/// <summary>
/// This method permit to get back the real ip behind a proxy and check the list of banned IP.
/// </summary>
private bool GetAndCheckForwardedIp(string packet)
{
var splitPacket = packet.Split(new[] { "\n" }, StringSplitOptions.None);
foreach (var packetEach in splitPacket)
{
if (packetEach != null)
{
if (!string.IsNullOrEmpty(packetEach))
{
if (packetEach.ToLower().Contains("x-forwarded-for: "))
{
string newIp = packetEach.ToLower().Replace("x-forwarded-for: ", "");
_ip = newIp;
ClassLog.Log("HTTP/HTTPS API - X-Forwarded-For ip of the client is: " + newIp, 7, 2);
var checkBanResult = ClassApiBan.FilterCheckIp(_ip);
if (!checkBanResult) // Is Banned
{
return(false);
}
else
{
if (!string.IsNullOrEmpty(newIp))
{
ClassApiBan.FilterInsertIp(newIp);
}
return(true);
}
}
}
}
}
return(true);
}
/// <summary>
/// Start to listen incoming client.
/// </summary>
/// <returns></returns>
public async Task StartHandleClientHttpAsync()
{
try
{
_ip = ((IPEndPoint)(_client.Client.RemoteEndPoint)).Address.ToString();
}
catch
{
CloseClientConnection();
return;
}
var checkBanResult = true;
if (_ip != "127.0.0.1") // Do not check localhost ip.
{
checkBanResult = ClassApiBan.FilterCheckIp(_ip);
}
int totalWhile = 0;
if (checkBanResult)
{
if (_ip != "127.0.0.1")
{
ClassApiBan.FilterInsertIp(_ip);
}
try
{
while (_clientStatus)
{
try
{
byte[] buffer = new byte[ClassConnectorSetting.MaxNetworkPacketSize];
using (NetworkStream clientHttpReader = new NetworkStream(_client.Client))
{
using (var bufferedStreamNetwork = new BufferedStream(clientHttpReader, ClassConnectorSetting.MaxNetworkPacketSize))
{
int received = await bufferedStreamNetwork.ReadAsync(buffer, 0, buffer.Length);
if (received > 0)
{
string packet = Encoding.UTF8.GetString(buffer, 0, received);
try
{
if (!GetAndCheckForwardedIp(packet))
{
break;
}
}
catch
{
}
packet = ClassUtilsNode.GetStringBetween(packet, "GET", "HTTP");
packet = packet.Replace("/", "");
packet = packet.Replace(" ", "");
ClassLog.Log("HTTP API - packet received from IP: " + _ip + " - " + packet, 6, 2);
await HandlePacketHttpAsync(packet);
break;
}
else
{
totalWhile++;
}
if (totalWhile >= 8)
{
break;
}
}
}
}
catch
{
break;
}
}
}
catch
{
}
CloseClientConnection();
}
}