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From: Karthik Nanjangude <karthik.nanjangude@xius-bcgi.com>
To: Tomcat Users List <users@tomcat.apache.org>
Date: Wed, 11 Aug 2010 13:55:17 +0530
Subject: RE: 2 POST requests to underlying Server
Thread-Topic: 2 POST requests to underlying Server
Thread-Index: Acs5LO6TjJbphPz8Q7GVtnXE5cgEoQAAUHdw
Message-ID: 
 <22571048298BC44DAF91BE12457E873D8E89CBFF@bgxius-ex01.XIUS-bcgi.ltd>
References: 
 <22571048298BC44DAF91BE12457E873D8E89C817@bgxius-ex01.XIUS-bcgi.ltd>
	<4C612C78.6060705@ice-sa.com>
	<22571048298BC44DAF91BE12457E873D8E89C92C@bgxius-ex01.XIUS-bcgi.ltd>
	<4C61354E.4080705@ice-sa.com>
	<22571048298BC44DAF91BE12457E873D8E89C9A9@bgxius-ex01.XIUS-bcgi.ltd>
	<AANLkTik=qKuHwtNiSD7CZ0GRxxNb86s6yzyOEte8aiJY@mail.gmail.com>
	<22571048298BC44DAF91BE12457E873D8E89CA06@bgxius-ex01.XIUS-bcgi.ltd>
	<4C617E73.5030002@christopherschultz.net>
	<AANLkTi=HC1GBaDDHvqYrufm4yryCko=w1bULvC6xgGoo@mail.gmail.com>
	<22571048298BC44DAF91BE12457E873D8E89CADE@bgxius-ex01.XIUS-bcgi.ltd>
 <AANLkTi=Q8j4NkAFvNQ+OPXyrWh7ubLxF+4xbRUKMq1m3@mail.gmail.com>
 <22571048298BC44DAF91BE12457E873D8E89CB0D@bgxius-ex01.XIUS-bcgi.ltd>
 <22571048298BC44DAF91BE12457E873D8E89CB4B@bgxius-ex01.XIUS-bcgi.ltd>
 <4C625B31.8050708@pidster.com>
In-Reply-To: <4C625B31.8050708@pidster.com>
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Hi

>> #1  I'm not sure the JavaScript you posted will work in all browsers.

Absolutely Correct the Application is limited to usage of 2 browsers Via Br=
owser Filter [ IE 7+ ot FF3+ ] Tests carried out from the same.


>>#2  These two requests are around 12 seconds apart.  Perform exactly the =
same test at least 10 more times and report what the period between the pai=
r of requests is.

The sample give was 1 out of 6 times done on the same day


>>#3  I can't see from the trace above what the resource type is, but if it=
's a PDF for example, the browser (+plugin) may be attempting to open
multiple connections with different byte ranges.

This process does not use any Plugin,  it just sends the info to underlying=
 Business Layer and finally on to DataBase.


With regards
karthik


-----Original Message-----
From: Pid [mailto:pid@pidster.com]
Sent: Wednesday, August 11, 2010 1:41 PM
To: Tomcat Users List
Subject: Re: 2 POST requests to underlying Server

On 11/08/2010 07:08, Karthik Nanjangude wrote:
> Hi
>
> Ok I have copied the wire shark test samples for the 2 Post Requests [ Ap=
ache 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=3D2079 Ack=3D4544 Win=3D15600 Len=3D65 TSV=3D22=
65749122 TSER=3D2977204079
>
> Frame 10022 (131 bytes on wire, 131 bytes captured)
>     Arrival Time: Aug  9, 2010 15:30:35.485640000


> Data (65 bytes)
>
> 0000  12 34 00 3d 00 3b 73 69 6d 3d 38 39 36 30 31 39   .4.=3D.;sim=3D896=
019
> 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=3D10527777=
7
> 0030  26 61 63 63 6f 75 6e 74 69 64 3d 36 37 39 37 35   &accountid=3D6797=
5
> 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=3D1075 Ack=3D6 Win=3D5840 Len=3D65 TSV=3D226576=
1224 TSER=3D2977216182
>
> Frame 15548 (131 bytes on wire, 131 bytes captured)
>     Arrival Time: Aug  9, 2010 15:30:47.587974000


> 0000  12 34 00 3d 00 3b 73 69 6d 3d 38 39 36 30 31 39   .4.=3D.;sim=3D896=
019
> 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=3D10527777=
7
> 0030  26 61 63 63 6f 75 6e 74 69 64 3d 36 37 39 37 35   &accountid=3D6797=
5
> 0040  31                                                1
>     Data: 1234003D003B73696D3D3839363031393939303032303432...
>     [Length: 65]


#1  I'm not sure the JavaScript you posted will work in all browsers.

#2  These two requests are around 12 seconds apart.  Perform exactly the
same test at least 10 more times and report what the period between the
pair of requests is.

#3  I can't see from the trace above what the resource type is, but if
it's a PDF for example, the browser (+plugin) may be attempting to open
multiple connections with different byte ranges.


p

> -----Original Message-----
> From: Karthik Nanjangude [mailto:karthik.nanjangude@xius-bcgi.com]
> 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 simult=
aneously.
>
> I can provide u the tcp dump samples which we used to validate using Whit=
e shark.
>
>
> Of course I need some time (probably by EOD ) to get permission from my a=
uthorities for the same.
>
> Is this ok with u
>
>
> With regards
> KArthik
>
> -----Original Message-----
> From: Hassan Schroeder [mailto:hassan.schroeder@gmail.com]
> 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
> <karthik.nanjangude@xius-bcgi.com> 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 Insertio=
n 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 workin=
g .... :(
>
> 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 ------------------------ hassan.schroeder@gmail.com
> twitter: @hassan
>
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