public inbox for gdb@sourceware.org
 help / color / mirror / Atom feed
* gdb refuses to connect to localhost
@ 2020-12-25 22:36 Reinaldo Molina
  2020-12-25 22:55 ` Simon Marchi
                   ` (2 more replies)
  0 siblings, 3 replies; 12+ messages in thread
From: Reinaldo Molina @ 2020-12-25 22:36 UTC (permalink / raw)
  To: gdb

Hey guys!

Looking for some assistants here. I am trying to debug an application using `gdbserver`, but it seems my `lo` network device is messed up. `gdb` refuses to connect to `localhost` every time. Here is my flow:

Terminal 1: `gdbserver localhost:8888 build/luajit`
  - Variants I've tried: `127.0.0.1:8888`

Terminal 2: `gdb build/luajit -ex 'target remote localhost:8888'`

Output from `gdb` on Terminal 2:

    (gdb) target remote :8888
    Remote debugging using :8888
    Ignoring packet error, continuing...
    warning: unrecognized item "timeout" in "qSupported" response
    Ignoring packet error, continuing...
    Remote replied unexpectedly to 'vMustReplyEmpty': timeout

Output from `ip addr show lo`:

    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
        link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
        inet 127.0.0.1/8 scope host lo
          valid_lft forever preferred_lft forever
        inet6 ::1/128 scope host
          valid_lft forever preferred_lft forever

Content from `/etc/hosts`

    # Static table lookup for hostnames.
    # See hosts(5) for details.
    127.0.0.1	localhost
    ::1		localhost
    127.0.1.1	myhostname.localdomain	myhostname

I'm using the command to monitor the ports: `netstat -tulanp`. Here is the output right after running just `gdbserver`:

    (Not all processes could be identified, non-owned process info
    will not be shown, you would have to be root to see it all.)
    tcp        0      0 0.0.0.0:8888            0.0.0.0:*               LISTEN      193337/gdbserver

Output just after telling `gdb` to connect:

    (Not all processes could be identified, non-owned process info
    will not be shown, you would have to be root to see it all.)
    tcp        1      0 0.0.0.0:8888            0.0.0.0:*               LISTEN      193337/gdbserver
    tcp        0      0 127.0.0.1:50720         127.0.0.1:8888          ESTABLISHED 195502/gdb
    tcp      478      0 127.0.0.1:8888          127.0.0.1:50720         ESTABLISHED -

Looks promising but then:

    (Not all processes could be identified, non-owned process info
    will not be shown, you would have to be root to see it all.)
    tcp        1      0 0.0.0.0:8888            0.0.0.0:*               LISTEN      193337/gdbserver
    tcp        0      0 127.0.0.1:50720         127.0.0.1:8888          FIN_WAIT2   -
    tcp      722      0 127.0.0.1:8888          127.0.0.1:50720         CLOSE_WAIT  -

I also don't have any firewalls: `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

gdb version:

    GNU gdb (GDB) 10.1
    Copyright (C) 2020 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.

System info: `uname -all`, it's Arch Linux BTW :D

    Linux helios 5.9.14-arch1-1 #1 SMP PREEMPT Sat, 12 Dec 2020 14:37:12 +0000 x86_64 GNU/Linux

Just baffled by this behavior.

Thanks,
Reinaldo Molina



^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: gdb refuses to connect to localhost
  2020-12-25 22:36 gdb refuses to connect to localhost Reinaldo Molina
@ 2020-12-25 22:55 ` Simon Marchi
  2020-12-25 23:45   ` Reinaldo Molina
  2020-12-25 23:04 ` Andreas Schwab
  2020-12-29 15:48 ` Martin Simmons
  2 siblings, 1 reply; 12+ messages in thread
From: Simon Marchi @ 2020-12-25 22:55 UTC (permalink / raw)
  To: Reinaldo Molina, gdb



On 2020-12-25 5:36 p.m., Reinaldo Molina via Gdb wrote:
> Hey guys!
> 
> Looking for some assistants here. I am trying to debug an application using `gdbserver`, but it seems my `lo` network device is messed up. `gdb` refuses to connect to `localhost` every time. Here is my flow:
> 
> Terminal 1: `gdbserver localhost:8888 build/luajit`
>   - Variants I've tried: `127.0.0.1:8888`
> 
> Terminal 2: `gdb build/luajit -ex 'target remote localhost:8888'`
> 
> Output from `gdb` on Terminal 2:
> 
>     (gdb) target remote :8888
>     Remote debugging using :8888
>     Ignoring packet error, continuing...
>     warning: unrecognized item "timeout" in "qSupported" response
>     Ignoring packet error, continuing...
>     Remote replied unexpectedly to 'vMustReplyEmpty': timeout

That sounds like you are really connecting to something else than gdbserver.

> 
> Output from `ip addr show lo`:
> 
>     1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
>         link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>         inet 127.0.0.1/8 scope host lo
>           valid_lft forever preferred_lft forever
>         inet6 ::1/128 scope host
>           valid_lft forever preferred_lft forever
> 
> Content from `/etc/hosts`
> 
>     # Static table lookup for hostnames.
>     # See hosts(5) for details.
>     127.0.0.1	localhost
>     ::1		localhost
>     127.0.1.1	myhostname.localdomain	myhostname
> 
> I'm using the command to monitor the ports: `netstat -tulanp`. Here is the output right after running just `gdbserver`:
> 
>     (Not all processes could be identified, non-owned process info
>     will not be shown, you would have to be root to see it all.)
>     tcp        0      0 0.0.0.0:8888            0.0.0.0:*               LISTEN      193337/gdbserver
> 
> Output just after telling `gdb` to connect:
> 
>     (Not all processes could be identified, non-owned process info
>     will not be shown, you would have to be root to see it all.)
>     tcp        1      0 0.0.0.0:8888            0.0.0.0:*               LISTEN      193337/gdbserver
>     tcp        0      0 127.0.0.1:50720         127.0.0.1:8888          ESTABLISHED 195502/gdb
>     tcp      478      0 127.0.0.1:8888          127.0.0.1:50720         ESTABLISHED -
> 
> Looks promising but then:
> 
>     (Not all processes could be identified, non-owned process info
>     will not be shown, you would have to be root to see it all.)
>     tcp        1      0 0.0.0.0:8888            0.0.0.0:*               LISTEN      193337/gdbserver
>     tcp        0      0 127.0.0.1:50720         127.0.0.1:8888          FIN_WAIT2   -
>     tcp      722      0 127.0.0.1:8888          127.0.0.1:50720         CLOSE_WAIT  -

I have no clue.  Try "set debug remote 1" in GDB before connecting,
see what data GDB receives.

You can also start GDBserver with --remote-debug to see if there
is some chit chat when GDB connects to it.  If you don't see anything
here, it's probably because GDB ended up connecting to some other
program.

Simon

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: gdb refuses to connect to localhost
  2020-12-25 22:36 gdb refuses to connect to localhost Reinaldo Molina
  2020-12-25 22:55 ` Simon Marchi
@ 2020-12-25 23:04 ` Andreas Schwab
  2020-12-26  0:00   ` Reinaldo Molina
  2020-12-29 15:48 ` Martin Simmons
  2 siblings, 1 reply; 12+ messages in thread
From: Andreas Schwab @ 2020-12-25 23:04 UTC (permalink / raw)
  To: Reinaldo Molina via Gdb; +Cc: Reinaldo Molina

On Dez 25 2020, Reinaldo Molina via Gdb wrote:

> Terminal 2: `gdb build/luajit -ex 'target remote localhost:8888'`
>
> Output from `gdb` on Terminal 2:
>
>     (gdb) target remote :8888

Are you trying to run two instances of gdb simulanously on the same
gdbserver connection?  That won't work.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: gdb refuses to connect to localhost
  2020-12-25 22:55 ` Simon Marchi
@ 2020-12-25 23:45   ` Reinaldo Molina
  2020-12-26  0:00     ` Simon Marchi
  0 siblings, 1 reply; 12+ messages in thread
From: Reinaldo Molina @ 2020-12-25 23:45 UTC (permalink / raw)
  To: Simon Marchi; +Cc: gdb

Thanks for the quick reply. 

Trying your suggestion: 

Terminal 1:

    gdbserver 127.0.01:8889 build/luajit --remote-debug

Terminal 2:

    > gdb build/luajit
    GNU gdb (GDB) 10.1
    Copyright (C) 2020 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.
    Type "show copying" and "show warranty" for details.
    This GDB was configured as "x86_64-pc-linux-gnu".
    Type "show configuration" for configuration details.
    For bug reporting instructions, please see:
    <https://www.gnu.org/software/gdb/bugs/>.
    Find the GDB manual and other documentation resources online at:
        <http://www.gnu.org/software/gdb/documentation/>.

    For help, type "help".
    Type "apropos word" to search for commands related to "word"...
    Reading symbols from build/luajit...
    (gdb) set debug remote 1
    (gdb) target remote localhost:8889
    Remote debugging using localhost:8889
    Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Timed out.
    Timed out.
    Timed out.
    Ignoring packet error, continuing...
    Packet qSupported (supported-packets) is supported
    warning: unrecognized item "timeout" in "qSupported" response
    Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Timed out.
    Timed out.
    Timed out.
    Ignoring packet error, continuing...
    Remote replied unexpectedly to 'vMustReplyEmpty': timeout
    (gdb) target remote 0.0.0.0:8889
    Remote debugging using 0.0.0.0:8889
    Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Timed out.
    Timed out.
    Timed out.
    Ignoring packet error, continuing...
    Packet qSupported (supported-packets) is supported
    warning: unrecognized item "timeout" in "qSupported" response
    Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Timed out.
    Timed out.
    Timed out.
    Ignoring packet error, continuing...
    Remote replied unexpectedly to 'vMustReplyEmpty': timeout
    (gdb) target remote 127.0.0.1:8889
    127.0.0.1:8889: Connection timed out.


Here is `netstat` again:

    (Not all processes could be identified, non-owned process info
    will not be shown, you would have to be root to see it all.)
    tcp        2      0 0.0.0.0:8889            0.0.0.0:*               LISTEN      356666/gdbserver
    tcp      722      0 127.0.0.1:8889          127.0.0.1:35344         CLOSE_WAIT  -
    tcp      722      0 127.0.0.1:8889          127.0.0.1:35402         CLOSE_WAIT  -
    tcp        0      0 127.0.0.1:35402         127.0.0.1:8889          FIN_WAIT2   -


Thanks,
Reinaldo Molina


On 12-25-20 17:55:19, Simon Marchi wrote:
> 
> 
> On 2020-12-25 5:36 p.m., Reinaldo Molina via Gdb wrote:
> > Hey guys!
> > 
> > Looking for some assistants here. I am trying to debug an application using `gdbserver`, but it seems my `lo` network device is messed up. `gdb` refuses to connect to `localhost` every time. Here is my flow:
> > 
> > Terminal 1: `gdbserver localhost:8888 build/luajit`
> >   - Variants I've tried: `127.0.0.1:8888`
> > 
> > Terminal 2: `gdb build/luajit -ex 'target remote localhost:8888'`
> > 
> > Output from `gdb` on Terminal 2:
> > 
> >     (gdb) target remote :8888
> >     Remote debugging using :8888
> >     Ignoring packet error, continuing...
> >     warning: unrecognized item "timeout" in "qSupported" response
> >     Ignoring packet error, continuing...
> >     Remote replied unexpectedly to 'vMustReplyEmpty': timeout
> 
> That sounds like you are really connecting to something else than gdbserver.
> 
> > 
> > Output from `ip addr show lo`:
> > 
> >     1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
> >         link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
> >         inet 127.0.0.1/8 scope host lo
> >           valid_lft forever preferred_lft forever
> >         inet6 ::1/128 scope host
> >           valid_lft forever preferred_lft forever
> > 
> > Content from `/etc/hosts`
> > 
> >     # Static table lookup for hostnames.
> >     # See hosts(5) for details.
> >     127.0.0.1	localhost
> >     ::1		localhost
> >     127.0.1.1	myhostname.localdomain	myhostname
> > 
> > I'm using the command to monitor the ports: `netstat -tulanp`. Here is the output right after running just `gdbserver`:
> > 
> >     (Not all processes could be identified, non-owned process info
> >     will not be shown, you would have to be root to see it all.)
> >     tcp        0      0 0.0.0.0:8888            0.0.0.0:*               LISTEN      193337/gdbserver
> > 
> > Output just after telling `gdb` to connect:
> > 
> >     (Not all processes could be identified, non-owned process info
> >     will not be shown, you would have to be root to see it all.)
> >     tcp        1      0 0.0.0.0:8888            0.0.0.0:*               LISTEN      193337/gdbserver
> >     tcp        0      0 127.0.0.1:50720         127.0.0.1:8888          ESTABLISHED 195502/gdb
> >     tcp      478      0 127.0.0.1:8888          127.0.0.1:50720         ESTABLISHED -
> > 
> > Looks promising but then:
> > 
> >     (Not all processes could be identified, non-owned process info
> >     will not be shown, you would have to be root to see it all.)
> >     tcp        1      0 0.0.0.0:8888            0.0.0.0:*               LISTEN      193337/gdbserver
> >     tcp        0      0 127.0.0.1:50720         127.0.0.1:8888          FIN_WAIT2   -
> >     tcp      722      0 127.0.0.1:8888          127.0.0.1:50720         CLOSE_WAIT  -
> 
> I have no clue.  Try "set debug remote 1" in GDB before connecting,
> see what data GDB receives.
> 
> You can also start GDBserver with --remote-debug to see if there
> is some chit chat when GDB connects to it.  If you don't see anything
> here, it's probably because GDB ended up connecting to some other
> program.
> 
> Simon

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: gdb refuses to connect to localhost
  2020-12-25 23:45   ` Reinaldo Molina
@ 2020-12-26  0:00     ` Simon Marchi
  2020-12-28 15:56       ` Reinaldo Molina
  0 siblings, 1 reply; 12+ messages in thread
From: Simon Marchi @ 2020-12-26  0:00 UTC (permalink / raw)
  To: Reinaldo Molina; +Cc: gdb



On 2020-12-25 6:45 p.m., Reinaldo Molina wrote:
> Thanks for the quick reply. 
> 
> Trying your suggestion: 
> 
> Terminal 1:
> 
>     gdbserver 127.0.01:8889 build/luajit --remote-debug
> 
> Terminal 2:
> 
>     > gdb build/luajit
>     GNU gdb (GDB) 10.1
>     Copyright (C) 2020 Free Software Foundation, Inc.
>     License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
>     This is free software: you are free to change and redistribute it.
>     There is NO WARRANTY, to the extent permitted by law.
>     Type "show copying" and "show warranty" for details.
>     This GDB was configured as "x86_64-pc-linux-gnu".
>     Type "show configuration" for configuration details.
>     For bug reporting instructions, please see:
>     <https://www.gnu.org/software/gdb/bugs/>.
>     Find the GDB manual and other documentation resources online at:
>         <http://www.gnu.org/software/gdb/documentation/>.
> 
>     For help, type "help".
>     Type "apropos word" to search for commands related to "word"...
>     Reading symbols from build/luajit...
>     (gdb) set debug remote 1
>     (gdb) target remote localhost:8889
>     Remote debugging using localhost:8889
>     Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Timed out.
>     Timed out.
>     Timed out.
>     Ignoring packet error, continuing...
>     Packet qSupported (supported-packets) is supported
>     warning: unrecognized item "timeout" in "qSupported" response
>     Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Timed out.
>     Timed out.
>     Timed out.
>     Ignoring packet error, continuing...
>     Remote replied unexpectedly to 'vMustReplyEmpty': timeout
>     (gdb) target remote 0.0.0.0:8889
>     Remote debugging using 0.0.0.0:8889
>     Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Timed out.
>     Timed out.
>     Timed out.
>     Ignoring packet error, continuing...
>     Packet qSupported (supported-packets) is supported
>     warning: unrecognized item "timeout" in "qSupported" response
>     Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Timed out.
>     Timed out.
>     Timed out.
>     Ignoring packet error, continuing...
>     Remote replied unexpectedly to 'vMustReplyEmpty': timeout
>     (gdb) target remote 127.0.0.1:8889
>     127.0.0.1:8889: Connection timed out.

Ok, I don't really know.  I'd probably try to strace gdbserver to see
if it at least accepts the incoming connection, and if so what happens
after that.

Simon

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: gdb refuses to connect to localhost
  2020-12-25 23:04 ` Andreas Schwab
@ 2020-12-26  0:00   ` Reinaldo Molina
  0 siblings, 0 replies; 12+ messages in thread
From: Reinaldo Molina @ 2020-12-26  0:00 UTC (permalink / raw)
  To: Andreas Schwab; +Cc: Reinaldo Molina via Gdb

> Are you trying to run two instances of gdb simulanously on the same
> gdbserver connection?  That won't work.

I only run `gdb` on the second terminal one time.

Thanks for the quick reply,
Reinaldo Molina

On 12-26-20 00:04:12, Andreas Schwab wrote:
> On Dez 25 2020, Reinaldo Molina via Gdb wrote:
> 
> > Terminal 2: `gdb build/luajit -ex 'target remote localhost:8888'`
> >
> > Output from `gdb` on Terminal 2:
> >
> >     (gdb) target remote :8888
> 
> Are you trying to run two instances of gdb simulanously on the same
> gdbserver connection?  That won't work.
> 
> Andreas.
> 
> -- 
> Andreas Schwab, schwab@linux-m68k.org
> GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
> "And now for something completely different."

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: gdb refuses to connect to localhost
  2020-12-26  0:00     ` Simon Marchi
@ 2020-12-28 15:56       ` Reinaldo Molina
  2020-12-28 22:29         ` Simon Marchi
  0 siblings, 1 reply; 12+ messages in thread
From: Reinaldo Molina @ 2020-12-28 15:56 UTC (permalink / raw)
  To: Simon Marchi; +Cc: gdb

[-- Attachment #1: Type: text/plain, Size: 5851 bytes --]

Hello again!

I captured with wireshark the communication. They do seem to communicate 
is just it seems gdbserver is sending this weird stuff that I don't 
know. I guess you guys neither if it does not look familiar:

> >     Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Timed out.

I have attached the raw wireshark capture of the communication. I am not 
too versed in networking so I don't see anything out of line other than 
gdbserver sending the above weird stuff.

I have tried multiple things. Just debugging a simple hello world, I 
checked pacman to see if any of the default installed files have been 
altered and they have not, I removed `.gdbinit`. The `gdb` installation 
is the default one from `pacman`:

  https://archlinux.org/packages/extra/x86_64/gdb/
  
Just really strange behavior. I have a desktop and a laptop and I can 
reproduce the same behavior in both. They are both very similar in linux 
setup, packages, etc.

Just really scratching my head here.

Thanks,
Reinaldo Molina

On 12-25-20 19:00:41, Simon Marchi wrote:
> 
> 
> On 2020-12-25 6:45 p.m., Reinaldo Molina wrote:
> > Thanks for the quick reply. 
> > 
> > Trying your suggestion: 
> > 
> > Terminal 1:
> > 
> >     gdbserver 127.0.01:8889 build/luajit --remote-debug
> > 
> > Terminal 2:
> > 
> >     > gdb build/luajit
> >     GNU gdb (GDB) 10.1
> >     Copyright (C) 2020 Free Software Foundation, Inc.
> >     License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> >     This is free software: you are free to change and redistribute it.
> >     There is NO WARRANTY, to the extent permitted by law.
> >     Type "show copying" and "show warranty" for details.
> >     This GDB was configured as "x86_64-pc-linux-gnu".
> >     Type "show configuration" for configuration details.
> >     For bug reporting instructions, please see:
> >     <https://www.gnu.org/software/gdb/bugs/>.
> >     Find the GDB manual and other documentation resources online at:
> >         <http://www.gnu.org/software/gdb/documentation/>.
> > 
> >     For help, type "help".
> >     Type "apropos word" to search for commands related to "word"...
> >     Reading symbols from build/luajit...
> >     (gdb) set debug remote 1
> >     (gdb) target remote localhost:8889
> >     Remote debugging using localhost:8889
> >     Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Timed out.
> >     Timed out.
> >     Timed out.
> >     Ignoring packet error, continuing...
> >     Packet qSupported (supported-packets) is supported
> >     warning: unrecognized item "timeout" in "qSupported" response
> >     Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Timed out.
> >     Timed out.
> >     Timed out.
> >     Ignoring packet error, continuing...
> >     Remote replied unexpectedly to 'vMustReplyEmpty': timeout
> >     (gdb) target remote 0.0.0.0:8889
> >     Remote debugging using 0.0.0.0:8889
> >     Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Sending packet: $qSupported:multiprocess+;swbreak+;hwbreak+;qRelocInsn+;fork-events+;vfork-events+;exec-events+;vContSupported+;QThreadEvents+;no-resumed+;xmlRegisters=i386#6a...Timed out.
> >     Timed out.
> >     Timed out.
> >     Ignoring packet error, continuing...
> >     Packet qSupported (supported-packets) is supported
> >     warning: unrecognized item "timeout" in "qSupported" response
> >     Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Sending packet: $vMustReplyEmpty#3a...Timed out.
> >     Timed out.
> >     Timed out.
> >     Ignoring packet error, continuing...
> >     Remote replied unexpectedly to 'vMustReplyEmpty': timeout
> >     (gdb) target remote 127.0.0.1:8889
> >     127.0.0.1:8889: Connection timed out.
> 
> Ok, I don't really know.  I'd probably try to strace gdbserver to see
> if it at least accepts the incoming connection, and if so what happens
> after that.
> 
> Simon

[-- Attachment #2: gdb.txt --]
[-- Type: text/plain, Size: 85186 bytes --]

No.     Time           Source                Destination           Protocol Length Info
     73 380.764783525  127.0.0.1             127.0.0.1             TCP      74     34436 → 8888 [SYN] Seq=0 Win=65495 Len=0 MSS=65495 SACK_PERM=1 TSval=3668276571 TSecr=0 WS=128

Frame 73: 74 bytes on wire (592 bits), 74 bytes captured (592 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 60
    Identification: 0xab7d (43901)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x913c [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 0, Len: 0
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 0    (relative sequence number)
    Sequence Number (raw): 4072352413
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 0
    Acknowledgment number (raw): 0
    1010 .... = Header Length: 40 bytes (10)
    Flags: 0x002 (SYN)
    Window: 65495
    [Calculated window size: 65495]
    Checksum: 0xfe30 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (20 bytes), Maximum segment size, SACK permitted, Timestamps, No-Operation (NOP), Window scale
        TCP Option - Maximum segment size: 65495 bytes
        TCP Option - SACK permitted
        TCP Option - Timestamps: TSval 3668276571, TSecr 0
        TCP Option - No-Operation (NOP)
        TCP Option - Window scale: 7 (multiply by 128)
    [Timestamps]
        [Time since first frame in this TCP stream: 0.000000000 seconds]
        [Time since previous frame in this TCP stream: 0.000000000 seconds]

No.     Time           Source                Destination           Protocol Length Info
     74 380.764824975  127.0.0.1             127.0.0.1             TCP      74     8888 → 34436 [SYN, ACK] Seq=0 Ack=1 Win=65483 Len=0 MSS=65495 SACK_PERM=1 TSval=3668276571 TSecr=3668276571 WS=128

Frame 74: 74 bytes on wire (592 bits), 74 bytes captured (592 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 60
    Identification: 0x0000 (0)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x3cba [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 0, Ack: 1, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 0    (relative sequence number)
    Sequence Number (raw): 3967578588
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 4072352414
    1010 .... = Header Length: 40 bytes (10)
    Flags: 0x012 (SYN, ACK)
    Window: 65483
    [Calculated window size: 65483]
    Checksum: 0xfe30 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (20 bytes), Maximum segment size, SACK permitted, Timestamps, No-Operation (NOP), Window scale
        TCP Option - Maximum segment size: 65495 bytes
        TCP Option - SACK permitted
        TCP Option - Timestamps: TSval 3668276571, TSecr 3668276571
        TCP Option - No-Operation (NOP)
        TCP Option - Window scale: 7 (multiply by 128)
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 0.000041450 seconds]
        [Time since previous frame in this TCP stream: 0.000041450 seconds]

No.     Time           Source                Destination           Protocol Length Info
     75 380.764849902  127.0.0.1             127.0.0.1             TCP      66     34436 → 8888 [ACK] Seq=1 Ack=1 Win=65536 Len=0 TSval=3668276571 TSecr=3668276571

Frame 75: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xab7e (43902)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9143 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 1, Ack: 1, Len: 0
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 4072352414
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668276571, TSecr 3668276571
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 0.000066377 seconds]
        [Time since previous frame in this TCP stream: 0.000024927 seconds]

No.     Time           Source                Destination           Protocol Length Info
     76 380.764953824  127.0.0.1             127.0.0.1             TCP      67     34436 → 8888 [PSH, ACK] Seq=1 Ack=1 Win=65536 Len=1 TSval=3668276572 TSecr=3668276571

Frame 76: 67 bytes on wire (536 bits), 67 bytes captured (536 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 53
    Identification: 0xab7f (43903)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9141 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 1, Ack: 1, Len: 1
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 1]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 4072352414
    [Next Sequence Number: 2    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe29 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668276572, TSecr 3668276571
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 0.000170299 seconds]
        [Time since previous frame in this TCP stream: 0.000103922 seconds]
    TCP payload (1 byte)
Data (1 byte)

0000  2b                                                +

No.     Time           Source                Destination           Protocol Length Info
     77 380.764963932  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=2 Win=65536 Len=0 TSval=3668276572 TSecr=3668276572

Frame 77: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe166 (57702)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b5b [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 2, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 2    (relative ack number)
    Acknowledgment number (raw): 4072352415
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668276572, TSecr 3668276572
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 0.000180407 seconds]
        [Time since previous frame in this TCP stream: 0.000010108 seconds]

No.     Time           Source                Destination           Protocol Length Info
     78 380.765005066  127.0.0.1             127.0.0.1             TCP      225    34436 → 8888 [PSH, ACK] Seq=2 Ack=1 Win=65536 Len=159 TSval=3668276572 TSecr=3668276572

Frame 78: 225 bytes on wire (1800 bits), 225 bytes captured (1800 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 211
    Identification: 0xab80 (43904)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x90a2 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 2, Ack: 1, Len: 159
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 159]
    Sequence Number: 2    (relative sequence number)
    Sequence Number (raw): 4072352415
    [Next Sequence Number: 161    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfec7 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668276572, TSecr 3668276572
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 0.000221541 seconds]
        [Time since previous frame in this TCP stream: 0.000041134 seconds]
    TCP payload (159 bytes)
Data (159 bytes)

0000  24 71 53 75 70 70 6f 72 74 65 64 3a 6d 75 6c 74   $qSupported:mult
0010  69 70 72 6f 63 65 73 73 2b 3b 73 77 62 72 65 61   iprocess+;swbrea
0020  6b 2b 3b 68 77 62 72 65 61 6b 2b 3b 71 52 65 6c   k+;hwbreak+;qRel
0030  6f 63 49 6e 73 6e 2b 3b 66 6f 72 6b 2d 65 76 65   ocInsn+;fork-eve
0040  6e 74 73 2b 3b 76 66 6f 72 6b 2d 65 76 65 6e 74   nts+;vfork-event
0050  73 2b 3b 65 78 65 63 2d 65 76 65 6e 74 73 2b 3b   s+;exec-events+;
0060  76 43 6f 6e 74 53 75 70 70 6f 72 74 65 64 2b 3b   vContSupported+;
0070  51 54 68 72 65 61 64 45 76 65 6e 74 73 2b 3b 6e   QThreadEvents+;n
0080  6f 2d 72 65 73 75 6d 65 64 2b 3b 78 6d 6c 52 65   o-resumed+;xmlRe
0090  67 69 73 74 65 72 73 3d 69 33 38 36 23 36 61      gisters=i386#6a

No.     Time           Source                Destination           Protocol Length Info
     79 380.765017675  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=161 Win=65408 Len=0 TSval=3668276572 TSecr=3668276572

Frame 79: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe167 (57703)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b5a [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 161, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 161    (relative ack number)
    Acknowledgment number (raw): 4072352574
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 511
    [Calculated window size: 65408]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668276572, TSecr 3668276572
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 0.000234150 seconds]
        [Time since previous frame in this TCP stream: 0.000012609 seconds]

No.     Time           Source                Destination           Protocol Length Info
     80 382.767692911  127.0.0.1             127.0.0.1             TCP      225    34436 → 8888 [PSH, ACK] Seq=161 Ack=1 Win=65536 Len=159 TSval=3668278574 TSecr=3668276572

Frame 80: 225 bytes on wire (1800 bits), 225 bytes captured (1800 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 211
    Identification: 0xab81 (43905)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x90a1 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 161, Ack: 1, Len: 159
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 159]
    Sequence Number: 161    (relative sequence number)
    Sequence Number (raw): 4072352574
    [Next Sequence Number: 320    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfec7 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668278574, TSecr 3668276572
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 2.002909386 seconds]
        [Time since previous frame in this TCP stream: 2.002675236 seconds]
    TCP payload (159 bytes)
Data (159 bytes)

0000  24 71 53 75 70 70 6f 72 74 65 64 3a 6d 75 6c 74   $qSupported:mult
0010  69 70 72 6f 63 65 73 73 2b 3b 73 77 62 72 65 61   iprocess+;swbrea
0020  6b 2b 3b 68 77 62 72 65 61 6b 2b 3b 71 52 65 6c   k+;hwbreak+;qRel
0030  6f 63 49 6e 73 6e 2b 3b 66 6f 72 6b 2d 65 76 65   ocInsn+;fork-eve
0040  6e 74 73 2b 3b 76 66 6f 72 6b 2d 65 76 65 6e 74   nts+;vfork-event
0050  73 2b 3b 65 78 65 63 2d 65 76 65 6e 74 73 2b 3b   s+;exec-events+;
0060  76 43 6f 6e 74 53 75 70 70 6f 72 74 65 64 2b 3b   vContSupported+;
0070  51 54 68 72 65 61 64 45 76 65 6e 74 73 2b 3b 6e   QThreadEvents+;n
0080  6f 2d 72 65 73 75 6d 65 64 2b 3b 78 6d 6c 52 65   o-resumed+;xmlRe
0090  67 69 73 74 65 72 73 3d 69 33 38 36 23 36 61      gisters=i386#6a

No.     Time           Source                Destination           Protocol Length Info
     81 382.767714640  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=320 Win=65280 Len=0 TSval=3668278574 TSecr=3668278574

Frame 81: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe168 (57704)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b59 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 320, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 320    (relative ack number)
    Acknowledgment number (raw): 4072352733
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 510
    [Calculated window size: 65280]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668278574, TSecr 3668278574
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 2.002931115 seconds]
        [Time since previous frame in this TCP stream: 0.000021729 seconds]

No.     Time           Source                Destination           Protocol Length Info
     82 384.769213691  127.0.0.1             127.0.0.1             TCP      225    34436 → 8888 [PSH, ACK] Seq=320 Ack=1 Win=65536 Len=159 TSval=3668280576 TSecr=3668278574

Frame 82: 225 bytes on wire (1800 bits), 225 bytes captured (1800 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 211
    Identification: 0xab82 (43906)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x90a0 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 320, Ack: 1, Len: 159
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 159]
    Sequence Number: 320    (relative sequence number)
    Sequence Number (raw): 4072352733
    [Next Sequence Number: 479    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfec7 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668280576, TSecr 3668278574
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 4.004430166 seconds]
        [Time since previous frame in this TCP stream: 2.001499051 seconds]
    TCP payload (159 bytes)
Data (159 bytes)

0000  24 71 53 75 70 70 6f 72 74 65 64 3a 6d 75 6c 74   $qSupported:mult
0010  69 70 72 6f 63 65 73 73 2b 3b 73 77 62 72 65 61   iprocess+;swbrea
0020  6b 2b 3b 68 77 62 72 65 61 6b 2b 3b 71 52 65 6c   k+;hwbreak+;qRel
0030  6f 63 49 6e 73 6e 2b 3b 66 6f 72 6b 2d 65 76 65   ocInsn+;fork-eve
0040  6e 74 73 2b 3b 76 66 6f 72 6b 2d 65 76 65 6e 74   nts+;vfork-event
0050  73 2b 3b 65 78 65 63 2d 65 76 65 6e 74 73 2b 3b   s+;exec-events+;
0060  76 43 6f 6e 74 53 75 70 70 6f 72 74 65 64 2b 3b   vContSupported+;
0070  51 54 68 72 65 61 64 45 76 65 6e 74 73 2b 3b 6e   QThreadEvents+;n
0080  6f 2d 72 65 73 75 6d 65 64 2b 3b 78 6d 6c 52 65   o-resumed+;xmlRe
0090  67 69 73 74 65 72 73 3d 69 33 38 36 23 36 61      gisters=i386#6a

No.     Time           Source                Destination           Protocol Length Info
     83 384.769229974  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=479 Win=65152 Len=0 TSval=3668280576 TSecr=3668280576

Frame 83: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe169 (57705)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b58 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 479, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 479    (relative ack number)
    Acknowledgment number (raw): 4072352892
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 509
    [Calculated window size: 65152]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668280576, TSecr 3668280576
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 4.004446449 seconds]
        [Time since previous frame in this TCP stream: 0.000016283 seconds]

No.     Time           Source                Destination           Protocol Length Info
     84 386.771585099  127.0.0.1             127.0.0.1             TCP      225    34436 → 8888 [PSH, ACK] Seq=479 Ack=1 Win=65536 Len=159 TSval=3668282578 TSecr=3668280576

Frame 84: 225 bytes on wire (1800 bits), 225 bytes captured (1800 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 211
    Identification: 0xab83 (43907)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x909f [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 479, Ack: 1, Len: 159
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 159]
    Sequence Number: 479    (relative sequence number)
    Sequence Number (raw): 4072352892
    [Next Sequence Number: 638    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfec7 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668282578, TSecr 3668280576
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 6.006801574 seconds]
        [Time since previous frame in this TCP stream: 2.002355125 seconds]
    TCP payload (159 bytes)
Data (159 bytes)

0000  24 71 53 75 70 70 6f 72 74 65 64 3a 6d 75 6c 74   $qSupported:mult
0010  69 70 72 6f 63 65 73 73 2b 3b 73 77 62 72 65 61   iprocess+;swbrea
0020  6b 2b 3b 68 77 62 72 65 61 6b 2b 3b 71 52 65 6c   k+;hwbreak+;qRel
0030  6f 63 49 6e 73 6e 2b 3b 66 6f 72 6b 2d 65 76 65   ocInsn+;fork-eve
0040  6e 74 73 2b 3b 76 66 6f 72 6b 2d 65 76 65 6e 74   nts+;vfork-event
0050  73 2b 3b 65 78 65 63 2d 65 76 65 6e 74 73 2b 3b   s+;exec-events+;
0060  76 43 6f 6e 74 53 75 70 70 6f 72 74 65 64 2b 3b   vContSupported+;
0070  51 54 68 72 65 61 64 45 76 65 6e 74 73 2b 3b 6e   QThreadEvents+;n
0080  6f 2d 72 65 73 75 6d 65 64 2b 3b 78 6d 6c 52 65   o-resumed+;xmlRe
0090  67 69 73 74 65 72 73 3d 69 33 38 36 23 36 61      gisters=i386#6a

No.     Time           Source                Destination           Protocol Length Info
     85 386.771603383  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=638 Win=65024 Len=0 TSval=3668282578 TSecr=3668282578

Frame 85: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe16a (57706)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b57 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 638, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 638    (relative ack number)
    Acknowledgment number (raw): 4072353051
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668282578, TSecr 3668282578
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 6.006819858 seconds]
        [Time since previous frame in this TCP stream: 0.000018284 seconds]

No.     Time           Source                Destination           Protocol Length Info
     86 390.776278020  127.0.0.1             127.0.0.1             TCP      67     34436 → 8888 [PSH, ACK] Seq=638 Ack=1 Win=65536 Len=1 TSval=3668286583 TSecr=3668282578

Frame 86: 67 bytes on wire (536 bits), 67 bytes captured (536 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 53
    Identification: 0xab84 (43908)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x913c [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 638, Ack: 1, Len: 1
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 1]
    Sequence Number: 638    (relative sequence number)
    Sequence Number (raw): 4072353051
    [Next Sequence Number: 639    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe29 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668286583, TSecr 3668282578
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 10.011494495 seconds]
        [Time since previous frame in this TCP stream: 4.004674637 seconds]
    TCP payload (1 byte)
Data (1 byte)

0000  2d                                                -

No.     Time           Source                Destination           Protocol Length Info
     87 390.776294913  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=639 Win=65024 Len=0 TSval=3668286583 TSecr=3668286583

Frame 87: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe16b (57707)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b56 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 639, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 639    (relative ack number)
    Acknowledgment number (raw): 4072353052
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668286583, TSecr 3668286583
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 10.011511388 seconds]
        [Time since previous frame in this TCP stream: 0.000016893 seconds]

No.     Time           Source                Destination           Protocol Length Info
     88 392.778818422  127.0.0.1             127.0.0.1             TCP      67     34436 → 8888 [PSH, ACK] Seq=639 Ack=1 Win=65536 Len=1 TSval=3668288585 TSecr=3668286583

Frame 88: 67 bytes on wire (536 bits), 67 bytes captured (536 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 53
    Identification: 0xab85 (43909)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x913b [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 639, Ack: 1, Len: 1
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 1]
    Sequence Number: 639    (relative sequence number)
    Sequence Number (raw): 4072353052
    [Next Sequence Number: 640    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe29 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668288585, TSecr 3668286583
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 12.014034897 seconds]
        [Time since previous frame in this TCP stream: 2.002523509 seconds]
    TCP payload (1 byte)
Data (1 byte)

0000  2d                                                -

No.     Time           Source                Destination           Protocol Length Info
     89 392.778837165  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=640 Win=65024 Len=0 TSval=3668288585 TSecr=3668288585

Frame 89: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe16c (57708)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b55 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 640, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 640    (relative ack number)
    Acknowledgment number (raw): 4072353053
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668288585, TSecr 3668288585
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 12.014053640 seconds]
        [Time since previous frame in this TCP stream: 0.000018743 seconds]

No.     Time           Source                Destination           Protocol Length Info
     90 394.781010922  127.0.0.1             127.0.0.1             TCP      67     34436 → 8888 [PSH, ACK] Seq=640 Ack=1 Win=65536 Len=1 TSval=3668290588 TSecr=3668288585

Frame 90: 67 bytes on wire (536 bits), 67 bytes captured (536 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 53
    Identification: 0xab86 (43910)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x913a [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 640, Ack: 1, Len: 1
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 1]
    Sequence Number: 640    (relative sequence number)
    Sequence Number (raw): 4072353053
    [Next Sequence Number: 641    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe29 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668290588, TSecr 3668288585
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 14.016227397 seconds]
        [Time since previous frame in this TCP stream: 2.002173757 seconds]
    TCP payload (1 byte)
Data (1 byte)

0000  2d                                                -

No.     Time           Source                Destination           Protocol Length Info
     91 394.781020477  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=641 Win=65024 Len=0 TSval=3668290588 TSecr=3668290588

Frame 91: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe16d (57709)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b54 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 641, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 641    (relative ack number)
    Acknowledgment number (raw): 4072353054
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668290588, TSecr 3668290588
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 14.016236952 seconds]
        [Time since previous frame in this TCP stream: 0.000009555 seconds]

No.     Time           Source                Destination           Protocol Length Info
     92 394.781050991  127.0.0.1             127.0.0.1             TCP      67     34436 → 8888 [PSH, ACK] Seq=641 Ack=1 Win=65536 Len=1 TSval=3668290588 TSecr=3668290588

Frame 92: 67 bytes on wire (536 bits), 67 bytes captured (536 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 53
    Identification: 0xab87 (43911)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9139 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 641, Ack: 1, Len: 1
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 1]
    Sequence Number: 641    (relative sequence number)
    Sequence Number (raw): 4072353054
    [Next Sequence Number: 642    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe29 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668290588, TSecr 3668290588
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 14.016267466 seconds]
        [Time since previous frame in this TCP stream: 0.000030514 seconds]
    TCP payload (1 byte)
Data (1 byte)

0000  2b                                                +

No.     Time           Source                Destination           Protocol Length Info
     93 394.781053812  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=642 Win=65024 Len=0 TSval=3668290588 TSecr=3668290588

Frame 93: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe16e (57710)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b53 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 642, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 642    (relative ack number)
    Acknowledgment number (raw): 4072353055
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668290588, TSecr 3668290588
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 14.016270287 seconds]
        [Time since previous frame in this TCP stream: 0.000002821 seconds]

No.     Time           Source                Destination           Protocol Length Info
     94 394.781076492  127.0.0.1             127.0.0.1             TCP      85     34436 → 8888 [PSH, ACK] Seq=642 Ack=1 Win=65536 Len=19 TSval=3668290588 TSecr=3668290588

Frame 94: 85 bytes on wire (680 bits), 85 bytes captured (680 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 71
    Identification: 0xab88 (43912)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9126 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 642, Ack: 1, Len: 19
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 19]
    Sequence Number: 642    (relative sequence number)
    Sequence Number (raw): 4072353055
    [Next Sequence Number: 661    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe3b [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668290588, TSecr 3668290588
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 14.016292967 seconds]
        [Time since previous frame in this TCP stream: 0.000022680 seconds]
    TCP payload (19 bytes)
Data (19 bytes)

0000  24 76 4d 75 73 74 52 65 70 6c 79 45 6d 70 74 79   $vMustReplyEmpty
0010  23 33 61                                          #3a

No.     Time           Source                Destination           Protocol Length Info
     95 394.781078858  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=661 Win=65024 Len=0 TSval=3668290588 TSecr=3668290588

Frame 95: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe16f (57711)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b52 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 661, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 661    (relative ack number)
    Acknowledgment number (raw): 4072353074
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668290588, TSecr 3668290588
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 14.016295333 seconds]
        [Time since previous frame in this TCP stream: 0.000002366 seconds]

No.     Time           Source                Destination           Protocol Length Info
     96 396.782938543  127.0.0.1             127.0.0.1             TCP      85     34436 → 8888 [PSH, ACK] Seq=661 Ack=1 Win=65536 Len=19 TSval=3668292590 TSecr=3668290588

Frame 96: 85 bytes on wire (680 bits), 85 bytes captured (680 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 71
    Identification: 0xab89 (43913)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9125 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 661, Ack: 1, Len: 19
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 19]
    Sequence Number: 661    (relative sequence number)
    Sequence Number (raw): 4072353074
    [Next Sequence Number: 680    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe3b [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668292590, TSecr 3668290588
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 16.018155018 seconds]
        [Time since previous frame in this TCP stream: 2.001859685 seconds]
    TCP payload (19 bytes)
Data (19 bytes)

0000  24 76 4d 75 73 74 52 65 70 6c 79 45 6d 70 74 79   $vMustReplyEmpty
0010  23 33 61                                          #3a

No.     Time           Source                Destination           Protocol Length Info
     97 396.782957727  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=680 Win=65024 Len=0 TSval=3668292590 TSecr=3668292590

Frame 97: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe170 (57712)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b51 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 680, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 680    (relative ack number)
    Acknowledgment number (raw): 4072353093
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668292590, TSecr 3668292590
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 16.018174202 seconds]
        [Time since previous frame in this TCP stream: 0.000019184 seconds]

No.     Time           Source                Destination           Protocol Length Info
     98 398.784816173  127.0.0.1             127.0.0.1             TCP      85     34436 → 8888 [PSH, ACK] Seq=680 Ack=1 Win=65536 Len=19 TSval=3668294591 TSecr=3668292590

Frame 98: 85 bytes on wire (680 bits), 85 bytes captured (680 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 71
    Identification: 0xab8a (43914)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9124 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 680, Ack: 1, Len: 19
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 19]
    Sequence Number: 680    (relative sequence number)
    Sequence Number (raw): 4072353093
    [Next Sequence Number: 699    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe3b [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668294591, TSecr 3668292590
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 18.020032648 seconds]
        [Time since previous frame in this TCP stream: 2.001858446 seconds]
    TCP payload (19 bytes)
Data (19 bytes)

0000  24 76 4d 75 73 74 52 65 70 6c 79 45 6d 70 74 79   $vMustReplyEmpty
0010  23 33 61                                          #3a

No.     Time           Source                Destination           Protocol Length Info
     99 398.784841986  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=699 Win=65024 Len=0 TSval=3668294591 TSecr=3668294591

Frame 99: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe171 (57713)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b50 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 699, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 699    (relative ack number)
    Acknowledgment number (raw): 4072353112
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668294591, TSecr 3668294591
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 18.020058461 seconds]
        [Time since previous frame in this TCP stream: 0.000025813 seconds]

No.     Time           Source                Destination           Protocol Length Info
    100 400.787244654  127.0.0.1             127.0.0.1             TCP      85     34436 → 8888 [PSH, ACK] Seq=699 Ack=1 Win=65536 Len=19 TSval=3668296594 TSecr=3668294591

Frame 100: 85 bytes on wire (680 bits), 85 bytes captured (680 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 71
    Identification: 0xab8b (43915)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9123 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 699, Ack: 1, Len: 19
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 19]
    Sequence Number: 699    (relative sequence number)
    Sequence Number (raw): 4072353112
    [Next Sequence Number: 718    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe3b [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668296594, TSecr 3668294591
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 20.022461129 seconds]
        [Time since previous frame in this TCP stream: 2.002402668 seconds]
    TCP payload (19 bytes)
Data (19 bytes)

0000  24 76 4d 75 73 74 52 65 70 6c 79 45 6d 70 74 79   $vMustReplyEmpty
0010  23 33 61                                          #3a

No.     Time           Source                Destination           Protocol Length Info
    101 400.787263368  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=718 Win=65024 Len=0 TSval=3668296594 TSecr=3668296594

Frame 101: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe172 (57714)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b4f [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 718, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 718    (relative ack number)
    Acknowledgment number (raw): 4072353131
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668296594, TSecr 3668296594
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 20.022479843 seconds]
        [Time since previous frame in this TCP stream: 0.000018714 seconds]

No.     Time           Source                Destination           Protocol Length Info
    102 404.791973068  127.0.0.1             127.0.0.1             TCP      67     34436 → 8888 [PSH, ACK] Seq=718 Ack=1 Win=65536 Len=1 TSval=3668300599 TSecr=3668296594

Frame 102: 67 bytes on wire (536 bits), 67 bytes captured (536 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 53
    Identification: 0xab8c (43916)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9134 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 718, Ack: 1, Len: 1
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 1]
    Sequence Number: 718    (relative sequence number)
    Sequence Number (raw): 4072353131
    [Next Sequence Number: 719    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe29 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668300599, TSecr 3668296594
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 24.027189543 seconds]
        [Time since previous frame in this TCP stream: 4.004709700 seconds]
    TCP payload (1 byte)
Data (1 byte)

0000  2d                                                -

No.     Time           Source                Destination           Protocol Length Info
    103 404.791980690  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=719 Win=65024 Len=0 TSval=3668300599 TSecr=3668300599

Frame 103: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe173 (57715)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b4e [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 719, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 719    (relative ack number)
    Acknowledgment number (raw): 4072353132
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668300599, TSecr 3668300599
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 24.027197165 seconds]
        [Time since previous frame in this TCP stream: 0.000007622 seconds]

No.     Time           Source                Destination           Protocol Length Info
    104 406.794341078  127.0.0.1             127.0.0.1             TCP      67     34436 → 8888 [PSH, ACK] Seq=719 Ack=1 Win=65536 Len=1 TSval=3668302601 TSecr=3668300599

Frame 104: 67 bytes on wire (536 bits), 67 bytes captured (536 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 53
    Identification: 0xab8d (43917)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9133 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 719, Ack: 1, Len: 1
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 1]
    Sequence Number: 719    (relative sequence number)
    Sequence Number (raw): 4072353132
    [Next Sequence Number: 720    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe29 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668302601, TSecr 3668300599
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 26.029557553 seconds]
        [Time since previous frame in this TCP stream: 2.002360388 seconds]
    TCP payload (1 byte)
Data (1 byte)

0000  2d                                                -

No.     Time           Source                Destination           Protocol Length Info
    105 406.794358355  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=720 Win=65024 Len=0 TSval=3668302601 TSecr=3668302601

Frame 105: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe174 (57716)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b4d [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 720, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 720    (relative ack number)
    Acknowledgment number (raw): 4072353133
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668302601, TSecr 3668302601
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 26.029574830 seconds]
        [Time since previous frame in this TCP stream: 0.000017277 seconds]

No.     Time           Source                Destination           Protocol Length Info
    106 408.796906512  127.0.0.1             127.0.0.1             TCP      67     34436 → 8888 [PSH, ACK] Seq=720 Ack=1 Win=65536 Len=1 TSval=3668304604 TSecr=3668302601

Frame 106: 67 bytes on wire (536 bits), 67 bytes captured (536 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 53
    Identification: 0xab8e (43918)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9132 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 720, Ack: 1, Len: 1
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 1]
    Sequence Number: 720    (relative sequence number)
    Sequence Number (raw): 4072353133
    [Next Sequence Number: 721    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe29 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668304604, TSecr 3668302601
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 28.032122987 seconds]
        [Time since previous frame in this TCP stream: 2.002548157 seconds]
    TCP payload (1 byte)
Data (1 byte)

0000  2d                                                -

No.     Time           Source                Destination           Protocol Length Info
    107 408.796923382  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=721 Win=65024 Len=0 TSval=3668304604 TSecr=3668304604

Frame 107: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe175 (57717)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b4c [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 721, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 721    (relative ack number)
    Acknowledgment number (raw): 4072353134
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668304604, TSecr 3668304604
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 28.032139857 seconds]
        [Time since previous frame in this TCP stream: 0.000016870 seconds]

No.     Time           Source                Destination           Protocol Length Info
    108 408.796996393  127.0.0.1             127.0.0.1             TCP      67     34436 → 8888 [PSH, ACK] Seq=721 Ack=1 Win=65536 Len=1 TSval=3668304604 TSecr=3668304604

Frame 108: 67 bytes on wire (536 bits), 67 bytes captured (536 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 53
    Identification: 0xab8f (43919)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9131 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 721, Ack: 1, Len: 1
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 1]
    Sequence Number: 721    (relative sequence number)
    Sequence Number (raw): 4072353134
    [Next Sequence Number: 722    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x018 (PSH, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe29 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668304604, TSecr 3668304604
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 28.032212868 seconds]
        [Time since previous frame in this TCP stream: 0.000073011 seconds]
    TCP payload (1 byte)
Data (1 byte)

0000  2b                                                +

No.     Time           Source                Destination           Protocol Length Info
    109 408.797003079  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=722 Win=65024 Len=0 TSval=3668304604 TSecr=3668304604

Frame 109: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe176 (57718)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b4b [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 722, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 722    (relative ack number)
    Acknowledgment number (raw): 4072353135
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668304604, TSecr 3668304604
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 28.032219554 seconds]
        [Time since previous frame in this TCP stream: 0.000006686 seconds]

No.     Time           Source                Destination           Protocol Length Info
    110 408.797097557  127.0.0.1             127.0.0.1             TCP      66     34436 → 8888 [FIN, ACK] Seq=722 Ack=1 Win=65536 Len=0 TSval=3668304604 TSecr=3668304604

Frame 110: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xab90 (43920)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x9131 [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 34436, Dst Port: 8888, Seq: 722, Ack: 1, Len: 0
    Source Port: 34436
    Destination Port: 8888
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 722    (relative sequence number)
    Sequence Number (raw): 4072353135
    [Next Sequence Number: 723    (relative sequence number)]
    Acknowledgment Number: 1    (relative ack number)
    Acknowledgment number (raw): 3967578589
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x011 (FIN, ACK)
    Window: 512
    [Calculated window size: 65536]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668304604, TSecr 3668304604
    [Timestamps]
        [Time since first frame in this TCP stream: 28.032314032 seconds]
        [Time since previous frame in this TCP stream: 0.000094478 seconds]

No.     Time           Source                Destination           Protocol Length Info
    111 408.838243089  127.0.0.1             127.0.0.1             TCP      66     8888 → 34436 [ACK] Seq=1 Ack=723 Win=65024 Len=0 TSval=3668304645 TSecr=3668304604

Frame 111: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface lo, id 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
    Total Length: 52
    Identification: 0xe177 (57719)
    Flags: 0x40, Don't fragment
    Fragment Offset: 0
    Time to Live: 64
    Protocol: TCP (6)
    Header Checksum: 0x5b4a [validation disabled]
    [Header checksum status: Unverified]
    Source Address: 127.0.0.1
    Destination Address: 127.0.0.1
Transmission Control Protocol, Src Port: 8888, Dst Port: 34436, Seq: 1, Ack: 723, Len: 0
    Source Port: 8888
    Destination Port: 34436
    [Stream index: 17]
    [TCP Segment Len: 0]
    Sequence Number: 1    (relative sequence number)
    Sequence Number (raw): 3967578589
    [Next Sequence Number: 1    (relative sequence number)]
    Acknowledgment Number: 723    (relative ack number)
    Acknowledgment number (raw): 4072353136
    1000 .... = Header Length: 32 bytes (8)
    Flags: 0x010 (ACK)
    Window: 508
    [Calculated window size: 65024]
    [Window size scaling factor: 128]
    Checksum: 0xfe28 [unverified]
    [Checksum Status: Unverified]
    Urgent Pointer: 0
    Options: (12 bytes), No-Operation (NOP), No-Operation (NOP), Timestamps
        TCP Option - No-Operation (NOP)
        TCP Option - No-Operation (NOP)
        TCP Option - Timestamps: TSval 3668304645, TSecr 3668304604
    [SEQ/ACK analysis]
    [Timestamps]
        [Time since first frame in this TCP stream: 28.073459564 seconds]
        [Time since previous frame in this TCP stream: 0.041145532 seconds]

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: gdb refuses to connect to localhost
  2020-12-28 15:56       ` Reinaldo Molina
@ 2020-12-28 22:29         ` Simon Marchi
  0 siblings, 0 replies; 12+ messages in thread
From: Simon Marchi @ 2020-12-28 22:29 UTC (permalink / raw)
  To: Reinaldo Molina; +Cc: gdb

On 2020-12-28 10:56 a.m., Reinaldo Molina wrote:
> I have attached the raw wireshark capture of the communication.

Can you attach the pcap instead of a text dump?

In you previous email, the PIDs, seemed to indicate that you are running this
in a container, is that the case?

Simon

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: gdb refuses to connect to localhost
  2020-12-25 22:36 gdb refuses to connect to localhost Reinaldo Molina
  2020-12-25 22:55 ` Simon Marchi
  2020-12-25 23:04 ` Andreas Schwab
@ 2020-12-29 15:48 ` Martin Simmons
  2020-12-29 15:58   ` Reinaldo Molina
  2 siblings, 1 reply; 12+ messages in thread
From: Martin Simmons @ 2020-12-29 15:48 UTC (permalink / raw)
  To: Reinaldo Molina; +Cc: gdb

>>>>> On Fri, 25 Dec 2020 17:36:22 -0500, Reinaldo Molina via Gdb said:
> 
> Hey guys!
> 
> Looking for some assistants here. I am trying to debug an application using `gdbserver`, but it seems my `lo` network device is messed up. `gdb` refuses to connect to `localhost` every time. Here is my flow:
> 
> Terminal 1: `gdbserver localhost:8888 build/luajit`
>   - Variants I've tried: `127.0.0.1:8888`
> 
> Terminal 2: `gdb build/luajit -ex 'target remote localhost:8888'`
> 
> Output from `gdb` on Terminal 2:
> 
>     (gdb) target remote :8888
>     Remote debugging using :8888
>     Ignoring packet error, continuing...
>     warning: unrecognized item "timeout" in "qSupported" response
>     Ignoring packet error, continuing...
>     Remote replied unexpectedly to 'vMustReplyEmpty': timeout

Try running gdbserver with the --no-startup-with-shell argument:

gdbserver --no-startup-with-shell localhost:8888 build/luajit

That seems to be necessary if your shell is tcsh.

__Martin

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: gdb refuses to connect to localhost
  2020-12-29 15:48 ` Martin Simmons
@ 2020-12-29 15:58   ` Reinaldo Molina
  2020-12-29 21:18     ` Simon Marchi
  0 siblings, 1 reply; 12+ messages in thread
From: Reinaldo Molina @ 2020-12-29 15:58 UTC (permalink / raw)
  To: Martin Simmons; +Cc: gdb

> gdbserver --no-startup-with-shell localhost:8888 build/luajit

That did it!!!

My shell is `zsh` by the way.

    > zsh --version
    zsh 5.8 (x86_64-pc-linux-gnu)

Thank you guys! Happy New Year!

Reinaldo Molina

On 12-29-20 15:48:39, Martin Simmons wrote:
> >>>>> On Fri, 25 Dec 2020 17:36:22 -0500, Reinaldo Molina via Gdb said:
> > 
> > Hey guys!
> > 
> > Looking for some assistants here. I am trying to debug an application using `gdbserver`, but it seems my `lo` network device is messed up. `gdb` refuses to connect to `localhost` every time. Here is my flow:
> > 
> > Terminal 1: `gdbserver localhost:8888 build/luajit`
> >   - Variants I've tried: `127.0.0.1:8888`
> > 
> > Terminal 2: `gdb build/luajit -ex 'target remote localhost:8888'`
> > 
> > Output from `gdb` on Terminal 2:
> > 
> >     (gdb) target remote :8888
> >     Remote debugging using :8888
> >     Ignoring packet error, continuing...
> >     warning: unrecognized item "timeout" in "qSupported" response
> >     Ignoring packet error, continuing...
> >     Remote replied unexpectedly to 'vMustReplyEmpty': timeout
> 
> Try running gdbserver with the --no-startup-with-shell argument:
> 
> gdbserver --no-startup-with-shell localhost:8888 build/luajit
> 
> That seems to be necessary if your shell is tcsh.
> 
> __Martin

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: gdb refuses to connect to localhost
  2020-12-29 15:58   ` Reinaldo Molina
@ 2020-12-29 21:18     ` Simon Marchi
  2020-12-30  1:20       ` Reinaldo Molina
  0 siblings, 1 reply; 12+ messages in thread
From: Simon Marchi @ 2020-12-29 21:18 UTC (permalink / raw)
  To: Reinaldo Molina, Martin Simmons; +Cc: gdb



On 2020-12-29 10:58 a.m., Reinaldo Molina via Gdb wrote:
> That did it!!!
> 
> My shell is `zsh` by the way.
> 
>     > zsh --version
>     zsh 5.8 (x86_64-pc-linux-gnu)
> 
> Thank you guys! Happy New Year!
> 
> Reinaldo Molina

Wow, good job at spotting this Martin.

Is it maybe an instance of this bug?

https://sourceware.org/bugzilla/show_bug.cgi?id=26116

Simon

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: gdb refuses to connect to localhost
  2020-12-29 21:18     ` Simon Marchi
@ 2020-12-30  1:20       ` Reinaldo Molina
  0 siblings, 0 replies; 12+ messages in thread
From: Reinaldo Molina @ 2020-12-30  1:20 UTC (permalink / raw)
  To: Simon Marchi; +Cc: Martin Simmons, gdb

> Is it maybe an instance of this bug?
> 
> https://sourceware.org/bugzilla/show_bug.cgi?id=26116

Initially I thought so. I have a fancy prompt. But then I was able to 
reproduce it even in bash. I went for the prompts then, but still could 
reproduce. Then I went for something I should have done a while back, 
but didn't occur to me:

    env -i gdbserver localhost:8888 build/bin/nvim

And it functions properly that way.

So that seems to indicate that is related to my environment variables. I 
have only a few in my `bashrc` and I can still reproduce, so tomorrow 
I'll debug it. See what I can find.

Thanks,
Reinaldo Molina

On 12-29-20 16:18:21, Simon Marchi wrote:
> 
> 
> On 2020-12-29 10:58 a.m., Reinaldo Molina via Gdb wrote:
> > That did it!!!
> > 
> > My shell is `zsh` by the way.
> > 
> >     > zsh --version
> >     zsh 5.8 (x86_64-pc-linux-gnu)
> > 
> > Thank you guys! Happy New Year!
> > 
> > Reinaldo Molina
> 
> Wow, good job at spotting this Martin.
> 
> Is it maybe an instance of this bug?
> 
> https://sourceware.org/bugzilla/show_bug.cgi?id=26116
> 
> Simon

^ permalink raw reply	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2020-12-30  1:20 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-12-25 22:36 gdb refuses to connect to localhost Reinaldo Molina
2020-12-25 22:55 ` Simon Marchi
2020-12-25 23:45   ` Reinaldo Molina
2020-12-26  0:00     ` Simon Marchi
2020-12-28 15:56       ` Reinaldo Molina
2020-12-28 22:29         ` Simon Marchi
2020-12-25 23:04 ` Andreas Schwab
2020-12-26  0:00   ` Reinaldo Molina
2020-12-29 15:48 ` Martin Simmons
2020-12-29 15:58   ` Reinaldo Molina
2020-12-29 21:18     ` Simon Marchi
2020-12-30  1:20       ` Reinaldo Molina

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).