Http requests and modules

recently, all the rage for fast websites is about lowering the numbers of http requests. I'm sure you're aware of that.
I was wondering: each module creates in fact an http request, right?
I'm using quite a few modules, especially web contents (for footer, header, navigation…) with the idea of making my site very "modular".
Would that be then a case of wrong tools implementation?

Liam is right. If you were running, say, Wordpress on a shared server then it might matter when you could actually get at the php code and mess around with headers and static caching and such, but I think you're attempting to overoptimize in this case, just using BC makes that mostly not your problem.
IRT = in regards to.
Old versions of IE are notorious for their lack of support for certain css/js features, bugginess (the z-index bug for instance) and needing ugly workarounds and hacks just to get them to support or pretend to support or not die horribly in the presence of modern standards-compliant code.
IE6 in particular is important because it's very buggy AND prevalent in enterprise environments, where for various reasons, upgrading to a new browser is all but impossible (which means if you're building a site meant to be viewed by businesses, IE6 support is expontentially more important than if, say, you're putting up a blog and don't really care.) Although most modern frameworks like Boostrap and Skeleton, and js syntactic libraries like jQuery, are built with this in mind and abstract the issue away by including those hacks themselves, sooner or later you'll run into some kind of code that works brilliantly in every single browser you try... except the old versions of Internet Explorer (and then you end up looking around Stackoverflow for an hour or two looking for the fix.)
Currently various sites and even Microsoft are trying to phase out support for IE6. I personally think if you're using IE6 you should just be willing to deal with broken websites in the same way that if I drive a Ford Model-T onto the highway I should soon expect to have a broken car. But understandably, sites that might lose money not supporting IE6 have to deal with it.

Similar Messages

Difference between module on request and module on input

hi,
what is the Difference between module on request and module on input
can any one explain with some examples
Thanks in advance
Ganesh

HI
module on request is triggered when you press F4
module on input is triggered when you enter any value to certain field or change it.
refer this for more details
http://www.jt77.com/development1/programming-19561.html
reward if helpful
thanks
vivekanand
Message was edited by:
vivekanand meghmala

How to Record HTTP Requests and POST data

Hai all..
Can anyone help me to solve this issue..
How to Record HTTP Requests and POST data by using java..
regards
Ranjith Nair

You should read about TCP and splitting data stream into packets and learn how to understand packet header to assemble stream from packets.
Actually there are few different stages:
1. detect handshake to start new empty stream within your code;
2. detect subsequent packets and assemble stream (there are counters within packet header and they will help).
After creating start of TCP stream (usually 1KB is enough) you'll be able to detect is it HTTP request/header or no and start logging or ignoring packets for this connection.

Doubts about HTTPS requests and Java proxy

Hello,
I need help about SSL connections and Java.
I'm developing a HTTP/S proxy with Java. To test my proxy, I use Firefox. I configure the proxy option in the browser. The proxy works good with HTTP requests, but with HTTPS requests doesn't work and I don't know why.
I explain the steps that I do for a HTTPS request:
* The browser sends a CONNECT message to the proxy.
I check that the proxy receives the CONNECT request correctly.
* The proxy establish a secure connection with the content server.
I use an SSLSocket to connect with my content server, and the SSL handshake is succesful.
* The proxy sends a 200 HTTP response to the client:
I send
HTTP/1.0 200 Connection established[CRLF]
[CRLF]
to the application client (Firefox)
* The proxy sends/receive data to/from Firefox/content server
I have a Socket between Firefox and my proxy, and a SSLSocket between my proxy and my content server. I use two threads to communicate the client and the server.
Java code:
//Thead server-->proxy-->application(Firefox)
ThreadComm tpa = new ThreadComm(bis_serverSSL, bos_app);
//Thread application(Firefox)-->proxy-->server
ThreadComm tap = new ThreadComm(bis_app, bos_serverSSL);
The "tpa" thread reads from the SSLSocket between the proxy and the server and sends data to the Socket between the proxy and Firefox.
The "tap" thread reads from the Socket between the proxy and Firefox and sends data to the SSLSocket between the proxy and the server.
This is the class ThreadComm:
public class ThreadComm extends Thread{
    private BufferedInputStream bis = null;
    private BufferedOutputStream bos = null;
    public ThreadComm(BufferedInputStream bis, BufferedOutputStream bos) {
        this.bis = bis;
        this.bos = bos;
    @Override
    public void run() {
        int b = -1;
        FileOutputStream fos = null;
          do {
               try {
                    b = bis.read();
                    System.out.print((char) b);
                    fos.write(b);
                    bos.write(b);
                    bos.flush();
               } catch (Exception ex) {
                    Logger.getLogger(ThreadAplicacionProxy.class.getName()).log(Level.SEVERE, null, ex);
                    //b=-1;
          } while (b != -1);
    }But this doesn't work and I don't know why.
I have an Apache server with the mod_ssl enabled as content server, I can send requests (with Firefox) to the port 80(HTTP request) and 443(HTTPS request) without use my proxy and it works. If I use my proxy, HTTP request works but with HTTPS request doesn't work, I look the log of Apache and I see:
[Tue Apr 27 17:32:03 2010] [info] Initial (No.1) HTTPS request received for child 62 (server localhost:443)
[Tue Apr 27 17:32:03 2010] [error] [client 127.0.0.1] Invalid method in request \x80\x7f\x01\x03\x01
[Tue Apr 27 17:32:03 2010] [debug] ssl_engine_kernel.c(1770): OpenSSL: Write: SSL negotiation finished successfully
[Tue Apr 27 17:32:03 2010] [info] [client 127.0.0.1] Connection closed to child 62 with standard shutdown (server localhost:443)
Why it say? Invalid method in request \x80\x7f\x01\x03\x01 , my proxy sends the data that the Firefox sends.
I think than I have follow the explanations of [1] but doesn't work, I have problems in implementation in Java but I don't know where.
I appreciate any suggestions.
Thanks for your time.
[1] http://www.web-cache.com/Writings/Internet-Drafts/draft-luotonen-web-proxy-tunneling-01.txt

ejp, I have checked the socket between the proxy and server and ... You are right! , I was using the port 80 instead of the 443 (incredible mistake!, I'm sorry). I was convinced that I was using the port 443... Well, is a little step, but I still have not won the war :)
If I see the log files of Apache, We can see that something goes wrong.
localhost-access.log
>
127.0.0.1 - - [04/May/2010:17:44:48 +0200] "\x 80\x 7f\x01\x03\x01" 501 219
>
localhost-error.log
>
[Tue May 04 17:44:48 2010] [info] Initial (No.1) HTTPS request received for child 63 (server localhost:443)
[Tue May 04 17:44:48 2010] [error] [client 127.0.0.1] Invalid method in request \x80\x7f\x01\x03\x01
[Tue May 04 17:44:48 2010] [debug] ssl_engine_kernel.c(1770): OpenSSL: Write: SSL negotiation finished successfully
[Tue May 04 17:44:48 2010] [info] [client 127.0.0.1] Connection closed to child 63 with standard shutdown (server localhost:443)
>
I think that this happens because Apache receives the data without decrypt, this is the reason because in the log we can see the "Invalid method in request \x80\x7f\x01\x03\x01". This supposition is true?
ejp, you say that the "Termination is quite tricky." I have changed my code following yours suggestions (using the join and the shutdownOutput) but the threads don't die.
I explain you what I do:
(in time 1)
I launch the thread (threadFirefoxToApache) that reads data from Firefox and sends to Apache.
I launch the thread (threadApacheToFirefox) that reads data from Apache and sends to Firefox.
(in time 2)
threadFirefoxToApache sends the firts data to the server.
threadApacheToFirefox is waiting that the server says something.
(in time 3)
threadFirefoxToApache is waiting that Firefox says something.
threadApacheToFirefox sends data to Firefox.
(in time 4)
threadFirefoxToApache is waiting that Firefox says something.
threadApacheToFirefox is waiting that Firefox says something.
and they are waiting... and never finish.
In time 2, these first data are encrypted. The server receives these data and It doesn't understand. In time 3, the server sends a HTTP response "501 Method Not Implemented", here there is a problem because this data must be encrypt. According to the documentation that I read, the proxy cannot "understand" this data but I can "understand" this data. What's happen?
Firefox encrypt the data and send to the proxy. This It's correct.
The proxy encrypt the data another time, because I use the SSLSocket to send the data to the server. Then the server receives the data encrypted two times, when decrypt the data gets the data encrypted one time. And this is the reason why the server doesn't understand the data that sends Firefox. It's correct? May be.
Then If I want that the server receives the data encrypted one time I need to use the socketToServer, It's correct?
I will supposed that yes. If I use the socketToServer, the proxy doesn't understand nothing, because the data received from the socketToServer are encrypted (I only see simbols), but the Apache log says that there is a problem with the version? (If I use the socketToServer the threads die)
>
[Tue May 04 19:55:42 2010] [debug] ssl_engine_kernel.c(1760): OpenSSL: Loop: SSLv3 read finished A
[Tue May 04 19:55:42 2010] [debug] ssl_engine_kernel.c(1760): OpenSSL: Loop: SSLv3 write change cipher spec A
[Tue May 04 19:55:42 2010] [debug] ssl_engine_kernel.c(1760): OpenSSL: Loop: SSLv3 write finished A
[Tue May 04 19:55:42 2010] [debug] ssl_engine_kernel.c(1760): OpenSSL: Loop: SSLv3 flush data
[Tue May 04 19:55:42 2010] [debug] ssl_engine_kernel.c(1756): OpenSSL: Handshake: done
[Tue May 04 19:55:42 2010] [info] Connection: Client IP: 127.0.0.1, Protocol: TLSv1, Cipher: RC4-MD5 (128/128 bits)
[Tue May 04 19:55:42 2010] [debug] ssl_engine_io.c(1817): OpenSSL: read 5/5 bytes from BIO#29bd910 [mem: 29ea0a8] (BIO dump follows)
[Tue May 04 19:55:42 2010] [debug] ssl_engine_io.c(1750): -------------------------------------------------------------------------
[Tue May 04 19:55:42 2010] [debug] ssl_engine_io.c(1789): | 0000: 80 7f 01 03 .... |
[Tue May 04 19:55:42 2010] [debug] ssl_engine_io.c(1793): | 0005 - <SPACES/NULS>
[Tue May 04 19:55:42 2010] [debug] ssl_engine_io.c(1795): ------------------------------------------------------------------------
[Tue May 04 19:55:42 2010] [debug] ssl_engine_kernel.c(1770): OpenSSL: Write: SSL negotiation finished successfully
[Tue May 04 19:55:42 2010] [info] [client 127.0.0.1] SSL library error 1 reading data
[Tue May 04 19:55:42 2010] [info] SSL Library Error: 336130315 error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number
[Tue May 04 19:55:42 2010] [debug] ssl_engine_kernel.c(1770): OpenSSL: Write: SSL negotiation finished successfully
[Tue May 04 19:55:42 2010] [info] [client 127.0.0.1] Connection closed to child 63 with standard shutdown (server localhost:443)
>
What option is the correct? I need use the SSLSocketToServer or socketToServer to send/read the data to/from the server?. Use the SSLSocket has sense because the data travel in a secure socket, but use the Socket also has sense because the data are encrypted and they are protected by this encription. It's complicated...

Setup WLS5.1 to accept only HTTPS requests (and not HTTP requests)...

Greetings,
Does anyone know how to configure Weblogic Server 5.1 so that the web server will
only accept HTTPS requests (on port 7002) and not accept HTTP requests (on port
7001)? I tried commenting out the HTTP ListenPort line in weblogic.properties,
but WL still served up a page via HTTP. Thanks for any help,
Steve

Write a startup class which implements weblogic.security.net.ConnectionFilter
interface
Refer our javadocs at
http://www.weblogic.com/docs51/classdocs/javadocs/index.html
Also
http://www.weblogic.com/docs51/classdocs/API_acl.html#filtering
Kumar
Steve wrote:
Greetings,
Does anyone know how to configure Weblogic Server 5.1 so that the web server will
only accept HTTPS requests (on port 7002) and not accept HTTP requests (on port
7001)? I tried commenting out the HTTP ListenPort line in weblogic.properties,
but WL still served up a page via HTTP. Thanks for any help,
Steve

How to monitor Http Request and Response when load testing is going on

Hi,
can any one please let me know how to monitor http request sent and response received for each virtual ID when a load test is going on ?
Thanks,

You used to be able to see what the VUs "see" using the "VU Monitor" (it would only do a simple rendering of the HTML but it served it's purpose). However this was replaced (in v12 I think?) by the "VU Log". While this offers simlilar functionality, I have had problems getting to see the same level of detail. You may need to use the "debug" modes. Also check the "Content" tab within the VU Logs (it is the closest equivalent to the HTML you would see in the responses in the old VU Monitor).

Using a proxy for http requests and forward

Hi. My company won't allow access to mail.yahoo.com and www.hotmail.com. However, I can get to my own web server on my Cable Modem at home. Can I use the proxy to accept the http connections and forward them to hotmail ...will this work? If not any other solutions?

Yes, that would work if you configure it as a reverse proxy.
IMHO proxy would be overhead for this. There's many freeware out this which is exactly designed for that, see
http://freshmeat.net/search/?q=http+tunnel&section=projects&Go.x=0&Go.y=0

In ActionScript 2.0 , How can I send HTTP request and get the response in JSON format.

I am using ActionScript 2.0 for my app development. I have checked XML and LoadVars class. These classes by default send/receive data either in XML or name/value pair format. I want to send data in JSON format and receive the response in JSON format. How can I achieve this behavior using AS2.0. I have noticed that AS3.0 has the capabilities to do so. My client platform doesn't support AS3.0. Can anybody suggest a way to achieve this?
Thanks in Advance.

Atlast I am able to find the solution for this problem. In the end solutioin is very simple.
Following steps will help in sending request in JSON format.
1. extend LoadVars class
2. override toString method. (It should return JSON format )
3. Use subclass to send the request.

Is there an issue with the latest version of FF with HTTPS requests and Proxy authentication?

I'm currently working inside a cope network behind a proxy, which requires authentication.
When browsing to websites externally to our network I would usually only be promoted once for authentication details; after that I would never see the prompt again until after restating the browser.
However after the latest update I've found that when visiting HTTPS sites I'm promoted for my login details. But even though I enter the correct information the prompt does not take the details and continually asks until eventually our proxy closes the connection (usually with my account now being locked).
My other browsers (IE, GC) work fine without problems.
Any ideas?

It could be a regression in Firefox 18 that wasn't present in Firefox 17. The developers are known nowadays for including too many experimental changes and my bet is one of them is causing this.
But to confirm, could you downgrade back to Firefox 17 and still see if it works well with proxy authentication?
Download link:
<br> www.mozilla.org/en-US/products/download.html?product=firefox-17.0.1&os=win&lang=en-US

Can CSS route based on cookie info in HTTP request

Hi
I am new to CSS and am interested as it might be able to provide a solution to a problem I have seen.
We currently have 3 Windows Servers running an ASP-based web application with a clustered SQL Server backend. The front end uses windows load balancing to distribute the load. All 3 servers are configured the same and there is only one application.
The problem lies with the way an the application maintains session state. I am told it uses a non-persistant cookie on the client which corresponds to a session object on the server. This is opposed to maintaining state in central location such as the database. Obviously this means the client needs to be stuck to a particular server for that session. This is currently achieved by setting the Windows NLB to single affinity which places traffic from a particular IP address to the same server. This does work but the clients source IP is changed by a downstream firewall to a NAT overload address meaning all clients appear with the same IP address (different port) and hence always end up on just one server.
The obvious next step in my mind would be to change the way NAT is done but this is not possible. The next obvious idea would be to change the application so that it maintains state in the database so the affinity of the Windows NLB could be disabled meaning requests would be dealt with using the source IP and port and hence distributed evenly. I am told this cannot be done either :) Joy!
So I have begain to look at other possible solutions. Apologies for my very limited knowledge on the CSS as I am trying to get my head around how it can be configured. I am thinking that it may be able to help me if I used it instead of Windows NLB. I am interested in the way you can use Layer 5 stickiness. Would it be able to examine the cookie in the HTTP request and route the traffic to the correct server?
I am aware that this will not alleviate the failover issue. If one of the servers were to fall over then the client would have to login again, however I am under the impression that this is acceptable behaviour. The main driver here is to provide load balancing to improve application performance by using all resources opposed to just one.
Many many thanks to anyone who can give me advise on this.

Hi Gilles
Thanks for the info. Sounds like we are on the right path. Unfortunately I am unable to get much information from the developers. Long story. I did logon to the system whilst doing a network trace. The following is what I found in the HTTP header:
Hypertext Transfer Protocol
GET /XXXXX/Includes/style.asp HTTP/1.1\r\n
Accept: */*\r\n
Referer:
http://xxx.xxxxx.xxx/xxxxx/login.asp\r\n
Accept-Language: en-gb\r\n
Accept-Encoding: gzip, deflate\r\n
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322)\r\n
Host: xxxx.xxxxx.xxxxx\r\n
Connection: Keep-Alive\r\n
Cookie: ASPSESSIONIDQCBCDSCR=AEHBCJEDDGMMCCBHBICLELGD\r\n
\r\n
Why do you configure 2 services? How would I go about this given the cookie in the HTTP request?
Many thanks
Gary

How to send a document in net.HTTP.request as a POST variable?

I have read and reread the doc on net.HTTP.request, and it says I can pass an argument of oRequest, but I have not succeeded at passing in the current document, which is what I want to do.
I've tried app.activeDocs[0], or encoding that to a string, but though it makes the call without error, nothing is sent.
Should oRequest be simply a document, or a variable made up of name-value pairs? How do we send multiple parameters to a POST otherwise?
I've succeeded fine with calling using GET, but when I tried to pass the document as a GET variable, I got nothing either.
I'm sending to a LiveCycle REST end point so either POST or GET is fine.
Thanks!

POSTing the current document is straightforward *provided* your script is running outside the document context (i.e. in the console or a folder-level script). There's no access from doc-level scripts for obvious reasons.
For example, putting this in the JS console will POST the current file to a URL:
Net.HTTP.request({
cVerb:'POST',
cURL: 'http://localhost/submit.php',
oRequest: Collab.documentToStream(this),
oHandler: {
response: function (msg, uri, err) {
if (err!=undefined) app.alert(msg);
Your problem with talking to a vanilla webservice is that you cannot send the RFC1867 delimeters (i.e. form a "multipart/form-data" request) as the ReadStream object doesn't have a concatenation method in the Acrobat JSAPI. That's also how you would usually prepend other form fields, but if you're careful with your server-side coding you can send those as GET parameters in cURL. Normally you'd be polite and pass a Context-Type header in the aHeaders array - it won't matter to the transmission process but will allow your webservice to predict what the heck it's been sent.
Your webservice will then have to read the raw data. In PHP for example, you won't get anything in the $_FILES global but you can grab the PDF by reading everything from the input buffer, with the line:
$pdf = file_get_contents("php://input");
If that line was in the server script that the above JS code was aimed at, the variable $pdf will contain an exact binary copy of the currently-open document.

How to send a http request to a non java appln

I have one legacy web application running which can handle only http request . So I need to connect (using http request) and send my request and get the response, without opening that application in browser.
Any idea
1) How to connect to non - java appln from a java appln ?
2) How to use the Httprequest without displaying the page using browser?

You can try one of three routes:
Open a socket and write the HTTP request and parse the HTTP response yourself
Use java.net.URLConnection
Use Jakarta Common's HttpClient at jakarta.apache.org- Saish

Example program: Executing an HTTP Request - Connectivity - SAP Library

To add a comment, please log in or register on the top of this page and choose Reply. Please write your comment in English.
You can also go back to the SAP help page.

Hi,
The examples are calling a browser but that is not what we are looking for. What we are looking for is (via ABAP) to send our http request and receive back the anwser. They (http://ec.europa.eu/taxation_customs/vies/) provide the SOAP message (WSDL : (http://ec.europa.eu/taxation_customs/vies/api/checkVatPort?wsdl). My question is if it is possible witout using XI and yes how? If I understand it correctly is should be possible via ABAP (example program RSWF_TEST_HTTP), but if I create my own program I get the message HTTP-Receive: RC=400 ICM_HTTP_CONNECTION_FAILED. Maybe the ABAP code is correct, but maybe I should change some settings or configure something else.
Jan

Persistent HTTP Requests in BSP: Can you Flush the Response without Ending It?

Hello all,
I have been looking for a way to implement a persistent HTTP Request in a BSP. This means the server keeps the request open as long as possible and sends data periodically to the browser without closing the request. In other development environments, there would be a way to flush the response to the client, separate from closing the connection, thus making this possible. I have looked and do not see any way to do this.
Also, if it is not possible with a BSP, is there another way to do this via the Web Application Server?
Thanks for any help,
-Chris

There are various limits: the number of sockets / file descriptors that the operating system lets a program have open, the amount of socket buffer space in the operating system, the number of simultaneous connections that the web server allows. Each of these can be configured.
One problem is that a web server starts a thread for each hit. If you have 1000 simultaneous active hits you have 1000 threads. That is quite a lot. I've seen server OSes start buckling at around 400-500 threads. Given a suitable OS you may get higher with a bit of configuration, but I'd say the number of threads is rather a big concern. 100,000 threads? That dog don't hunt.
An alternative would be not to use a regular web server, but to use a NIO select -based server. Then you can have one thread that handles all the connections. I once did that to write a stock ticker applet. But if you want to do fully standards compliant HTTP implementation that's not trivial.
If you are writing the client applet as well as the server, consider using a simpler protocol than HTTP and writing a NIO server. NIO isn't quite trivial to get really right; look at examples and tutorials; google is your friend. If you can keep each client's connection open do so; establishing and tearing down hundreds or thousands of connections a second, and sending HTTP request and reply headers, is going to eat network and CPU resources.
If you are really targeting 100,000 clients at 5 seconds between messages, that comes to 20,000 messages per second. That's a lot; plan for a load balanced server cluster.

Executing an HTTP Request in ABAP Code

Hi,
I have to write an ABAP program to check VAT numbers before making any VAT declaration. SAP checks the logic of the number, however it does not check if a VAT number is still valid for that company. The European Commission has a website (http://ec.europa.eu/taxation_customs/vies/) where you can check centrally all VAT numbers used in the EU. According to the Commission's web site it should be possible to have an open interface. A SOAP service is available (Its WSDL file can be obtained also on the website).
Does anyone has an idea how this can be done (Current SAP version = SAP ECC 6.0) taken into account there is no XI (or IP) aviable or set up or used.
Thanks,
Jan

Hi,
The examples are calling a browser but that is not what we are looking for. What we are looking for is (via ABAP) to send our http request and receive back the anwser. They (http://ec.europa.eu/taxation_customs/vies/) provide the SOAP message (WSDL : (http://ec.europa.eu/taxation_customs/vies/api/checkVatPort?wsdl). My question is if it is possible witout using XI and yes how? If I understand it correctly is should be possible via ABAP (example program RSWF_TEST_HTTP), but if I create my own program I get the message HTTP-Receive: RC=400 ICM_HTTP_CONNECTION_FAILED. Maybe the ABAP code is correct, but maybe I should change some settings or configure something else.
Jan

Http requests and modules

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