Nginx Practice in Windows - 2

Reference

Nginx 变量漫谈（二）
Nginx Embedded Variables

Practice

變數的有效範圍是 request, 所以就算不同 request 也可以使用變數

1. config nginx.conf
   

       server {
           listen       8080;
           server_name  localhost;
           location / {
               root   html;
               index  index.html index.htm;
           }
           location /test {
               set $foo "hello";
               rewrite ^ /test2;
           }
           location /test2 {
               return 200 "${foo} world";
           }
           error_page   500 502 503 504  /50x.html;
           location = /50x.html {
               root   html;
           }
       } 
   

2. run "nginx -s reload"
3. request "http://127.0.0.1:8080/test"
4. get response: hello world

使用 Nginx 內建變數

1. config nginx.conf

       server {
           listen       8080;
           server_name  localhost;
           location / {
               root   html;
               index  index.html index.htm;
           }
           location /test {
               return 200 "Your address:${remote_addr}:${remote_port}. nginx version:${nginx_version}. nginx pid:${pid}";
           }
           error_page   500 502 503 504  /50x.html;
           location = /50x.html {
               root   html;
           }
       } 
   

2. run "nginx -s reload"
3. request "http://127.0.0.1:8080/test"
4. get response: Your address:127.0.0.1:53102. nginx version:1.4.3. nginx pid:8132
5. run tasklist /fi "imagename eq nginx.exe"
   

   C:\nginx-1.4.3>tasklist /fi "imagename eq nginx.exe"
   
   映像名稱                       PID 工作階段名稱      工作階段 #    RAM使用量
   ========================= ======== ================ =========== ============
   nginx.exe                     4044 Console                    1      6,044 K
   nginx.exe                     8132 Console                    1      6,400 K
   

取得 request parameter value: ${arg_XXX}

1. Note: nginx 取 parameter 不分大小寫
2. config nginx.conf

       server {
           listen       8080;
           server_name  localhost;
           location / {
               root   html;
               index  index.html index.htm;
           }
           location /test {
        return 200 "The parameter abc value: ${arg_abc}";
           }
           error_page   500 502 503 504  /50x.html;
           location = /50x.html {
               root   html;
           }
       } 
   

3. run "nginx -s reload"
4. request "http://127.0.0.1:8080/test?abc=qq"
5. get response: The parameter abc value: qq
6. request "http://127.0.0.1:8080/test?Abc=qq"
7. get response: The parameter abc value: qq 

取得 header value: ${http_XXX}

1. config nginx.conf

       server {
           listen       8080;
           server_name  localhost;
           location / {
               root   html;
               index  index.html index.htm;
           }
           location /test {
               return 200 "The header 'abc' value: ${http_abc}";
           }
           error_page   500 502 503 504  /50x.html;
           location = /50x.html {
               root   html;
           }
       } 
   

2. run "nginx -s reload"
3. run "telnet 127.0.0.1 8080"
4. send request

   GET /test HTTP/1.1
   Host: 127.0.0.1:8080
   Connection: close
   User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36
   Accept: */*
   Accept-Encoding: gzip,deflate,sdch
   Accept-Language: zh-TW,zh;q=0.8,en-US;q=0.6,en;q=0.4
   ABC: 123
   

5. get response

   HTTP/1.1 200 OK
   Server: nginx/1.4.3
   Date: Sat, 19 Oct 2013 14:03:40 GMT
   Content-Type: application/octet-stream
   Content-Length: 27
   Connection: close
   
   The header 'abc' value: 123
   

取得 cookie value: ${cookie_XXX}

1. config nginx.conf

       server {
           listen       8080;
           server_name  localhost;
           location / {
               root   html;
               index  index.html index.htm;
           }
           location /test {
               return 200 "The cookie 'abc' value: ${cookie_abc}";
           }
           error_page   500 502 503 504  /50x.html;
           location = /50x.html {
               root   html;
           }
       } 
   

2. run "nginx -s reload"
3. run "telnet 127.0.0.1 8080"
4. send request

   GET /test HTTP/1.1
   Host: 127.0.0.1:8080
   Connection: close
   User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36
   Accept: */*
   Accept-Encoding: gzip,deflate,sdch
   Accept-Language: zh-TW,zh;q=0.8,en-US;q=0.6,en;q=0.4
   Cookie: ABC=123
   

5. get response

   HTTP/1.1 200 OK
   Server: nginx/1.4.3
   Date: Sat, 19 Oct 2013 14:09:30 GMT
   Content-Type: application/octet-stream
   Content-Length: 27
   Connection: close
   
   The cookie 'abc' value: 123