Learned a lot more about Istio, Envoy, and TLS. 🤯
Specifically, I learned about alpn, how Istio configures Envoy to route based on it, and how it can be set using OpenSSL's s_client. My path ultimately led to this... 😂
alpn
s_client
echo -e "GET /headers HTTP/1.1\r\nHost: s-07a0552a-e09a-4ac7-a4b7-f036921f99d7.cf-workloads.svc.cluster.local\r\n" | openssl s_client -quiet -CAfile /etc/certs/root-cert.pem -cert /etc/certs/cert-chain.pem -key /etc/certs/key.pem -servername s-07a0552a-e09a-4ac7-a4b7-f036921f99d7.cf-workloads.svc.cluster.local -connect s-07a0552a-e09a-4ac7-a4b7-f036921f99d7.cf-workloads.svc.cluster.local:8080 -alpn istio
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Learned a lot more about Istio, Envoy, and TLS. 🤯
Specifically, I learned about
alpn
, how Istio configures Envoy to route based on it, and how it can be set using OpenSSL'ss_client
. My path ultimately led to this... 😂