fsockopen seems very slow

Question

Why is this fsockopen so slow compared to the same request from a browser?

php fsockopen: 0.254 secs

browser: 0.070 secs

fsockopen request

$time = microtime(true);

if($fp = fsockopen('ssl://domain.com', 443, $errno, $errstr, 20)){
    echo "\n".(microtime(true) - $time);
    $this->request = 'POST '.$path.' HTTP/1.1'.$crlf
        .'Host: '.$this->host.$crlf
        .'Content-Type: application/x-www-form-urlencoded'.$crlf
        .'Content-Length: '.$content_length.$crlf
        .'Connection: Close'.$crlf.$crlf
        .$body;
    fwrite($fp, $this->request);

    while($line = fgets($fp)){
        if($line !== false){
            $this->response .= $line;
        }
    }

    fclose($fp);
}

echo "\n".(microtime(true) - $time);

fsockopen results

0.18865990638733
0.25424790382385

request from browser

enter image description here

dns caching? reverse dns lookup time? there's more to a network call than just the time-in-flight on the wire. — Marc B, May 25 '15 at 22:02
you mean in something like `/etc/hosts` or `c:\windows\system32\drivers\etc\hosts` ? — clarkk, May 26 '15 at 16:01
node. that just hardcodes dns mappings, and has nothing to do with the resolver. — Marc B, May 26 '15 at 16:38
How can I then speed up the request? TTL on the DNS is set to 59.. Even if I do quick multiple request after each other each request still takes the same time — clarkk, May 26 '15 at 17:02

score 0 · Answer 1 · edited May 23 '17 at 11:46

0

It could be EOF problem, your fopen wait until timeout.

Try a lower timeout for faster return, but is not an elegant solution.

Other solution is to query connection manually with a bucle, like this example:

while (!feof($conn)) {
    print fgets($conn, 1024);
}

Source of example: https://stackoverflow.com/a/1319434/3518053

edited May 23 '17 at 11:46

Community

1
1

answered May 26 '15 at 22:54

manuelbcd

3,106
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I'm performing tests but I can't reproduce the problem, with some example pages the fopen connection is very fast. May be you could give me an url which can reproduce problem? – manuelbcd May 27 '15 at 10:30

score -1 · Accepted Answer · edited May 23 '17 at 12:09

-1

I found a solution here

if connection is keep alive how to read until end of stream php

edited May 23 '17 at 12:09

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1
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answered May 27 '15 at 23:38

clarkk

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fsockopen seems very slow

fsockopen request

fsockopen results

request from browser

2 Answers2