Routing based on ALPN

[Wiktor Kwapisiewicz]

>> Is there a way to access and save ALPN value to a variable?
> 
> It should possible to parse the incoming buffer with https://nginx.org/r/js_filter and create a variable to make a routing decision on.
> 

Excellent idea for quickly solving this problem, thanks!

Would a long term solution involve creating a new, additional variable
in the ssl_preread module (e.g. ssl_preread_alpn)?

I've seen something similar being done by HAProxy (ssl_fc_alpn [1]).

Kind regards,
Wiktor


[1]: https://cbonte.github.io/haproxy-dconv/1.8/configuration.html#7.3.4-ssl_fc_alpn

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