Re: [twsocket] multithread server
hi, I always call Receive (even if RcvdCount returns zero). When RcvdCount returns zero then Receive returns -1 value. Is it normal? What is property Multithreaded in TWServerSocket? Should it be set to TRUE? In demo application property is set to FALSE and only client sockets are set to TRUE. Now I have no idea where is problem with service hanging. Any idea where to look is welcome. Thanks Lukas Skala Dne 17.8.2011 18:18, Wilfried Mestdagh napsal(a): Hi, If OnDataAvailable triggers then you have to try to receive data, even if RcvdCount (wich is unreliable) returns 0. If you don't receive then OnDataAvailable will be called again in a closed loop en that is probably what happens. -- lukas skala envinet a.s. divize projektu a inzenyringu (project and engineering division) modrinova 1094 674 01 trebic tel: +420 568 409 862 (811) fax: +420 568 409 875 gsm: +420 724 461 062 icq: 66842878 eml: lukas.sk...@envinet.cz, luky.sk...@gmail.com www: http://envinet.cz -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] ICS v5: Raw sockets
Hi Folks, Is it possible to use raw sockets with ICS v5? I am using Delphi 2007 but each time I try to set this up, I get a failure when binding i.e. after invoking the Listen method. Thanks in advance -Mohamed -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] SSL and TLS for TSmtpCli
Neal Barnett wrote: > Arno - > >> or >> Encrypted Connection: SSL >> Port: 465 > >>> This is commonly SSL-type "Implicit (TLS Connection)". >>> The difference between Implicit and Explicit is that Implicit >>> establishes > a secure SSL/TLS connection and Explicit starts with a plain text >>> connection that is turned into a secure connection later when the >>> client sends the "STARTTLS" command. > > So, how would I use this method "Implicit (TLS Connection)" in > TSmtpCli? > >> For example, if I wish to send using: >> Encrypted Connection: TLS >> Port: 587 > >>> That port can be used if the ISP has blocked SMTP port #25 and the > mailserver services port #587 as well. Such as >>> smtp.googlemail.com. The SSL-type on that port is commonly >>> "Explicit (STARTTLS)". > > And how would I use this method in TSmtpCli? Instead of TSmtpCli you have to use TSslSmtpCli plus a linked TSslContext. Take a look at the OverbyteIcsSslMailSnd sample in ICS sub directory SslInternet, get a free GMail account and play with the demo. And don't forget to download the OpenSSL libraries from http://wiki.overbyte.be/wiki/index.php/ICS_Download. -- Arno Garrels -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] multithread server
Hi, If OnDataAvailable triggers then you have to try to receive data, even if RcvdCount (wich is unreliable) returns 0. If you don't receive then OnDataAvailable will be called again in a closed loop en that is probably what happens. -- mvg, Wilfried http://www.mestdagh.biz http://www.comfortsoftware.be http://www.expertsoftware.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] SSL and TLS for TSmtpCli
Arno - > or > Encrypted Connection: SSL > Port: 465 >>This is commonly SSL-type "Implicit (TLS Connection)". >>The difference between Implicit and Explicit is that Implicit establishes a secure SSL/TLS connection and Explicit starts with a plain text >>connection that is turned into a secure connection later when the client sends the "STARTTLS" command. So, how would I use this method "Implicit (TLS Connection)" in TSmtpCli? > For example, if I wish to send using: > Encrypted Connection: TLS > Port: 587 >>That port can be used if the ISP has blocked SMTP port #25 and the mailserver services port #587 as well. Such as >> smtp.googlemail.com. The SSL-type on that port is commonly "Explicit (STARTTLS)". And how would I use this method in TSmtpCli? Thanks, -- Neal -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] multithread server
Sometimes Windows triggers OnDataAvailable when no data is actually available. This is how it works. It is safe to ignore it. The most important is to call Recv (or any derivative) anyway. Using RcvdCount to decide to call or no Recv is wrong. Always call Recv which is the only one to actually reset winsock internal flag. francois.pie...@overbyte.be The author of the freeware multi-tier middleware MidWare The author of the freeware Internet Component Suite (ICS) http://www.overbyte.be -Message d'origine- From: Lukas Skala Sent: Wednesday, August 17, 2011 4:01 PM To: twsocket@elists.org Subject: [twsocket] multithread server hello, I have tcp server (developed as Windows Service) based on OverbyteIcsThrdSrv1.pas demo. There is maximum of 200 clients. Server is hanging after some time of running - it is unable to connect any new client. I have added log in all events of TWSocketServer (оn events start line and events end line). So I know that program is not hanging in any events. I have some timer in service also and operation inside OnTimer events are also logged. When server is hanged timer event is no more triggered - it seems that main thread is very busy by triggering OnClientDataAvailable - but in fact no data are incoming, function RcvdCount in OnClientDataAvailable events returns zero and function Receive returns -1 length (see part of log below please). Please what does it means (why is this event triggered when no data are incoming?) and how to avoid this behaviour? 17.08.11 15:42:52 I ClientDataAvailable started. 17.08.11 15:42:52 I Received from 89.24.4.161: 0 byte(s). 17.08.11 15:42:52 D Received -1 byte(s). 17.08.11 15:42:52 I ClientDataAvailable ended. Thanks for any idea. Lukas -- lukas skala envinet a.s. divize projektu a inzenyringu (project and engineering division) modrinova 1094 674 01 trebic tel: +420 568 409 862 (811) fax: +420 568 409 875 gsm: +420 724 461 062 icq: 66842878 eml: lukas.sk...@envinet.cz, luky.sk...@gmail.com www: http://envinet.cz -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] thread safety and async operation
Basically you answered what I needed to know. As long as no ProcessMessages is called it is safe to use in non-thread safe environment with single thread. Thanks for the answer. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] multithread server
hello, I have tcp server (developed as Windows Service) based on OverbyteIcsThrdSrv1.pas demo. There is maximum of 200 clients. Server is hanging after some time of running - it is unable to connect any new client. I have added log in all events of TWSocketServer (оn events start line and events end line). So I know that program is not hanging in any events. I have some timer in service also and operation inside OnTimer events are also logged. When server is hanged timer event is no more triggered - it seems that main thread is very busy by triggering OnClientDataAvailable - but in fact no data are incoming, function RcvdCount in OnClientDataAvailable events returns zero and function Receive returns -1 length (see part of log below please). Please what does it means (why is this event triggered when no data are incoming?) and how to avoid this behaviour? 17.08.11 15:42:52 I ClientDataAvailable started. 17.08.11 15:42:52 I Received from 89.24.4.161: 0 byte(s). 17.08.11 15:42:52 D Received -1 byte(s). 17.08.11 15:42:52 I ClientDataAvailable ended. Thanks for any idea. Lukas -- lukas skala envinet a.s. divize projektu a inzenyringu (project and engineering division) modrinova 1094 674 01 trebic tel: +420 568 409 862 (811) fax: +420 568 409 875 gsm: +420 724 461 062 icq: 66842878 eml: lukas.sk...@envinet.cz, luky.sk...@gmail.com www: http://envinet.cz -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
