BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Is it legal with Indy?          BorlandTalk.com Forum Index -> Delphi Internet Winsock View previous topic :: View next topic   Author Message Salvatore Besso Guest Posted: Thu Dec 16, 2004 1:08 am    Post subject: Is it legal with Indy? hello all, I was wondering if it is legal, while a POP3 session is in progress, to open, work with and close SMTP sessions. I'm using Delphi 7 Pro and Indy 9.0.18. Basically what I'm doing is more or less: POP3.Connect; GetMessageCount; for MsgNo := 0 to Pred(MessagesCount) do begin RetrieveHeaders(MsgNo); POP3.Retrieve(MsgNo, Using_POP3_IdMessage); Elaborate; SMTP.Connect; SendAutoResponse(Using_SMTP_IdMessage); SMTP.Disconnect; Copy_POP3_IdMessage_Into_SMTP_IdMessage; SMTP.Connect; SendMessageCopy(Using_SMTP_IdMessage); SMTP.Disconnect; POP3.Delete(MsgNo) end; POP3.Disconnect; I ask this because I'm still struggling with an error 10053 that happens when the execution arrives at the POP3.Delete instruction. If it can help, my ISP POP3 server and SMTP server are the same, but I don't think that it could be a problem (I hope . Thank you Salvatore Back to top Remy Lebeau (TeamB) Guest Posted: Thu Dec 16, 2004 4:30 am    Post subject: Re: Is it legal with Indy? "Salvatore Besso" <s.besso (AT) mclink (DOT) it> wrote Quote: I was wondering if it is legal, while a POP3 session is in progress, to open, work with and close SMTP sessions. Of course. The two have nothing to do with each other. Quote: Basically what I'm doing is more or less: Although what you are doing is technically legal (though it needs error handling added), I would suggest instead caching the POP3 messages, then disconnect and loop through the cache afterwards. Gambit Back to top Salvatore Besso Guest Posted: Thu Dec 16, 2004 12:08 pm    Post subject: Re: Is it legal with Indy? hello Remy, Quote: Of course. The two have nothing to do with each other. even if the POP3 server and the SMTP server addresses are the same? Quote: I would suggest instead caching the POP3 messages, then disconnect and loop through the cache afterwards. What do you suggest in this case? A dynamic array of TIdMessage's? A last question: If I cache as you suggest and disconnect, when I reconnect to the POP3 server do the message numbers retrieved stay consistent? Suppose I have retrieved and cached message number 22 and then disconnected. When I reconnect is the message 22 still the same as before and can I safely delete it? I don't want to accidentally delete the wrong message :-) Thank you and best Season's Greetings Salvatore Back to top Thomas Wegner Guest Posted: Thu Dec 16, 2004 4:20 pm    Post subject: Re: Is it legal with Indy? Quote: even if the POP3 server and the SMTP server addresses are the same? You can build a Server that contains SMTP, POP3, HTTP and FTP. This make not SMTP equal to FTP or HTTP , there are always different things also when you have a HTTP driven POP3 Client ! --------------------------------------------- Thomas Wegner Cabrio Meter - The Weather Plugin for Trillian http://www.wegner24.de "Salvatore Besso" <s.besso (AT) mclink (DOT) it> schrieb im Newsbeitrag news:41c17aad (AT) newsgroups (DOT) borland.com... Quote: hello Remy, Of course. The two have nothing to do with each other. even if the POP3 server and the SMTP server addresses are the same? I would suggest instead caching the POP3 messages, then disconnect and loop through the cache afterwards. What do you suggest in this case? A dynamic array of TIdMessage's? A last question: If I cache as you suggest and disconnect, when I reconnect to the POP3 server do the message numbers retrieved stay consistent? Suppose I have retrieved and cached message number 22 and then disconnected. When I reconnect is the message 22 still the same as before and can I safely delete it? I don't want to accidentally delete the wrong message :-) Thank you and best Season's Greetings Salvatore Back to top Lee_Nover Guest Posted: Fri Dec 17, 2004 7:44 am    Post subject: Re: Is it legal with Indy? Quote: Of course. The two have nothing to do with each other. even if the POP3 server and the SMTP server addresses are the same? yes Quote: I would suggest instead caching the POP3 messages, then disconnect and loop through the cache afterwards. What do you suggest in this case? A dynamic array of TIdMessage's? A ... or an objectlist of some sort loop thru messages, put them in the list, call delete per message then disconnect from pop3 and loop thru the list to process the messages Quote: last question: If I cache as you suggest and disconnect, when I reconnect to the POP3 server do the message numbers retrieved stay consistent? Suppose I have retrieved and cached message number 22 and then disconnected. When I reconnect is the message 22 still the same as before and can I safely delete it? I don't want to accidentally delete the wrong message the id's are stored per session if you get the list at one place (1-5) and at another place(different session) you delete msg (3), the msg 3 will still be valid for the first session but not for the second the actual deletion is done when all sessions are closed (to the same account ofcourse) Back to top Remy Lebeau (TeamB) Guest Posted: Fri Dec 17, 2004 10:43 am    Post subject: Re: Is it legal with Indy? "Salvatore Besso" <s.besso (AT) mclink (DOT) it> wrote Quote: even if the POP3 server and the SMTP server addresses are the same? Yes. There are completely different protocols running on their own independant sockets. Quote: What do you suggest in this case? A dynamic array of TIdMessage's? Yes. Quote: If I cache as you suggest and disconnect, when I reconnect to the POP3 server do the message numbers retrieved stay consistent? No, because you are deleting the messages before disconnecting. They won't be available anymore when you reconnect. If, on the other hand, you do not delete the messages, then the numbers are not guaranteed to be the same when you reconnect. That is dependant on the server's implementation. From your perspective, you can only rely on the numbers remaining the same while you are still connected. You need to treat them on a per-session basis. If you want to locate the message after re-connecting, then you need to look at the MsgID values rather than the index numbers. Quote: Suppose I have retrieved and cached message number 22 and then disconnected. When I reconnect is the message 22 still the same as before No, because you deleted it from the server before disconnecting. Gambit Back to top Salvatore Besso Guest Posted: Fri Dec 17, 2004 3:23 pm    Post subject: Re: Is it legal with Indy? hello all, thanks for your exahustive replies. For Gambit: Quote: Suppose I have retrieved and cached message number 22 and then disconnected. When I reconnect is the message 22 still the same as before No, because you deleted it from the server before disconnecting. I was meaning retrieved, cached and *not* deleted in the first session. The deletion should happen in the second session when I reconnect to the POP3 and only if message processing *succeeded*. So I asked if *only* in this case the message number stays consistent. I know that it would be more effcient and easy to retrieve, process, send auto-respnse messages and delete if successful in the same POP3 session, but as already mentioned I'm fighting against a subtle error 10053 when I'm trying to delete the message and I'm still not able to find the reason why it happens. Regards Salvatore Back to top Salvatore Besso Guest Posted: Fri Dec 17, 2004 5:02 pm    Post subject: Re: Is it legal with Indy? hello all, ok, don't mind anymore. I have finally resolved the error 10053 problem and I can perform all operations in the same session now. Thanks to all for the support. Season's Greetings Salvatore Back to top Remy Lebeau (TeamB) Guest Posted: Fri Dec 17, 2004 6:52 pm    Post subject: Re: Is it legal with Indy? "Salvatore Besso" <s.besso (AT) mclink (DOT) it> wrote Quote: ok, don't mind anymore. I have finally resolved the error 10053 problem and I can perform all operations in the same session now. What was the actual problem that was causing it? Gambit Back to top Salvatore Besso Guest Posted: Sat Dec 18, 2004 1:27 am    Post subject: Re: Is it legal with Indy? hello Gambit, Quote: ok, don't mind anymore. I have finally resolved the error 10053 problem and I can perform all operations in the same session now. What was the actual problem that was causing it? I have still to evaluate but it is very strange. The error disappeared when I have moved a whole try..except block to the outermost procedure. The scenario when the error was present was more or less as follows: ..... private procedure MyDataModule.RetrieveHeaders.... (might raise exceptions) procedure MyDataModule.RetrieveMessages.... (might raise exceptions) procedure MyDataModule.DoInternetImport.... begin try try .... Elaborate; (might raise exceptions) if Ok then SendAutoReplyWithSMTP; except Series of "on E: ExceptionType do..." with SendAutoReplyWithSMTP if necessary end finally .... end end; public procedure MyDataModule.ImportFromInternet.... begin try ConnectToInternet; Pop3Connect; DoSomeInit; RetrieveHeaders; RetrieveMessages; DoInternetImport finally Pop3Disconnect; DisconnectFromInternet end end; As you can see, I have moved the whole "try..except" block from DoInternetImport (private) to ImportFromInternet (public) that is the only method visible from the form that uses this data-module. Tomorrow I will investigate for the possible reasons that lead to the error 10053 and why it has been eliminated by simply moving the try..except block. Actually it is still a mystery. Anyway it seems more logic to me to have the exception control block in the outermost method and I don't know why I have put it there initially, maybe I was sleeping and programming at the same time...:-) Regards Salvatore Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> Delphi Internet Winsock All times are GMT Page 1 of 1   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.