typedef struct { ... } SilcClientConnectionParams;

    Client connection parameters.  This can be filled by the application
    and given as argument to silc_client_connect_to_server or to
    silc_client_add_connection.

    typedef struct {
      /* The SILC session detachment data that was returned by `detach' client
         operation when the application detached from the network.  Application
         is responsible of saving the data and giving it as argument here
         for resuming the session in the SILC network.
    
         If this is provided here the client library will attempt to resume
         the session in the network.  After the connection is created
         successfully, the application is responsible of setting the user
         interface for user into the same state it was before detaching (showing
         same channels, channel modes, etc).  It can do this by fetching the
         information (like joined channels) from the client library. */
      unsigned char *detach_data;
      SilcUInt32 detach_data_len;
    
    } SilcClientConnectionParams;