protected virtual void Connect(string host, int port, UpgradeConnectionStreamCallback createAuthenticatedStreamCallback)
{
if (host == null)
throw new ArgumentNullException("host");
if (port < IPEndPoint.MinPort || IPEndPoint.MaxPort < port)
throw new ArgumentOutOfRangeException("port", port, "out of range");
if (client != null)
throw new InvalidOperationException("already connected");
TcpClient c = null;
try {
c = new TcpClient();
c.ReceiveTimeout = DefaultTimeoutMilliseconds;
c.SendTimeout = DefaultTimeoutMilliseconds;
ConnectionTrace.Log(this, "connecting to {0}:{1}", host, port);
c.Connect(host, port);
this.host = host;
this.client = c;
this.remoteEndPoint = c.Client.RemoteEndPoint as IPEndPoint;
this.localEndPoint = c.Client.LocalEndPoint as IPEndPoint;
this.stream = CreateBufferedStream(ConnectionTrace.CreateTracingStream(this, client.GetStream()));
ConnectionTrace.Log(this, "connected: {0} ({1})", remoteEndPoint, host);
}
catch (Exception ex) {
ConnectionTrace.Log(this, ex);
if (c != null)
c.Close();
this.client = null;
throw new ConnectionException("connect failed", ex);
}
try {
if (createAuthenticatedStreamCallback != null) {
UpgradeStream(createAuthenticatedStreamCallback);
isSecurePortConnection = true;
}
}
catch {
this.client.Close();
this.client = null;
throw;
}
}
protected virtual void Dispose(bool disposing)
{
if (disposing) {
try {
if (client != null) {
client.Close();
ConnectionTrace.Log(this, "disconnected: {0} ({1})", remoteEndPoint, host);
}
}
finally {
client = null;
stream = null;
}
}
}
public virtual void UpgradeStream(UpgradeConnectionStreamCallback upgradeStreamCallback)
{
if (upgradeStreamCallback == null)
throw new ArgumentNullException("upgradeStreamCallback");
try {
var upgradedStream = upgradeStreamCallback(this, RawStream);
var sslStream = upgradedStream as SslStream;
if (sslStream != null)
ConnectionTrace.Log(this, "TLS started: {0}, {1}, {2}, {3}{4}",
sslStream.SslProtocol,
sslStream.CipherAlgorithm,
sslStream.HashAlgorithm,
sslStream.KeyExchangeAlgorithm,
sslStream.IsMutuallyAuthenticated ? ", mutually authenticated" : string.Empty);
stream = CreateBufferedStream(ConnectionTrace.CreateTracingStream(this, upgradedStream));
}
catch (AuthenticationException ex) {
ConnectionTrace.Log(this, ex);
throw new ConnectionException(string.Format("upgrading stream failed (callback: {0})", upgradeStreamCallback.Method), ex);
}
catch (IOException ex) {
ConnectionTrace.Log(this, ex);
throw new ConnectionException(string.Format("upgrading stream failed (callback: {0})", upgradeStreamCallback.Method), ex);
}
}