> -----Original Message----- > From: Bill Hoffman [mailto:xbhoff@xxxxxxx] > Sent: 19 May 2005 00:46 > To: php-general@xxxxxxxxxxxxx > Subject: Re: libxml_set_streams_context > > > On May 18, 2005, at 4:10 PM, Jared Williams wrote: > > > Sure the server is checking if modified since headers? > > I'm capturing the response headers from the remote server, so > I can see that. > > > Just tried a bit of code here and it seems to be working as > expected > > (5.0.4 Win32) > > 1) I made an initial mistake by running my PHP script(s) from > the command line and not from a server. > 2) but now when running my PHP script(s) from a server I see that: > > file_get_contents() with a conditional get in a stream > context works as expected; that is, the remote server returns > a 304 not modified HTTP response header only. (if doing this > with file_get_contents(), then the > libxml_set_streams_context() function call is of course irrelevant). > > DOMDocument::load() with a conditional get in a stream > context set via libxml_set_streams_context() shows odd > results; that is, the remote server returns a 304 not > modified in the HTTP response header, but also returns the > file contents as well (!!??). > > That's a bit baffling -- a server shouldn't do that, since > the 304 response header ends with "connection: close", so I > don't know how or why the file contents are being captured > too. I would think a 304 response header means that the > request header was properly interpreted and nothing but a > header would be returned. Hard to know if the problem is on > my end or on the remote server side. I note also that stream > contexts send only as HTTP/1.0, and the remote server is > returning HTTP/1.1, and I just don't know if that's a > possible factor in this or not. Warning: DOMDocument::load(http://localhost/test.php) [function.load]: failed to open stream: HTTP request failed! HTTP/1.1 304 Undescribed in C:\Inetpub\evildocs\www\load.php on line 12 <?xml version="1.0"?> <refentry id="function.mcal-next-recurrence"> <refnamediv> <refname>mcal_next_recurrence</refname> <refpurpose>Returns the next recurrence of the event</refpurpose> Heh, yes indeed most baffling... Libxml must be performing some sort of cacheing, I guess. Doesn't appear to be requesting twice (once with the if-modified-since header, and again without atleast) > > Anyhow, I have a workable solution which is sort of ok -- use > file_get_contents() with a conditional get in a stream > context to fetch a remote file on an "if-modified-since" > basis, then stuff the string result into a new DOMDocument() > object and have at it that way. > > But of course I'm puzzled as to why > libxml_set_streams_context() is doing what it's doing, and it > would be nice to know how to get it to work if it can and > should work elsewhere for others. > > Thanks for a helpful reply. > > -- > PHP General Mailing List (http://www.php.net/) To > unsubscribe, visit: http://www.php.net/unsub.php > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
