Re: [twsocket] HttpCli Keep-alive
The keep-alive message consume a lot of traffic also. After 5 seconds inactivity, the first keep-alive message is sent. After that, these messages are coming continuously. Also, the communication of the 2 clients could perfectly be handled by 1 client, but currently 1 client has to send streams using Post and the other has to send a string using Get. I've tried to do both with 1 client, but the THttpCli fails here. If it has posted a few streams and then sends a string using Get, it often fails. I've tested this with V5 and V7. It only works if I close the THttpCli after each request. Paul - Original Message - From: "Francois PIETTE" To: "ICS support mailing" Sent: Friday, March 06, 2009 7:56 AM Subject: Re: [twsocket] HttpCli Keep-alive > It always take sometimes to negociate a connection opening between two > computers. They must exchange a few packets before the connection is > established. The time taken depends, imo, mostly of the round-trip time. > > -- -- 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] HttpCli Keep-alive
It always take sometimes to negociate a connection opening between two computers. They must exchange a few packets before the connection is established. The time taken depends, imo, mostly of the round-trip time. -- 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 - Original Message - From: "Paul" To: "ICS support mailing" Sent: Thursday, March 05, 2009 9:48 PM Subject: Re: [twsocket] HttpCli Keep-alive > Hi Francois, > > I think you misunderstood the question. > 3 clients are connected to the same server. > 1 client has a keep-alive connection and the the most part of the job. > Sometimes, 2 other clients have to send or receive additional data. > To keep the server load as low as possible, I'm now testing with a > connection close for those 2 other clients. > My questions is : would there be any speed penalty for the 2 clients that > now use a connection-close instead of keep-alive. > I can't see any difference here, but it's a high speed line. > Maybe there is no difference at all, since the first connection > (keep-alive) > keeps the route open to the server. > It would lower the server load since it doesn't have to send keep-alives > to > the other 2 clients. > > Paul > > > > - Original Message - > From: "Francois PIETTE" > To: "ICS support mailing" > Sent: Thursday, March 05, 2009 9:23 PM > Subject: Re: [twsocket] HttpCli Keep-alive > > >>> I have one client that is connected with a keep-alive connection that >>> continuosly sends commands. >>> The other 2 clients send or receive commands when there are command >>> available, but far less frequent than the first one. >>> Is it neccesary to set the connection keep-alive for the other 2 clients >>> ? >>> I'm testing with them without keep-alive and I can see no difference, >>> but >>> it's hard to see here on a 35Mb/s line >> >> There is a tradeof between performance (with keep-alive) and server load >> (much more simultaneous connections with keep-alive). >> The server has always the possibility to close the connection even if >> keep-alive is requested. >> >> -- >> 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 >> >> -- >> 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 -- 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] HttpCli Keep-alive
Hi Francois, I think you misunderstood the question. 3 clients are connected to the same server. 1 client has a keep-alive connection and the the most part of the job. Sometimes, 2 other clients have to send or receive additional data. To keep the server load as low as possible, I'm now testing with a connection close for those 2 other clients. My questions is : would there be any speed penalty for the 2 clients that now use a connection-close instead of keep-alive. I can't see any difference here, but it's a high speed line. Maybe there is no difference at all, since the first connection (keep-alive) keeps the route open to the server. It would lower the server load since it doesn't have to send keep-alives to the other 2 clients. Paul - Original Message - From: "Francois PIETTE" To: "ICS support mailing" Sent: Thursday, March 05, 2009 9:23 PM Subject: Re: [twsocket] HttpCli Keep-alive >> I have one client that is connected with a keep-alive connection that >> continuosly sends commands. >> The other 2 clients send or receive commands when there are command >> available, but far less frequent than the first one. >> Is it neccesary to set the connection keep-alive for the other 2 clients >> ? >> I'm testing with them without keep-alive and I can see no difference, but >> it's hard to see here on a 35Mb/s line > > There is a tradeof between performance (with keep-alive) and server load > (much more simultaneous connections with keep-alive). > The server has always the possibility to close the connection even if > keep-alive is requested. > > -- > 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 > > -- > 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] HttpCli Keep-alive
> I have one client that is connected with a keep-alive connection that > continuosly sends commands. > The other 2 clients send or receive commands when there are command > available, but far less frequent than the first one. > Is it neccesary to set the connection keep-alive for the other 2 clients ? > I'm testing with them without keep-alive and I can see no difference, but > it's hard to see here on a 35Mb/s line There is a tradeof between performance (with keep-alive) and server load (much more simultaneous connections with keep-alive). The server has always the possibility to close the connection even if keep-alive is requested. -- 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 -- 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
