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Postings from May 2003
Posted this to the Win32 mailing list - but no one offered any fix.
I have a simple INET program that opens send and listen sockets on two
machines - then sends short messages between them. (Unix to Windows
NT4)
It worked with MSwin32 ActiveState 5.06 but fails with ActiveState 5.8
(build 806 from ActiveState).
When the Unix box opens a receive socket, the Win32 connects and sends
no problem. BUT...
When the Win32(NT4) box opens a receive socket
(IO::SOCKET::INET=GLOB(0x1c8c73c) - and waits for the Unix box to open
aconnection.
When the Unix box attempts to connect - the Win32 box responds with a
'Reset Connection' - The Win32 box gives the same response if the Unix
box attempts to connect to a non-exsistant port.
I've got a sniffer on the network to see the conversation between the
two systems (posted below).
Any suggestions or comments would really be appreciated.
Thank you.
--
KenMc - conmara@grandcanyonhiker.com
http://www.grandcanyonhiker.com
See our new video -
'Hiking the Grand Canyon - The Corridor Trails'
CODE snip BELOW -----
use IO::Socket;
sub openlisten($portnum) {
my $self = shift;
my $portnum = shift;
my $protocol = getprotobyname('tcp');
my $rcvobj = IO::Socket::INET(
LocalAddr => 'localhost',
LocalPort => $portnum,
Proto => $protocol,
Listen => 5,
Reuse => 1
);
if(!($rcvobj =~ /INET/) { return (undef,$!); }
else { $self->{'rcvobj'} = $rcvobj; }
return ($rcvobj);
}
####
Here is the conversation between Unix and Win32 box - note that it looks
the same if the Unix box
attempts to connect to a non-existant port
#####
Page 1
Protocol Decode Output
----- Decoding frame no: 1 ----
PktID Timestamp Size Source Node Destination Node Protocol
Info.
-------------------------------------------------------------------------------
1 16:09:26.830 0064 unix box win32 DoD TCP
60613->2104
Frame 1 Size 64 Absolute Time Apr 29 16:09:26.830 ASCII MODE
-------------------------------------------------------------------------------
00000: 00 80 5f 25 85 bd 08 00 20 87 90 a9 08 00 45 00 .._%....
.....E.
00016: 00 2c 42 41 40 00 ff 06 cb be 90 96 26 62 90 96
.,BA@.......&b..
00032: 26 3d ec c5 08 38 16 ca df c1 00 00 00 00 60 02
&=...8........`.
00048: 22 38 1c 99 00 00 02 04 05 b4 55 55 ad a4 02 98
"8........UU....
Frame 1 Size 64 Absolute Time Apr 29 16:09:26.830 ASCII MODE
-------------------------------------------------------------------------------
----- Level # 1 is ETHERNET Offset: 0 Size: 14
Dest Address : 00-80-5f-25-85-bd 00 80 5f 25 85 bd
.._%..
Source Address : Sun -87-90-a9 08 00 20 87 90 a9 ..
...
Type : 2048 (DoD IP) 08 00 ..
----- Level # 2 is DoD IP Offset: 14 Size: 20
Version : 4 4 .
Header Length : 20 5 .
Type Of Service: 0 00 .
: 000..... Routine
: ...0.... Normal Delay
: ....0... Normal Throughput
: .....0.. Normal Reliability
Total Length : 44 00 2c .,
Identification : 16961 42 41 BA
Flags : 2 2 .
: 0.. Reserved
: .1. Don't Fragment
: ..0 Last Fragment
Fragment Offset: 0 40 00 @.
Time To Live : 255 ff .
Protocol : 6 (DODTCP) 06 .
Header Checksum: 52158 cb be ..
Source Address : unix box 90 96 26 62
..&b
Dest Address : win32 90 96 26 3d
..&=
----- Level # 3 is DoD TCP Offset: 34 Size: 24
Source Port : 60613 ec c5 ..
Dest Port : 2104 08 38 .8
Seq Number : 382394305 16 ca df c1
....
Ack Number : 0 00 00 00 00
....
Data Offset : 24 6 .
Reserved : 0 0 .
Flags : 2 02 .
: 0..... Invalid Urgent Ptr
: .0.... Invalid Ack Field
: ..0... Push Not Requested
: ...0.. Don't Reset Conn
: ....1. Sync Seq No
: .....0 Not Final Byte Stream
Window : 8760 22 38 "8
Checksum : 7321 1c 99 ..
Urgent Ptr : 0 00 00 ..
Option : 2 [Maximum Segment Size] 02 .
Option Len : 4 04 .
Max Seg size : 05 b4 ..
----- Level # 7 is UserData Offset: 58 Size: 6
00048: 55 55 ad a4 02 98
UU....
##### RESPONSE FROM win32 box #######
PktID Timestamp Size Source Node Destination Node Protocol
Info.
-------------------------------------------------------------------------------
2 16:09:26.831 0064 win32 unix box DoD TCP
2104->60613
Frame 2 Size 64 Absolute Time Apr 29 16:09:26.831 ASCII MODE
-------------------------------------------------------------------------------
00000: 08 00 20 87 90 a9 00 80 5f 25 85 bd 08 00 45 00 ..
....._%....E.
00016: 00 28 65 6a 00 00 80 06 67 9a 90 96 26 3d 90 96
.(ej....g...&=..
00032: 26 62 08 38 ec c5 00 00 00 00 16 ca df c2 50 14
&b.8..........P.
00048: 00 00 56 7a 00 00 20 45 42 45 4a 45 c9 ae 93 5b ..Vz..
EBEJE...[
Frame 2 Size 64 Absolute Time Apr 29 16:09:26.831 ASCII MODE
-------------------------------------------------------------------------------
----- Level # 1 is ETHERNET Offset: 0 Size: 14
Dest Address : Sun -87-90-a9 08 00 20 87 90 a9 ..
...
Source Address : 00-80-5f-25-85-bd 00 80 5f 25 85 bd
.._%..
Type : 2048 (DoD IP) 08 00 ..
----- Level # 2 is DoD IP Offset: 14 Size: 20
Version : 4 4 .
Header Length : 20 5 .
Type Of Service: 0 00 .
: 000..... Routine
: ...0.... Normal Delay
: ....0... Normal Throughput
: .....0.. Normal Reliability
Total Length : 40 00 28 .(
Identification : 25962 65 6a ej
Flags : 0 0 .
: 0.. Reserved
: .0. May Fragment
: ..0 Last Fragment
Fragment Offset: 0 00 00 ..
Time To Live : 128 80 .
Protocol : 6 (DODTCP) 06 .
Header Checksum: 26522 67 9a g.
Source Address : win32 90 96 26 3d
..&=
Dest Address : unix box 90 96 26 62
..&b
----- Level # 3 is DoD TCP Offset: 34 Size: 20
Source Port : 2104 08 38 .8
Dest Port : 60613 ec c5 ..
Seq Number : 0 00 00 00 00
....
Ack Number : 382394306 16 ca df c2
....
Data Offset : 20 5 .
Reserved : 0 0 .
Flags : 20 14 .
: 0..... Invalid Urgent Ptr
: .1.... Valid Ack Field
: ..0... Push Not Requested
: ...1.. Reset Conn
: ....0. Don't Sync Seq No
: .....0 Not Final Byte Stream
Window : 0 00 00 ..
Checksum : 22138 56 7a Vz
Urgent Ptr : 0 00 00 ..
----- Level # 7 is UserData Offset: 54 Size: 10
00048: 20 45 42 45 4a 45 c9 ae 93 5b
EBEJE...[