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When cURL is used with CURLOPT_SSL_VERIFYPEER set to TRUE or even without setting it (= default value is TRUE) there is a memory leakage with every call causing memory usage of php process to be constantly increasing.
memory_get_usage() reports still the same value so it must be core problem.
Keep test script running for more than 1 hour to see difference in memory usage (e.g. with top/htop etc.)
After running this script for 24 hours I got 50% of system memory to be used (cca 2GB)!
$url = "https://www.yahoo.com/";
echo("Fetching $url ... \n");
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_NOBODY, TRUE);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, TRUE);
No memory leakage even when script is running forever.
Memory usage is constantly increasing in time.
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One month after I created this bug and no feedback? Will somebody look at it?
Tried this with the 7.2.8 and 7.1.20 I have on hand, and with repeated calls but not for a full hour (let alone 24). No leaks.
If you var_dump(memory_get_usage()) do you see an increase after a few requests, or does it actually take on the scale of an hour to see it? What does valgrind have to say?
Sorry for the late answer I didn't get any email notification about your replay.
I tried it again with the latest version 7.2.9 compiled with only necessary options. After one hour the memory_get_usage() reports still the same number but consumed virtual memory increased from 290MB to 420MB. Couldn't be problem with leakage in openssl or curl library? I'm using openssl-1.0.2k-8 and curl-7.29.0-42.
Here are screenshots with running process and htop showing memory usage:
https://imgur.com/upfRDl0 - after start
https://imgur.com/kpCUsbV - after 1 hour
Will anybody reply me?
Cannot reproduce either with a current libcurl.
Might have been an upstream or SSL library issue.