Re: How to get SNI info from s_client debug logs?

["Salz, Rich via openssl-users" <openssl-users@xxxxxxxxxxx>]

The “server name” is something that the client sends to the server.

 

This allows a single host to server multiple “virtual hosts”

 

From: John Jiang <john.sha.jiang@xxxxxxxxx>
Reply-To: openssl-users <openssl-users@xxxxxxxxxxx>
Date: Sunday, November 26, 2017 at 9:59 PM
To: openssl-users <openssl-users@xxxxxxxxxxx>
Subject: [openssl-users] How to get SNI info from s_client debug logs?

 

Hi,
The following is my OpenSSL version info,
OpenSSL 1.1.0f  25 May 2017

I supposed the below command can give me some SNI info, but nothing was found.
openssl s_client -debug -tlsextdebug -msg -connect <host:port> -servername <server> < /dev/null | grep "server name"

But I found SNI extension with Wireshark while running the above command.

 

Is it possible get SNI info with s_client?

Thanks!

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