Nginx 的ngx_http_phases

typedef enum {
    //http头接收完
    NGX_HTTP_POST_READ_PHASE = 0,
    //URL rewrite，在查询URI之前
    NGX_HTTP_SERVER_REWRITE_PHASE,
    //根据URI查找location,ngx_http_core_module模块实现。
    NGX_HTTP_FIND_CONFIG_PHASE,
   //NGX_HTTP_FIND_CONFIG_PHASE后，重写URI
    NGX_HTTP_REWRITE_PHASE,
   //跳回NGX_HTTP_FIND_CONFIG_PHASE，重新查找location，ngx_http_core_module模块实现
    NGX_HTTP_POST_REWRITE_PHASE,
    //NGX_HTTP_ACCESS_PHASE前，http介入处理的阶段
    NGX_HTTP_PREACCESS_PHASE,
   //是否允许访问nginx服务器
    NGX_HTTP_ACCESS_PHASE,
   //构造拒绝访问http响应
    NGX_HTTP_POST_ACCESS_PHASE,
   //try_files使用
    NGX_HTTP_TRY_FILES_PHASE,
   //http内容处理阶段
    NGX_HTTP_CONTENT_PHASE,
   //http纪录access_log日志，ngx_http_log_module模块处理
    NGX_HTTP_LOG_PHASE
} ngx_http_phases;