[twsocket] Little question... TList of HTTPCli
Hello ;-) It's me again... Just one little question... When i have a TList of busy HTTPCli'ents how do i know which one should i remove on OnRequestDone event? Thank you, Ann -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] ProcessMessages
There are two other components in the dll which suffer from the very same problem. One is the timer and another is one for the other communication method which doesn't have a processmessages. Obviously, you failed to have a working message pump. Do you have any hints for these as well? Study the IcsDll1 sample program ! -- [EMAIL PROTECTED] http://www.overbyte.be - Original Message - From: [EMAIL PROTECTED] To: TWSocket@elists.org Sent: Tuesday, May 03, 2005 10:22 AM Subject: [twsocket] ProcessMessages Hello, I think I must describe my problem a bit more detailed than before. I'm building a dll to encapsulate my communication routines to some extend. The dll manages all connections. When a new udp connection is to be made, a handle of my own type is allocated (I have other communication types implemented in the same dll) and the adress of a callback procedure is given. With this handle data can be sent out. The dll contains a data odlue with one TWSocket for receiving udp data. his is configured on a fixed ip/port on the local pc and if data is received, it looks in the handle list which callback is to be called (depending on the ip of the sender). The data is passed to this callback then. My test for this is an application which continously requests data from a hardware device and checks if the packets received are correct. This app. is a vcl one. If it has application.processmessages in its loop, all works as expected. But: my dll will later not be used by a vcl application but by a bunch of other dlls, so application.processmessages is not feasible. I discovered now that twsocket also has processmessages. I tried to set up a single thread in the dll which continously calls processmessages on that fixed socket (the receiving one, the sending sockets are created dynamically when a new connection gets added and get destroyed when the connection is closed [normally at the end of the program in my case]). t doesn't work. The thread is called, but data isn't received. There are two other components in the dll which suffer from the very same problem. One is the timer and another is one for the other communication method which doesn't have a processmessages. Do you have any hints for these as well? I'm stuck richt now... Greetings Markus Humm -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] Messages
Hello, does a sending TWSocket need to have its messages processed? If yes how is this done? A simple loop directly after sending which calls processmessages of the socket? Greetings Markus Humm -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
AW: [twsocket] ProcessMessages
There are two other components in the dll which suffer from the very same problem. One is the timer and another is one for the other communication method which doesn't have a processmessages. Obviously, you failed to have a working message pump. Do you have any hints for these as well? Study the IcsDll1 sample program ! Okay, did I understood it right: - the receiving TWSocket can't be a static component on the datamodule because it has to be in a thread? - the sending TWSocket doen't need to be created in an thread because that sends at once (nearly) without the need of windows messages Greetings Markus -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] Messages
Hello Markus, You can use the messagepump of one of the TWSocket you creeate. Be sure to set MultiThreaded to True; You have to create all components IN Execute method of the thrad, assigne all events, and then just call the messagepump of 1 of the components. Dont forget to destroy all components also in Execute method before it ends. --- Rgds, Wilfried http://www.mestdagh.biz -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] Messages
does a sending TWSocket need to have its messages processed? Yes, it have to. If yes how is this done? A simple loop directly after sending which calls processmessages of the socket? Anything that makes messages properly processed is good. But be aware of the context where it is called. You can't call the message pump from anywhere. -- [EMAIL PROTECTED] http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] ProcessMessages
- the receiving TWSocket can't be a static component on the datamodule because it has to be in a thread? Yes, the component has to be _created_ within the context of the thread that will handle his events. In case of TWSocket, you have ThreadDetach and ThreadAttach methods if it is not possible to create the component within the thread execute. But those method have a drawback; between the two, the component will not handle his events ! So it is much better to create the component directly in the correct thread context. - the sending TWSocket doen't need to be created in an thread because that sends at once (nearly) without the need of windows messages Wrong. Sending and receiving btoh use messages, even if in some cases it seems to be direct. -- [EMAIL PROTECTED] http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
RE: [twsocket] Little question... TList of HTTPCli
In C++ I would do something like this: int index=list-Remove(Sender); If Sender (your httpcli) is in that list, it will be removed, and it will return the index of the position before it is removed if the Sender was in the list. You should see the helpfiles, many examples and usefull hints there.. Regards Bjørnar -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ann Sent: 3. mai 2005 13:53 To: ICS support mailing Subject: Re: [twsocket] Little question... TList of HTTPCli yes but im not asking about sender but how do i find this sender in tlist of components... do i have to make something like this or is there easier way? for i:=0 to list.item.count-1 do begin if list.item[i] = sender then this_is_the_one? break; end; - Original Message - From: Francois Piette [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Tuesday, May 03, 2005 11:26 AM Subject: Re: [twsocket] Little question... TList of HTTPCli Just one little question... When i have a TList of busy HTTPCli'ents how do i know which one should i remove on OnRequestDone event? You have the sender argument in OnRequestDone. It's the Http component that sent the event. You can cast it to THttpCli and do whatever you like. btw: This is basic Delphi programming. The sender argument of any event always refers to the component source of the event. You always need it when the same handler is used for many components. -- [EMAIL PROTECTED] http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: AW: [twsocket] Messages
Hello Markus, If you call the message pump, then depending on who called your code, your function can be re-entered. For example if the caller himself comes from the messagepump then it can be calling again if message in queue. Most of the time pumping messages in code is a bad idea and should not be done (this sayed I just did it in a program of mine for the first time in my life with a big 'Todo:' in it :) --- Rgds, Wilfried http://www.mestdagh.biz -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] FTPCli. Problem with QUIT
Hello All I have an application that use FTPCLI to fetch some files from a server. Async is used. It runs on a number of PC's. On a single PC running XP I sometimes have trouble quiting from a FTP server (WEB6 Microsoft FTP Service (Version 5)). The ICS version used was downloaded the 9/3-05 - I'm currently trying to get the error with the latest version. Here is how it looks in the log when the QUIT command is send. QUIT Disconnected,10053FTPSessionClosed RequestDone: 15, 500, 43, 33, 22, 0 FTPRequestDone Disconnect returns an 10053 winsock error and RequestDone returns FTP error 500. Is this a known problem? Could the problem be timing when the control socket is closed? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] Messages
You can't call the message pump from anywhere. Where would it be impossible? Each time you call the message pump, you trigger message processing. If you trigger message processing, you must be prepared to have your event reentered. Basically it is not a problem but actually it is since most event handler are not reentrant. -- [EMAIL PROTECTED] http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] Messages
udp.addr :=ip; What IP address do you use ? It must be either '0.0.0.0' or the IP address of the network interface you want to listen to. -- [EMAIL PROTECTED] http://www.overbyte.be - Original Message - From: [EMAIL PROTECTED] To: twsocket@elists.org Sent: Tuesday, May 03, 2005 5:14 PM Subject: [twsocket] Messages Hello, after sendin I have now (only for test purposes) a 100 ms loop which calls twsocket's processmessages. The result is, that sending now works fine again from the test app. and the test app. responds to mouse clicks etc. again. For the receiving part I did this (the contents of tthread execute): try udp:=TWSocket.Create(nil); udp.addr :=ip; udp.Port :=port; udp.Proto :='udp'; udp.SendFlags :=wsSendNormal; udp.MultiThreaded :=true; udp.OnDataAvailable:=dm.udpDataAvailable; udp.Listen; udp.MessageLoop; except exit; end; with dm.udpdataavailable the former dataavailable from the socket which was placed statically on a datamodule and did formerly the receiving part. The thread is started, but can't receive anything. OnDataAvailable doesn't fire although there is data available. What's wrong with it? It seems I'm near the solution, but haven't got it yet. Greetings Markus Humm -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re[2]: [twsocket] Messages
Hello Bjørnar, Is the code really running in thread-context? Good point. He has to check (but I alrady think I mentioned this) that MultiThreaded is set to True. Try GetCurrentThreadId to check current thread context. --- Rgds, Wilfried http://www.mestdagh.biz -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] Messages
Hello Markus, For the receiving part I did this (the contents of tthread execute): udp.MessageLoop; Are you very sure this is exacly what you want ? MessageLoop will pump messages, but will actually stay there until a WM_QUIT is received. If you dont watch carefully you will end up with a lots of loops pumping messages and consuming CPU in your application. In my opinion you are making it very difficult trying to sequentional programming with event driven components. In fact you onle need in Execute method of thread: // create all of your components // assigne all event handlers Sock.MessageLoop; // destroy them all that's all you have to do ! all the rest is the same as in normal programming with the exception that you have to do thread safe code of course ! --- Rgds, Wilfried http://www.mestdagh.biz Tuesday, May 3, 2005, 17:14, [EMAIL PROTECTED] wrote: Hello, after sendin I have now (only for test purposes) a 100 ms loop which calls twsocket's processmessages. The result is, that sending now works fine again from the test app. and the test app. responds to mouse clicks etc. again. For the receiving part I did this (the contents of tthread execute): try udp:=TWSocket.Create(nil); udp.addr :=ip; udp.Port :=port; udp.Proto :='udp'; udp.SendFlags :=wsSendNormal; udp.MultiThreaded :=true; udp.OnDataAvailable:=dm.udpDataAvailable; udp.Listen; udp.MessageLoop; except exit; end; with dm.udpdataavailable the former dataavailable from the socket which was placed statically on a datamodule and did formerly the receiving part. The thread is started, but can't receive anything. OnDataAvailable doesn't fire although there is data available. What's wrong with it? It seems I'm near the solution, but haven't got it yet. Greetings Markus Humm -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: Re[2]: [twsocket] Little question... TList of HTTPCli
- Original Message - From: Wilfried Mestdagh [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Tuesday, May 03, 2005 2:08 PM Subject: Re[2]: [twsocket] Little question... TList of HTTPCli Hello Ann, Yes. What you also can do is: i := List.IndexOf(Sender); Then i is the index in the List where Sender is, or -1 if not found and you can thus use it to add the right item to another list and/or remove it etc... Thank you guys! I love ya! :-) Ann -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
