193 lines
10 KiB
C#
193 lines
10 KiB
C#
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.Sockets;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace MSGer.tk
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{
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partial class Networking
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{
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public static UdpClient SenderConnection = new UdpClient(); //2014.09.04. - Ezt ne társítsa egy porthoz, hogy működjön az udp hole punching
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public static UdpClient ReceiverConnection = new UdpClient(); //2014.09.04. - Társítsa egy porthoz
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public static byte[] DataBuffer;
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public static IPEndPoint RemoteEP;
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public static bool WaitingOnResponse = false; //2014.08.16.
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public static byte WaitingOnPacket = 0x00; //2014.08.16. - 0x00: Nincs
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public static byte[][] SendUpdate(UpdateType ut, byte[] data, bool response, IPEndPoint onlythisep = null)
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{
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if (Program.MainF != null && Program.MainF.IsHandleCreated) //IsHandleCreated: 2014.12.31.
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{ //2014.11.21.
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if (Program.MainF.InvokeRequired) //2014.11.21.
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{ //2014.11.21.
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Program.MainF.Invoke(new Action<MainForm.StatType, int>(Program.MainF.UpdateStats), //2014.11.21.
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MainForm.StatType.Servers, UserInfo.IPs.Count); //2014.11.21.
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Program.MainF.Invoke(new Action<MainForm.StatType, int>(Program.MainF.UpdateStats), //2014.11.21.
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MainForm.StatType.OnlineServers, UserInfo.IPs.Count - UserInfo.BannedIPs.Count); //2014.11.21.
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}
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else //2014.11.21.
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{ //2014.11.21.
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/*Program.MainF.UpdateStats(MainForm.StatType.Servers, UserInfo.IPs.Count); //2014.11.21.
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Program.MainF.UpdateStats(MainForm.StatType.OnlineServers, UserInfo.IPs.Count - UserInfo.BannedIPs.Count); //2014.11.21. - 2014.12.05. - Servers --> OnlineServers*/
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//2014.12.31.
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MessageBox.Show("Internal error: Network call was made in the same thread as the UI. This could lead to freezes.\nNetwork update canceled.");
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return null;
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}
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}
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if (UserInfo.IPs.Count == 0
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&& !UserInfo.IPs.Any(entry => entry.Address.Equals(RemoteEP.Address))
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&& ut != Networking.UpdateType.LoginUser
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/*&& ut != Networking.UpdateType.CheckConn
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&& ut != Networking.UpdateType.RequestConn
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&& ut != Networking.UpdateType.MakeConn
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&& ut != Networking.UpdateType.MakeConn2*/) //2014.12.19.
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return null;
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//Log("Packet sending begins: there are users online and/or it is an update type that does not require that.");
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byte[] senddata = CreatePacket(response, (byte)ut, data);
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//Log("Packet created successfully (" + ((response) ? "" : "not ") + "response) with update type " + ut.ToString());
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if (UserInfo.BanTime < Environment.TickCount - 1000 * 10) //2014.08.30. - 2014.10.09. - 10 percről 1-re csökkentve - 2014.11.22. - 1 percről 10 mp-re csökkentve
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//UserInfo.BannedIPs = new List<IPEndPoint>(); //2014.08.30.
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UserInfo.BannedIPs = new List<IPEndPoint>(); //2014.11.23.
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if (!response)
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{ //2014.08.30. - Azelőtt állítsa be, hogy elküldené a lekéréseket, hogy biztosan reagáljon a válaszra
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WaitingOnResponse = true; //2014.08.16.
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WaitingOnPacket = (byte)ut; //2014.08.16.
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}
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//Log("Hole punching begins.");
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/*if (ut != UpdateType.CheckConn && ut != UpdateType.RequestConn)
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CheckNPunchHole(); //2014.11.22.*/
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//Log("Hole punching done.");
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if (onlythisep == null) //2014.11.22. - != helyett ==: 2014.12.18.
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{
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//Log("Sending to every known user...");
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foreach (var item in UserInfo.IPs)
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{ //Elküldi az összes ismert címre
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try
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{
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if (!UserInfo.BannedIPs.Contains(item))
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//SenderConnection.Send(Storage.Encrypt(senddata.ToArray(), "sendupdatestringencrypted"), senddata.Count, item);
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SenderConnection.Send(senddata, senddata.Length, item);
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}
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catch (ObjectDisposedException)
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{
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return null;
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}
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}
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}
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else
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{ //2014.11.22.
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//Log("Sending to single ip: " + onlythisep.Address + ":" + onlythisep.Port);
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try
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{
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//if (UserInfo.IPs.Any(entry=>entry.IP==onlythisep) && !UserInfo.BannedIPs.Any(entry=>entry.IP==onlythisep))
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//if (UserInfo.IPs.Any(entry => entry.IP == onlythisep) && !UserInfo.BannedIPs.Any(entry => entry.IP == onlythisep))
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SenderConnection.Send(senddata, senddata.Length, onlythisep);
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}
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catch (ObjectDisposedException)
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{
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return null;
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}
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}
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if (!response)
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{
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int lasttick = Environment.TickCount;
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List<byte[]> Ret = new List<byte[]>();
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List<IPEndPoint> ResponsedIPs = new List<IPEndPoint>();
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int count = 1;
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//Log("Starting to wait on response...");
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while (Environment.TickCount - 1000 * 10 < lasttick && (
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(onlythisep == null) ? //2014.11.22.
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ResponsedIPs.Count < UserInfo.IPs.Count - UserInfo.BannedIPs.Count :
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ResponsedIPs.Count == 0 //2014.11.22.
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)) //2014.09.09. - 2014.10.09. - 60 mp --> 10 mp
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{ //2014.08.19. - Ret.Count == tmp.Length
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if (MainForm.LThread != null) //2014.09.06.
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{
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//Log("Waiting to get response... Wait time: " + count * 2 + "seconds");
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while (DataBuffer == null && Environment.TickCount - 1000 * count * 2 < lasttick) ; //Várakozik, amíg a másik thread át nem adja a választ - 2014.10.09. - 10 mp --> 2 mp
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/*foreach (var item in UserInfo.IPs.Except(UserInfo.BannedIPs).Except(ResponsedIPs)) //2014.09.22.
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{ //Elküldi az összes ismert címre
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try
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{
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SenderConnection.Send(senddata, senddata.Length, item.IP);
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}
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catch (ObjectDisposedException)
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{
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return null;
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}
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}
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count++;*/
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}
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if (DataBuffer == null) //2014.08.30. - Az idő telt le
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{
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//Log("No response received. Retrying...");
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//UserInfo.BannedIPs = UserInfo.IPs.Except(ResponsedIPs).ToList(); //2014.08.30. - Ideiglenesen kitilt minden IP-t, ahonnan nem érkezett válasz
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//UserInfo.BanTime = Environment.TickCount;
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foreach (var item in UserInfo.IPs.Except(UserInfo.BannedIPs).Except(ResponsedIPs)) //2014.09.22.
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{ //Elküldi az összes ismert címre
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try
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{
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SenderConnection.Send(senddata, senddata.Length, item);
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}
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catch (ObjectDisposedException)
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{
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return null;
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}
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}
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count++;
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//break;
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continue;
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}
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//Log("A response received.");
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//if (UserInfo.IPs.Any(entry=>entry.IP==RemoteEP) && !UserInfo.BannedIPs.Any(entry=>entry.IP==RemoteEP))
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if (!(!UserInfo.IPs.Any(entry => entry.Address.Equals(RemoteEP.Address))
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&& ut != Networking.UpdateType.LoginUser
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/*&& ut != Networking.UpdateType.CheckConn
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&& ut != Networking.UpdateType.RequestConn
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&& ut != Networking.UpdateType.MakeConn
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&& ut != Networking.UpdateType.MakeConn2*/)) //2014.12.22. - Ha az egész feltétel nem teljesül, akkor sikerült
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{
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//Log("Response is from known ip or it's not required to be that.");
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//ResponsedIPs.Add(RemoteEP);
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foreach (var item in UserInfo.IPs.Where(entry => entry == RemoteEP))
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ResponsedIPs.Add(item);
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var pparts = ParsePacket(DataBuffer);
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//Log("Packet parsed.");
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if (pparts.KeyVersion != CurrentUser.KeyIndex && pparts.UpdateType != UpdateType.SetKey)
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{
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//Log("Key version mismatch.");
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DataBuffer = null; //2014.09.22. - Mindig adja meg a lehetőséget, hogy újra beállítsa
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continue;
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}
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//Log("Complete success!");
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int i;
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for (i = 0; i < Ret.Count; i++)
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{
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if (DataBuffer.SequenceEqual(Ret[i]))
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break;
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}
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if (i == Ret.Count)
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Ret.Add(DataBuffer);
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} //(2014.08.17. -->) Várja meg, amíg az összes online(!) ismerőse válaszol - Vagy letelik az egy perc
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DataBuffer = null; //2014.09.22. - Mindig adja meg a lehetőséget, hogy újra beállítsa
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}
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//Log("Resetting everything.");
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DataBuffer = null;
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RemoteEP = null;
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WaitingOnResponse = false;
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WaitingOnPacket = 0x00;
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//Log("Returning response if there was any.");
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return Ret.ToArray();
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}
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return null;
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}
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}
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}
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