nginx：如何记录TLS错误(如果不支持的密码/协议)

我正在切换到100％https.
服务器正在运行nginx libressl.

在开始之前https：100％我有兴趣看到哪些客户端无法再连接到我的网站.
例如.因为我不支持SSL3.

我检查了nginx错误和访问日志,但如果我尝试连接SSL3,则没有包含有价值的信息.

我希望看到的内容：例如：

Client [IP]: Connection failed due to protocol/cipher mismatch.

然后,我将能够访问该访问/错误日志,并查看有多少客户端无法再访问我的站点.

这可能吗？

目前的nginx.conf：

user                        www-data www-data;

pid                         /run/nginx.pid;

worker_processes            auto;
worker_rlimit_nofile        100000;

error_log                   /var/log/nginx/error.log;

events {
    worker_connections      2048;
    use                     epoll;
    multi_accept            on;
}

http {
    server_tokens           off;
    autoindex               off;
    charset                 UTF-8;

    include                 mime.types;
    default_type            application/octet-stream;

    log_format              main '$host - $remote_addr - $remote_user [$time_local] "$request" '
                                 '$status $body_bytes_sent "$http_referer" '
                                 '"$http_user_agent" "$http_x_forwarded_for"';
    access_log              /var/log/nginx/access.log main;

    keepalive_timeout       10;

    reset_timedout_connection   on;
    client_body_timeout         10;
    send_timeout                10;

    client_max_body_size    512k;

    sendfile                on;
    tcp_nopush              on;
    tcp_nodelay             on;

    server {
        listen              80;
        server_name         domain.com www.domain.com;
        return              301 https://www.domain.com$request_uri;
    }

    server {
        listen              443 ssl spdy;
        server_name         domain.com;

        include             conf.d/ssl.conf;

        return              301 https://www.domain.com$request_uri;
    }

    server {
        listen              443 ssl spdy;
        server_name         www.domain.com;
        root                /var/www/vhosts/domain.com/public_html;

        include             conf.d/ssl.conf;

        default_type        text/html;

        location / {
            return 200 'Hello World!';
        }
    }
}

conf.d / ssl.conf中：

ssl                         on;

ssl_dhparam                 ssl/dhparam4096.pem;

ssl_session_cache           shared:SSL:10m;
ssl_session_timeout         10m;
ssl_buffer_size             1400;
spdy_headers_comp           6;
add_header                  Alternate-Protocol 443:npn-spdy/3;

ssl_protocols               TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers                 "AES256+EECDH:AES256+EDH";
ssl_prefer_server_ciphers   on;
ssl_ecdh_curve              secp384r1;

add_header                  X-Frame-Options DENY;
add_header                  X-Content-Type-Options nosniff;
add_header                  Strict-Transport-Security "max-age=31536000; includeSubDomains";

ssl_certificate             ssl/public.crt;
ssl_certificate_key         ssl/private.key;

ssl_stapling                on;
ssl_stapling_verify         on;
ssl_trusted_certificate     ssl/ca-certs.pem;
resolver                    8.8.8.8 valid=300s;
resolver_timeout            10s;