fix: error occurs if the opt.vars is not passed (#146)

Signed-off-by: xuruidong <[email protected]>

Author: xuruidong

lib/resty/radixtree.lua

@@ -749,7 +749,7 @@ local function match_route_opts(route, opts, args)
             local len = #hosts
             for i = 1, len, 2 do
                 if str_find(hosts[i+1], ":", 1, true) then
-                    if opts.vars.http_host then
+                    if opts.vars and opts.vars.http_host then
                         host = opts.vars.http_host
                     end
                 else

t/add.t

@@ -221,3 +221,30 @@ GET /t
 --- response_body
 pass
 true
+
+
+
+=== TEST 7: match failed if http_host is not passed
+--- config
+    location /t {
+        content_by_lua_block {
+            local opts = {host = "127.0.0.1"}
+            local radix = require("resty.radixtree")
+            local rx = radix.new({
+                {
+                    paths = {"/aa*"},
+                    hosts = {"127.0.0.1:9080"},
+                    handler = function (ctx)
+                        ngx.say("pass")
+                    end
+                }
+            })
+            ngx.say(rx:dispatch("/aa", opts))
+        }
+    }
+--- request
+GET /t
+--- no_error_log
+[error]
+--- response_body
+nil