nginx的那些内置变量

nginx在配置文件nginx.conf中可以使用很多内置变量，配置如下：

location /info {
    add_header 'Content-Type' 'text/html';
    echo "http_user_agent            :$http_user_agent         <br>";
    echo "http_cookie                :$http_cookie             <br>";
    echo "http_user_agent            :$http_user_agent         <br>";
    echo "http_cookie                :$http_cookie             <br>";
    echo "arg_name                   :$arg_name                <br>";
    echo "args                       :$args                    <br>";
    echo "binary_remote_addr         :$binary_remote_addr      <br>";
    echo "body_bytes_sent            :$body_bytes_sent         <br>";
    echo "bytes_sent                 :$bytes_sent              <br>";
    echo "connection                 :$connection              <br>";
    echo "connection_requests        :$connection_requests     <br>";
    echo "content_length             :$content_length          <br>";
    echo "content_type               :$content_type            <br>";
    echo "cookie_name                :$cookie_name             <br>";
    echo "document_root              :$document_root           <br>";
    echo "document_uri               :$document_uri            <br>";
    echo "uri                        :$uri                     <br>";
    echo "host                       :$host                    <br>";
    echo "hostname                   :$hostname                <br>";
    echo "http_name                  :$http_name               <br>";
    echo "https                      :$https                   <br>";
    echo "is_args                    :$is_args                 <br>";
    echo "limit_rate                 :$limit_rate              <br>";
    echo "msec                       :$msec                    <br>";
    echo "nginx_version              :$nginx_version           <br>";
    echo "pid                        :$pid                     <br>";
    echo "pipe                       :$pipe                    <br>";
    echo "proxy_protocol_addr        :$proxy_protocol_addr     <br>";
    echo "query_string               :$query_string            <br>";
    echo "realpath_root              :$realpath_root           <br>";
    echo "remote_addr                :$remote_addr             <br>";
    echo "remote_port                :$remote_port             <br>";
    echo "remote_user                :$remote_user             <br>";
    echo "request                    :$request                 <br>";
    echo "request_body               :$request_body            <br>";
    echo "request_body_file          :$request_body_file       <br>";
    echo "request_completion         :$request_completion      <br>";
    echo "request_filename           :$request_filename        <br>";
    echo "request_length             :$request_length          <br>";
    echo "request_method             :$request_method          <br>";
    echo "request_time               :$request_time            <br>";
    echo "request_uri                :$request_uri             <br>";
    echo "scheme                     :$scheme                  <br>";
    echo "sent_http_name             :$sent_http_name          <br>";
    echo "server_addr                :$server_addr             <br>";
    echo "server_name                :$server_name             <br>";
    echo "server_port                :$server_port             <br>";
    echo "server_protocol            :$server_protocol         <br>";
    echo "status                     :$status                  <br>";
    echo "tcpinfo_rtt                :$tcpinfo_rtt             <br>";
    echo "tcpinfo_rttvar             :$tcpinfo_rttvar          <br>";
    echo "tcpinfo_snd_cwnd           :$tcpinfo_snd_cwnd        <br>";
    echo "tcpinfo_rcv_space          :$tcpinfo_rcv_space       <br>";
    echo "tcpinfo_rtt                :$tcpinfo_rtt             <br>";
    echo "tcpinfo_rttvar             :$tcpinfo_rttvar          <br>";
    echo "tcpinfo_snd_cwnd           :$tcpinfo_snd_cwnd        <br>";
    echo "tcpinfo_rcv_space          :$tcpinfo_rcv_space       <br>";
    echo "tcpinfo_rtt                :$tcpinfo_rtt             <br>";
    echo "tcpinfo_rttvar             :$tcpinfo_rttvar          <br>";
    echo "tcpinfo_snd_cwnd           :$tcpinfo_snd_cwnd        <br>";
    echo "tcpinfo_rcv_space          :$tcpinfo_rcv_space       <br>";
    echo "tcpinfo_rtt                :$tcpinfo_rtt             <br>";
    echo "tcpinfo_rttvar             :$tcpinfo_rttvar          <br>";
    echo "tcpinfo_snd_cwnd           :$tcpinfo_snd_cwnd        <br>";
    echo "tcpinfo_rcv_space          :$tcpinfo_rcv_space       <br>";
    echo "time_iso8601               :$time_iso8601            <br>";
    echo "time_local                 :$time_local              <br>";
    echo "uri                        :$uri                     <br>";
}

测试结果如下：

http://127.0.0.1/info?a=1&b=2

http_user_agent :Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.104 Safari/537.36 
http_user_agent :Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.104 Safari/537.36 
arg_name : 
args :a=1&b=2 
binary_remote_addr :�w� 
body_bytes_sent :0 
bytes_sent :0 
connection :6 
connection_requests :2 
content_length : 
content_type : 
cookie_name : 
document_root :/opt/openresty/nginx/html
document_uri :/info
uri :/info
http_name : 
https : 
is_args :? 
limit_rate :0 
msec :1450346470.512 
nginx_version :1.9.3 
pid :8161 
pipe :. 
proxy_protocol_addr : 
query_string :a=1&b=2 
realpath_root :/opt/openresty/nginx/html
remote_addr :127.0.0.1
remote_port :57621 
remote_user : 
request :GET /info?a=1&b=2 HTTP/1.1 
request_body : 
request_body_file : 
request_completion : 
request_filename :/opt/openresty/nginx/html/info
request_length :391 
request_method :GET 
request_time :0.000 
request_uri :/info?a=1&b=2 
scheme :http 
sent_http_name : 
server_addr :127.0.0.1
server_name :localhost 
server_port :80 
server_protocol :HTTP/1.1 
status :200 
tcpinfo_rtt :73750 
tcpinfo_rttvar :99500 
tcpinfo_snd_cwnd :10 
tcpinfo_rcv_space :14480 
tcpinfo_rtt :73750 
tcpinfo_rttvar :99500 
tcpinfo_snd_cwnd :10 
tcpinfo_rcv_space :14480 
tcpinfo_rtt :73750 
tcpinfo_rttvar :99500 
tcpinfo_snd_cwnd :10 
tcpinfo_rcv_space :14480 
tcpinfo_rtt :73750 
tcpinfo_rttvar :99500 
tcpinfo_snd_cwnd :10 
tcpinfo_rcv_space :14480 
time_iso8601 :2015-12-17T18:01:10+08:00 
time_local :17/Dec/2015:18:01:10 +0800 
uri :/info