add DaemonCommand for daemon players

adjust http_header available

src/ZM/Command/DaemonCommand.php

@@ -0,0 +1,31 @@
+<?php
+
+
+namespace ZM\Command;
+
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use ZM\Utils\DataProvider;
+
+abstract class DaemonCommand extends Command
+{
+    protected $daemon_file = null;
+
+    protected function execute(InputInterface $input, OutputInterface $output) {
+        $pid_path = DataProvider::getWorkingDir() . "/.daemon_pid";
+        if (!file_exists($pid_path)) {
+            $output->writeln("<comment>没有检测到正在运行的守护进程！</comment>");
+            die();
+        }
+        $file = json_decode(file_get_contents($pid_path), true);
+        if ($file === null || posix_getsid(intval($file["pid"])) === false) {
+            $output->writeln("<comment>未检测到正在运行的守护进程！</comment>");
+            unlink($pid_path);
+            die();
+        }
+        $this->daemon_file = $file;
+        return Command::SUCCESS;
+    }
+}