ncat: Listen Plus Exec Equals Keep-Open

[David Millis <tvtronix () yahoo com>]

On Windows XP, I'm getting ncat 5.21 behavior that suggests combining listen with exec implies keep-open.

: ncat -l -p 1234 -e "cmd /c echo hi"
: ncat 127.0.0.1 1234
- hi
- client exits, server doesn't
: ncat 127.0.0.1 1234
- hi
- client exits, server doesn't

The vulnwatch netcat 1.11 Windows port of Hobbit's code did kill its server when the child exited.

I glanced at the source and didn't see an intensional "keepopen = 1" outside of arg handling, so I assume this is a bug.

Maybe somewhere in "ncat_exec_win.c"?


David



      
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