Re: How AsyncCallback works? - RPC services
Thanks Sri. Sounds like very basic implementation. Each browser implementation could vary, not sure. At least, latest versions should have true async implementations. Thread waiting, I wrote few programs like that. It won't scale. I am sure it won't be that simple. On Feb 26, 11:08 am, Sripathi Krishnan sripathi.krish...@gmail.com wrote: Here's how it works : 1. Javascript code uses XmlHttpRequest API to start an AJAX call. 2. Browser intercepts XmlHttpRequest method invocation 3. Browser makes a http connection to the server in a *separate thread*. This way, the main user interface thread is not blocked. 4. When the http response is available, the browser invokes the AJAX callback as part of the main user interface thread. Key takeaways - - There is no polling or IP based tracking. - The underlying HTTP call is always synchronous. - The browser invokes the callback only when the response is available, which is why we say AJAX is asynchronous --Sri On 26 February 2011 22:59, dreamer venugopal.vasire...@gmail.com wrote: Thanks Jeff.these are programming details. But how AJAX is implemented, like is it polling or true call back, using peer to peer techniques, such details not available. On Feb 26, 9:14 am, Jeff Schwartz jefftschwa...@gmail.com wrote: I googled found the following: Ajax intro:http://www.javalobby.org/articles/ajax/ Google RPC doc: http://code.google.com/webtoolkit/doc/latest/tutorial/RPC.html On Sat, Feb 26, 2011 at 12:01 PM, dreamer venugopal.vasire...@gmail.com wrote: True. Not found this kind of details. May be some gwt contributor should be having good Idea about these. On Feb 25, 6:53 am, Jeff Schwartz jefftschwa...@gmail.com wrote: RPC uses Ajax so understanding how Ajax works will answer all your questions. On Fri, Feb 25, 2011 at 9:49 AM, dreamer venugopal.vasire...@gmail.com wrote: Hi, Not sure how the AsyncCallback works in GWT. Could somebody share please? 1) Will it create a thread and polls the server ? or 2) Will servers register's client IP and when result is available makes a fresh TCP/IP connection to client and calls client. Within this call back, will server calls a method on skeleton (server side stubs) for remote call ? or It just makes a tcp call and client handles calling the Async method ? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- *Jeff Schwartz* http://jefftschwartz.appspot.com/http://www.linkedin.com/in/jefftschw. .. follow me on twitter: @jefftschwartz -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- *Jeff Schwartz* http://jefftschwartz.appspot.com/http://www.linkedin.com/in/jefftschw... follow me on twitter: @jefftschwartz -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: How AsyncCallback works? - RPC services
True. Not found this kind of details. May be some gwt contributor should be having good Idea about these. On Feb 25, 6:53 am, Jeff Schwartz jefftschwa...@gmail.com wrote: RPC uses Ajax so understanding how Ajax works will answer all your questions. On Fri, Feb 25, 2011 at 9:49 AM, dreamer venugopal.vasire...@gmail.comwrote: Hi, Not sure how the AsyncCallback works in GWT. Could somebody share please? 1) Will it create a thread and polls the server ? or 2) Will servers register's client IP and when result is available makes a fresh TCP/IP connection to client and calls client. Within this call back, will server calls a method on skeleton (server side stubs) for remote call ? or It just makes a tcp call and client handles calling the Async method ? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- *Jeff Schwartz*http://jefftschwartz.appspot.com/http://www.linkedin.com/in/jefftschwartz follow me on twitter: @jefftschwartz -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: How AsyncCallback works? - RPC services
I googled found the following: Ajax intro: http://www.javalobby.org/articles/ajax/ Google RPC doc: http://code.google.com/webtoolkit/doc/latest/tutorial/RPC.html On Sat, Feb 26, 2011 at 12:01 PM, dreamer venugopal.vasire...@gmail.comwrote: True. Not found this kind of details. May be some gwt contributor should be having good Idea about these. On Feb 25, 6:53 am, Jeff Schwartz jefftschwa...@gmail.com wrote: RPC uses Ajax so understanding how Ajax works will answer all your questions. On Fri, Feb 25, 2011 at 9:49 AM, dreamer venugopal.vasire...@gmail.com wrote: Hi, Not sure how the AsyncCallback works in GWT. Could somebody share please? 1) Will it create a thread and polls the server ? or 2) Will servers register's client IP and when result is available makes a fresh TCP/IP connection to client and calls client. Within this call back, will server calls a method on skeleton (server side stubs) for remote call ? or It just makes a tcp call and client handles calling the Async method ? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- *Jeff Schwartz* http://jefftschwartz.appspot.com/http://www.linkedin.com/in/jefftschwartz follow me on twitter: @jefftschwartz -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- *Jeff Schwartz* http://jefftschwartz.appspot.com/ http://www.linkedin.com/in/jefftschwartz follow me on twitter: @jefftschwartz -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: How AsyncCallback works? - RPC services
Thanks Jeff.these are programming details. But how AJAX is implemented, like is it polling or true call back, using peer to peer techniques, such details not available. On Feb 26, 9:14 am, Jeff Schwartz jefftschwa...@gmail.com wrote: I googled found the following: Ajax intro:http://www.javalobby.org/articles/ajax/ Google RPC doc:http://code.google.com/webtoolkit/doc/latest/tutorial/RPC.html On Sat, Feb 26, 2011 at 12:01 PM, dreamer venugopal.vasire...@gmail.comwrote: True. Not found this kind of details. May be some gwt contributor should be having good Idea about these. On Feb 25, 6:53 am, Jeff Schwartz jefftschwa...@gmail.com wrote: RPC uses Ajax so understanding how Ajax works will answer all your questions. On Fri, Feb 25, 2011 at 9:49 AM, dreamer venugopal.vasire...@gmail.com wrote: Hi, Not sure how the AsyncCallback works in GWT. Could somebody share please? 1) Will it create a thread and polls the server ? or 2) Will servers register's client IP and when result is available makes a fresh TCP/IP connection to client and calls client. Within this call back, will server calls a method on skeleton (server side stubs) for remote call ? or It just makes a tcp call and client handles calling the Async method ? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- *Jeff Schwartz* http://jefftschwartz.appspot.com/http://www.linkedin.com/in/jefftschw... follow me on twitter: @jefftschwartz -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- *Jeff Schwartz*http://jefftschwartz.appspot.com/http://www.linkedin.com/in/jefftschwartz follow me on twitter: @jefftschwartz -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: How AsyncCallback works? - RPC services
Here's how it works : 1. Javascript code uses XmlHttpRequest API to start an AJAX call. 2. Browser intercepts XmlHttpRequest method invocation 3. Browser makes a http connection to the server in a *separate thread*. This way, the main user interface thread is not blocked. 4. When the http response is available, the browser invokes the AJAX callback as part of the main user interface thread. Key takeaways - - There is no polling or IP based tracking. - The underlying HTTP call is always synchronous. - The browser invokes the callback only when the response is available, which is why we say AJAX is asynchronous --Sri On 26 February 2011 22:59, dreamer venugopal.vasire...@gmail.com wrote: Thanks Jeff.these are programming details. But how AJAX is implemented, like is it polling or true call back, using peer to peer techniques, such details not available. On Feb 26, 9:14 am, Jeff Schwartz jefftschwa...@gmail.com wrote: I googled found the following: Ajax intro:http://www.javalobby.org/articles/ajax/ Google RPC doc: http://code.google.com/webtoolkit/doc/latest/tutorial/RPC.html On Sat, Feb 26, 2011 at 12:01 PM, dreamer venugopal.vasire...@gmail.com wrote: True. Not found this kind of details. May be some gwt contributor should be having good Idea about these. On Feb 25, 6:53 am, Jeff Schwartz jefftschwa...@gmail.com wrote: RPC uses Ajax so understanding how Ajax works will answer all your questions. On Fri, Feb 25, 2011 at 9:49 AM, dreamer venugopal.vasire...@gmail.com wrote: Hi, Not sure how the AsyncCallback works in GWT. Could somebody share please? 1) Will it create a thread and polls the server ? or 2) Will servers register's client IP and when result is available makes a fresh TCP/IP connection to client and calls client. Within this call back, will server calls a method on skeleton (server side stubs) for remote call ? or It just makes a tcp call and client handles calling the Async method ? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- *Jeff Schwartz* http://jefftschwartz.appspot.com/http://www.linkedin.com/in/jefftschw. .. follow me on twitter: @jefftschwartz -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- *Jeff Schwartz* http://jefftschwartz.appspot.com/http://www.linkedin.com/in/jefftschwartz follow me on twitter: @jefftschwartz -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
How AsyncCallback works? - RPC services
Hi, Not sure how the AsyncCallback works in GWT. Could somebody share please? 1) Will it create a thread and polls the server ? or 2) Will servers register's client IP and when result is available makes a fresh TCP/IP connection to client and calls client. Within this call back, will server calls a method on skeleton (server side stubs) for remote call ? or It just makes a tcp call and client handles calling the Async method ? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: How AsyncCallback works? - RPC services
RPC uses Ajax so understanding how Ajax works will answer all your questions. On Fri, Feb 25, 2011 at 9:49 AM, dreamer venugopal.vasire...@gmail.comwrote: Hi, Not sure how the AsyncCallback works in GWT. Could somebody share please? 1) Will it create a thread and polls the server ? or 2) Will servers register's client IP and when result is available makes a fresh TCP/IP connection to client and calls client. Within this call back, will server calls a method on skeleton (server side stubs) for remote call ? or It just makes a tcp call and client handles calling the Async method ? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- *Jeff Schwartz* http://jefftschwartz.appspot.com/ http://www.linkedin.com/in/jefftschwartz follow me on twitter: @jefftschwartz -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
