SilcBool silc_client_init(SilcClient client, const char *username,
                              const char *hostname, const char *realname,
                              SilcClientRunning running, void *context);

    Initializes the client. This makes all the necessary steps to make
    the client ready to be run. One must call silc_client_run to run the
    client. Returns FALSE if error occurred, TRUE otherwise.

    The `username' and `hostname' strings must be given and they must be
    UTF-8 encoded.  The `username' is the client's username in the
    operating system, `hostname' is the client's host name and the
    `realname' is the user's real name.

    The `running' callback with `context' is called after the client is
    running after silc_client_run or silc_client_run_one has been called.
    Application may start using the Client library API after that.  Setting
    the callback is optional, but highly recommended.