php-PHP中fread在等待时为什么会再建两次连接？
php
PHP中，我用pfsockopen和服务器建立了一个连接，然后用fwrite对连接进行发送，最后用fread等待服务器返回的数据。
但服务器那边如果没进行数据返回时，fread阻塞在那里，中间过程中服务器那边打印显示会再次accept到一个连接（服务器当前只会有这一个设备对其连接）。
各位大神指导这个为什么吗，求解答呀，困惑好多天了？
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