I am running Zope as a service under WinNT workstation. I am running it behind "Personal Web Server". Problem is that pcgi_wrapper.exe seems to hang. If I access a page with a large graphic on it I might get the page but the graphic will not come but it will still try loading it. Anyone had a similar problem?
There seem to be a variety of reasons for pgi_wrapper to hang on NT. In my case, running behind Netscape it hangs when someone requests an objects and then closes the connection before the object is sent back from pcgi_wrapper to the Netscape server. In this situation it appears that Netscape fails to close the pipe, but never reads from it. I think there may also be a situation where the NT version can hang if Zope throws an exception within its handling of the pcgi request (pcgiReadSocket checks its result only for SOCKET_ERROR whereas pcgiRead checks for any error or for a 0 return). When Zope throws an exception it can close its socket without writing the data and the recv call then repeatedly returns 0. You should be able to tell if this is the problem because the hung pcgi_wrapper will be consuming all available CPU. If it hangs because the output pipe is closed it consumes no CPU. What I can offer anyone who is having problems with pcgi_wrapper on NT is a specially patched version that shoots itself after it has been running for 1 hour (or any other delay if you recompile it). As a bonus, when it does shoot itself it writes the the pcgi logfile a message telling you on which line it hung. Unfortunately (confession time) I don't seem to have saved a copy of the source for the version that prints out the line number, just the binary. I do have source though for the version that shoots itself, but doesn't tell you how far it got. I have uploaded the relevant files to http://www.zope.org/Members/Duncan/pcgimods -- Duncan Booth duncan@dales.rmplc.co.uk int month(char *p){return(124864/((p[0]+p[1]-p[2]&0x1f)+1)%12)["\5\x8\3" "\6\7\xb\1\x9\xa\2\0\4"];} // Who said my code was obscure? http://dales.rmplc.co.uk/Duncan