php socket服务端能不能在网页端开启?而不是只好用CLI模式开启
php socket服务端能不能在网页端开启?而不是只能用CLI模式开启
最近在做基于php socket的聊天程序,但是遇到了个问题:
开启ws端口只能在CMD下用php server.php的方式来开启端口,并不能关闭该CMD命令行窗口,一旦关闭就断开了socket连接。
请问,能不能做到不用这样的方式来开启ws服务端,而成为在网页端来开启?怎么做?
------解决方案--------------------
可以从网站上开启,但需要注意以下问题:
1、因为端口不能重复打开,所以你必须保证 server.php 只会被运行一次
2、web 方式下的 php 是超时设置有效的,当然你需要设置成永不超时
3、web 服务器是有超时限制的,虽然时间比较长。应用程序长时间无数据输出,将会被挂起或中断
4、如果 server.php 间歇的做标准输出的话,可以解决 3 的问题。但会引发下一个问题
5、php 在向标准输出写的时候,会检查到请求源的连接是否畅通。如果请求源被关闭了,就会终止程序的运行
当然也提供有阻止这一默认行为的方法
其实命令窗口的存在并不是什么坏事,至少他可以表示 ws 服务器正在工作
另外 ws 服务器在运行时,你应该要把重要的日志信息打印在窗口中,以便实时监视运行情况

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