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BlubbFish 2026-08-03 10:30:29 +02:00
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5
.gitignore vendored Normal file
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BroadcastReciever/obj
BroadcastReciever/bin
BroadcastSender/bin
BroadcastSender/obj
.vs

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Broadcast-Test.sln Normal file
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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 16
VisualStudioVersion = 16.0.31112.23
MinimumVisualStudioVersion = 10.0.40219.1
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BroadcastReciever", "BroadcastReciever\BroadcastReciever.csproj", "{F1563BFC-C69B-48EF-87B9-F3A1C53EE230}"
EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Utils", "..\Utils\Utils\Utils\Utils.csproj", "{84041817-4DEE-43F9-BC28-D92F1430FCA7}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BroadcastSender", "BroadcastSender\BroadcastSender.csproj", "{E154AD71-176A-4A0E-9C42-EA944E088985}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{F1563BFC-C69B-48EF-87B9-F3A1C53EE230}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{F1563BFC-C69B-48EF-87B9-F3A1C53EE230}.Debug|Any CPU.Build.0 = Debug|Any CPU
{F1563BFC-C69B-48EF-87B9-F3A1C53EE230}.Release|Any CPU.ActiveCfg = Release|Any CPU
{F1563BFC-C69B-48EF-87B9-F3A1C53EE230}.Release|Any CPU.Build.0 = Release|Any CPU
{84041817-4DEE-43F9-BC28-D92F1430FCA7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{84041817-4DEE-43F9-BC28-D92F1430FCA7}.Debug|Any CPU.Build.0 = Debug|Any CPU
{84041817-4DEE-43F9-BC28-D92F1430FCA7}.Release|Any CPU.ActiveCfg = Release|Any CPU
{84041817-4DEE-43F9-BC28-D92F1430FCA7}.Release|Any CPU.Build.0 = Release|Any CPU
{E154AD71-176A-4A0E-9C42-EA944E088985}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{E154AD71-176A-4A0E-9C42-EA944E088985}.Debug|Any CPU.Build.0 = Debug|Any CPU
{E154AD71-176A-4A0E-9C42-EA944E088985}.Release|Any CPU.ActiveCfg = Release|Any CPU
{E154AD71-176A-4A0E-9C42-EA944E088985}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {B7DF5524-371E-42E4-88F1-63331B4B32FC}
EndGlobalSection
EndGlobal

12
BroadcastReciever/BroadcastReciever.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\..\Utils\Utils\Utils\Utils.csproj" />
</ItemGroup>
</Project>

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BroadcastReciever/Program.cs Normal file
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using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
using System.Text;
using BlubbFish.Utils;
namespace BroadcastReciever {
class Program {
private readonly IPAddress s_mcastAddress;
private readonly Int32 s_mcastPort;
private Socket s_mcastSocket;
private MulticastOption s_mcastOption;
public Program(String[] args) {
CmdArgs.Instance.SetArguments(new Dictionary<String, CmdArgs.VaildArguments>() {
{ "adapter", new CmdArgs.VaildArguments(CmdArgs.ArgLength.Touple, true) },
{ "multicast", new CmdArgs.VaildArguments(CmdArgs.ArgLength.Touple, false, "224.0.24.1") }
}, args);
if(!CmdArgs.Instance.HasAllRequiredArguments()) {
Console.Error.WriteLine(CmdArgs.Instance.GetUsageList("BroadcastReciever.exe"));
_ = Console.ReadLine();
return;
}
this.s_mcastAddress = IPAddress.Parse(CmdArgs.Instance.GetArgumentData("multicast"));
this.s_mcastPort = 11000;
// Start a multicast group.
this.StartMulticast();
// Display MulticastOption properties.
this.MulticastOptionProperties();
// Receive broadcast messages.
this.ReceiveBroadcastMessages();
}
private void StartMulticast() {
try {
this.s_mcastSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPAddress localIPAddr = IPAddress.Parse(CmdArgs.Instance.GetArgumentData("adapter"));
//IPAddress localIP = IPAddress.Any;
EndPoint localEP = new IPEndPoint(localIPAddr, this.s_mcastPort);
this.s_mcastSocket.Bind(localEP);
// Define a MulticastOption object specifying the multicast group
// address and the local IPAddress.
// The multicast group address is the same as the address used by the server.
this.s_mcastOption = new MulticastOption(this.s_mcastAddress, localIPAddr);
this.s_mcastSocket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, this.s_mcastOption);
} catch(Exception e) {
Console.WriteLine(e.ToString());
_ = Console.ReadLine();
return;
}
}
private void MulticastOptionProperties() {
Console.WriteLine("Current multicast group is: " + this.s_mcastOption.Group);
Console.WriteLine("Current multicast local address is: " + this.s_mcastOption.LocalAddress);
}
private void ReceiveBroadcastMessages() {
Boolean done = false;
Byte[] bytes = new Byte[100];
IPEndPoint groupEP = new(this.s_mcastAddress, this.s_mcastPort);
EndPoint remoteEP = new IPEndPoint(IPAddress.Any, 0);
try {
Console.WriteLine("Waiting for multicast packets.......");
Console.WriteLine("Enter ^C to terminate.");
while(!done) {
Int32 length = this.s_mcastSocket.ReceiveFrom(bytes, ref remoteEP);
Console.WriteLine("Received broadcast from \"{0}\" [{1}]: {2}", groupEP.ToString(), length, Encoding.ASCII.GetString(bytes, 0, bytes.Length));
}
this.s_mcastSocket.Close();
} catch(Exception e) {
Console.WriteLine(e.ToString());
_ = Console.ReadLine();
return;
}
}
static void Main(String[] args) => _ = new Program(args);
}
}

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BroadcastSender/BroadcastSender.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\..\Utils\Utils\Utils\Utils.csproj" />
</ItemGroup>
</Project>

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BroadcastSender/Program.cs Normal file
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using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using BlubbFish.Utils;
namespace BroadcastSender {
class Program {
private readonly IPAddress s_mcastAddress;
private readonly Int32 s_mcastPort;
private Socket s_mcastSocket;
private MulticastOption s_mcastOption;
public Program(String[] args) {
CmdArgs.Instance.SetArguments(new Dictionary<String, CmdArgs.VaildArguments>() {
{ "adapter", new CmdArgs.VaildArguments(CmdArgs.ArgLength.Touple, true) },
{ "multicast", new CmdArgs.VaildArguments(CmdArgs.ArgLength.Touple, false, "224.0.24.1") },
{ "count", new CmdArgs.VaildArguments(CmdArgs.ArgLength.Touple, false, "100") },
{ "wait", new CmdArgs.VaildArguments(CmdArgs.ArgLength.Touple, false, "500") }
}, args);
if(!CmdArgs.Instance.HasAllRequiredArguments()) {
Console.Error.WriteLine(CmdArgs.Instance.GetUsageList("BroadcastReciever.exe"));
_ = Console.ReadLine();
return;
}
// Initialize the multicast address group and multicast port.
// Both address and port are selected from the allowed sets as
// defined in the related RFC documents. These are the same
// as the values used by the sender.
this.s_mcastAddress = IPAddress.Parse(CmdArgs.Instance.GetArgumentData("multicast"));
this.s_mcastPort = 11000;
// Join the listener multicast group.
this.JoinMulticastGroup();
// Display MulticastOption properties.
this.MulticastOptionProperties();
// Broadcast the message to the listener.
this.BroadcastMessage("Hello multicast listener.");
}
void JoinMulticastGroup() {
try {
// Create a multicast socket.
this.s_mcastSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp) {
Ttl = 32
};
// Get the local IP address used by the listener and the sender to
// exchange multicast messages.
IPAddress localIPAddr = IPAddress.Parse(CmdArgs.Instance.GetArgumentData("adapter"));
// Create an IPEndPoint object.
// Bind this endpoint to the multicast socket.
this.s_mcastSocket.Bind(new IPEndPoint(localIPAddr, 0));
// Define a MulticastOption object specifying the multicast group
// address and the local IP address.
// The multicast group address is the same as the address used by the listener.
this.s_mcastOption = new MulticastOption(this.s_mcastAddress, localIPAddr);
this.s_mcastSocket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, this.s_mcastOption);
this.s_mcastSocket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive, 64);
} catch(Exception e) {
Console.WriteLine("\n" + e.ToString());
_ = Console.ReadLine();
return;
}
}
void BroadcastMessage(String message) {
IPEndPoint endPoint;
try {
//Send multicast packets to the listener.
for(Int32 i = 0; i < Int32.Parse(CmdArgs.Instance.GetArgumentData("count")); i++) {
endPoint = new IPEndPoint(this.s_mcastAddress, this.s_mcastPort);
_ = this.s_mcastSocket.SendTo(Encoding.ASCII.GetBytes(message+" "+i), endPoint);
Console.WriteLine("Multicast data sent "+i+".....");
Thread.Sleep(Int32.Parse(CmdArgs.Instance.GetArgumentData("wait")));
}
} catch(Exception e) {
Console.WriteLine("\n" + e.ToString());
_ = Console.ReadLine();
return;
}
this.s_mcastSocket.Close();
}
private void MulticastOptionProperties() {
Console.WriteLine("Current multicast group is: " + this.s_mcastOption.Group);
Console.WriteLine("Current multicast local address is: " + this.s_mcastOption.LocalAddress);
Console.WriteLine("Current multicast ttl: " + this.s_mcastSocket.GetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive));
Console.WriteLine("Current ttl: " + this.s_mcastSocket.Ttl);
}
static void Main(String[] args) => _ = new Program(args);
}
}