当应用程序进入后台时，GCDWebServer崩溃

Question

当我的应用程序进入后台时，我的GCDWebServer (3.3.3)崩溃了：

#3  0x000000010041ea80 in -[GCDWebServer dealloc] at project/Pods/GCDWebServer/GCDWebServer/Core/GCDWebServer.m:221
#4  0x00000001004248b8 in __destroy_helper_block_ ()
#5  0x000000018dd52a28 in _Block_release ()
#6  0x00000001020ad21c in _dispatch_client_callout ()
#7  0x00000001020b2284 in _dispatch_main_queue_callback_4CF ()
#8  0x000000018ee21f2c in __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ ()
#9  0x000000018ee1fb18 in __CFRunLoopRun ()
#10 0x000000018ed4e048 in CFRunLoopRunSpecific ()
#11 0x00000001907d1198 in GSEventRunModal ()
#12 0x0000000194d28628 in -[UIApplication _run] ()
#13 0x0000000194d23360 in UIApplicationMain ()
#14 0x000000010009243c in main at project/main.m:10
#15 0x000000018dd305b8 in start ()
Enqueued from com.apple.main-thread (Thread 1)Queue : com.apple.main-thread (serial)
#0  0x00000001020b8ba4 in _dispatch_queue_push ()
#1  0x0000000100424680 in -[GCDWebServer _stop] at project/Pods/GCDWebServer/GCDWebServer/Core/GCDWebServer.m:734
#2  0x0000000100424a10 in -[GCDWebServer _didEnterBackground:] at project/Pods/GCDWebServer/GCDWebServer/Core/GCDWebServer.m:746

具体的一行是：

GWS_DCHECK(_options == nil);  // The server can never be dealloc'ed while running because of the retain-cycle with the dispatch source

看起来_options字典必须为空(例如，服务器必须停止)，但在此代码路径中，_options似乎从未设置为nil：在- stop中设置为nil，但在- _stop中未设置为nil。

我可能遗漏了一些东西，因为这会被其他人注意到。

Answer 1

我也有同样的问题。我解决了这个问题，将服务器保存在类的静态变量中，而不是保存在函数中。

它不起作用：

    class Server {
        static func initialize() {
            let webServer = GCDWebServer()
            ...
            webServer?.start(withPort: 8081, bonjourName: nil)
        }
    }

它是有效的：

    class Server {
        static let webServer = GCDWebServer()
        static func initialize() {
            ...
            webServer?.start(withPort: 8081, bonjourName: nil)
        }
    }