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Merge pull request #7 from groupmsl/master
Change multicast address and port
2 parents caf4fe1 + e27b44f commit f13eb01

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‎README.md

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@@ -16,8 +16,6 @@ On the sending host you'll see output like this (option 1):
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![sending data](https://github.com/enclave-networks/multicast-test/raw/master/sending.png)
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By default, the tool uses multicast stream IP address 239.0.1.2 with port 20480. Pull requests to enable customisation are welcome.
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![receiving data](https://github.com/enclave-networks/multicast-test/raw/master/receiving.png)
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See also the [Singlewire Multicast Testing Tool](https://support.singlewire.com/s/software-downloads/a17C0000008Dg7AIAS/ictestermulticastzip) discussed [here](https://salmannaqvi.com/2016/11/14/simple-multicast-testing-tool-for-windows/) by Salman Naqvi – 2 x CCIE. The Singlewire tool is perfectly adequate if you have a single network interface, but if you're working on systems with multiple network interfaces, this version should be quite useful.

‎multicast-test/Program.cs

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Original file line numberDiff line numberDiff line change
@@ -1,20 +1,16 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net;
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using System.Net;
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using System.Net.NetworkInformation;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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namespace multicast_test
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{
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public class Program
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{
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public static void Main(string[] args)
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{
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Console.WriteLine("Westgate Cyber Security - Simple Multicast Testing Tool");
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Console.WriteLine("=======================================================\n");
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Console.WriteLine("enclave.io - Simple Multicast Testing Tool");
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Console.WriteLine("==========================================\n");
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Console.WriteLine("Interface list:\n");
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Console.WriteLine($" 0: {"0.0.0.0",-40} Any");
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@@ -53,6 +49,47 @@ public static void Main(string[] args)
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}
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}
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// prompt to select a multicast address
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Console.WriteLine();
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while (true)
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{
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Console.Write($"Enter multicast address (224.0.0.0 to 239.255.255.255) to use [default: {MulticastAddress}]: ");
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string enteredMc = Console.ReadLine();
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if(enteredMc == null || enteredMc == string.Empty) break; // Use default multicast address
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if(IPAddress.TryParse(enteredMc, out IPAddress multicastAddress))
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{
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if(IsMulticast(multicastAddress))
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{
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MulticastAddress = multicastAddress;
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break;
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}
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Console.WriteLine("A multicast IP addresses must be between 224.0.0.0 to 239.255.255.255.");
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continue;
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}
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Console.WriteLine("Not a valid IP address");
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}
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// prompt to select a multicast port
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Console.WriteLine();
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while (true)
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{
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Console.Write($"Enter multicast port to use (between 1 and 65535) [default: {MulticastPort}]: ");
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string enteredPortString = Console.ReadLine();
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if(string.IsNullOrEmpty(enteredPortString)) break; // Use default port
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if(!int.TryParse(enteredPortString, out int enteredPort))
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{
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Console.WriteLine("Not a valid number");
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continue;
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}
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if(enteredPort < 0 || enteredPort > 65535)
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{
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Console.WriteLine("Port must be between 1 and 65535");
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continue;
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}
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MulticastPort = enteredPort;
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break;
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}
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// reset selection variable
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selection = -1;
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var receiveThread = new Thread(Receive);
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receiveThread.Start();
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Console.WriteLine($"\nBound udp listener on {_bindingAddress}. Joined multicast group {MulticastAddress}. Waiting to receive data...\n");
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Console.WriteLine($"\nBound udp listener on {_bindingAddress}. Joined multicast group {MulticastAddress}. Port {MulticastPort}. Waiting to receive data...\n");
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}
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public static void Receive()
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client.Send(data, data.Length, ipEndPoint);
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}
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private static bool IsMulticast(IPAddress ipAddress)
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{
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byte addressFirstOctet = ipAddress.GetAddressBytes()[0];
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return addressFirstOctet >= 224 && addressFirstOctet <= 239;
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}
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private static IPAddress _bindingAddress;
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private static readonly IPAddress MulticastAddress = IPAddress.Parse("239.0.1.2");
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private static IPAddress MulticastAddress = IPAddress.Parse("239.0.1.2");
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private const int MulticastPort = 20480;
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private static int MulticastPort = 20480;
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private static readonly Dictionary<int, IPAddress> AddressDictionary = new Dictionary<int, IPAddress>();
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‎multicast-test/Properties/AssemblyInfo.cs

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This file was deleted.

‎multicast-test/multicast-test.csproj

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{2FD990DB-29FA-42FE-872A-76B5BC6F2132}</ProjectGuid>
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<OutputType>Exe</OutputType>
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<TargetFramework>net8.0</TargetFramework>
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<RootNamespace>multicast_test</RootNamespace>
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<AssemblyName>multicast-test</AssemblyName>
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<TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
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<FileAlignment>512</FileAlignment>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>disable</Nullable>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup>
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<ApplicationIcon>favicon-circle.ico</ApplicationIcon>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="System" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="Program.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<ItemGroup>
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<Content Include="favicon-circle.ico" />
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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</Project>
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</Project>

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