December 22th Tuesday 2009

最新推荐文章于 2017-03-02 14:40:00 发布

原创最新推荐文章于 2017-03-02 14:40:00 发布 · 846 阅读

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文章标签：

#function #parsing #module #merge #buffer #nginx

本文介绍了Nginx中邮件模块的配置文件解析过程。详细分析了ngx_mail_block()函数的作用，包括分配缓冲区、调用钩子函数及初始化配置等步骤。特别关注了ngx_mail_optimize_servers()函数中监听器的创建及其连接初始化函数ngx_mail_init_connection的设置。

In nginx, during parsing the configure file the function ngx_mail_block() is called. The function ngx_mail_block() allocate buffer for main configure information and server configure information. At one time the create_main_conf() and the create_srv_conf() hooks in all mail module are invoked. And so on, the init_main_conf() and the merge_srv_conf() are both called. At the end of the function ngx_mail_block(), ngx_mail_optimize_servers() is called.

In the function ngx_mail_optimize_servers(), the following code is so important.

...

            ls = ngx_create_listening(cf, addr[i].sockaddr, addr[i].socklen);
            if (ls == NULL) {
                return NGX_CONF_ERROR;
            }

            ls->addr_ntop = 1;
            ls->handler = ngx_mail_init_connection;
            ls->pool_size = 256;

...

The ngx_mail_init_connection() is set. OK. The function ngx_mail_init_connection() is started for a connection.

The above is for the mail module. The http module is similar to it.