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using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using XUpdater;
namespace XUtliPoolLib
{
public class XFetchVersionNetwork
{
private Socket m_oSocket;
private XFetchVersionNetwork.SocketState m_nState;
private static byte[] m_oRecvBuff;
private int m_nCurrRecvLen;
public static int TotalRecvBytes;
private AsyncCallback m_RecvCb = null;
private AsyncCallback m_ConnectCb = null;
public bool m_bRecvMsg = true;
public bool m_bPause = false;
public int m_nPauseRecvLen = 0;
private AddressFamily m_NetworkType = AddressFamily.InterNetwork;
public enum SocketState
{
State_Closed,
State_Connecting,
State_Connected
}
public XFetchVersionNetwork()
{
this.m_oSocket = null;
this.m_nState = XFetchVersionNetwork.SocketState.State_Closed;
XFetchVersionNetwork.m_oRecvBuff = null;
this.m_nCurrRecvLen = 0;
this.m_RecvCb = new AsyncCallback(this.RecvCallback);
this.m_ConnectCb = new AsyncCallback(this.OnConnect);
}
private void GetNetworkType()
{
try
{
string hostNameOrAddress = XSingleton<XUpdater.XUpdater>.singleton.XPlatform.GetLoginServer("QQ").Substring(0, XSingleton<XUpdater.XUpdater>.singleton.XPlatform.GetLoginServer("QQ").LastIndexOf(':'));
IPAddress[] hostAddresses = Dns.GetHostAddresses(hostNameOrAddress);
this.m_NetworkType = hostAddresses[0].AddressFamily;
}
catch (Exception ex)
{
XSingleton<XDebug>.singleton.AddWarningLog(ex.Message, null, null, null, null, null);
}
}
public bool Init()
{
this.GetNetworkType();
try
{
this.m_nState = XFetchVersionNetwork.SocketState.State_Closed;
this.m_oSocket = new Socket(this.m_NetworkType, SocketType.Stream, ProtocolType.Tcp);
this.m_oSocket.NoDelay = true;
bool flag = XFetchVersionNetwork.m_oRecvBuff == null;
if (flag)
{
XFetchVersionNetwork.m_oRecvBuff = new byte[512];
}
this.m_nCurrRecvLen = 0;
}
catch (Exception ex)
{
XSingleton<XDebug>.singleton.AddWarningLog(ex.Message, "new Socket Error!", null, null, null, null);
return false;
}
return true;
}
public void UnInit()
{
this.Close();
}
private void OnConnect(IAsyncResult iar)
{
try
{
bool flag = this.m_nState == XFetchVersionNetwork.SocketState.State_Closed;
if (!flag)
{
Socket socket = (Socket)iar.AsyncState;
socket.EndConnect(iar);
this.SetState(XFetchVersionNetwork.SocketState.State_Connected);
socket.BeginReceive(XFetchVersionNetwork.m_oRecvBuff, this.m_nCurrRecvLen, XFetchVersionNetwork.m_oRecvBuff.Length - this.m_nCurrRecvLen, SocketFlags.None, this.m_RecvCb, socket);
}
}
catch (Exception ex)
{
XSingleton<XDebug>.singleton.AddWarningLog(ex.Message, null, null, null, null, null);
this.SetState(XFetchVersionNetwork.SocketState.State_Closed);
this.Close();
}
}
public bool Connect(string host, int port)
{
bool result;
try
{
this.SetState(XFetchVersionNetwork.SocketState.State_Connecting);
this.m_oSocket.BeginConnect(host, port, this.m_ConnectCb, this.m_oSocket);
result = true;
}
catch (Exception ex)
{
XSingleton<XDebug>.singleton.AddWarningLog(ex.Message, null, null, null, null, null);
result = false;
}
return result;
}
public void Close()
{
this.m_nState = XFetchVersionNetwork.SocketState.State_Closed;
bool flag = this.m_oSocket == null;
if (!flag)
{
try
{
this.m_oSocket.Close();
}
catch (Exception ex)
{
XSingleton<XDebug>.singleton.AddWarningLog(ex.Message, null, null, null, null, null);
}
this.m_oSocket = null;
}
}
public Socket GetSocket()
{
return this.m_oSocket;
}
public bool IsClosed()
{
return this.m_nState == XFetchVersionNetwork.SocketState.State_Closed;
}
private void SetState(XFetchVersionNetwork.SocketState nState)
{
this.m_nState = nState;
}
public void RecvCallback(IAsyncResult ar)
{
try
{
bool flag = this.m_nState == XFetchVersionNetwork.SocketState.State_Closed;
if (!flag)
{
Socket socket = (Socket)ar.AsyncState;
int num = socket.EndReceive(ar);
bool flag2 = num > 0;
if (flag2)
{
XFetchVersionNetwork.TotalRecvBytes += num;
this.m_nCurrRecvLen += num;
bool flag3 = this.DetectPacket();
if (!flag3)
{
bool flag4 = this.m_nCurrRecvLen == XFetchVersionNetwork.m_oRecvBuff.Length;
if (flag4)
{
XSingleton<XDebug>.singleton.AddWarningLog("RecvCallback error ! m_nCurrRecvLen == m_oRecvBuff.Length", null, null, null, null, null);
}
socket.BeginReceive(XFetchVersionNetwork.m_oRecvBuff, this.m_nCurrRecvLen, XFetchVersionNetwork.m_oRecvBuff.Length - this.m_nCurrRecvLen, SocketFlags.None, this.m_RecvCb, socket);
}
}
else
{
bool flag5 = num == 0;
if (flag5)
{
XSingleton<XDebug>.singleton.AddWarningLog("Close socket normally", null, null, null, null, null);
this.Close();
}
else
{
XSingleton<XDebug>.singleton.AddWarningLog("Close socket, recv error!", null, null, null, null, null);
this.Close();
}
}
}
}
catch (ObjectDisposedException)
{
}
catch (SocketException ex)
{
XSingleton<XDebug>.singleton.AddWarningLog(ex.Message, null, null, null, null, null);
this.Close();
}
catch (Exception ex2)
{
XSingleton<XDebug>.singleton.AddWarningLog(ex2.Message, null, null, null, null, null);
this.Close();
}
}
public bool DetectPacket()
{
if (this.m_nCurrRecvLen > 0)
{
int num = this.BreakPacket(XFetchVersionNetwork.m_oRecvBuff, 0, this.m_nCurrRecvLen);
bool flag = num == 0;
if (!flag)
{
bool bRecvMsg = this.m_bRecvMsg;
if (bRecvMsg)
{
byte[] array = new byte[num];
Array.Copy(XFetchVersionNetwork.m_oRecvBuff, 0, array, 0, num);
Encoding utf = Encoding.UTF8;
XSingleton<XUpdater.XUpdater>.singleton.SetServerVersion(utf.GetString(array, 4, num - 4));
return true;
}
}
}
return false;
}
public int BreakPacket(byte[] data, int index, int len)
{
bool flag = len < 4;
int result;
if (flag)
{
result = 0;
}
else
{
int num = BitConverter.ToInt32(data, index);
bool flag2 = len < 4 + num;
if (flag2)
{
result = 0;
}
else
{
result = num + 4;
}
}
return result;
}
}
}
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