[twsocket] SMTP connection limit
Hi Are there providers which limit the number of concurrent SMTP connections? In other words: Do I have to make the maximum number of connections for asynchronous operation flexible and what would be a good practice approach (besides making it user configurable). TIA Veit -- 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] TWSocket not connecting for me
Hi, I have a problem with TWSocket.State staying as wsConnecting after I try and connect. I am using a thread to execute an SQL query. For each result from this query, I connect to a remote server using the TWSocket, and send some data. That's the plan. In the Thread.Execute procedure, I have created the TWSocket, then I run through a state machine to query the database, make the connection etc. Does anyone know why .State would stay at wsConnecting? I can connect to the server manually using telnet, and I don't have any problems providing additional info. Just didn't want to overload the email at this point. Thanks, Andy -- 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] TWSocket not connecting for me
Do you have a message pump in the thread.execute? Regards, SZ - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 6:46 PM Subject: [twsocket] TWSocket not connecting for me Hi, I have a problem with TWSocket.State staying as wsConnecting after I try and connect. I am using a thread to execute an SQL query. For each result from this query, I connect to a remote server using the TWSocket, and send some data. That's the plan. In the Thread.Execute procedure, I have created the TWSocket, then I run through a state machine to query the database, make the connection etc. Does anyone know why .State would stay at wsConnecting? I can connect to the server manually using telnet, and I don't have any problems providing additional info. Just didn't want to overload the email at this point. Thanks, Andy -- 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: [twsocket] SMTP connection limit
Veit Zimmermann wrote: Hi Are there providers which limit the number of concurrent SMTP connections? Most likely. In other words: Do I have to make the maximum number of connections for asynchronous operation flexible and what would be a good practice approach (besides making it user configurable). I don't know how connections were rejected when the limit is reached. I think that multiple connections to the same mail server do not improve speed much. Probably the fastest method was sending multiple E-Mails in a single session one after the other. --- Arno Garrels [TeamICS] http://www.overbyte.be/eng/overbyte/teamics.html -- 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] TWSocket not connecting for me
SZ, Erm, I guess not. What do I need for that or where do I go to find out? Regards, Andy Fastream Technologies wrote: Do you have a message pump in the thread.execute? Regards, SZ - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 6:46 PM Subject: [twsocket] TWSocket not connecting for me Hi, I have a problem with TWSocket.State staying as wsConnecting after I try and connect. I am using a thread to execute an SQL query. For each result from this query, I connect to a remote server using the TWSocket, and send some data. That's the plan. In the Thread.Execute procedure, I have created the TWSocket, then I run through a state machine to query the database, make the connection etc. Does anyone know why .State would stay at wsConnecting? I can connect to the server manually using telnet, and I don't have any problems providing additional info. Just didn't want to overload the email at this point. Thanks, Andy -- 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: [twsocket] TWSocket not connecting for me
Maybe your problem is that when calling Connect you ask the component to connect. You get control back immediately (asynchronous method) while the component try to establish the connection for you. Once the connection is established, you have OnSessionConnected event which is triggered. This is where you can start playing with send/receive. -- Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html -- [EMAIL PROTECTED] http://www.overbyte.be - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 5:46 PM Subject: [twsocket] TWSocket not connecting for me Hi, I have a problem with TWSocket.State staying as wsConnecting after I try and connect. I am using a thread to execute an SQL query. For each result from this query, I connect to a remote server using the TWSocket, and send some data. That's the plan. In the Thread.Execute procedure, I have created the TWSocket, then I run through a state machine to query the database, make the connection etc. Does anyone know why .State would stay at wsConnecting? I can connect to the server manually using telnet, and I don't have any problems providing additional info. Just didn't want to overload the email at this point. Thanks, Andy -- 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: [twsocket] SMTP connection limit
Are there providers which limit the number of concurrent SMTP connections? In other words: Do I have to make the maximum number of connections for asynchronous operation flexible and what would be a good practice approach (besides making it user configurable). There is no limit imposed by the component. But the OS and of course the server will limit the number of concurrent connections. -- Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html -- [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] SMTP connection limit
Hello: Most ISP's SMTP servers limit the amount of concurrent connections from the same source to about 10 or 20. This is intended to prevent automatic spamming and mail bombing runs, or to at least hinder or limit their impact. This is pretty much an industry standard nowadays (along with rejecting connections from dynamic IP addresses). Making the limit configurable is a good idea, and I would suggest a default limit of no more than 20. Like Arno said in his post, asynchroneous connections to the same server do not necessarily increase performance significantly so it shouldn't matter that much to the user. -dZ. --- Original Message --- From: Veit Zimmermann[mailto:[EMAIL PROTECTED] Sent: 3/8/2007 6:42:03 AM To : twsocket@elists.org Cc : Subject : RE: [twsocket] SMTP connection limit Hi Are there providers which limit the number of concurrent SMTP connections? In other words: Do I have to make the maximum number of connections for asynchronous operation flexible and what would be a good practice approach (besides making it user configurable). TIA -- 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] TWSocket not connecting for me
Search for MessagePump/GetMessage API function in this list's archieve to learn more. The TWSocket also contains a messagepump() function to see. If you use sync methods, then the message pump is implicitly called until needed. The bad thing is that there is a single action done in the thread. If you want parallel execution in the same thread, use async/events plus GetMessage of your own. Best Regards, SubZero - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 7:37 PM Subject: Re: [twsocket] TWSocket not connecting for me SZ, Erm, I guess not. What do I need for that or where do I go to find out? Regards, Andy Fastream Technologies wrote: Do you have a message pump in the thread.execute? Regards, SZ - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 6:46 PM Subject: [twsocket] TWSocket not connecting for me Hi, I have a problem with TWSocket.State staying as wsConnecting after I try and connect. I am using a thread to execute an SQL query. For each result from this query, I connect to a remote server using the TWSocket, and send some data. That's the plan. In the Thread.Execute procedure, I have created the TWSocket, then I run through a state machine to query the database, make the connection etc. Does anyone know why .State would stay at wsConnecting? I can connect to the server manually using telnet, and I don't have any problems providing additional info. Just didn't want to overload the email at this point. Thanks, Andy -- 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: [twsocket] TWSocket not connecting for me
Francois, Thanks for the response. The .State parameter stays at wsConnecting for minutes - then I terminate. I am going to look at SZ's messagepump angle, as that sounds quite promising. Regards, Andy Francois PIETTE wrote: Maybe your problem is that when calling Connect you ask the component to connect. You get control back immediately (asynchronous method) while the component try to establish the connection for you. Once the connection is established, you have OnSessionConnected event which is triggered. This is where you can start playing with send/receive. -- Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html -- [EMAIL PROTECTED] http://www.overbyte.be - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 5:46 PM Subject: [twsocket] TWSocket not connecting for me Hi, I have a problem with TWSocket.State staying as wsConnecting after I try and connect. I am using a thread to execute an SQL query. For each result from this query, I connect to a remote server using the TWSocket, and send some data. That's the plan. In the Thread.Execute procedure, I have created the TWSocket, then I run through a state machine to query the database, make the connection etc. Does anyone know why .State would stay at wsConnecting? I can connect to the server manually using telnet, and I don't have any problems providing additional info. Just didn't want to overload the email at this point. Thanks, Andy -- 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: [twsocket] TWSocket not connecting for me
SZ, I had a look through the list and saw the ref's to get and peek etc. I did a grep on the source and decided to use TWSocket.ProcessMessages in my Thread.Execute loop. This seemed to work. The socket connects and I send my data.Are there going to be any pitfalls in doing this? Thanks for the help. regards, Andy Fastream Technologies wrote: Search for MessagePump/GetMessage API function in this list's archieve to learn more. The TWSocket also contains a messagepump() function to see. If you use sync methods, then the message pump is implicitly called until needed. The bad thing is that there is a single action done in the thread. If you want parallel execution in the same thread, use async/events plus GetMessage of your own. Best Regards, SubZero - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 7:37 PM Subject: Re: [twsocket] TWSocket not connecting for me SZ, Erm, I guess not. What do I need for that or where do I go to find out? Regards, Andy Fastream Technologies wrote: Do you have a message pump in the thread.execute? Regards, SZ - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 6:46 PM Subject: [twsocket] TWSocket not connecting for me Hi, I have a problem with TWSocket.State staying as wsConnecting after I try and connect. I am using a thread to execute an SQL query. For each result from this query, I connect to a remote server using the TWSocket, and send some data. That's the plan. In the Thread.Execute procedure, I have created the TWSocket, then I run through a state machine to query the database, make the connection etc. Does anyone know why .State would stay at wsConnecting? I can connect to the server manually using telnet, and I don't have any problems providing additional info. Just didn't want to overload the email at this point. Thanks, Andy -- 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: [twsocket] TWSocket not connecting for me
It's not that complex at all. So even if you have like, while(!Terminated) TWSocket.ProcessMessages(); it should be ok for simple use. There are some more complex use of GetMessage but not needed for single twsocket/thread. Best Regards, SZ - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 8:18 PM Subject: Re: [twsocket] TWSocket not connecting for me SZ, I had a look through the list and saw the ref's to get and peek etc. I did a grep on the source and decided to use TWSocket.ProcessMessages in my Thread.Execute loop. This seemed to work. The socket connects and I send my data.Are there going to be any pitfalls in doing this? Thanks for the help. regards, Andy Fastream Technologies wrote: Search for MessagePump/GetMessage API function in this list's archieve to learn more. The TWSocket also contains a messagepump() function to see. If you use sync methods, then the message pump is implicitly called until needed. The bad thing is that there is a single action done in the thread. If you want parallel execution in the same thread, use async/events plus GetMessage of your own. Best Regards, SubZero - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 7:37 PM Subject: Re: [twsocket] TWSocket not connecting for me SZ, Erm, I guess not. What do I need for that or where do I go to find out? Regards, Andy Fastream Technologies wrote: Do you have a message pump in the thread.execute? Regards, SZ - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 6:46 PM Subject: [twsocket] TWSocket not connecting for me Hi, I have a problem with TWSocket.State staying as wsConnecting after I try and connect. I am using a thread to execute an SQL query. For each result from this query, I connect to a remote server using the TWSocket, and send some data. That's the plan. In the Thread.Execute procedure, I have created the TWSocket, then I run through a state machine to query the database, make the connection etc. Does anyone know why .State would stay at wsConnecting? I can connect to the server manually using telnet, and I don't have any problems providing additional info. Just didn't want to overload the email at this point. Thanks, Andy -- 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 -- 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] TWSocket not connecting for me
Francois, Francois PIETTE wrote: I had not noticed you where using threads. SZ is right: you need a message pump in your thread. There are several multithread sample delivered with ICS-V5 (They are good for ICS-V6) btw: You frequently don't need thread with ICS because it is asynchronous and non-blocking. It multitask automatically WITHOUT using threads. Programming is then much easier... To date, I have used the components without additional threads. This is my first experience using threads. I had to do this because the SQL stuff I use (ADO) is blocking. If the SQL server is busy, or down, you get very large waits in your program. So I have moved the SQL stuff into it's own thread. The main thread still uses TWSocketServer to accept the client connects. Regards, Andy -- Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html -- [EMAIL PROTECTED] http://www.overbyte.be - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 6:49 PM Subject: Re: [twsocket] TWSocket not connecting for me Francois, Thanks for the response. The .State parameter stays at wsConnecting for minutes - then I terminate. I am going to look at SZ's messagepump angle, as that sounds quite promising. Regards, Andy Francois PIETTE wrote: Maybe your problem is that when calling Connect you ask the component to connect. You get control back immediately (asynchronous method) while the component try to establish the connection for you. Once the connection is established, you have OnSessionConnected event which is triggered. This is where you can start playing with send/receive. -- Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html -- [EMAIL PROTECTED] http://www.overbyte.be - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 5:46 PM Subject: [twsocket] TWSocket not connecting for me Hi, I have a problem with TWSocket.State staying as wsConnecting after I try and connect. I am using a thread to execute an SQL query. For each result from this query, I connect to a remote server using the TWSocket, and send some data. That's the plan. In the Thread.Execute procedure, I have created the TWSocket, then I run through a state machine to query the database, make the connection etc. Does anyone know why .State would stay at wsConnecting? I can connect to the server manually using telnet, and I don't have any problems providing additional info. Just didn't want to overload the email at this point. Thanks, Andy -- 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: [twsocket] TWSocket not connecting for me
I do not think TWSocketServer is thread-safe! Am I wrong? Regards, SZ - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 9:45 PM Subject: Re: [twsocket] TWSocket not connecting for me Francois, Francois PIETTE wrote: I had not noticed you where using threads. SZ is right: you need a message pump in your thread. There are several multithread sample delivered with ICS-V5 (They are good for ICS-V6) btw: You frequently don't need thread with ICS because it is asynchronous and non-blocking. It multitask automatically WITHOUT using threads. Programming is then much easier... To date, I have used the components without additional threads. This is my first experience using threads. I had to do this because the SQL stuff I use (ADO) is blocking. If the SQL server is busy, or down, you get very large waits in your program. So I have moved the SQL stuff into it's own thread. The main thread still uses TWSocketServer to accept the client connects. Regards, Andy -- Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html -- [EMAIL PROTECTED] http://www.overbyte.be - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 6:49 PM Subject: Re: [twsocket] TWSocket not connecting for me Francois, Thanks for the response. The .State parameter stays at wsConnecting for minutes - then I terminate. I am going to look at SZ's messagepump angle, as that sounds quite promising. Regards, Andy Francois PIETTE wrote: Maybe your problem is that when calling Connect you ask the component to connect. You get control back immediately (asynchronous method) while the component try to establish the connection for you. Once the connection is established, you have OnSessionConnected event which is triggered. This is where you can start playing with send/receive. -- Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html -- [EMAIL PROTECTED] http://www.overbyte.be - Original Message - From: info2004 [EMAIL PROTECTED] To: ICS support mailing twsocket@elists.org Sent: Thursday, March 08, 2007 5:46 PM Subject: [twsocket] TWSocket not connecting for me Hi, I have a problem with TWSocket.State staying as wsConnecting after I try and connect. I am using a thread to execute an SQL query. For each result from this query, I connect to a remote server using the TWSocket, and send some data. That's the plan. In the Thread.Execute procedure, I have created the TWSocket, then I run through a state machine to query the database, make the connection etc. Does anyone know why .State would stay at wsConnecting? I can connect to the server manually using telnet, and I don't have any problems providing additional info. Just didn't want to overload the email at this point. Thanks, Andy -- 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 -- 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] TWSocket not connecting for me
btw: You frequently don't need thread with ICS because it is asynchronous and non-blocking. It multitask automatically WITHOUT using threads. Programming is then much easier... To date, I have used the components without additional threads. This is my first experience using threads. I had to do this because the SQL stuff I use (ADO) is blocking. Well, ADO component have an asynchronous option and they become non-blocking ! If the SQL server is busy, or down, you get very large waits in your program. So I have moved the SQL stuff into it's own thread. Having a separate thread for data processing is good design. Trying to push everything - communication and dataprocessing - in the same thread is bad design. -- Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html -- [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
