windows 连接后如何终止 OpenSSL s_client
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How to terminate OpenSSL s_client after connection
提问by KenD
(Reviewers: I also know this is straying into SuperUser territory, but if the previous question snuck through ... :) )
（评论者：我也知道这是进入超级用户领域，但如果前一个问题偷偷通过...... :)）
This is very similar to this question, but in an Windows (7/8/Server 2008/2012) environment: I'm using the Windows port of OpenSSL.
这与此问题非常相似，但在 Windows (7/8/Server 2008/2012) 环境中：我使用的是 OpenSSL 的 Windows 端口。
I'm running
我在跑
openssl s_client -connect 192.168.0.1:443
openssl s_client -connect 192.168.0.1:443
from a command prompt, in order to show certificate information. However, openssl waits for user input afterwards; I can Ctrl+Cto "break" the output, or every just type a few characters and hit return, but I need to automate this - all I'm really interested in is the certificate information.
从命令提示符，以显示证书信息。但是，openssl 之后会等待用户输入；我可以Ctrl+C来“中断”输出，或者每次只输入几个字符并按回车键，但我需要自动执行此操作 - 我真正感兴趣的是证书信息。
As per the previous question, I need some way to terminate/close the connection. However, I've tried piping in input files, echoing/typeing input into the mix, and nothing seems to simulate a real user. Can anyone show me how to force openssl to exit after connecting?
根据上一个问题，我需要某种方式来终止/关闭连接。不过，我已经试过管道输入文件中，echo荷兰国际集团/type荷兰国际集团投入进来，但是没有一样能模拟真实用户。谁能告诉我如何在连接后强制 openssl 退出？
回答by Degenerate DevOps
You can achieve the desired effect by using a pipe to pass in the character "Q". This makes for a great one-liner for a script:
可以通过使用管道传入字符“Q”来达到想要的效果。这为脚本提供了一个很好的单行：
echo "Q" | openssl s_client -connect host:port
If you are using a sufficiently new version of BASH, you can also use the triple less-than redirect instead of piping (some times a pipe isn't usable since it operates on stdin/stdout):
如果您使用的是足够新版本的 BASH，您还可以使用三重小于重定向而不是管道（有时管道不可用，因为它在 stdin/stdout 上运行）：
openssl s_client -connect host:port <<< "Q"
回答by JSAnderson
Entering the letter 'Q' at the beginning of a blank line will end an active connection. I've seen s_client get into states where this does not do anything, but this is the documented way to quit a session.
在空行的开头输入字母“Q”将结束活动连接。我已经看到 s_client 进入了不做任何事情的状态，但这是退出会话的记录方式。
If you want to do this in batch mode, just create a text file with the letter 'Q' followed by a carriage return and direct it into the end of the command like so:
如果要在批处理模式下执行此操作，只需创建一个带有字母“Q”后跟回车符的文本文件，并将其定向到命令的末尾，如下所示：
openssl s_client -connect host:port < Q.txt
I tried this and it works.
我试过这个，它有效。
