Understanding the Http headers
I am having only the header information.
Please can any one suggest what does it mean.
Authorization: Basic aZMnDb6dcYQ5adRzD9eCcmD=
Content-Length: 313
Host: 197.132.1.55
User-Agent: ApplicationEmulator/1.0
Content-Type: text/xml
<?xml version="1.0" encoding="US-ASCII"?>
<message><sms type="mt"><destination messageid="PS0"><address><number
type="international">12123164564</number></address></destination><source><address>
<number type="unknown"/></address></source><rsr type="success_failure"/><ud
type="text">Hello World</ud></sms></message>
Please Suggest how to send http request using
java class.
Thanks in advance.
Without more context it's difficult to suggest what it means. After some formatting, it might be a SOAP message with some kind of personal info:
<?xml version="1.0" encoding="US-ASCII"?>
<message>
<sms type="mt">
<destination messageid="PS0">
<address>
<number type="international">12123164564</number>
</address>
</destination>
<source>
<address>
<number type="unknown"/>
</address>
</source>
<rsr type="success_failure"/>
<ud type="text">Hello World</ud>
</sms>
</message>
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How to set and retrieve the http headers
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Try using
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HTTP Headers - enabling caching and compression with the portal?
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Here are some links on the subjects of caching and compression that I have compiled:
Caching & Compression info and tools
http://www.webreference.com/internet/software/servers/http/compression/
http://www.ibm.com/developerworks/web/library/wa-httpcomp/
http://www.mnot.net/cache_docs/
http://www.codeproject.com/aspnet/HttpCompressionQnD.asp?df=100&forumid=322472&exp=0&select=1722189#xx1722189xx
http://en.wikipedia.org/wiki/Http_compression
http://perl.apache.org/docs/tutorials/client/compression/compression.html
https://secure.xcache.com/Page.aspx?c=60&p=590
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http://www.howtoforge.com/apache2_mod_deflate
http://www.ircache.net/cgi-bin/cacheability.py
http://betterexplained.com/articles/how-to-optimize-your-site-with-http-caching/
http://betterexplained.com/articles/speed-up-your-javascript-load-time/
http://betterexplained.com/articles/speed-up-your-javascript-load-time/
http://www.rubyrobot.org/article/5-tips-for-faster-loading-web-sites
http://betterexplained.com/articles/how-to-optimize-your-site-with-gzip-compression/
http://www.gidnetwork.com/tools/gzip-test.php
http://www.pipeboost.com/
http://www.schroepl.net/cgi-bin/http_trace.pl
http://leknor.com/code/gziped.php?url=http%3A%2F%2Fwww.google.com
http://www.port80software.com/surveys/top1000compression/
http://www.rexswain.com/httpview.html
http://www.15seconds.com/issue/020314.htm
http://www.devwebpro.com/devwebpro-39-20041117DevelopingYourSiteforPerformanceCompressionandOtherServerSideEnhancements.html
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Edited by tkoenings at 06/18/2007 6:26 AMHi Scott,
Does Weblogic platform 8.1 supports netscape? We have developed a portal which
works perfectly on IE but it dies in netscape. Is netUI tags not supported in
Netscape?
Pls reply
manju
Scott Dunbar <[email protected]> wrote:
From a pure HTML perspective Portal does it's rendering with nested
tables.
Netscape 4.x and below have terrible performance with nested tables.
The
problem is not the Portal server but rather Netscape on the client machine.
If IE and/or a recent version of Netscape/Mozilla is not possible then
there are
really only two options:
1) Faster client hardware - not likely to be an acceptable solution.
2) Minimize the number of portlets and the complexity within the portlets.
Neither of these solutions are a great answer, but the 4.7 series of
Netscape is
getting pretty old. Having said that, we've got customers who want to
continue
to use IE 4 :)
Again, though, this problem is, I'm afraid out of our hands. It is the
client
rendering time that is the issue.
cg wrote:
Does anyone know of any known reasons why the 7.0 (did it also with4.0) portal
pages can take up to almost 30 seconds to load in Netscape 4.7? I knowit is a
very generic question but our customer still uses 4.7 and will notuse the portal
b/c it takes so long to load some of the webapps. What the pages willdo when
loading is that the headers will come up and when it gets to the bodyof the page
it seems to stall and then comes up all of a sudden. For some of thepages it
takes 6 seconds and for others it takes about 24-27 seconds.
We have suggested using IE only but that is not an option with allof the customers
and getting a newer version of Netscape is also out of the question.
Any suggestions would be greatly appreciated.--
scott dunbar
bea systems, inc.
boulder, co, usa -
Generate PDF using Managed Bean with custom HTTP headers
Background
Generate a report in various formats (e.g., PDF, delimited, Excel, HTML, etc.) using JDeveloper 11g Release 2 (11.1.2.3.0) upon clicking an af:commandButton. See also the StackOverflow version of this question:
http://stackoverflow.com/q/13654625/59087
Problem
HTTP headers are being sent twice: once by the framework and once by a bean.
Source Code
The source code includes:
- Button Action
- Managed Bean
- Task Flow
Button Action
The button action:
<af:commandButton text="Report" id="submitReport" action="Execute" />
Managed Bean
The Managed Bean is fairly complex. The code to `responseComplete` is getting called, however it does not seem to be called sufficiently early to prevent the application framework from writing the HTTP headers.
HTTP Response Header Override
* Sets the HTTP headers required to indicate to the browser that the
* report is to be downloaded (rather than displayed in the current
* window).
protected void setDownloadHeaders() {
HttpServletResponse response = getServletResponse();
response.setHeader( "Content-Description", getContentDescription() );
response.setHeader( "Content-Disposition", "attachment, filename="
+ getFilename() );
response.setHeader( "Content-Type", getContentType() );
response.setHeader( "Content-Transfer-Encoding",
getContentTransferEncoding() );
Issue Response Complete
The bean indirectly tells the framework that the response is handled (by the bean):
getFacesContext().responseComplete();
Bean Run and Configure
public void run() {
try {
Report report = getReport();
configure(report.getParameters());
report.run();
} catch (Exception e) {
e.printStackTrace();
private void configure(Parameters p) {
p.put(ReportImpl.SYSTEM_REPORT_PROTOCOL, "http");
p.put(ReportImpl.SYSTEM_REPORT_HOST, "localhost");
p.put(ReportImpl.SYSTEM_REPORT_PORT, "7002");
p.put(ReportImpl.SYSTEM_REPORT_PATH, "/reports/rwservlet");
p.put(Parameters.PARAM_REPORT_FORMAT, "pdf");
p.put("report_cmdkey", getReportName());
p.put("report_ORACLE_1", getReportDestinationType());
p.put("report_ORACLE_2", getReportDestinationFormat());
Task Flow
The Task Flow calls Execute, which refers to the bean's `run()` method:
entry -> main -> Execute -> ReportBeanRun
Where:
<method-call id="ReportBeanRun">
<description>Executes a report</description>
<display-name>Execute Report</display-name>
<method>#{reportBean.run}</method>
<outcome>
<fixed-outcome>success</fixed-outcome>
</outcome>
</method-call>
The bean is assigned to the `request` scope, with a few managed properties:
<control-flow-rule id="__3">
<from-activity-id>main</from-activity-id>
<control-flow-case id="ExecuteReport">
<from-outcome>Execute</from-outcome>
<to-activity-id>ReportBeanRun</to-activity-id>
</control-flow-case>
</control-flow-rule>
<managed-bean id="ReportBean">
<description>Executes a report</description>
<display-name>ReportBean</display-name>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
The `<fixed-outcome>success</fixed-outcome>` strikes me as incorrect -- I don't want the method call to return to another task.
Restrictions
The report server receives requests from the web server exclusively. The report server URL cannot be used by browsers to download directly, for security reasons.
Error Messages
The error message that is generated:
Duplicate headers received from server
Error 349 (net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION): Multiple distinct Content-Disposition headers received. This is disallowed to protect against HTTP response splitting attacks.Nevertheless, the report is being generated. Preventing the framework from writing the HTTP headers would resolve this issue.
Question
How can you set the HTTP headers in ADF while using a Task Flow to generate a PDF by calling a managed bean?
Ideas
Some additional ideas:
- Override the Page Lifecycle Phase Listener (`ADFPhaseListener` + `PageLifecycle`)
- Develop a custom Servlet on the web server
Related Links
- http://www.oracle.com/technetwork/middleware/bi-publisher/adf-bip-ucm-integration-179699.pdf
- http://www.slideshare.net/lucbors/reports-no-notes#btnNext
- http://www.techartifact.com/blogs/2012/03/calling-oracle-report-from-adf-applications.html?goback=%2Egde_4212375_member_102062735
- http://docs.oracle.com/cd/E29049_01/web.1112/e16182/adf_lifecycle.htm#CIABEJFB
Thank you!The problem was that the HTTP headers were in fact being written twice:
1. The report server was returning HTTP response headers.
2. The bean was including its own HTTP response headers (as shown in the question).
3. The bean was copying the entire contents of the report server response, including the headers, into the output stream.
Firefox ignored the duplicate header errors, but Google Chrome did not. -
How do I see http headers in new web inspector resource tab?
In Safari 4.x there was a simple tab to see the http headers, but in the new fancy resource tab I can't find them anywhere. Where did they go?
Perhaps you need to take some tutorials.
LabVIEW Introduction Course - Three Hours
LabVIEW Introduction Course - Six Hours
Attachments:
Example_VI_BD.png 11 KB -
Hi,
How do I set/add the HTTP headers in the webservice soap client(Call object)?
Any pointers/code samples will be of good help.
Regards
KumzaHi,
I have the same problem and I have tried your solution but the problem persists.
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Any idea or suggestion?
Thank you very much in advance.
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import java.net.*;
import java.util.*;
public final class RequestTEST {
public static void main(String args[]) throws Exception
final String CRLF ="\r\n";
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Socket mySocket = new Socket ("127.0.0.1", 5306 );
DataOutputStream out = new DataOutputStream(mySocket.getOutputStream());
InputStream in = mySocket.getInputStream();
System.out.println("Enter a file name to request");
String filename = Console.readString();
String request = "GET /"+filename;
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out.writeUTF( request );
int bytes = 0;
boolean header = true;
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if(bytes==10) //Line Feed LF
bytes = in.read();
if (bytes==13) //Carriage return CR
header=false;
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in = mySocket.getInputStream();
byte[] buffer = new byte[1024];
FileOutputStream oStream = new FileOutputStream(filename);
while((bytes = in.read(buffer)) != -1 )
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oStream.write(buffer, 0, bytes);
oStream.close();
mySocket.close ();
catch (Exception exp ){
exp.printStackTrace();
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Any suggestions or tips on the overall approach to this would be much appreciated.Maybe use the HttpURLConnection and then getHeaderFields().
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.HttpURLConnection;
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if ( args.length != 1 )
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System.exit(-1);
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// The connection object has information that may be
// retrieved without parsing the data returned
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.connect();
// Get an input stream from the URLConnection object
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BufferedReader in = new BufferedReader( isr );
System.out.println( conn.getHeaderField(0) );
int headers = conn.getHeaderFields().size();
for (int i = 1; i < headers; i++)
System.out.println(conn.getHeaderFieldKey(i)
+ " : " + conn.getHeaderField(i));
String line;
while ( (line = in.readLine() ) != null )
System.out.println( line );
in.close();
catch(IOException e)
System.out.println( e );
} -
Get http headers through GenericServlet
hi ,
Is it possible to get the http headers through the GenericServlet. I know i can get it through the HttpServlet. Considering that GenericServlet is parent class of HttpServlet I would think that is possible when I get the InputStream - request.getInputStream I should be able to print the headers too. But that does not seem to be happening ? Any information will be appreciated . thanks -sudhirGreetings,
hi ,
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However, since you're (presumably) running your "generic servlet" in an HTTP-specific container environment, you can always try casting the ServletRequest object to an HttpServletRequest reference and call getHeader on it. ;)
HttpServlet. Considering that GenericServlet is parent class of HttpServlet I would think that is
possibleRefer again to the above.
when I get the InputStream - request.getInputStream I should be able to print the headers too. But
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Tony "Vee Schade" Cook -
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Changing http headers using handlers
Is there anyway to access and set http headers using handlers? I took a look at the documentation and wasn't able to find a way to modify the http headers. Only SOAP related stuff. Need to go more low level.
Access the header by getting the HttpServletRequest object as follows:
handleRequest(MessageContext mc)
Object obj = mc.getProperty("weblogic.webservice.transport.http.request");
if(obj != null && obj instanceof javax.servlet.ServletRequest) {
request = (HttpServletRequest) obj;
request.getHeader("Name of Header");
That'll get you the request header.
I'd imagine you could do the same in a handleResponse method if what your trying to do is set a response header.
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