public GClass123(ProxySettings[] proxySettings_1, int int_1 = 0)
{
Class13.NP5bWyNzLwONS();
base..ctor();
if (int_1 < 0 || int_1 > 65535)
{
throw new ArgumentOutOfRangeException("internalServerPort");
}
if (proxySettings_1 == null)
{
throw new ArgumentNullException("proxyList");
}
if (proxySettings_1.Length == 0)
{
throw new ArgumentException("proxyList is empty", "proxyList");
}
if (proxySettings_1.Any(new Func <ProxySettings, bool>(GClass123.< > c.< > c_0.method_0)))
{
throw new ArgumentNullException("proxyList", "Proxy in proxyList is null");
}
this.proxySettings_0 = proxySettings_1;
this.method_1(int_1);
this.socket_0 = GClass123.smethod_4();
this.socket_0.Bind(new IPEndPoint(IPAddress.Loopback, this.method_0()));
if (this.method_0() == 0)
{
this.method_1(((IPEndPoint)this.socket_0.LocalEndPoint).Port);
}
this.uri_0 = new Uri("http://127.0.0.1:" + this.method_0().ToString());
this.socket_0.Listen(8);
this.socket_0.BeginAccept(new AsyncCallback(this.method_4), null);
}
private static bool smethod_1(Socket socket_1, out string string_0, out byte[] byte_0)
{
string_0 = null;
byte_0 = null;
byte[] array = new byte[8192];
int num = 0;
int num2 = 8192;
while (num2 != 0)
{
int num3 = num;
int num4 = socket_1.Receive(array, num, num2, SocketFlags.None);
if (num4 == 0)
{
return(false);
}
num += num4;
num2 -= num4;
int num5;
if (array.smethod_0(Math.Max(0, num3 - 3), num, out num5))
{
string_0 = Encoding.ASCII.GetString(array, 0, num5);
if (num != num5)
{
int num6 = num - num5;
byte_0 = new byte[num6];
Array.Copy(array, num5, byte_0, 0, num6);
}
return(true);
}
}
GClass123.smethod_3(socket_1, (GClass123.GEnum7)(-2147483648), "HTTP/1.1 ");
return(false);
}
private static void smethod_3(Socket socket_1, GClass123.GEnum7 genum7_0, string string_0 = "HTTP/1.1 ")
{
GClass123.smethod_2(socket_1, string_0 + "401 Unauthorized\r\n\r\n");
}
private static bool smethod_0(Socket socket_1, out string string_0, out int int_1, out string string_1, out bool bool_1, out string string_2, out byte[] byte_0)
{
string_0 = null;
int_1 = -1;
string_1 = null;
bool_1 = false;
string_2 = null;
string text;
if (!GClass123.smethod_1(socket_1, out text, out byte_0))
{
return(false);
}
List <string> list = text.Split(new char[]
{
'\n'
}).Select(new Func <string, string>(GClass123.< > c.< > c_0.method_1)).Where(new Func <string, bool>(GClass123.< > c.< > c_0.method_2)).ToList <string>();
string[] array = list[0].Split(new char[]
{
' '
});
if (array.Length != 3)
{
GClass123.smethod_3(socket_1, (GClass123.GEnum7)(-2147483648), "HTTP/1.1 ");
return(false);
}
string text2 = array[0];
string_1 = array[2].Trim() + " ";
bool_1 = text2.Equals("Connect", StringComparison.OrdinalIgnoreCase);
string text3 = null;
if (bool_1)
{
using (List <string> .Enumerator enumerator = list.GetEnumerator())
{
while (enumerator.MoveNext())
{
string text4 = enumerator.Current;
int num = text4.IndexOf(':');
if (num == -1)
{
GClass123.smethod_3(socket_1, (GClass123.GEnum7)(-2147483648), string_1);
return(false);
}
if (text4.Substring(0, num).Trim().Equals("Host", StringComparison.OrdinalIgnoreCase))
{
text3 = text4.Substring(num + 1).Trim();
break;
}
}
goto IL_2B1;
}
bool result;
return(result);
}
Uri uri = new Uri(array[1]);
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.Append(array[0]);
stringBuilder.Append(' ');
stringBuilder.Append(uri.PathAndQuery);
stringBuilder.Append(uri.Fragment);
stringBuilder.Append(' ');
stringBuilder.Append(array[2]);
for (int i = 1; i < list.Count; i++)
{
int num2 = list[i].IndexOf(':');
if (num2 != -1)
{
string text5 = list[i].Substring(0, num2).Trim();
if (text5.Equals("Host", StringComparison.OrdinalIgnoreCase))
{
text3 = list[i].Substring(num2 + 1).Trim();
stringBuilder.Append("\r\n");
stringBuilder.Append(list[i]);
}
else if (!text5.smethod_1())
{
stringBuilder.Append("\r\n");
stringBuilder.Append(list[i]);
}
}
}
if (text3 == null)
{
stringBuilder.Append("\r\nHost: ");
stringBuilder.Append(uri.Host);
}
stringBuilder.Append("\r\n\r\n");
string_2 = stringBuilder.ToString();
IL_2B1:
int_1 = (bool_1 ? 443 : 80);
if (string.IsNullOrEmpty(text3))
{
string text6 = array[1];
string_0 = text6;
int num3 = text6.LastIndexOf(':');
if (num3 != -1)
{
if (int.TryParse(text6.Substring(num3 + 1), out int_1))
{
string_0 = text6.Substring(0, num3);
}
else
{
int_1 = (bool_1 ? 443 : 80);
}
}
}
else
{
int num4 = text3.LastIndexOf(':');
if (num4 == -1)
{
string_0 = text3;
string text7 = array[1];
num4 = text7.LastIndexOf(':');
if (num4 != -1 && !int.TryParse(text7.Substring(num4 + 1), out int_1))
{
int_1 = (bool_1 ? 443 : 80);
}
}
else
{
string_0 = text3.Substring(0, num4);
if (!int.TryParse(text3.Substring(num4 + 1), out int_1))
{
int_1 = (bool_1 ? 443 : 80);
}
}
}
return(true);
}
private void method_5(Socket socket_1)
{
Socket socket = null;
bool flag = true;
try
{
string string_;
int num;
string text;
bool flag2;
string string_2;
byte[] array;
if (GClass123.smethod_0(socket_1, out string_, out num, out text, out flag2, out string_2, out array))
{
try
{
socket = GClass123.smethod_4();
socket.Connect(this.proxySettings_0[0].Host, this.proxySettings_0[0].Port);
}
catch (SocketException)
{
GClass123.smethod_3(socket_1, (GClass123.GEnum7)(-2147483644), "HTTP/1.1 ");
flag = false;
}
catch (Exception)
{
GClass123.smethod_3(socket_1, (GClass123.GEnum7)(-2147483647), "HTTP/1.1 ");
flag = false;
}
if (flag)
{
int i = 0;
while (i < this.proxySettings_0.Length - 1)
{
ProxySettings proxySettings = this.proxySettings_0[i];
ProxySettings proxySettings2 = this.proxySettings_0[i + 1];
GClass123.GEnum7 genum = GClass123.Class3.smethod_0(socket, proxySettings2.Host, proxySettings2.Port, proxySettings);
if (genum == (GClass123.GEnum7) 0)
{
i++;
}
else
{
GClass123.smethod_3(socket_1, genum, text);
flag = false;
IL_CE:
if (!flag)
{
goto IL_12E;
}
ProxySettings proxySettings3 = this.proxySettings_0.Last <ProxySettings>();
genum = GClass123.Class3.smethod_0(socket, string_, num, proxySettings3);
if (genum != (GClass123.GEnum7) 0)
{
GClass123.smethod_3(socket_1, genum, text);
flag = false;
goto IL_12E;
}
if (flag2)
{
GClass123.smethod_2(socket_1, text + "200 Connection established\r\nProxy-Agent: HttpToSocksProxy\r\n\r\n");
goto IL_12E;
}
GClass123.smethod_2(socket, string_2);
if (array != null)
{
socket.Send(array, SocketFlags.None);
goto IL_12E;
}
goto IL_12E;
}
}
goto IL_CE;
}
}
else
{
flag = false;
}
IL_12E :;
}
catch
{
flag = false;
try
{
GClass123.smethod_3(socket_1, (GClass123.GEnum7)(-2147483647), "HTTP/1.1 ");
}
catch
{
}
}
finally
{
if (flag)
{
GClass123.Class2.smethod_1(socket, socket_1);
}
else
{
socket_1.smethod_3();
socket.smethod_3();
}
}
}