connect_async
Description:
[ Version ( since = "2.62" ) ]
public async IOStream connect_async (URI uri, Cancellable? cancellable, SessionConnectProgressCallback? progress_callback) throws Error
  public async IOStream connect_async (URI uri, Cancellable? cancellable, SessionConnectProgressCallback? progress_callback) throws Error
Start a connection to uri.
 The operation can be monitored by providing a progress_callback and finishes when the connection is done or an error ocurred.
Call connect_async.end to get the IOStream to communicate with the server.
Parameters:
| this | 
           a Session  | 
      
| uri | 
           a URI to connect to  | 
      
| cancellable | |
| progress_callback | 
           a SessionConnectProgressCallback which will be called for every network event that occurs during the connection.  | 
      
| callback | 
           the callback to invoke when the operation finishes  | 
      
| user_data | 
           data for   |