Listeners for your VPC Lattice service - Amazon VPC Lattice
Listener configuration

Listeners for your VPC Lattice service

Before you start using your VPC Lattice service, you must add a listener. A listener is a process that checks for connection requests, using the protocol and port that you configure. The rules that you define for a listener determine how the service routes requests to its registered targets.

A service with a listener, listener rules, and two target groups.
Contents

Listener configuration

Listeners support the following protocols and ports:

  • Protocols: HTTP, HTTPS, TLS

  • Ports: 1-65535

If the listener protocol is HTTPS, VPC Lattice will provision and manage a TLS certificate that is associated with the VPC Lattice generated FQDN. VPC Lattice supports TLS on HTTP/1.1 and HTTP/2. When you configure a service with an HTTPS listener, VPC Lattice will automatically determine the HTTP protocol using Application-Layer Protocol Negotiation (ALPN). If ALPN is absent, VPC Lattice defaults to HTTP/1.1. For more information, see HTTPS listeners.

VPC Lattice can listen on HTTP, HTTPS, HTTP/1.1, and HTTP/2 and communicate to targets in any of these protocols and versions. We do not require that the listener and target group protocols match. VPC Lattice manages the entire process of upgrading and downgrading between protocols and versions. For more information, see Protocol version.

You can create a TLS listener to ensure that your application decrypts the encrypted traffic instead of VPC Lattice. For more information, see TLS listeners.

VPC Lattice does not support WebSockets.