So I have searched a lot of areas for this answer and I am confused on what this error is doing. Whenever I press the start server button...
...I get this error "An unhandled exception of type 'System.Net.Sockets.SocketException' occurred in System.dll"
My code is quite long but I have no clue what to do...
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Threading;
using System.Net;
using System.Net.Sockets;
using System.IO;
namespace WindowsFormsApplication2
{
public partial class Form1 : Form
{
private bool isserver = false;
public const int MAXSIZE = 10;
public Form1()
{
InitializeComponent();
clearoutput();
}
TcpListener tcpl = new TcpListener(IPAddress.Parse(getip()), 2546);
List<TcpClient> clients = new List<TcpClient>();
List<string> names = new List<string>();
bool CommandMode = false;
List<string> banlist = new List<string>();
TcpClient Client = new TcpClient();
//client setup
private void button1_Click(object sender, EventArgs e)
{
try {
Output.Text = Output.Text + "You have joined as a client";
Client = new TcpClient();
Client.Connect(IP_address.Text, 2546);
Thread myThread = new Thread(new ParameterizedThreadStart(Listen));
myThread.Start(Client);
//whenever you send a message you must include the next two lines
//Client.GetStream().Write(new byte[] { (byte)Encoding.Unicode.GetByteCount(name + " has joined") }, 0, 1);
//Client.GetStream().Write(Encoding.Unicode.GetBytes(name + " has joined"), 0, Encoding.Unicode.GetByteCount(name + " has joined"));
//the two lines above
Client.GetStream().Write(new byte[] { (byte)Encoding.Unicode.GetByteCount("\\join" + getip()) }, 0, 1);
Client.GetStream().Write(Encoding.Unicode.GetBytes("\\join" + getip()), 0, Encoding.Unicode.GetByteCount("\\join" + getip()));
}
catch { }
IP_address.Visible = false;
Join_btn.Visible = false;
Start_btn.Visible = false;
Output.Visible = true;
Input.Visible = true;
text1.Visible = true;
text1.Visible = true;
}
private void clearoutput()
{
Output.Text = "";
}
//server setup---
private void Start_btn_Click(object sender, EventArgs e)
{
isserver = true;
server_IP_lbl.Text = $"Since you are a server:\nYour ip address is : "+getip();
//if You need a new banlist make sure you click here and allow this
Write_to_output("you are a server");
try
{
StreamReader readerfrban = new StreamReader("banlist");
readerfrban.Close();
Write_to_output("we found a banlist \n no worries");
}
catch
{
Write_to_output("Error- could not find a banlist creating one now");
StreamWriter banlistmaker = new StreamWriter("banlist");
banlistmaker.Close();
}
//open banlist
StreamReader readerforban = new StreamReader("banlist");
string reader = "";
//read all bans in
do
{
reader = readerforban.ReadLine();
if (reader != null)
banlist.Add(reader);
} while (reader != null);
tcpl.Start();
//Thread AcceptSocketsThread = new Thread(AcceptSockets);
//AcceptSocketsThread.Start();
/* while (true)
{
string Message = Console.ReadLine();
if (Message.StartsWith("\\Kick"))
{
Console.Clear();
CommandMode = true;
int clientID = 0;
foreach (TcpClient client in clients)
{
Write_to_output(clientID.ToString() + ") " + names[clientID] + " " + client.Client.RemoteEndPoint);
clientID++;
}
Write_to_output("\n\n Enter the number of the person you want to kick");
TcpClient toRemove = clients[Convert.ToInt32(Console.ReadLine())];
toRemove.Close();
clients.Remove(toRemove);
CommandMode = false;
}
else if (Message.StartsWith("\\Reset"))
{
foreach (TcpClient client in clients)
{
client.Close();
}
clients.Clear();
Write_to_output("KICKED EVERY BODY");
}
else if (Message.StartsWith("\\ban"))
{
Console.Clear();
CommandMode = true;
int clientID = 0;
foreach (TcpClient client in clients)
{
Write_to_output(clientID.ToString() + ") " + names[clientID] + " " + client.Client.RemoteEndPoint);
clientID++;
}
Write_to_output("\n\n Enter the number of the person you want to kick and ban");
TcpClient toRemove = clients[Convert.ToInt32(Console.ReadLine())];
banlist.Add(toRemove.Client.RemoteEndPoint.ToString().Split(new char[] { ':' })[0]);
toRemove.Close();
clients.Remove(toRemove);
CommandMode = false;
}
//starts game
else
{
foreach (TcpClient client in clients)
{
SendMessage(Message, client);
}
}
}*/
IP_address.Visible = false;
Join_btn.Visible = false;
Start_btn.Visible = false;
Output.Visible = true;
Input.Visible = true;
text1.Visible = true;
text1.Visible = true;
}
void SendMessage(string message, TcpClient reciever)
{
try {
reciever.GetStream().Write(new byte[] { (byte)Encoding.Unicode.GetByteCount(message) }, 0, 1);
reciever.GetStream().Write(Encoding.Unicode.GetBytes(message), 0, Encoding.Unicode.GetByteCount(message));
}
catch
{
Write_to_output("Was unable to send to any users error code 1.0.0.0");
}
}
void AcceptSockets()
{
while (true)
{
TcpClient client = tcpl.AcceptTcpClient();
Thread myThread = new Thread(new ParameterizedThreadStart(Listen));
clients.Add(client);
myThread.Start(client);
}
}
void setname(string name)
{
names.Add(name);
}
void Listen(object obj)
{
TcpClient TCPClient = (TcpClient)obj;
while (true)
{
try
{
byte[] fBuffer = new byte[1];
TCPClient.GetStream().Read(fBuffer, 0, 1);
byte[] buffer = new byte[(int)fBuffer[0]];
TCPClient.GetStream().Read(buffer, 0, (int)fBuffer[0]);
string message = Encoding.Unicode.GetString(buffer).Trim();
if (message.StartsWith("\\join"))
{
message = message.Remove(0, 5);
int a = 0;
for (int i = 0; i < banlist.Count; i++)
{
if (message.StartsWith(banlist[i]))
{
a = 1;
}
}
if (a == 0)
{
//int namespaceer = 0;
//foreach (char chars in message)
//{
// namespaceer += 1;
// if (chars == '+')
// break;
//}
// message = message.Remove(0, namespaceer);
}
else
{
//Write_to_output("Person on banlist");
// TcpClient toRemove = clients[Convert.ToInt32(Console.ReadLine())];
//toRemove.Close();
}
}
else
{
foreach (TcpClient client in clients)
{
if (client != TCPClient)
{
SendMessage(message, client);
}
}
if (!CommandMode)
{
Write_to_output(message.Trim());
}
else
{
}
}
}
catch (Exception e)
{
Write_to_output(e.ToString());
}
}
}
static string getip()
{
IPHostEntry host;
string localIP = "?";
host = Dns.GetHostEntry(Dns.GetHostName());
foreach (IPAddress ip in host.AddressList)
{
if (ip.AddressFamily.ToString() == "InterNetwork")
{
localIP = ip.ToString();
}
}
return localIP;
}
public void Write_to_output(string towrite)
{
//check outputs length
int numLines = 0;
string text = Output.Text;
numLines = Text.Split('\n').Length;
if (numLines == MAXSIZE)
{
Output.Text = towrite;
}
else
{
Output.Text = Output.Text + $"\n" + towrite;
}
}
private void Input_Leave(object sender, EventArgs e)
{
string message = Input.Text;
if (isserver == false)
{
//send client code
SendMessage(message,Client);
}
else
{
//send server code
foreach (TcpClient client in clients)
{
SendMessage(message, client);
}
}
}
}
}
Please help me...
Dispose()ing the client properly, particularly when an error occurs