Update synopsis

1 files changed, 33 insertions, 2 deletions

diff --git a/README.md b/README.md
index 3fdae66..3db377d 100644
--- a/README.md
+++ b/README.md
@@ -32,14 +32,45 @@ Synopsis
                 return
             end
 
-            local field = cookie:get("lang")
+            -- get single cookie
+            local field, err = cookie:get("lang")
+            if not field then
+                ngx.log(ngx.ERR, err)
+                return
+            end
             ngx.say("lang", " => ", field)
 
-            local fields = cookie:get_all()
+            -- get all cookies
+            local fields, err = cookie:get_all()
+            if not fields then
+                ngx.log(ngx.ERR, err)
+                return
+            end
 
             for k, v in pairs(fields) do
                 ngx.say(k, " => ", v)
             end
+
+            -- set one cookie
+            local ok, err = cookie:set({
+                key = "Name", value = "Bob", path = "/",
+                domain = "example.com", secure = true, httponly = true,
+                expires = "Wed, 09 Jun 2021 10:18:14 GMT", max_age = 50,
+                extension = "a4334aebaec"
+            })
+            if not ok then
+                ngx.log(ngx.ERR, err)
+                return
+            end
+
+            -- set another cookie, both cookies will appear in HTTP response
+            local ok, err = cookie:set({
+                key = "Age", value = "20",
+            })
+            if not ok then
+                ngx.log(ngx.ERR, err)
+                return
+            end
         }
     }