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  • Nginx 的 Echo 模块 —— echo-nginx-module(转)

    Nginx 有个 echo 模块可以用来输出一些简单的信息,例如:

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    location /hello {
      echo "hello, world!";
    }
     
    location /hello {
      echo -n "hello, "
      echo "world!";
    }
     
    location /timed_hello {
      echo_reset_timer;
      echo hello world;
      echo "'hello world' takes about $echo_timer_elapsed sec.";
      echo hiya igor;
      echo "'hiya igor' takes about $echo_timer_elapsed sec.";
    }
     
    location /echo_with_sleep {
      echo hello;
      echo_flush;  # ensure the client can see previous output immediately
      echo_sleep   2.5;  # in sec
      echo world;
    }
     
    # in the following example, accessing /echo yields
    #   hello
    #   world
    #   blah
    #   hiya
    #   igor
    location /echo {
        echo_before_body hello;
        echo_before_body world;
        proxy_pass $scheme://127.0.0.1:$server_port$request_uri/more;
        echo_after_body hiya;
        echo_after_body igor;
    }
    location /echo/more {
        echo blah;
    }
     
    # the output of /main might be
    #   hello
    #   world
    #   took 0.000 sec for total.
    # and the whole request would take about 2 sec to complete.
    location /main {
        echo_reset_timer;
     
        # subrequests in parallel
        echo_location_async /sub1;
        echo_location_async /sub2;
     
        echo "took $echo_timer_elapsed sec for total.";
    }
    location /sub1 {
        echo_sleep 2;
        echo hello;
    }
    location /sub2 {
        echo_sleep 1;
        echo world;
    }
     
    # the output of /main might be
    #   hello
    #   world
    #   took 3.003 sec for total.
    # and the whole request would take about 3 sec to complete.
    location /main {
        echo_reset_timer;
     
        # subrequests in series (chained by CPS)
        echo_location /sub1;
        echo_location /sub2;
     
        echo "took $echo_timer_elapsed sec for total.";
    }
    location /sub1 {
        echo_sleep 2;
        echo hello;
    }
    location /sub2 {
        echo_sleep 1;
        echo world;
    }
     
    # Accessing /dup gives
    #   ------ END ------
    location /dup {
      echo_duplicate 3 "--";
      echo_duplicate 1 " END ";
      echo_duplicate 3 "--";
      echo;
    }
     
    # /bighello will generate 1000,000,000 hello's.
    location /bighello {
      echo_duplicate 1000_000_000 'hello';
    }
     
    # echo back the client request
    location /echoback {
      echo_duplicate 1 $echo_client_request_headers;
      echo " ";
     
      echo_read_request_body;
     
      echo_request_body;
    }
     
    # GET /multi will yields
    #   querystring: foo=Foo
    #   method: POST
    #   body: hi
    #   content length: 2
    #   ///
    #   querystring: bar=Bar
    #   method: PUT
    #   body: hello
    #   content length: 5
    #   ///
    location /multi {
        echo_subrequest_async POST '/sub' -q 'foo=Foo' -b 'hi';
        echo_subrequest_async PUT '/sub' -q 'bar=Bar' -b 'hello';
    }
    location /sub {
        echo "querystring: $query_string";
        echo "method: $echo_request_method";
        echo "body: $echo_request_body";
        echo "content length: $http_content_length";
        echo '///';
    }
     
    # GET /merge?/foo.js&/bar/blah.js&/yui/baz.js will merge the .js resources together
    location /merge {
        default_type 'text/javascript';
        echo_foreach_split '&' $query_string;
            echo "/* JS File $echo_it */";
            echo_location_async $echo_it;
            echo;
        echo_end;
    }
     
    # accessing /if?val=abc yields the "hit" output
    # while /if?val=bcd yields "miss":
    location ^~ /if {
        set $res miss;
        if ($arg_val ~* '^a') {
            set $res hit;
            echo $res;
        }
        echo $res;
    }

    这个模块不包含在 Nginx 源码中,安装方法:

    1. 首先下载模块源码:https://github.com/agentzh/echo-nginx-module/tags
    2. 解压到某个路径,假设为 /path/to/echo-nginx-module
    3. 使用下面命令编译并安装 Nginx

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    $ wget 'http://sysoev.ru/nginx/nginx-1.0.11.tar.gz'
    $ tar -xzvf nginx-1.0.11.tar.gz
    $ cd nginx-1.0.11/
     
    # Here we assume you would install you nginx under /opt/nginx/.
    $ ./configure --prefix=/opt/nginx
    --add-module=/path/to/echo-nginx-module
     
    $ make -j2
    $ make install

    试试看吧,该模块是国人 @章亦春 开发的。

    http://www.oschina.net/question/12_45735?fromerr=jyurMByB

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  • 原文地址:https://www.cnblogs.com/softidea/p/5679743.html
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