Backport #4506: backport r28557 to 1.9.2

• Status: Closed
• Assignee: -

[normalperson (Eric Wong)]

=begin
Clients can exploit this bug to DoS servers that use IO.copy_stream.
I thought I created a ticket for this back when it was fixed in trunk...
=end

[naruse (Yui NARUSE)]

• Project changed from Ruby master to Backport192
• Category changed from core to core
• Target version deleted (1.9.2)

=begin
It seems r28557.
=end

[yugui (Yuki Sonoda)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r31845.
Eric, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

merges r28557 from trunk into ruby_1_9_2. Fixes #4506.

• io.c (nogvl_copy_stream_sendfile): jump to retry_sendfile directly
  to avoid select() on a socket which TCP state is CLOSED.
  patch by Eric Wong. [ruby-core:31053]