public override void Receive(byte[] buffer, int offset, int size, TimeSpan timeout)
{
if (_disposed)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
if (!_connect)
{
throw new CapException("Closed");
}
try
{
lock (_receiveLock)
{
_receiveStopwatch.Restart();
do
{
var time = SocketCap.CheckTimeout(_receiveStopwatch.Elapsed, timeout);
_socket.ReceiveTimeout = (int)Math.Min(int.MaxValue, time.TotalMilliseconds);
int receiveLength;
if ((receiveLength = _socket.Receive(buffer, offset, size, SocketFlags.None)) == 0)
{
_connect = false;
throw new CapException("Closed");
}
offset += receiveLength;
size -= receiveLength;
} while (size > 0);
}
}
catch (CapException)
{
throw;
}
catch (Exception e)
{
_connect = false;
throw new CapException("Receive", e);
}
}
public Connection AcceptConnection(out string uri, BandwidthLimit bandwidthLimit)
{
uri = null;
List<IDisposable> garbages = new List<IDisposable>();
try
{
Connection connection = null;
foreach (var type in (new int[] { 0, 1 }).Randomize())
{
if (this.State == ManagerState.Stop) return null;
if (type == 0)
{
lock (this.ThisLock)
{
foreach (var item in _tcpListeners)
{
if (item.Value.Pending())
{
var socket = item.Value.AcceptTcpClient().Client;
garbages.Add(socket);
{
var remoteEndPoint = (IPEndPoint)socket.RemoteEndPoint;
uri = string.Format("tcp:{0}:{1}", remoteEndPoint.Address, remoteEndPoint.Port);
}
if (!this.OnCheckUriEvent(uri))
{
_blockedCount.Increment();
continue;
}
var cap = new SocketCap(socket);
garbages.Add(cap);
connection = new BaseConnection(cap, bandwidthLimit, _maxReceiveCount, _bufferManager);
garbages.Add(connection);
}
}
}
}
else if (type == 1)
{
// Overlay network
var cap = this.OnAcceptCapEvent(out uri);
if (cap == null) continue;
garbages.Add(cap);
connection = new BaseConnection(cap, bandwidthLimit, _maxReceiveCount, _bufferManager);
garbages.Add(connection);
}
if (connection != null) break;
}
if (connection == null) return null;
var secureConnection = new SecureConnection(SecureConnectionVersion.Version3, SecureConnectionType.Accept, connection, null, _bufferManager);
garbages.Add(secureConnection);
secureConnection.Connect(new TimeSpan(0, 0, 30));
var compressConnection = new CompressConnection(secureConnection, _maxReceiveCount, _bufferManager);
garbages.Add(compressConnection);
compressConnection.Connect(new TimeSpan(0, 0, 10));
return compressConnection;
}
catch (Exception)
{
foreach (var item in garbages)
{
item.Dispose();
}
}
return null;
}
public Connection CreateConnection(string uri, BandwidthLimit bandwidthLimit)
{
List<IDisposable> garbages = new List<IDisposable>();
try
{
Connection connection = null;
if (connection == null)
{
// Overlay network
var cap = this.OnCreateCapEvent(uri);
if (cap == null) goto End;
garbages.Add(cap);
connection = new BaseConnection(cap, bandwidthLimit, _maxReceiveCount, _bufferManager);
garbages.Add(connection);
End: ;
}
if (connection == null)
{
ConnectionFilter connectionFilter = null;
lock (this.ThisLock)
{
foreach (var filter in this.Filters)
{
if (filter.UriCondition.IsMatch(uri))
{
if (filter.ConnectionType != ConnectionType.None)
{
connectionFilter = filter.Clone();
}
break;
}
}
}
if (connectionFilter == null) return null;
string scheme = null;
string host = null;
int port = -1;
{
var match = _regex.Match(uri);
if (match.Success)
{
scheme = match.Groups[1].Value;
host = match.Groups[2].Value;
port = int.Parse(match.Groups[3].Value);
}
else
{
var match2 = _regex2.Match(uri);
if (match2.Success)
{
scheme = match2.Groups[1].Value;
host = match2.Groups[2].Value;
port = 4050;
}
}
}
if (host == null) return null;
IList<KeyValuePair<string, string>> options = null;
if (!string.IsNullOrWhiteSpace(connectionFilter.Option))
{
options = ClientManager.Decode(connectionFilter.Option).OfType<KeyValuePair<string, string>>().ToList();
}
if (connectionFilter.ConnectionType == ConnectionType.Tcp)
{
var ipAddress = ClientManager.GetIpAddress(host);
if (ipAddress == null) return null;
host = ipAddress.ToString();
uri = string.Format("{0}:{1}:{2}", scheme, host, port);
if (!this.OnCheckUriEvent(uri))
{
return null;
}
#if !DEBUG
// Check
{
Uri url = new Uri(string.Format("{0}://{1}:{2}", scheme, host, port));
if (url.HostNameType == UriHostNameType.IPv4)
{
if (IPAddress.Any.ToString() == ipAddress.ToString()
|| IPAddress.Loopback.ToString() == ipAddress.ToString()
|| IPAddress.Broadcast.ToString() == ipAddress.ToString())
{
return null;
}
if (CollectionUtilities.Compare(ipAddress.GetAddressBytes(), IPAddress.Parse("10.0.0.0").GetAddressBytes()) >= 0
&& CollectionUtilities.Compare(ipAddress.GetAddressBytes(), IPAddress.Parse("10.255.255.255").GetAddressBytes()) <= 0)
{
return null;
}
if (CollectionUtilities.Compare(ipAddress.GetAddressBytes(), IPAddress.Parse("172.16.0.0").GetAddressBytes()) >= 0
&& CollectionUtilities.Compare(ipAddress.GetAddressBytes(), IPAddress.Parse("172.31.255.255").GetAddressBytes()) <= 0)
{
return null;
}
if (CollectionUtilities.Compare(ipAddress.GetAddressBytes(), IPAddress.Parse("127.0.0.0").GetAddressBytes()) >= 0
&& CollectionUtilities.Compare(ipAddress.GetAddressBytes(), IPAddress.Parse("127.255.255.255").GetAddressBytes()) <= 0)
{
return null;
}
if (CollectionUtilities.Compare(ipAddress.GetAddressBytes(), IPAddress.Parse("192.168.0.0").GetAddressBytes()) >= 0
&& CollectionUtilities.Compare(ipAddress.GetAddressBytes(), IPAddress.Parse("192.168.255.255").GetAddressBytes()) <= 0)
{
return null;
}
}
else if (url.HostNameType == UriHostNameType.IPv6)
{
if (IPAddress.IPv6Any.ToString() == ipAddress.ToString()
|| IPAddress.IPv6Loopback.ToString() == ipAddress.ToString()
|| IPAddress.IPv6None.ToString() == ipAddress.ToString())
{
return null;
}
if (ipAddress.ToString().ToLower().StartsWith("fe80:"))
{
return null;
}
}
}
#endif
var socket = ClientManager.Connect(new IPEndPoint(ipAddress, port), new TimeSpan(0, 0, 10));
garbages.Add(socket);
var cap = new SocketCap(socket);
garbages.Add(cap);
connection = new BaseConnection(cap, bandwidthLimit, _maxReceiveCount, _bufferManager);
garbages.Add(connection);
}
else
{
if (!this.OnCheckUriEvent(uri))
{
return null;
}
string proxyScheme = null;
string proxyHost = null;
int proxyPort = -1;
{
var match = _regex.Match(connectionFilter.ProxyUri);
if (match.Success)
{
proxyScheme = match.Groups[1].Value;
proxyHost = match.Groups[2].Value;
proxyPort = int.Parse(match.Groups[3].Value);
}
else
{
var match2 = _regex2.Match(connectionFilter.ProxyUri);
if (match2.Success)
{
proxyScheme = match2.Groups[1].Value;
proxyHost = match2.Groups[2].Value;
if (connectionFilter.ConnectionType == ConnectionType.Socks4Proxy
|| connectionFilter.ConnectionType == ConnectionType.Socks4aProxy
|| connectionFilter.ConnectionType == ConnectionType.Socks5Proxy)
{
proxyPort = 1080;
}
else if (connectionFilter.ConnectionType == ConnectionType.HttpProxy)
{
proxyPort = 80;
}
}
}
}
if (proxyHost == null) return null;
if (connectionFilter.ConnectionType == ConnectionType.Socks4Proxy
|| connectionFilter.ConnectionType == ConnectionType.Socks4aProxy
|| connectionFilter.ConnectionType == ConnectionType.Socks5Proxy
|| connectionFilter.ConnectionType == ConnectionType.HttpProxy)
{
var socket = ClientManager.Connect(new IPEndPoint(ClientManager.GetIpAddress(proxyHost), proxyPort), new TimeSpan(0, 0, 10));
garbages.Add(socket);
ProxyClientBase proxy = null;
if (connectionFilter.ConnectionType == ConnectionType.Socks4Proxy)
{
var user = (options != null) ? options.Where(n => n.Key.ToLower().StartsWith("user")).Select(n => n.Value).FirstOrDefault() : null;
proxy = new Socks4ProxyClient(socket, user, host, port);
}
else if (connectionFilter.ConnectionType == ConnectionType.Socks4aProxy)
{
var user = (options != null) ? options.Where(n => n.Key.ToLower().StartsWith("user")).Select(n => n.Value).FirstOrDefault() : null;
proxy = new Socks4aProxyClient(socket, user, host, port);
}
else if (connectionFilter.ConnectionType == ConnectionType.Socks5Proxy)
{
var user = (options != null) ? options.Where(n => n.Key.ToLower().StartsWith("user")).Select(n => n.Value).FirstOrDefault() : null;
var pass = (options != null) ? options.Where(n => n.Key.ToLower().StartsWith("pass")).Select(n => n.Value).FirstOrDefault() : null;
proxy = new Socks5ProxyClient(socket, user, pass, host, port);
}
else if (connectionFilter.ConnectionType == ConnectionType.HttpProxy)
{
proxy = new HttpProxyClient(socket, host, port);
}
var cap = new SocketCap(proxy.Create(new TimeSpan(0, 0, 30)));
garbages.Add(cap);
connection = new BaseConnection(cap, bandwidthLimit, _maxReceiveCount, _bufferManager);
garbages.Add(connection);
}
}
}
if (connection == null) return null;
var secureConnection = new SecureConnection(SecureConnectionVersion.Version3, SecureConnectionType.Connect, connection, null, _bufferManager);
garbages.Add(secureConnection);
secureConnection.Connect(new TimeSpan(0, 0, 30));
var compressConnection = new CompressConnection(secureConnection, _maxReceiveCount, _bufferManager);
garbages.Add(compressConnection);
compressConnection.Connect(new TimeSpan(0, 0, 10));
return compressConnection;
}
catch (Exception)
{
foreach (var item in garbages)
{
item.Dispose();
}
}
return null;
}