BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Socket Error # 10040 Message To Long          BorlandTalk.com Forum Index -> C++ Builder (Internet Socket) View previous topic :: View next topic   Author Message Jonathan Benedicto Guest Posted: Sat Feb 19, 2005 8:01 pm    Post subject: Socket Error # 10040 Message To Long I'm building an application that transmite data packets using the Indy UDP set. But, I've been encountering a exception being thrown in my code. The exception is Socket Error # 10040 Message too long. The exception happens right at this line, where DataSize is a int. if(UdpClient->ReceiveBuffer(&DataSize, sizeof(int), 1000) == sizeof(int)){ Is the remote server (I built this too) sending too much data, or have I not built this client right. Thank you for any help. -- Jonathan Back to top Bob Gonder Guest Posted: Sat Feb 19, 2005 11:44 pm    Post subject: Re: Socket Error # 10040 Message To Long Jonathan Benedicto wrote: Quote: But, I've been encountering a exception being thrown in my code. The exception is Socket Error # 10040 Message too long. The exception happens right at this line, where DataSize is a int. if(UdpClient->ReceiveBuffer(&DataSize, sizeof(int), 1000) == sizeof(int)){ Is that a TIdUDPClient ? That doesn't look right. I see 2 versions of ReceiveBuffer() One with 2 arguments and one with 4. Neither one has a size parameter. (Indy 10 on-line manual) Back to top Remy Lebeau (TeamB) Guest Posted: Sat Feb 19, 2005 11:48 pm    Post subject: Re: Socket Error # 10040 Message To Long "Jonathan Benedicto" <incorrect (AT) no (DOT) server> wrote Quote: But, I've been encountering a exception being thrown in my code. The exception is Socket Error # 10040 Message too long. WSAEMSGSIZE (10040) Message too long. A message sent on a datagram socket was larger than the internal message buffer or some other network limit, or the buffer used to receive a datagram into was smaller than the datagram itself. Gambit Back to top Jonathan Benedicto Guest Posted: Sat Feb 19, 2005 11:53 pm    Post subject: Re: Socket Error # 10040 Message To Long Yes it is TIdUDPClient. I use Indy 9, and my compiler didn't give any errors. I'll have to check that. -- Jonathan "Bob Gonder" <notbg (AT) notmindspring (DOT) invalid> wrote Quote: Jonathan Benedicto wrote: But, I've been encountering a exception being thrown in my code. The exception is Socket Error # 10040 Message too long. The exception happens right at this line, where DataSize is a int. if(UdpClient->ReceiveBuffer(&DataSize, sizeof(int), 1000) == sizeof(int)){ Is that a TIdUDPClient ? That doesn't look right. I see 2 versions of ReceiveBuffer() One with 2 arguments and one with 4. Neither one has a size parameter. (Indy 10 on-line manual) Back to top Jonathan Benedicto Guest Posted: Sat Feb 19, 2005 11:55 pm    Post subject: Re: Socket Error # 10040 Message To Long Do you think it is caused by my reading just a int-sized chunk of the datagram ? Because I don't know how long the datagram is going to be. That first int is a length. -- Jonathan "Remy Lebeau (TeamB)" <no.spam (AT) no (DOT) spam.com> wrote Quote: WSAEMSGSIZE (10040) Message too long. A message sent on a datagram socket was larger than the internal message buffer or some other network limit, or the buffer used to receive a datagram into was smaller than the datagram itself. Gambit Back to top Jonathan Benedicto Guest Posted: Sun Feb 20, 2005 12:34 am    Post subject: Re: Socket Error # 10040 Message To Long I just checked it, and in Indy 9, the ReceiveBuffer methods take 3 and 5 parameters. -- Jonathan Back to top Chad Z. Hower aka Kudzu Guest Posted: Tue Feb 22, 2005 2:10 pm    Post subject: Re: Socket Error # 10040 Message To Long "Jonathan Benedicto" <incorrect (AT) no (DOT) server> wrote in news:4217d1de (AT) newsgroups (DOT) borland.com: Quote: Do you think it is caused by my reading just a int-sized chunk of the datagram ? Because I don't know how long the datagram is going to be. That first int is a length. Yes. You need to limit yourself. Windows has a max of 32k, some routers less. To be ultra safe, stick to 1k. Ive found in practice that 8k works pretty reliably though. -- Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/ "Programming is an art form that fights back" Want more Indy stuff? Try the Atozed Indy Portal at http://www.atozedsoftware.com/ * More Free Demos * Free Articles * Extra Support Back to top Jonathan Benedicto Guest Posted: Tue Feb 22, 2005 4:38 pm    Post subject: Re: Socket Error # 10040 Message To Long Thank you for this info. I'm going to change how my system works, so that it send / receives a max of 204 bytes. -- Jonathan Quote: Yes. You need to limit yourself. Windows has a max of 32k, some routers less. To be ultra safe, stick to 1k. Ive found in practice that 8k works pretty reliably though. Back to top Remy Lebeau (TeamB) Guest Posted: Tue Feb 22, 2005 6:47 pm    Post subject: Re: Socket Error # 10040 Message To Long "Jonathan Benedicto" <incorrect (AT) no (DOT) server> wrote Quote: Do you think it is caused by my reading just a int-sized chunk of the datagram ? No. The datagram itself is too large for the socket to buffer internally before your own code then reads it from the buffer. Once in the buffer, it doesn't matter how your code reads it. But the socket has to receive and buffer it first, and that is where the error is coming from. Gambit Back to top Jonathan Benedicto Guest Posted: Tue Feb 22, 2005 8:59 pm    Post subject: Re: Socket Error # 10040 Message To Long Quote: No. The datagram itself is too large for the socket to buffer internally before your own code then reads it from the buffer. Once in the buffer, it doesn't matter how your code reads it. But the socket has to receive and buffer it first, and that is where the error is coming from. When I changed the code to read 8192 bytes into a memory stream, then the error disappeared. I did tests on it, and it did seem like the error was caused by the tiny read. For example, this code does not give a error : TMemoryStream* s = new TMemoryStream(); s->SetSize(8192); int size = UdpClient->ReceiveBuffer(s->Memory, s->Size, 1000); But this code returns a message too long error : int size = UdpClient->ReceiveBuffer(buffer, 4, 1000); Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> C++ Builder (Internet Socket) 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.