Problem with PHP curl calling local URL 499 under Windows

There are 2 sets of local environments
Mall
Discount Coupon

The mall needs to internally invoke the coupon's interface, we use the curl call, when the test environment is deployed locally, we find that the system is stuck.
View Nginx Log

Find a half a day to find the call to other machines normal, is not local.

The last discovery is that PHP's fastcgi concurrency is blocked, and threads can be used under Linux, but fastcgi is not supported under Windows.

Handling: Manual start of 2 fastcgi
127.0.0.1:9000
127.0.0.1:9001

@echo offset batDir=D:/web/phpStudy/php/php-5.6.27-nts/start "fcgi服务" /MIN  /D "%batDir%"  php-cgi.exe -b 127.0.0.1:9001 -c "%batDir%/php.ini"

Nginx configuration file

Problem with PHP curl calling local URL 499 under Windows