ruby-dev

In article <20040816190928.524389c9.tommy@tmtm.org>,
  とみたまさひろ <tommy@tmtm.org> writes:

> C でも同じような現象になるので、Ruby じゃなくて stdio の問題のように思
> います。

Ruby のソケットでも、ソケットから取り出した file descriptor を
IO.for_fd で IO オブジェクトにした上で使うと、同様な挙動を示します。

% ruby -rsocket -v -e '
sock1, sock2 = UNIXSocket.pair
sock2 << "aaaaaaazbbbbbbbbbbbb\n"
io = IO.for_fd(sock1.fileno)
p io.gets("z")
io.puts "y"
p io.gets
'
ruby 1.9.0 (2004-08-14) [i686-linux]
"aaaaaaaz"
nil

しかし、IO.for_fd を使わず、ソケットのオブジェクトをそのまま使うと意図
された動作になります。

% ruby -rsocket -v -e '
sock1, sock2 = UNIXSocket.pair
sock2 << "aaaaaaazbbbbbbbbbbbb\n"
io = sock1   
p io.gets("z")
io.puts "y"
p io.gets
'
ruby 1.9.0 (2004-08-14) [i686-linux]
"aaaaaaaz"
"bbbbbbbbbbbb\n"

> /dev/tty のようなデバイスファイルを扱う場合は、stdio は使うなってこと
> かもしれません。

この問題が stdio を使わないことによってしか解決できないとしたら、ソケッ
トは stdio を使っていないのでしょうか?
-- 
[田中 哲][たなか あきら][Tanaka Akira]

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[#24019] [security] security hole was found on PuTTY — "H.Yamamoto" <ocean@...2.ccsnet.ne.jp>

[#24028] --disable-shared --with-static-linked-ext problems — IWATSUKI Hiroyuki <don@...>

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[#24043] [BUG] openssl/x509name — Minero Aoki <aamine@...>

[#24051] k*bsd*-gnu — akira yamada / やまだあきら <akira@...>

[#24052] Uconv標準添付希望 — Kazuhiro NISHIYAMA <zn@...>

[#24055] IO#readpartial again — Tanaka Akira <akr@...17n.org>

[#24060] Zlib::GzipReader#ungetc causes crc error — Tanaka Akira <akr@...17n.org>

[#24061] StringIO#readpartial — Tanaka Akira <akr@...17n.org>

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[#24070] Zlib::GzipReader#readpartial — Tanaka Akira <akr@...17n.org>

[#24072] SSLSocket#wait — GOTOU Yuuzou <gotoyuzo@...>

[#24073] SSLSocket#sysread block a whole process. — Tanaka Akira <akr@...17n.org>

[#24080] net/telnet.rb to use readpartial — Tanaka Akira <akr@...17n.org>

[#24081] to compile tcltklib (bcc32) — "H.Yamamoto" <ocean@...2.ccsnet.ne.jp>

[#24088] duplex I/O for tty — Tanaka Akira <akr@...17n.org>

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[#24100] Re: CVS server — "Akiyoshi, Masamichi" <masamichi.akiyoshi@...>

[#24103] core dump with binding, eval, instance_eval and class variable — Tanaka Akira <akr@...17n.org>

[#24104] String#clear — Satoru Takabayashi <satoru@...>

[#24106] return value of Process.daemon — Tanaka Akira <akr@...17n.org>

[#24112] ruby/tk crashes on bcc32 — "H.Yamamoto" <ocean@...2.ccsnet.ne.jp>

[#24118] tcltk stubs — nobu@...

[#24134] Re: [ruby-cvs] ruby: * dir.c (free_dir): fix memory leak. reported by yamamoto — "U.Nakamura" <usa@...>

[#24137] warning: read buffer data lost — Tanaka Akira <akr@...17n.org>

[#24140] CGI::Session has security problem? — Takahiro Kambe <taca@...>

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[#24154] `str style command execution at safelevel 3 — SASADA Koichi <ko1@...>

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[#24158] CGI::Session::FileStore does not work if $SAFE >= 1 — Shugo Maeda <shugo@...>

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[#24171] gc bug? — Andres Salomon <dilinger@...>

[#24174] 'undefined superclass' message are required? — SASADA Koichi <ko1@...>

[#24183] CGI::Session problem again — Shugo Maeda <shugo@...>

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[#24191] IO#truncate — Tanaka Akira <akr@...17n.org>

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[ruby-dev:24095] Re: duplex I/O for tty

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