SilcAsyncOperation silc_net_tcp_connect(const char *local_ip_addr,
                                            const char *remote_ip_addr,
                                            int remote_port,
                                            SilcSchedule schedule,
                                            SilcNetCallback callback,
                                            void *context);

    Creates TCP/IP connection to the remote host indicated by `remote_host'
    which may be hostname or IP address, on the port indicated by
    `remote_port'.  If the `local_ip_addr' is provided the local host is
    bound to that address before creating the connection.  This is
    asynchronous call, and this function returns before the connection is
    actually established.  The `callback' will be called after the
    connection is created to deliver the SilcStream for the created
    connection.  This function supports IPv6 if the platform supports it.

    The returned SilcAsyncOperation context can be used to control the
    asynchronous connecting, such as to abort it.  If it is aborted
    using silc_async_abort the `callback' will not be called.  If NULL
    is returned the operation cannot be aborted.