Question

我正在尝试向不同的主机打开套接字，因为我在非阻塞模式下使用SocketChannel：

ListIterator iter = hosts.listIterator();
SocketChannel sChannel = null;
while (iter.hasNext()) 
{
    Host host = iter.next();
    sChannel = SocketChannel.open();
    sChannel.configureBlocking(false);
    sChannel.connect(new InetSocketAddress(host, 80));
}

以后我为所有人打电话finishConnect()。

问题是connect()似乎阻塞了。

Answer 1

我看到了相同的行为（在android上）。无论是否通过...

实例化InetSocketAddress，似乎都会出现这种情况

new InetSocketAddress（String host，int port）
new InetSocketAddress（InetAddress.getByAddress（byte [] ipAddress））
new InetSocketAddress（InetAddress.getByAddress（String host，byte [] ipAddress））

我看到的堆栈如下......

InetAddress.gethostbyaddr(byte[]) line: not available [native method]   
InetAddress.getHostByAddrImpl(byte[]) line: 558 
Inet4Address(InetAddress).getHostName() line: 352   
SocketChannelImpl.connect(SocketAddress) line: 259  
ScannerTargetAuxillaryTest.runBusinessUseCase(InetSocketAddress[]) line: 38 
ScannerTargetAuxillaryTest.testVersion2() line: 125 
ScannerTargetAuxillaryTest.main() line: 247 
TestActivity.onCreate(Bundle) line: 46  
Instrumentation.callActivityOnCreate(Activity, Bundle) line: 1047   
ActivityThread.performLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2466  
ActivityThread.handleLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2519   
ActivityThread.access$2200(ActivityThread, ActivityThread$ActivityRecord, Intent) line: 123 
ActivityThread$H.handleMessage(Message) line: 1870  
ActivityThread$H(Handler).dispatchMessage(Message) line: 99 
Looper.loop() line: 123 
ActivityThread.main(String[]) line: 4370    
Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]  
Method.invoke(Object, Object...) line: 521  
ZygoteInit$MethodAndArgsCaller.run() line: 868  
ZygoteInit.main(String[]) line: 626 
NativeStart.main(String[]) line: not available [native method]

为什么在SocketChannel中连接不在非阻塞模式下运行？

1 个答案: