长链接启动不了，端口、代理已配置

[root@VM-12-10-centos crmeb]# sudo -u www php think workerman start --d

PHP Warning:  PHP Startup: Unable to load dynamic library '/www/server/php/71/lib/php/extensions/no-debug-non-zts-20160303/php_gd2.dll' - /www/server/php/71/lib/php/extensions/no-debug-non-zts-20160303/php_gd2.dll: cannot open shared object file: No such file or directory in Unknown on line 0

string(5) "admin"

string(4) "chat"

string(7) "channel"

Workerman[think] start in DAEMON mode

[root@VM-12-10-centos crmeb]# stream_socket_server(): unable to connect to tcp://0.0.0.0:20002 (Address already in use) in file /www/wwwroot/zhili-bangshop.cn/crmeb/vendor/workerman/workerman/Worker.php on line 2214

Address already in use