added echo_before_body and echo_after_body to the directive list in R…

…EADME.

README

@@ -59,15 +59,28 @@ This is a sample configuration snippet in your nginx.conf file:
                 echo_sleep 0.02;
                 echo "$echo_timer_elapsed sec elapsed.";
             }
+
+            location /filtered {
+                echo_before_body hello;
+                echo_before_body world;
+                proxy_pass http://127.0.0.1:$server_port$request_uri/more;
+                echo_after_body hiya;
+                echo_after_body igor;
+            }
+            location /filtered/more {
+                echo more...;
+            }
+
             ...
         }
         ...
     }
 
 As you can see, the directives currently provided by this module are
 "echo", "echo_client_request_headers", "echo_sleep", "echo_flush",
-and "echo_reset_timer". And there's also an "echo_blocking_sleep"
-directive for completeness.
+"echo_reset_timer", "echo_before_body", and "echo_after_body".
+
+And there's also an "echo_blocking_sleep" directive for completeness.
 
 The "echo_sleep" directive is a non-blocking sleep on the server side. So if your
 nginx worker process is "sleeping" for one request, it could serve other requests
@@ -114,6 +127,13 @@ After starting the nginx server, one can query it these ways:
     0.032 sec elapsed.
     0.020 sec elapsed.
 
+    $ curl 'http://localhost:8080/filtered'
+    hello
+    world
+    more...
+    hiya
+    igor
+
 Variables
 
 This module implements the $echo_timer_elapsed variable.

test/t/echo-after-body.t

@@ -29,7 +29,7 @@ hello
 --- config
     location /echo {
         echo_after_body hello;
-        proxy_pass $request_uri/more;
+        proxy_pass http://127.0.0.1:$server_port$request_uri/more;
     }
     location /echo/more {
         echo world
@@ -135,3 +135,26 @@ hiya
 world
 igor
 
+
+=== TEST 2: echo around proxy
+--- config
+    location /echo {
+        echo_before_body hello;
+        echo_before_body world;
+        #echo $scheme://$host:$server_port$request_uri/more;
+        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;
+    }
+--- request
+    GET /echo
+--- response_body
+hello
+world
+blah
+hiya
+igor
+