HTTP method

Specify an HTTP method, such as POST, GET, PUT, PATCH, or DELETE, to match requests against.

For more information, see the Kubernetes Gateway API documentation.

Before you begin

1. Set up an agentgateway proxy.
2. Install the httpbin sample app.

Set up HTTP method matching

1. Create an HTTPRoute resource for the match.example domain that serves incoming GET requests for the httpbin app.

   kubectl apply -f- <<EOF
   apiVersion: gateway.networking.k8s.io/v1
   kind: HTTPRoute
   metadata:
     name: httpbin-match
     namespace: httpbin
   spec:
     parentRefs:
       - name: agentgateway-proxy
         namespace: agentgateway-system
     hostnames:
       - match.example
     rules:
       - matches:
         - method: "GET"
         backendRefs:
           - name: httpbin
             port: 8000
   EOF

2. Send a GET request to the httpbin app on the match.example domain. Verify that you get back a 200 HTTP response code.

   Cloud Provider LoadBalancerPort-forward for local testing

   curl -vi http://$INGRESS_GW_ADDRESS:80/get -H "host: match.example"

   curl -vi localhost:8080/get -H "host: match.example"

   Example output:

   HTTP/1.1 200 OK
   < access-control-allow-credentials: true
   access-control-allow-credentials: true
   < access-control-allow-origin: *
   access-control-allow-origin: *
   < content-type: application/json; encoding=utf-8
   content-type: application/json; encoding=utf-8
   < content-length: 322
   content-length: 322
   < 
   
   {
     "args": {},
     "headers": {
       "Accept": [
         "*/*"
      ],
       "Host": [
         "match.example"
       ],
       "Traceparent": [
         "00-30f560cded924883c1eebfecfd8a8367-3eedcde5b0a6924f-01"
       ],
       "User-Agent": [
         "curl/8.7.1"
       ]
     },
     "origin": "10.xxx.x.xx:55304",
     "url": "http://match.example/get"
   }

3. Send another request to the httpbin app on the match.example domain. This time, you use the POST method. Verify that your request is not forwarded to the httpbin app and that you get back a 404 HTTP response code.

   Cloud Provider LoadBalancerPort-forward for local testing

   curl -vi -X POST http://$INGRESS_GW_ADDRESS:80/post -H "host: match.example" 

   curl -vi -X POST localhost:8080/post -H "host: match.example"

   Example output:

   < HTTP/1.1 404 Not Found
   HTTP/1.1 404 Not Found
   < content-length: 9
   content-length: 9
   < content-type: text/plain; charset=utf-8
   content-type: text/plain; charset=utf-8

Cleanup

kubectl delete httproute httpbin-match -n httpbin