问题
any idea why fopen would timeout for a file if it is on my server and I know the url is correct?
update: sorry, i should have mentioned this is in php. the code is:
fopen($url, 'r');
It works if i put in a relative path for the file, but not if $url is a url in my server (but it works for google.com). Thanks for the help.
Alaitnik's answer was right. The problem only appears when i access my own server files through the ethernet interface. How can I fix this? I need to be able to access the file from the ethernet interface because the url loads dynamically (it's generated from a wordpress cms, so the url doesn't technically exist as a file on my server)
回答1:
you can use ini_set('default_socket_timeout',2); before opening the fopen $url . This actually set the default socket connection timout without responding. Stream_set_timeout sets time out on the stream that is established via fopn or socket opening functions. Try this may be helpful for you.
回答2:
It appears that you're trying to download a file from your own server using the HTTP protocol from a program running on that same server?
If so, the timeout problem is likely to be web server or network configuration related. Timeouts normally only happen because either:
- the server really is taking a long time to send back the answer, or
- the TCP connection is being blocked
For example, it may be that your local firewall rules only permit access to www.example.com if those queries come from the ethernet interface, but a locally made connection would try to go via the loopback interface.
回答3:
maybe your "allow_url_fopen" is set to "Off" check your php.ini file or phpinfo()
回答4:
If you are trying to get the HTML of a URL, I suggest using curl instead of fopen.
fopen is best used with local files, coz it does not "know" how to deal with the idiosyncrasies of a network resource.
回答5:
Check the comments on the documentation of fopen. There's a whole lot of gold in there.
回答6:
Took me ages to solve this, but here I found it, thanks to Alnitak. Opening the file with localhost in the URL instead of the hostname was what did the trick for me.
来源：https://stackoverflow.com/questions/881816/php-fopen-function-timed-out