SSL: corrected SSL_ERROR_WANT_WRITE / SSL_ERROR_WANT_READ logging. While SSL_read() most likely to return SSL_ERROR_WANT_WRITE (and SSL_write() accordingly SSL_ERROR_WANT_READ) during an SSL renegotiation, it is not necessary mean that a renegotiation was started. In particular, it can never happen during a renegotiation or can happen multiple times during a renegotiation. Because of the above, misleading "peer started SSL renegotiation" info messages were replaced with "SSL_read: want write" and "SSL_write: want read" debug ones. Additionally, "SSL write handler" and "SSL read handler" are now logged by the SSL write and read handlers, to make it easier to understand that temporary SSL handlers are called instead of normal handlers.

scgi_param  REQUEST_METHOD     $request_method;
scgi_param  REQUEST_URI        $request_uri;
scgi_param  QUERY_STRING       $query_string;
scgi_param  CONTENT_TYPE       $content_type;

scgi_param  DOCUMENT_URI       $document_uri;
scgi_param  DOCUMENT_ROOT      $document_root;
scgi_param  SCGI               1;
scgi_param  SERVER_PROTOCOL    $server_protocol;
scgi_param  REQUEST_SCHEME     $scheme;
scgi_param  HTTPS              $https if_not_empty;

scgi_param  REMOTE_ADDR        $remote_addr;
scgi_param  REMOTE_PORT        $remote_port;
scgi_param  SERVER_PORT        $server_port;
scgi_param  SERVER_NAME        $server_name;