ip address to the VM first is assigned the MAC address to the VM. Each VM have three interfaces nic1, nic2 and nic3 this interfaces in the openwrt appear as eth0, eth1 and eth2.
- nic1 (eth0) mac 80:01:00:00:07 + nodenumber(nn).
- nic2 (eth1) mac 80:02:00:00:07 + nodenumber(nn). the number 2 for 2.4GHz)
- nic3 (eth2) mac 80:05:00:00:07 + nodenumber(nn). the number 5 for 5.0GHz)
For configure the VM with this mac address the following commands are used:
Where:
- nn Node number
The script in the openwrt in /etc/rc.local read the mac address of the interface eth1 and configure the ip of the interfaces:
- eth0 192.168.100.nn
- bat0 192.168.7.nn
and the mac address of bat0 = 90:nn:nn:nn:nn:nn
Whit this convention of IP and MAC address is easy to follow the packets trough the nodes.
With the eth0 interface is possible to access to the nodes via ssh to the ip address 192.168.100.nn.The host have the vboxnet0 interface with the ip address 192.168.100.1.
Each vde-switch have a tap interface through the wireshark can sniff the packets that transverse the vde-switch.
##VirtualBox
The VirtualBox version must by 4.3 or higher.To verify VDE-Switch support in the network windows select in Attached to: 'Generic Driver' in the Name: box verify that exist VDE.The configuration of the virtual machines openwrt is made trough console with the VBoxManage command.
##vde_switchThe main advantage of vde_switch over uml_switch is that any clients can be attached to this virtual switch: VirtualBox, UML, tap interfaces, virtual interconnections, and not just UML instances.
If the vde_switches were just connected with wirefilter 'patch cables' without modification, we would end up creating a broadcast domain and switch loops which we don't want: The goal is to allow the packets to travel only from one host to it's neighbor, not farther.

To accomplish this, the vde_switch needs to be modified to have 'coloured' ports. The idea is:
- each port has a 'colour' (an integer number)
- packets are only passed from ports to others with DIFFERENT colours.
- packets are dropped on outgoing ports if it has the SAME colour (same number) as the incoming port.
In this concept, the host port can have colour 1 the TAP port colour 2, while the interconnection ports have colour 0. In this way, packets can only travel from the host to (all of) the interconnection ports, or from one interconnection port to the host port. However packets can not travel between the interconnection ports, thus only allowing 'one hop' connections and avoiding switch loops and shared broadcast domains. The concept is illustrated in figure 2.The patch against vde2-2.3.2 (current latest stable version) to add this colour patch can be find here:vde2-2.3.2_colour.patch
The vde-switch parched can be download from here. Attention this version can be old!
##wirefilter
The wirefilter program is a tool where its posiblen simulate various link defects and limits:
- packet loss
- burst loss
- delay
- duplicates
- bandwidth
- Interface speed
- Chanel capacity
- noise (damage to packets)
- mtu
However as the links are only set up bidirectional, interferences can unfortunately not be simulated with this system.
For advanced testing it might be necessary to apply the aforementioned link defects to some packets only whereas other packets are able to traverse the emulated environment unharmed. Once you applied the 'ethertype' patch you can specify an ethertype which wirefilter will simply forward. To apply a packet loss of 50% to all packets except batman-adv packets, run:
This patch also allows to filter batman-adv packet types. To apply a packet loss of 50% to all packets except batman-adv ICMP packets, run:
You can specify up to 10 packet types (separated by colon). The patch against vde2-2.3.1 (current latest stable version) can be found here:
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The authors of Dev C++ are Colin Lapace, Mike Berg, and Hongli Lai. The source code developer and contributor are Mingw, Mumit Khan, Jan Jaap van der Heidjen, Colin Hendrix and GNU coders. The dev cpp 4.9.9.2 is the compiler which is used for the compilation of the c and c++ programs. This is the software application tool which is used for the compilation of the c, c++ code. This will check the code and compile the program and simply gave the output of the code in the form which the user defined in the code. Devcpp 4.9.9.2 setup free download dev cpp 4.9.9.2 is generally used for the small purpose programs and small projects of the c and c++ languages of the computer.
You can also get Visual Studio 2012.
This is the lightweight and simple user interface compiler for C and C++ programs to compile. It is an old compiler but still, it is used in the educational institutes only because it is simple and good for the starters. This is integrated development environment developed by BloodShed software. This was basically developed for the Windows 95, Windows 98, Windows NT, Windows 2000 and Windows XP. There are many other compiler IDE which can also use instead of this but they all are not a lightweight application. Like Microsoft Visual Studio.
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We mentioned all latest new features of Dev C++ below.
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- The latest version of Dev C++ 5.9.2 is released.
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Technical Setup Details
| Title: | Dev C++ Free Download |
|---|---|
| Setup File Name: | devcpp-4.9.9.2_setup.exe |
| File Size: | 8.89 MB |
| Compatibility: | 64-bit (x64) and 32-bit (x86) |
| Setup Type: | Offline Installer |
| File Type: | .exe |
| License Type: | Commercial Trial |
| Developers: | Homepage |
System Requirements For Installation
Have a look, at the system requirements before downloading the Dev C++ Free Download trial version offline installer setup so that either they satisfy your computer system or not.
Operating System: Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10, MAC.
System RAM: 2.00 GB
Processor: Intel Core 2 Duo.
System Hard Disk: 1.00 GB
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