feat(vars): add http_via to indexed variables

Author: bungle

README.md

@@ -101,6 +101,7 @@ index *commonly used variables* as follows:
 - `$http_proxy_connection`
 - `$http_te`
 - `$http_upgrade`
+- `$http_via`
 - `$http_x_forwarded_for`
 - `$http_x_forwarded_host`
 - `$http_x_forwarded_path`

src/ngx_http_lua_kong_var_index.c

@@ -35,6 +35,7 @@ static ngx_str_t default_vars[] = {
     ngx_string("http_proxy_connection"),
     ngx_string("http_te"),
     ngx_string("http_upgrade"),
+    ngx_string("http_via"),
 
     /* http request headers */
     ngx_string("http_x_forwarded_for"),
@@ -333,5 +334,3 @@ ngx_http_lua_kong_ffi_var_set_by_index(ngx_http_request_t *r, ngx_uint_t index,
     *err = "no memory";
     return NGX_ERROR;
 }
-
-

t/006-default_indexed-var.t

@@ -9,7 +9,7 @@ use Test::Nginx::Socket::Lua;
 
 repeat_each(2);
 
-plan tests => repeat_each() * (blocks() * 8) - 10;
+plan tests => repeat_each() * (blocks() * 8) - 8;
 
 $ENV{TEST_NGINX_HTML_DIR} ||= html_dir();
 
@@ -117,7 +117,8 @@ get variable value '/test' by index
                     ngx.var.http_proxy, " ",
                     ngx.var.http_proxy_connection, " ",
                     ngx.var.http_te, " ",
-                    ngx.var.http_upgrade
+                    ngx.var.http_upgrade, " ",
+                    ngx.var.http_via
                     )
         }
     }
@@ -132,8 +133,9 @@ proxy: 111
 proxy-connection: 222
 te: 333
 upgrade: 444
+via: 1.1 kong
 --- response_body
-auth close test.com 1 111 222 333 444
+auth close test.com 1 111 222 333 444 1.1 kong
 --- error_log
 get variable value 'auth' by index
 get variable value 'close' by index
@@ -143,6 +145,7 @@ get variable value '111' by index
 get variable value '222' by index
 get variable value '333' by index
 get variable value '444' by index
+get variable value '1.1 kong' by index
 --- no_error_log
 [error]
 [crit]