[antlr-interest] ANTLRWorks debugger

[Vlastimil Adamovsky]

Please, se my article in http://ironglue.wordpress.com

--- On Sat, 2/28/09, Filipe David Manana <fdmanana at ieee.org> wrote:

From: Filipe David Manana <fdmanana at ieee.org>
Subject: [antlr-interest] ANTLRWorks debugger
To: antlr-interest at antlr.org
Date: Saturday, February 28, 2009, 1:46 PM


Hello,

Suddenly, I am no longer able to use the debugger. ANTLRWorks reports that it's not capable of establishing the connection (to my localhost).
I'm using port 49100, and have no other application using this port or blocking firewall rules:


root at core2duo:~# netstat -apn | grep 49100
root at core2duo:~# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
root at core2duo:~# 


tcpdump shows me that somehow the connection is refused through tcp reset packets:


root at core2duo:~# tcpdump -i lo tcp
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on lo, link-type EN10MB (Ethernet), capture size 96 bytes
19:43:36.166844 IP localhost.50571 > localhost.49100: S 3500391462:3500391462(0) win 32792 <mss 16396,sackOK,timestamp 230981 0,nop,wscale 7>
19:43:36.167084 IP localhost.49100 > localhost.50571: R 0:0(0) ack 3500391463 win 0
19:43:36.667645 IP localhost.50572 > localhost.49100: S 3504550876:3504550876(0) win 32792 <mss 16396,sackOK,timestamp 231106 0,nop,wscale 7>
19:43:36.667661 IP localhost.49100 > localhost.50572: R 0:0(0) ack 3504550877 win 0
19:43:37.174907 IP localhost.50573 > localhost.49100: S 3518693368:3518693368(0) win 32792 <mss 16396,sackOK,timestamp 231233 0,nop,wscale 7>
19:43:37.174923 IP localhost.49100 > localhost.50573: R 0:0(0) ack 3518693369 win 0
19:43:37.675554 IP localhost.50574 > localhost.49100: S 3529403760:3529403760(0) win 32792 <mss 16396,sackOK,timestamp 231358 0,nop,wscale 7>
19:43:37.675569 IP localhost.49100 > localhost.50574: R 0:0(0) ack 3529403761 win 0

So there's no local app listening on that port.

I also tried using other ports for the debugger, although the problem persists.

Any suggestion?

It was working fine some hours ago. I've even rebooted my machine...

thank you


-- 
Filipe David Manana,
fdmanana at ieee.org
PGP key - http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xC569452B

"Reasonable men adapt themselves to the world.
Unreasonable men adapt the world to themselves.
That's why all progress depends on unreasonable men."

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