ngx_ssl_free_buffer  200 src/event/ngx_event_openssl.h void ngx_ssl_free_buffer(ngx_connection_t *c);
ngx_ssl_free_buffer 2990 src/http/ngx_http_request.c         ngx_ssl_free_buffer(c);
ngx_ssl_free_buffer  841 src/http/ngx_http_spdy.c         ngx_ssl_free_buffer(c);