Hi
Ok I have copied the wire shark test samples for the 2 Post Requests [ Apache
to JBOSS (Tomcat Internal )..This was taken Aug 9, 2010
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1nd Post Request
No. Time Source Destination Protocol Info
10022 30.516874 10.151.41.160 10.151.41.163 TCP 33403
> 8109 [PSH, ACK] Seq=2079 Ack=4544 Win=15600 Len=65 TSV=2265749122
TSER=2977204079
Frame 10022 (131 bytes on wire, 131 bytes captured)
Arrival Time: Aug 9, 2010 15:30:35.485640000
[Time delta from previous captured frame: 0.000024000 seconds]
[Time delta from previous displayed frame: 30.516874000 seconds]
[Time since reference or first frame: 30.516874000 seconds]
Frame Number: 10022
Frame Length: 131 bytes
Capture Length: 131 bytes
[Frame is marked: True]
[Protocols in frame: eth:ip:tcp:data]
[Coloring Rule Name: TCP]
[Coloring Rule String: tcp]
Ethernet II, Src: HewlettP_f8:fc:ea (00:24:81:f8:fc:ea), Dst: HewlettP_f8:7d:9c
(00:24:81:f8:7d:9c)
Destination: HewlettP_f8:7d:9c (00:24:81:f8:7d:9c)
Address: HewlettP_f8:7d:9c (00:24:81:f8:7d:9c)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address
(factory default)
Source: HewlettP_f8:fc:ea (00:24:81:f8:fc:ea)
Address: HewlettP_f8:fc:ea (00:24:81:f8:fc:ea)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address
(factory default)
Type: IP (0x0800)
Internet Protocol, Src: 10.151.41.160 (10.151.41.160), Dst: 10.151.41.163
(10.151.41.163)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 117
Identification: 0x0d18 (3352)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 64
Protocol: TCP (0x06)
Header checksum: 0xc4fa [correct]
[Good: True]
[Bad : False]
Source: 10.151.41.160 (10.151.41.160)
Destination: 10.151.41.163 (10.151.41.163)
Transmission Control Protocol, Src Port: 33403 (33403), Dst Port: 8109 (8109),
Seq: 2079, Ack: 4544, Len: 65
Source port: 33403 (33403)
Destination port: 8109 (8109)
[Stream index: 64]
Sequence number: 2079 (relative sequence number)
[Next sequence number: 2144 (relative sequence number)]
Acknowledgement number: 4544 (relative ack number)
Header length: 32 bytes
Flags: 0x18 (PSH, ACK)
0... .... = Congestion Window Reduced (CWR): Not set
.0.. .... = ECN-Echo: Not set
..0. .... = Urgent: Not set
...1 .... = Acknowledgement: Set
.... 1... = Push: Set
.... .0.. = Reset: Not set
.... ..0. = Syn: Not set
.... ...0 = Fin: Not set
Window size: 15600 (scaled)
Checksum: 0x2b50 [validation disabled]
[Good Checksum: False]
[Bad Checksum: False]
Options: (12 bytes)
NOP
NOP
Timestamps: TSval 2265749122, TSecr 2977204079
[SEQ/ACK analysis]
[Number of bytes in flight: 1134]
Data (65 bytes)
0000 12 34 00 3d 00 3b 73 69 6d 3d 38 39 36 30 31 39 .4.=.;sim=896019
0010 39 39 30 30 32 30 34 32 36 33 37 35 26 63 61 6e 990020426375&can
0020 6d 73 69 73 64 6e 3d 31 30 35 32 37 37 37 37 37 msisdn=105277777
0030 26 61 63 63 6f 75 6e 74 69 64 3d 36 37 39 37 35 &accountid=67975
0040 31 1
Data: 1234003D003B73696D3D3839363031393939303032303432...
[Length: 65]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2nd Post Request
No. Time Source Destination Protocol Info
15548 42.619208 10.151.41.160 10.151.41.163 TCP 33418
> 8109 [PSH, ACK] Seq=1075 Ack=6 Win=5840 Len=65 TSV=2265761224 TSER=2977216182
Frame 15548 (131 bytes on wire, 131 bytes captured)
Arrival Time: Aug 9, 2010 15:30:47.587974000
[Time delta from previous captured frame: 0.000009000 seconds]
[Time delta from previous displayed frame: 12.102334000 seconds]
[Time since reference or first frame: 42.619208000 seconds]
Frame Number: 15548
Frame Length: 131 bytes
Capture Length: 131 bytes
[Frame is marked: True]
[Protocols in frame: eth:ip:tcp:data]
[Coloring Rule Name: TCP]
[Coloring Rule String: tcp]
Ethernet II, Src: HewlettP_f8:fc:ea (00:24:81:f8:fc:ea), Dst: HewlettP_f8:7d:9c
(00:24:81:f8:7d:9c)
Destination: HewlettP_f8:7d:9c (00:24:81:f8:7d:9c)
Address: HewlettP_f8:7d:9c (00:24:81:f8:7d:9c)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address
(factory default)
Source: HewlettP_f8:fc:ea (00:24:81:f8:fc:ea)
Address: HewlettP_f8:fc:ea (00:24:81:f8:fc:ea)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address
(factory default)
Type: IP (0x0800)
Internet Protocol, Src: 10.151.41.160 (10.151.41.160), Dst: 10.151.41.163
(10.151.41.163)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 117
Identification: 0x2ad0 (10960)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 64
Protocol: TCP (0x06)
Header checksum: 0xa742 [correct]
[Good: True]
[Bad : False]
Source: 10.151.41.160 (10.151.41.160)
Destination: 10.151.41.163 (10.151.41.163)
Transmission Control Protocol, Src Port: 33418 (33418), Dst Port: 8109 (8109),
Seq: 1075, Ack: 6, Len: 65
Source port: 33418 (33418)
Destination port: 8109 (8109)
[Stream index: 257]
Sequence number: 1075 (relative sequence number)
[Next sequence number: 1140 (relative sequence number)]
Acknowledgement number: 6 (relative ack number)
Header length: 32 bytes
Flags: 0x18 (PSH, ACK)
0... .... = Congestion Window Reduced (CWR): Not set
.0.. .... = ECN-Echo: Not set
..0. .... = Urgent: Not set
...1 .... = Acknowledgement: Set
.... 1... = Push: Set
.... .0.. = Reset: Not set
.... ..0. = Syn: Not set
.... ...0 = Fin: Not set
Window size: 5840 (scaled)
Checksum: 0xbd20 [validation disabled]
[Good Checksum: False]
[Bad Checksum: False]
Options: (12 bytes)
NOP
NOP
Timestamps: TSval 2265761224, TSecr 2977216182
[SEQ/ACK analysis]
[Number of bytes in flight: 1134]
Data (65 bytes)
0000 12 34 00 3d 00 3b 73 69 6d 3d 38 39 36 30 31 39 .4.=.;sim=896019
0010 39 39 30 30 32 30 34 32 36 33 37 35 26 63 61 6e 990020426375&can
0020 6d 73 69 73 64 6e 3d 31 30 35 32 37 37 37 37 37 msisdn=105277777
0030 26 61 63 63 6f 75 6e 74 69 64 3d 36 37 39 37 35 &accountid=67975
0040 31 1
Data: 1234003D003B73696D3D3839363031393939303032303432...
[Length: 65]
With regards
Karthik
-----Original Message-----
From: Karthik Nanjangude [mailto:[email protected]]
Sent: Wednesday, August 11, 2010 11:03 AM
To: Tomcat Users List
Subject: RE: 2 POST requests to underlying Server
Hi
>>wireshark or tcpdump running on the external + internal segments
>>simultaneously.
I can provide u the tcp dump samples which we used to validate using White
shark.
Of course I need some time (probably by EOD ) to get permission from my
authorities for the same.
Is this ok with u
With regards
KArthik
-----Original Message-----
From: Hassan Schroeder [mailto:[email protected]]
Sent: Wednesday, August 11, 2010 10:49 AM
To: Tomcat Users List
Subject: Re: 2 POST requests to underlying Server
On Tue, Aug 10, 2010 at 10:07 PM, Karthik Nanjangude
<[email protected]> wrote:
> The same test performed on the Internal IP (http://<ip:port>/ABCD), and was
> observed that the single Post request was observed with single Insertion to
> DB ... compared to 2 POST request via External IO ( http://ABCD.com )
>
> So how does this prove that the JavaScript as stated below is not working
> .... :(
Forget the browser and the JavaScript -- reproduce the problem using
wget or curl or something basic to initiate your request, with wireshark
or tcpdump running on the external + internal segments simultaneously.
Then you'll have some interesting data :-)
--
Hassan Schroeder ------------------------ [email protected]
twitter: @hassan
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