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crypto/tls: add Raw to ClientHelloInfo #32936

phuslu opened this issue Jul 4, 2019 · 1 comment

crypto/tls: add Raw to ClientHelloInfo #32936

phuslu opened this issue Jul 4, 2019 · 1 comment


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@phuslu phuslu commented Jul 4, 2019

Similar awslabs/s2n#607, Having access to raw ClientHello can be useful for fingerprinting clients [1] for further analysis.
Plus, With raw ClientHello message, we could also implements SNI Proxy in tls.Config.GetConfigForClient [2] , e.g. tlsrouter [3] more easily.
In openssl this can be done by setting up callback through SSL_CTX_set_msg_callback.
Would be nice to have similar ability for golang crypto.



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@bcmills bcmills commented Jul 8, 2019

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