stands:</p><ul><li>HTTP, which includes HTTP/1.1, HTTP/2, and gRPC. Note that this does not include TLS encrypted traffic (HTTPS).</li><li>TLS, which includes HTTPS.</li><li>Raw TCP bytes.</li></ul><p>The <a href=/v1.12/docs/ops/configuration/traffic-management/protocol-selection/>protocol selection</a> document describes how Istio decides which protocol is used.</p><p>The use of &ldquo;TCP&rdquo; can be confusing, as in other contexts it is used to distinguish between other L4 protocols, such as UDP.
When 