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Rendering webpage(supported by html5 and javascript) from server machine to client machine

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  • T Offline
    T Offline
    TioRoy
    wrote on last edited by
    #4

    If I correctly undertand, the problem isn't in the code, but on the page (HTML).

    Can you post the link (img src) to the graph?

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    • M Offline
      M Offline
      mrajanna
      wrote on last edited by
      #5

      Hello Volker,

      Sorry for being impatient. I thought if I send a reminder, someone would respond immmediately. I shall not repeat this :)

      I tried with below Qwebsettings but still no solution. Can I know the specific Qwebsettings that can be used.

      @
      ui->webView->load(QUrl("http://10.102.68.51:8080/Appli"));

      ui->webView->settings()->setAttribute(QWebSettings::DeveloperExtrasEnabled, true);
      ui->webView->settings()->setAttribute(QWebSettings::PluginsEnabled, true);
      

      @

      Hello TioRoy,
      If I try to launch the link in chromium browser, everthing works fine. I predict its not a problem with html.

      Thanks
      Mohan

      [Edit: Added @ tags around code -- mlong]

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      • A Offline
        A Offline
        AcerExtensa
        wrote on last edited by
        #6

        If your graph plotted by the javascript you should enable javascript in webcore.
        @ui->webView->settings()->setAttribute(QWebSettings::JavascriptEnabled, true);@

        P.S.: also, set settings before loading web page...

        God is Real unless explicitly declared as Integer.

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        • M Offline
          M Offline
          mrajanna
          wrote on last edited by
          #7

          Hello AcerExtensa

          I tried below code but still no solution.
          @
          ui->webView->settings()->setAttribute(QWebSettings::JavascriptEnabled, true);
          ui->webView->settings()->setAttribute(QWebSettings::JavascriptCanOpenWindows, true);
          ui->webView->settings()->setAttribute(QWebSettings::JavascriptCanAccessClipboard, true);
          ui->webView->settings()->setAttribute(QWebSettings::JavaEnabled, true);
          ui->webView->settings()->setAttribute(QWebSettings::PluginsEnabled, true);
          ui->webView->settings()->setAttribute(QWebSettings::LocalStorageEnabled, true);

          ui->webView->load(QUrl("http://10.102.68.51:8080/Appli"));
          

          @

          [Edit: Added @ tags around code -- mlong]

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          • A Offline
            A Offline
            AcerExtensa
            wrote on last edited by
            #8

            Does it works with other browsers?

            God is Real unless explicitly declared as Integer.

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            • M Offline
              M Offline
              mlong
              wrote on last edited by
              #9

              mrajanna, please be sure and wrap code snippets with @ tags so that they are formatted correctly. Thanks!

              Software Engineer
              My views and opinions do not necessarily reflect those of anyone -- living or dead, real or fictional -- in this universe or any other similar multiverse node. Void where prohibited. Your mileage may vary. Caveat emptor.

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              • M Offline
                M Offline
                mrajanna
                wrote on last edited by
                #10

                AcerExtensa,

                If I run "http://10.102.68.51:8080/Appli" on chromium browser, it perfectly works. However in Mozilla, it only displays web page and its contents but graph is not getting plotted. I just want to remind you, graph is plotted using javascript.

                Hello mlong,
                Iam sorry, I din't understand you.

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                • T Offline
                  T Offline
                  TioRoy
                  wrote on last edited by
                  #11

                  mrajanna,

                  You need to check for javascript errors.

                  You can implement a class derived from QWebPage, and reimplement the javaScriptConsoleMessage.

                  Check "this":http://www.developer.nokia.com/Community/Wiki/Redirecting_JavaScript_console_messages_in_a_Qt_hybrid_application page.

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                  • M Offline
                    M Offline
                    mlong
                    wrote on last edited by
                    #12

                    bq. Hello mlong,
                    Iam sorry, I din’t understand you.

                    See here for more details:

                    http://qt-project.org/wiki/ForumHelp#e3f82045ad0f480d3fb9e0ac2d58fb01

                    Software Engineer
                    My views and opinions do not necessarily reflect those of anyone -- living or dead, real or fictional -- in this universe or any other similar multiverse node. Void where prohibited. Your mileage may vary. Caveat emptor.

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                    • M Offline
                      M Offline
                      mrajanna
                      wrote on last edited by
                      #13

                      mLong,

                      FYI: web page ( html5 and javascript) is running on server(system near my system) and I am able to render that page on my system using Qtwebkit and display on Qwebview widget of my system. This mean I am able to render the page, but the problem is graph getting plotted in web page of server is not visible on my system.

                      Excuse me if I am wrong, whether should I still follow the link provided by you?

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                      • T Offline
                        T Offline
                        TioRoy
                        wrote on last edited by
                        #14

                        I think you should follow the link.

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                        • M Offline
                          M Offline
                          mlong
                          wrote on last edited by
                          #15

                          mrajanna, as a forum moderator, I was referring to your posts on the forum (formatting your code in your messages, etc.) not responding to your question proper.

                          Software Engineer
                          My views and opinions do not necessarily reflect those of anyone -- living or dead, real or fictional -- in this universe or any other similar multiverse node. Void where prohibited. Your mileage may vary. Caveat emptor.

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                          • M Offline
                            M Offline
                            mrajanna
                            wrote on last edited by
                            #16

                            mlong,
                            I shall take care of your point.

                            I am still not able to fix the problem. Could someone help me.

                            Thanks
                            Mohan

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                            • A Offline
                              A Offline
                              AcerExtensa
                              wrote on last edited by
                              #17

                              bq. I am able to render that page on my system using Qtwebkit and display on Qwebview widget

                              so, if it works correctly, the problem is somewhere else...

                              bq. graph getting plotted in web page of server

                              You have when problem with your server(what ever it is)... What do you mean with "server" at all? some kind of software what do some work and outputs html page? What is it? Is it even Qt software or what?

                              I don't think we can help you without code samples(I mean html page what you got from server)...

                              God is Real unless explicitly declared as Integer.

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                              • M Offline
                                M Offline
                                mrajanna
                                wrote on last edited by
                                #18

                                FYI server side configurations: Tomcat server running html5 page embedded with JSF script on server side. Tomcat uses RFC 6455 websocket protocol.

                                Observation made:
                                I just discovered the problem by using wireshark.

                                a) When request is sent from chromium browser client, it uses  RFC 6455 websocket protocol. Hence it works.
                                
                                b) But Websocket protocol used by Qtwebkit is something other than  RFC 6455. So only connection is getting established with server but data transmission does not happen.
                                

                                Is there is a way to add patch to QtWebkit to support RFC 6455 protocol ?

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                                • T Offline
                                  T Offline
                                  TioRoy
                                  wrote on last edited by
                                  #19

                                  Each browser (like QTWebKit) implements websockets differently. Check "this":http://en.wikipedia.org/wiki/WebSocket and "this":http://en.wikipedia.org/wiki/Comparison_of_WebSocket_implementations.

                                  I guess qtwebkit uses "hybi-07":http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-07 (check this "thread":http://qt-project.org/forums/viewthread/10106). But checking Qt5 sources, I think it uses hybi-10.

                                  Which version of Qt do you use?

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                                  • M Offline
                                    M Offline
                                    mrajanna
                                    wrote on last edited by
                                    #20

                                    TioRoy,

                                    From the Makefile generated for .pro file from qmake command, I see
                                    #Generated by qmake (2.01a) (Qt 4.8.1) on: Fri Oct 12 05:49:57 2012

                                    I download Qt5 from below link:
                                    http://releases.qt-project.org/qt5.0/beta1/qt-linux-opensource-5.0.0-beta1-x86-ubuntu1204-offline.run

                                    After using Qt5, Now I observe graph is getting plotted properly. My problem is solved :)

                                    Thanks for spending your time in answering my questions.

                                    Thanks to Qt5 too.

                                    Regards
                                    Mohan

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