HTTP error fetching HTTP headers (PHP) using Java Web…

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When using PHP to call the Java WebServices interface, the customer has an abnormal error of “HTTP error fetching HTTP headers” from time to time. After the following troubleshooting process, it is finally determined that it is a DNS resolution problem. At present, it has been temporarily solved by using IP method

The troubleshooting process includes: application log viewing, firewall log tracking, etc

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