// Token: 0x06000019 RID: 25 RVA: 0x00009DBC File Offset: 0x00007FBC
private static IPAddress GetNextAddress(ConnectAsyncExtension.DnsConnectState state, out Socket attempSocket)
{
IPAddress ipaddress = null;
attempSocket = null;
int nextAddressIndex = state.NextAddressIndex;
while (attempSocket == null)
{
if (nextAddressIndex >= state.Addresses.Length)
{
return(null);
}
ipaddress = state.Addresses[nextAddressIndex++];
if (ipaddress.AddressFamily == AddressFamily.InterNetworkV6)
{
attempSocket = state.Socket6;
}
else if (ipaddress.AddressFamily == AddressFamily.InterNetwork)
{
attempSocket = state.Socket4;
}
}
state.NextAddressIndex = nextAddressIndex;
return(ipaddress);
}
// Token: 0x0600001C RID: 28 RVA: 0x00009F5C File Offset: 0x0000815C
private static void SocketConnectCompleted(object sender, SocketAsyncEventArgs e)
{
ConnectAsyncExtension.DnsConnectState dnsConnectState = e.UserToken as ConnectAsyncExtension.DnsConnectState;
if (e.SocketError == SocketError.Success)
{
ConnectAsyncExtension.ClearSocketAsyncEventArgs(e);
dnsConnectState.Callback((Socket)sender, dnsConnectState.State, e, null);
return;
}
if (e.SocketError != SocketError.HostUnreachable && e.SocketError != SocketError.ConnectionRefused)
{
ConnectAsyncExtension.ClearSocketAsyncEventArgs(e);
dnsConnectState.Callback(null, dnsConnectState.State, e, null);
return;
}
Socket socket;
IPAddress nextAddress = ConnectAsyncExtension.GetNextAddress(dnsConnectState, out socket);
if (nextAddress == null)
{
ConnectAsyncExtension.ClearSocketAsyncEventArgs(e);
e.SocketError = SocketError.HostUnreachable;
dnsConnectState.Callback(null, dnsConnectState.State, e, null);
return;
}
e.RemoteEndPoint = new IPEndPoint(nextAddress, dnsConnectState.Port);
if (!socket.ConnectAsync(e))
{
ConnectAsyncExtension.SocketConnectCompleted(socket, e);
}
}
// Token: 0x0600001A RID: 26 RVA: 0x00002282 File Offset: 0x00000482
private static void CreateAttempSocket(ConnectAsyncExtension.DnsConnectState connectState)
{
if (Socket.OSSupportsIPv6)
{
connectState.Socket6 = new Socket(AddressFamily.InterNetworkV6, SocketType.Stream, ProtocolType.Tcp);
}
connectState.Socket4 = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
}
// Token: 0x0600001B RID: 27 RVA: 0x00009E24 File Offset: 0x00008024
private static void OnGetHostAddresses(IAsyncResult result)
{
ConnectAsyncExtension.DnsConnectState dnsConnectState = result.AsyncState as ConnectAsyncExtension.DnsConnectState;
IPAddress[] array;
try
{
array = Dns.EndGetHostAddresses(result);
}
catch (Exception exception)
{
dnsConnectState.Callback(null, dnsConnectState.State, null, exception);
return;
}
if (array == null || array.Length == 0)
{
dnsConnectState.Callback(null, dnsConnectState.State, null, new SocketException(11001));
return;
}
dnsConnectState.Addresses = array;
ConnectAsyncExtension.CreateAttempSocket(dnsConnectState);
Socket socket;
IPAddress nextAddress = ConnectAsyncExtension.GetNextAddress(dnsConnectState, out socket);
if (nextAddress == null)
{
dnsConnectState.Callback(null, dnsConnectState.State, null, new SocketException(10047));
return;
}
if (dnsConnectState.LocalEndPoint != null)
{
try
{
socket.ExclusiveAddressUse = false;
socket.Bind(dnsConnectState.LocalEndPoint);
}
catch (Exception exception2)
{
dnsConnectState.Callback(null, dnsConnectState.State, null, exception2);
return;
}
}
SocketAsyncEventArgs socketAsyncEventArgs = new SocketAsyncEventArgs();
socketAsyncEventArgs.Completed += ConnectAsyncExtension.SocketConnectCompleted;
IPEndPoint remoteEndPoint = new IPEndPoint(nextAddress, dnsConnectState.Port);
socketAsyncEventArgs.RemoteEndPoint = remoteEndPoint;
socketAsyncEventArgs.UserToken = dnsConnectState;
if (!socket.ConnectAsync(socketAsyncEventArgs))
{
ConnectAsyncExtension.SocketConnectCompleted(socket, socketAsyncEventArgs);
}
}