BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  TIdUDPClient and other indy clients          BorlandTalk.com Forum Index -> Delphi Internet Winsock View previous topic :: View next topic   Author Message Miraka Guest Posted: Sun Aug 20, 2006 8:11 am    Post subject: TIdUDPClient and other indy clients How can I determine if the TIdUDPClient is ready to read the data.. there is no OnRead event. I know thaht Indy is blocking but isn't there a way to read the data only when it is available (I don't want to use TIdAntiFreeze). Currently I'm using a TIdUDPServer instead of TIdUDPClient because it has OnUDPRead event but this is not the correct way I think. Regards.. Back to top Remy Lebeau (TeamB) Guest Posted: Mon Aug 21, 2006 7:10 am    Post subject: Re: TIdUDPClient and other indy clients "Miraka" <ak_47 (AT) abv (DOT) bg> wrote in message news:44e80e21$1 (AT) newsgroups (DOT) borland.com... Quote: How can I determine if the TIdUDPClient is ready to read the data.. The only way to check for readibility, without actually reading, is to call the Binding's Readable() method. Otherwise, just read and let the client block until the data arrives. That is how Indy is primarily designed to be used. Quote: there is no OnRead event. For the large part, Indy is not an event driven library to begin with. Do not rely on events in client components (except for TIdTelnet or TIdIRC, which do have events when data arrives) to do your work. Just call a reading method and wait for the data to arrive. If you do not want to block the main UI thread, then do the reading in a worker thread. Quote: I know thaht Indy is blocking You are asking for a non-blocking solution. Quote: but isn't there a way to read the data only when it is available Indy (and blocking sockets in general) is designed to wait until the data is available. Call a reading method, and it will not exit until the data arrives, or until a timeout occurs. Quote: I don't want to use TIdAntiFreeze Then you have to do blocking reads in a worker thread. That is how Indy servers are able to provide such events, by the way. 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