How to route all traffic to a service in Istio?

I have a virtual service yaml file with below lines.

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: nodeserver
spec:
  hosts:
  - "*"
  gateways:
  - node-gateway
  http:
  - match:
    - uri:
        exact: /
    - uri:
        exact: /sample1
    - uri:
        exact: /sample2
    route:
    - destination:
        host: node-service
        port:
          number: 8080

Here, Instead of /sample1 and /sample2 as two url matches, can I assign something like * to route all traffic to node-service by default? Also, if the webpage has hyperlinks inside it will Istio redirect them by default or need to add any custom configuration for that?

Use prefix: ''

This worked for me:

  http:
  - match:
      - uri:
          prefix: ''

You can use regex instead of exact in HTTPMatchRequest.
That way you can catch all with ECMAscript style regex.

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: nodeserver
spec:
  hosts:
  - "*"
  gateways:
  - node-gateway
  http:
  - match:
    - uri:
        regex: '.+'
    route:
    - destination:
        host: node-service
        port:
          number: 8080