At 1133813601s since epoch (12/05/05 09:13:21 -0500 UTC), Mark Elsen wrote: > > I have users that are complaining of failed uploads, mostly to picture > > sites (ofoto, shutterfly, snapfish), but also to other sites > > (facebook.com, myspace, etc). Checking the cache logs, the only > > suspicious activity are lines that look like this: > > > > (example of a Costco-branded snapfish upload) > > > > 2005/12/02 14:09:43| httpReadReply: Request not yet fully sent "POST > > http://64.147.178.206/uploadimagebasic.suup?authcode=<snip>& > > HOST_NAME=http://www.costcophotocenter.com"; > > > > Transparant proxy setups may leed to your squid host deciding > (or getting confused w.r.t.) > incorrect PMTU value(s). > > Does it work when the user is set to use the proxy directly, > by using proxy settings in the browser ? Excellent call; that does fix the issue! If you don't mind my asking, where should I begin looking to correct this issue? The firewall/router that's doing the redirection is an OpenBSD box running pf, and the squid box is Debian Stable with ip forwarding turned on to allow the transparent proxying (net.ipv4.ip_forward=1). I notice that Squid 3 has a setting to address this issue, and it seems to pertain to my setup (squid is not handling connection tracking; the oBSD box is). I'd prefer to stick with a stable release; is there any corrective action for this under 2.5 (such as disabling PMTU on the proxy machine entirely)? Thanks, Jason -- Jason Healy http://www.logn.net/
