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; }