Feature #6133: SSLSocketをshutdownできない

• Status: Assigned
• Assignee: rhenium (Kazuki Yamaguchi)
• Target version: -

[kik (Masashi Kikuchi)]

http://www.openssl.org/docs/ssl/SSL_shutdown.html
に対応するメソッドがないので、送信の終わりを送れません。ただし微妙にshutdown(2)とインターフェースが違ってます。

[mame (Yusuke Endoh)]

• Status changed from Open to Assigned
• Assignee set to MartinBosslet (Martin Bosslet)
• Target version set to 2.0.0

Hello, emboss-san

This is a feature request for openssl.
OP wants a method to call SSL_shutdown to send the termination of a
transmission.

http://www.openssl.org/docs/ssl/SSL_shutdown.html

What do you think?

Note that there is a subtle difference between the API and shutdown(2).
As you may know.

Thanks,

--
Yusuke Endoh [e-mail]

[MartinBosslet (Martin Bosslet)]

mame (Yusuke Endoh) wrote:

Hello, emboss-san

This is a feature request for openssl.
OP wants a method to call SSL_shutdown to send the termination of a
transmission.

http://www.openssl.org/docs/ssl/SSL_shutdown.html

What do you think?

Hello Yusuke,
thank you for the effort of translating this for me! So the problem
is that we don't explicitly expose shutdown in Ruby's OpenSSL API
and the OP would like to have that facility, did I understand
this correctly?

Note that there is a subtle difference between the API and shutdown(2).
As you may know.

Thanks for pointing this out - indeed, OpenSSL's shutdown behaves
differently than Socket's. But I think we can leave this complexity on
the side of the caller, shall they deal with it appropriately. I need
to investigate whether this would conflict with our internal handling
in sysclose, but if not, I tend to think nothing seems to prevent an
additional shutdown method.

-Martin

[nahi (Hiroshi Nakamura)]

• Assignee changed from MartinBosslet (Martin Bosslet) to nahi (Hiroshi Nakamura)

Oops. Sorry for confusing(?) you. It's me who was asked this question on Twitter. I didn't understand the question so I asked to file an issue, but I keep it opening because I still couldn't understand the point.

Martin, I'll ask OP for detail in Japanese and update you.

[nahi (Hiroshi Nakamura)]

長々ほったらかしてすいませんでした。もう少し教えてください。

送信の終わりを送れません。

ここで言う「送信の終わりを送る」についてもう少し教えてください。

1. ドキュメント等にある（はずの）、通常のRubyのSSLSocketの使い方における送信の終わり方
2. kikさんが想定されている送信の終わり方

を、教えてください。

[MartinBosslet (Martin Bosslet)]

nahi (Hiroshi Nakamura) wrote:

Martin, I'll ask OP for detail in Japanese and update you.

Thanks a lot!

[kik (Masashi Kikuchi)]

http://www.faqs.org/faqs/unix-faq/socket/
http://www.kt.rim.or.jp/~ksk/sock-faq/unix-socket-faq-ja-2.html#ss2.6

2.6 When should I use shutdown()?

のようなソケットプログラミングのイディオムをサーバがTLSで実装しているために、
クライアントを書いてる僕が困っているのです。

1. ドキュメント等にある（はずの）、通常のRubyのSSLSocketの使い方における送信の終わり方
   たぶん、乱暴にcloseして送信と受信が同時に終了する方法しかないはずです

2. kikさんが想定されている送信の終わり方
   FAQに書いてあるような丁寧な閉じ方です。

たぶん単純なTLSのechoサーバでも、丁寧に実装しようとするとクライアントにはshutdownがいると思います。

[mame (Yusuke Endoh)]

• Target version changed from 2.0.0 to 2.6

[zzak (zzak _)]

• Assignee changed from nahi (Hiroshi Nakamura) to 7150

[hsbt (Hiroshi SHIBATA)]

• Assignee set to rhenium (Kazuki Yamaguchi)