TLS 1.3 Early data

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Hello,

I did few experiments with early data but was not successful in solving my
exotic use case: "Using early data dependent on the SNI"

I control the server (linux, supports http2) based on OpenSSL 111q and use a
recent firefox as client:

1) Setting SSL_CTX_set_max_early_data in the SSL_CTX* works (FF sends early data)
2) Setting SSL_set_max_early_data on the just created SSL* works (FF sends early
data)
3) Setting SSL_set_max_early_data in the SNI callback during the handshake does
not work (FF does not send early data)

I guess there is a dirty way to "peek" into the client hello and parse it
without OpenSSL, extracting the SNI and make it then like in 2), but I wonder if
there is a better way.

Any idea?

Thanks
Dirk






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