default this will be <b>SSL_AD_UNKNOWN_PSK_IDENTITY</b>.</p>

<p>The SSL_CTX_set_srp_client_pwd_callback() function sets the client password callback on the client. The callback parameters are the SSL connection <b>s</b> and the extra argument <b>arg</b> set by SSL_CTX_set_srp_cb_arg(). The callback will be called as part of the generation of the client secrets. It should return the client password in text form or NULL to abort the connection. The resulting memory will be freed by the library as part of the