ncat --exec "ncat www.google.com.ar 80" -l 9000 -vvv
Listening on 0.0.0.0:9000
DEBUG: initialized fdlist with 102 maxfds
DEBUG: added fd 3 to list, nfds 1, maxfd 3
DEBUG: added fd 0 to list, nfds 2, maxfd 3
DEBUG: selecting, fdmax 3
DEBUG: select returned 1 fds ready
DEBUG: fd 3 is ready
DEBUG: accept returned 4, errno 0
DEBUG: Executing: ncat www.google.com.ar 80
DEBUG: listen tcp: parent closed 4
DEBUG: listen tcp: accepted new connection
DEBUG: selecting, fdmax 3
DEBUG: select returned 1 fds ready
DEBUG: fd 3 is ready
DEBUG: accept returned 4, errno 10
DEBUG: Executing: ncat www.google.com.ar 80
DEBUG: listen tcp: parent closed 4
DEBUG: listen tcp: accepted new connection
DEBUG: selecting, fdmax 3
DEBUG: select returned 1 fds ready
DEBUG: fd 3 is ready
DEBUG: accept returned 4, errno 10
DEBUG: Executing: ncat www.google.com.ar 80
DEBUG: listen tcp: parent closed 4
DEBUG: listen tcp: accepted new connection
DEBUG: selecting, fdmax 3


--------------------------------------------------------------------


ncat localhost 9000 -vvv
NSOCK (1228298.0460s) msevent_new (IOD #1) (EID #8)
NSOCK (1228298.0460s) TCP connection requested to 127.0.0.1:9000 (IOD #1) EID 8
NSOCK (1228298.0460s) NSE #8: Adding event
NSOCK (1228298.0490s) nsock_loop() started (no timeout). 1 events pending
NSOCK (1228298.0490s) wait_for_events
NSOCK (1228298.0490s) before iterating, list 0
NSOCK (1228298.0490s) before iterating 8
NSOCK (1228298.0490s) before iterating, list 1
NSOCK (1228298.0490s) before iterating, list 2
NSOCK (1228298.0490s) before iterating, list 3
NSOCK (1228298.0490s) before iterating, list 4
NSOCK (1228298.0490s) list 0, iterating 8
NSOCK (1228298.0490s) NSE #8: Removing event from event_lists[0]
NSOCK (1228298.0490s) Callback: CONNECT SUCCESS for EID 8 [127.0.0.1:9000]
Received callback of type CONNECT with status SUCCESS
Connected to 127.0.0.1:9000
NSOCK (1228298.0490s) msevent_new (IOD #1) (EID #18)
NSOCK (1228298.0490s) Read request for 1 lines from IOD #1 [127.0.0.1:9000] EID 18
NSOCK (1228298.0490s) NSE #18: Adding event
NSOCK (1228298.0490s) msevent_new (IOD #2) (EID #26)
NSOCK (1228298.0490s) Read request for 1 lines from IOD #2 (peer unspecified) EID 26
NSOCK (1228298.0490s) NSE #26: Adding event
NSOCK (1228298.0490s) msevent_delete (IOD #1) (EID #8)
NSOCK (1228298.0490s) list 1, iterating 26
NSOCK (1228298.0490s) list 1, iterating 18
NSOCK (1228298.0510s) wait_for_events
NSOCK (1228298.0510s) before iterating, list 0
NSOCK (1228298.0510s) before iterating, list 1
NSOCK (1228298.0510s) before iterating 26
NSOCK (1228298.0510s) before iterating 18
NSOCK (1228298.0510s) before iterating, list 2
NSOCK (1228298.0510s) before iterating, list 3
NSOCK (1228298.0510s) before iterating, list 4
NSOCK (1228298.0510s) list 1, iterating 26
NSOCK (1228298.0510s) list 1, iterating 18
NSOCK (1228298.0510s) NSE #18: Removing event from event_lists[1]
NSOCK (1228298.0510s) Callback: READ SUCCESS for EID 18 [127.0.0.1:9000] (195 bytes)
Received callback of type READ with status SUCCESS
DEBUG: Executable path: ncat
DEBUG: Command argument: www.google.com.ar
DEBUG: Command argument: 80
DEBUG: Executing redirected command ncat www.google.com.ar 80
execv: No such file or directory
NSOCK (1228298.0510s) msevent_new (IOD #1) (EID #34)
NSOCK (1228298.0510s) Read request for 1 lines from IOD #1 [127.0.0.1:9000] EID 34
NSOCK (1228298.0510s) NSE #34: Adding event
NSOCK (1228298.0510s) msevent_delete (IOD #1) (EID #18)
NSOCK (1228298.0530s) wait_for_events
NSOCK (1228298.0540s) before iterating, list 0
NSOCK (1228298.0540s) before iterating, list 1
NSOCK (1228298.0540s) before iterating 34
NSOCK (1228298.0540s) before iterating 26
NSOCK (1228298.0540s) before iterating, list 2
NSOCK (1228298.0540s) before iterating, list 3
NSOCK (1228298.0540s) before iterating, list 4
NSOCK (1228298.0540s) list 1, iterating 34
NSOCK (1228298.0540s) NSE #34: Removing event from event_lists[1]
NSOCK (1228298.0540s) Callback: READ EOF for EID 34 [127.0.0.1:9000]
Received callback of type READ with status EOF
NSOCK (1228298.0540s) msevent_delete (IOD #1) (EID #34)
NSOCK (1228298.0540s) list 1, iterating 26
NSOCK (1228298.0550s) wait_for_events