java.util.ConcurrentModificationException

[congwiny]

java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextNode(HashMap.java:1453)
at java.util.HashMap$EntryIterator.next(HashMap.java:1487)
at java.util.HashMap$EntryIterator.next(HashMap.java:1485)
at cq.llsfdl.cc.a(ConnectTask.java:130)
at cq.llsfdl.cc.a(ConnectTask.java:86)
at cq.llsfdl.cf.g(DownloadLaunchRunnable.java:393)
at cq.llsfdl.cf.run(DownloadLaunchRunnable.java:255)
at java.util.concurrent.ThreadPoolExecutor.processTask(ThreadPoolExecutor.java:1187)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:929)

崩溃出现在130行，迭代entries时出了问题。
应该是多个线程对 FileDownloadHeader#mHeaderMap进行了操作导致的。