Fsockopen download files

This is most likely due to a problem initializing the socket. The connection timeout, in seconds. If the call fails, it will return false. Example 1 fsockopen Example. Example 2 Using UDP connection. The example below shows how to retrieve the day and time from the UDP service "daytime" port 13 in your own machine.

Note : Depending on the environment, the Unix domain or the optional connect timeout may not be available. UDP sockets will sometimes appear to have opened without an error, even if the remote host is unreachable.

The reason for this is because UDP is a "connectionless" protocol, which means that the operating system does not try to establish a link for the socket until it actually needs to send or receive data.

Note : When specifying a numerical IPv6 address e. Submit a Pull Request Report a Bug. Return Values fsockopen returns a file pointer which may be used together with the other file functions such as fgets , fgetss , fwrite , fclose , and feof.

Changelog Version Description 8. Notes Note : Depending on the environment, the Unix domain or the optional connect timeout may not be available. Warning UDP sockets will sometimes appear to have opened without an error, even if the remote host is unreachable. This script checks specific ports so you need to have the correct port open on the server for this to work.

Also, using cURL tended to be faster than fsockopen , though only slightly. Fgets reads to the end of a line, and with binary data this may corrupt your download. I don't think this is very useful to you, however, a better encoding that the webserver might support is the gzip encoding.

This would allow the webserver to compress the response on the fly. If you use a library like CURL, it will tell the server it supports gzip, and then automatically decompress it for you. Like this:. And the final result in case it helps anyone else. I also wrapped the whole thing in a retry loop to decrease the risk of a completely failed download, but it does increase the use of resources:. How are we doing? Please help us improve Stack Overflow.

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Collectives on Stack Overflow. Learn more. Asked 11 years, 9 months ago. Active 10 years, 11 months ago. Viewed 5k times. This is a tad overboard but way cool nevertheless! Concatenated with the network and host addresses from the internet communication layer, this forms a socket. A pair of sockets uniquely identifies each connection. That is, a socket may be simultaneously used in multiple connections. The binding of ports to processes is handled independently by each Host.

However, it proves useful to attach frequently used processes e. These services can then be accessed through the known addresses. Establishing and learning the port addresses of other processes may involve more dynamic mechanisms. The reliability and flow control mechanisms described above require that TCPs initialize and maintain certain status information for each data stream.

Asked 10 years, 6 months ago. Active 10 years, 6 months ago. Viewed 2k times. Hedley Phillips. Hedley Phillips Hedley Phillips 1 1 gold badge 8 8 silver badges 16 16 bronze badges.

Why don't you use curl to get these url? And be aware that fetching these urls on server side will not speed up "user experience" since it won't affect browser's cache — soju. Hi, it isn't the browser cache we are trying to create.

Woudl you mind giving me more info on the Curl method for this? You already use curl to get sitemap, you just have to adapt this code to get urls you want.