c - 获取 Apache C-Module 中的连接数

Question

如何获取打开的连接数(有多少个不同的浏览器正在尝试访问服务器)。我尝试查看每个函数处理程序中可用的结构request_rec。
request_rec->connection->conn_config 听起来像是最相关的字段(输入 ap_conf_vector_t 但我不知道如何从中获取信息。

谢谢!

Answer 1

没有专门的计数器。

您应该检查所有 apache 进程并根据其状态对它们进行计数，例如 mod_status做:

int server_limit, thread_limit;
int j, i, res;
int ready;
int busy;
worker_score *ws_record = apr_palloc(r->pool, sizeof *ws_record);
process_score *ps_record;

ap_mpm_query(AP_MPMQ_HARD_LIMIT_THREADS, &thread_limit);
ap_mpm_query(AP_MPMQ_HARD_LIMIT_DAEMONS, &server_limit);

ready = 0;
busy = 0;

for (i = 0; i < server_limit; ++i) {
    ps_record = ap_get_scoreboard_process(i);
    for (j = 0; j < thread_limit; ++j) {
        ap_copy_scoreboard_worker(ws_record, i, j);
        res = ws_record->status;

        if (!ps_record->quiescing
            && ps_record->pid) {
            if (res == SERVER_READY &&
                ps_record->generation == ap_my_generation)
                ready++;
            else if (res != SERVER_DEAD &&
                     res != SERVER_STARTING &&
                     res != SERVER_IDLE_KILL)
                busy++;
        }
    }
}