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
-
Follow the Get started guide to install K8sGateway, set up a gateway resource, and deploy the httpbin sample app.
-
Get the external address of the gateway and save it in an environment variable.
export INGRESS_GW_ADDRESS=$(kubectl get svc -n gloo-system gloo-proxy-http -o jsonpath="{.status.loadBalancer.ingress[0]['hostname','ip']}") echo $INGRESS_GW_ADDRESS
kubectl port-forward deployment/gloo-proxy-http -n gloo-system 8080:8080
Set up HTTP method matching
-
Create an HTTPRoute resource for the
match.example
domain that serves incoming GET requests for the httpbin app.kubectl apply -f- <<EOF apiVersion: gateway.networking.k8s.io/v1 kind: HTTPRoute metadata: name: httpbin-match namespace: httpbin spec: parentRefs: - name: http namespace: gloo-system hostnames: - match.example rules: - matches: - method: "GET" backendRefs: - name: httpbin port: 8000 EOF
-
Send a GET request to the httpbin app on the
match.example
domain. Verify that you get back a 200 HTTP response code.curl -vik http://$INGRESS_GW_ADDRESS:8080/get -H "host: match.example:8080"
curl -vik localhost:8080/get -H "host: match.example"
Example output:
* Mark bundle as not supporting multiuse < HTTP/1.1 200 OK 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 < date: Sat, 04 Nov 2023 03:34:12 GMT date: Sat, 04 Nov 2023 03:34:12 GMT < content-length: 422 content-length: 422 < x-envoy-upstream-service-time: 1 x-envoy-upstream-service-time: 1 < server: envoy server: envoy < { "args": {}, "headers": { "Accept": [ "*/*" ], "Host": [ "match.example:8080" ], "User-Agent": [ "curl/7.77.0" ], "X-Envoy-Expected-Rq-Timeout-Ms": [ "15000" ], "X-Forwarded-Proto": [ "http" ], "X-Request-Id": [ "6823bc28-ba8e-47df-a3a0-1aa21628db0e" ] }, "origin": "10.116.3.7:47022", "url": "http://match.example:8080/get" }
-
Send another request to the httpbin app on the
match.example
domain. This time, you use thePOST
method. Verify that your request is not forwarded to the httpbin app and that you get back a 404 HTTP response code.curl -vik -X POST http://$INGRESS_GW_ADDRESS:8080/post -H "host: match.example:8080"
curl -vik -X POST localhost:8080/post -H "host: match.example"
Example output:
* Mark bundle as not supporting multiuse < HTTP/1.1 404 Not Found HTTP/1.1 404 Not Found < date: Tue, 23 Apr 2024 18:47:53 GMT date: Tue, 23 Apr 2024 18:47:53 GMT < server: envoy server: envoy < content-length: 0 content-length: 0 ...
Cleanup
You can remove the resources that you created in this guide.kubectl delete httproute httpbin-match -n httpbin