So this is a Cygwin issue and not a ssh issue (i.e. you're saying it works fine if the Cygwin ssh isn't in the loop)?
Larry Original Message: ----------------- From: Brian Genisio [EMAIL PROTECTED] Date: Tue, 29 Oct 2002 14:06:37 -0800 (PST) To: [EMAIL PROTECTED] Subject: SSH Tunneling and TCP_NODELAY Hi all, I am using SSH port forwarding on a linux sshd from the Cygwin ssh. Both sides have version OpenSSH 3.4p1. There is no problem with my tunneling, as I have been using many (about 10) port forwards (server and local) for quite some time now. A new application has been introduced to my mix that uses the network to send control messages at about 30 times per second. These messages are small (4-12 bytes), but sent at a frequent rate. If port forwarding is NOT used, the control stream is working well. BUT, if I send the control string through the SSH tunnel, it gets sent as bursts... for example, the receiving application wukk get no data for 5 frames, and the 6th frame will get all 6 frames. This makes for a jerky control of the software. My control program has TCP_NODELAY set in it's ouput socket which is why it works properly. I _thought_ that openssh starting at version 3.1 had TCP_NODELAY set on it's forwarded ports (my debug outputs tell me so). None the less, the bursting (which I believe is a cacheing at some point) still happens. My question: Is there something about the Cygwin version of SSH where TCP_NODELAY doesnt work properly, or it is a stub function? Can anyone think of a reason this is happening? Thanks, Brian __________________________________________________ Do you Yahoo!? HotJobs - Search new jobs daily now http://hotjobs.yahoo.com/ -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/ -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ . -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
