public virtual async void connect(string address, SessionRequestListener networkListener, IDictionary <string, string> extraHeaders, string cookies, Proxy proxy, long timeout)
{
Uri uri = LsUtils.uri(address);
string host = uri.Host;
int port = LsUtils.port(uri);
bool secure = LsUtils.isSSL(uri);
try
{
string host4Netty = System.Net.Dns.GetHostAddresses(host)[0].ToString();
NettyFullAddress remoteAddress = new NettyFullAddress(secure, host4Netty, port, host, proxy);
ExtendedNettyFullAddress extendedRemoteAddress = new ExtendedNettyFullAddress(remoteAddress, extraHeaders, cookies);
WebSocketChannelPool wsPool = (WebSocketChannelPool)wsPoolManager.get(extendedRemoteAddress);
IChannel ch = await wsPool.AcquireNewOr(timeout);
if (ch != null)
{
if (ch.Active)
{
this.channel = new MyChannel(ch, wsPool, networkListener);
WebSocketChannelHandler chHandler = new WebSocketChannelHandler(networkListener, channel);
PipelineUtils.populateWSPipeline(ch, chHandler);
networkListener.onOpen();
}
else
{
log.Error("WebSocket handshake error, ");
networkListener.onBroken();
}
}
else
{
log.Error("WebSocket handshake error, channel unexpectedly null");
networkListener.onBroken();
}
} catch (Exception e)
{
log.Error("WebSocket handshake error: " + e.Message);
networkListener.onBroken();
}
}
/// <summary>
/// Upgrade the channel to WebSocket.
/// </summary>
private void upgrade(ExtendedNettyFullAddress address)
{
/*
* ========================================= Note =================================================
* Operations on the channel must happen in the thread associated with the channel.
* Otherwise subtle bugs can appear.
* For example the method WebSocketClientHandshaker.finishHandshake can return before
* the method WebSocketClientHandshaker.handshake returns leaving the channel pipeline in a mess.
* ================================================================================================
*/
chnl.EventLoop.Execute(() =>
{
/*
* If the eventLoop is overloaded, when this task is executed the channel can be broken
* (for example because the server has closed it).
* So the first thing to do is to check if the channel is healthy.
*/
if (chnl.Active)
{
/* set cookies and extra headers */
string cookies = address.Cookies;
IDictionary <string, string> extraHeaders = address.ExtraHeaders;
DefaultHttpHeaders customHeaders = new DefaultHttpHeaders();
if (extraHeaders != null)
{
foreach (KeyValuePair <string, string> entry in extraHeaders)
{
customHeaders.Add(new AsciiString(entry.Key), entry.Value);
}
}
if (!string.ReferenceEquals(cookies, null) && cookies.Length > 0)
{
customHeaders.Set(HttpHeaderNames.Cookie, cookies);
}
/* build url */
NettyFullAddress remoteAddress = address.Address;
string scheme = remoteAddress.Secure ? "wss" : "ws";
string host = remoteAddress.Host;
string url;
int port = remoteAddress.Port;
if (host.Equals("::1"))
{
url = scheme + "://localhost:" + port + "/lightstreamer";
}
else
{
url = scheme + "://" + host + ":" + port + "/lightstreamer";
}
Uri uri = LsUtils.uri(url);
string subprotocol = Constants.TLCP_VERSION + ".lightstreamer.com";
/* build pipeline */
WebSocketHandshakeHandler wsHandshakeHandler = new WebSocketHandshakeHandler(uri, subprotocol, customHeaders, this);
PipelineUtils.populateWSPipelineForHandshake(chnl, wsHandshakeHandler);
/* WS handshake */
futureTask = wsHandshakeHandler.handshake(chnl);
}
else
{
futureTask = Task.Factory.StartNew(() => Thread.Sleep(2));
}
});
return;
}
