提示the connection has been completed，但是并没有下载完

这两天在项目中遇到一个问题，在网络比较慢的情况下，下载一个360多M的文件，每次都下载到300M左右就不动了，没有任何回调状态，也没有任何错误提示，从FileDownload最后几排日志这一行可以看出（DownloadTask@59423e4 327026715 365813479）文件的总大小是365813479，下载到327026715的时候就不下载了，log最后的提示好像是已经completed， 但这个时候并没有回调到listener的completed方法，而且调用DownloadTask.isRunning()居然返回的是true。我这边测试基本上每次都必现，搜了一下issue好像没有人遇到和我类似的问题，169和169版本都试过，都会出现这个问题， #857这个问题和我有点类似，但log提示不一样，我刚才直接download了最新的master版本copy到主工程测试还是有这个问题，麻烦看下是什么原因呢，谢谢

FileDownload的日志如下：

01-22 10:49:19.990 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[289379724], consume[33]
01-22 10:49:20.307 5245 5312 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[4] offset[364965240], consume[11]
01-22 10:49:20.501 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:49:20.501 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 269061041 365813479
01-22 10:49:20.501 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:49:21.488 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[24808037], consume[38]
01-22 10:49:21.921 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[212755946], consume[21]
01-22 10:49:22.121 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[289445297], consume[14]
01-22 10:49:22.627 5245 5312 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[4] offset[365261176], consume[17]
01-22 10:49:23.553 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[25121381], consume[10]
01-22 10:49:23.942 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[212930026], consume[15]
01-22 10:49:24.219 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[289609137], consume[11]
01-22 10:49:24.756 5245 5312 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[4] offset[365330808], consume[18]
01-22 10:49:25.615 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[25434725], consume[20]
01-22 10:49:26.233 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[213104106], consume[26]
01-22 10:49:26.248 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[289746353], consume[8]
01-22 10:49:26.869 5245 5312 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[4] offset[365504888], consume[20]
01-22 10:49:27.652 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[25711205], consume[29]
01-22 10:49:28.420 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[289922481], consume[30]
01-22 10:49:28.462 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[213225962], consume[9]
01-22 10:49:28.899 5245 5312 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[4] offset[365731192], consume[28]
01-22 10:49:29.693 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[25991781], consume[20]
01-22 10:49:29.957 5245 5312 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[4] offset[365813479], consume[16]
01-22 10:49:29.957 5245 5312 D FileDownloader.DownloadLaunchRunnable: the connection has been completed(4): [292650780, 0) 365813479
01-22 10:49:30.455 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[290096561], consume[16]
01-22 10:49:30.587 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[213347818], consume[10]
01-22 10:49:30.588 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:49:30.589 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 272684357 365813479
01-22 10:49:30.589 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:49:31.713 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[26320485], consume[39]
01-22 10:49:32.477 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[290322865], consume[28]
01-22 10:49:32.787 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[213556714], consume[12]
01-22 10:49:33.716 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[26601061], consume[11]
01-22 10:49:34.498 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[290618801], consume[37]
01-22 10:49:34.865 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[213748202], consume[11]
01-22 10:49:35.916 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[26827365], consume[33]
01-22 10:49:36.790 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[290810289], consume[25]
01-22 10:49:36.873 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[214096362], consume[12]
01-22 10:49:38.063 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[27105893], consume[32]
01-22 10:49:38.812 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[291106225], consume[11]
01-22 10:49:39.006 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[214305258], consume[17]
01-22 10:49:40.117 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[27243109], consume[33]
01-22 10:49:40.576 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:49:40.576 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 276307269 365813479
01-22 10:49:40.577 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:49:41.040 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[291489201], consume[38]
01-22 10:49:41.352 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[214531562], consume[14]
01-22 10:49:42.124 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[27523685], consume[24]
01-22 10:49:43.109 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[291819953], consume[32]
01-22 10:49:43.361 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[214636010], consume[10]
01-22 10:49:44.143 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[27837029], consume[24]
01-22 10:49:45.138 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[292098481], consume[33]
01-22 10:49:45.494 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[214775274], consume[16]
01-22 10:49:46.203 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[28167781], consume[26]
01-22 10:49:47.149 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[292342193], consume[38]
01-22 10:49:47.537 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[215001578], consume[12]
01-22 10:49:48.385 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[28359269], consume[31]
01-22 10:49:49.023 5245 5311 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[3] offset[292650780], consume[36]
01-22 10:49:49.023 5245 5311 D FileDownloader.DownloadLaunchRunnable: the connection has been completed(3): [219488085, 292650779) 365813479
01-22 10:49:49.552 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[215384554], consume[17]
01-22 10:49:50.493 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[28550757], consume[31]
01-22 10:49:50.574 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:49:50.574 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 279929483 365813479
01-22 10:49:50.575 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:49:51.597 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[215819754], consume[36]
01-22 10:49:52.586 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[28898917], consume[25]
01-22 10:49:53.627 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[216167914], consume[32]
01-22 10:49:54.613 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[29299301], consume[27]
01-22 10:49:55.658 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[216585706], consume[34]
01-22 10:49:56.728 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[29612645], consume[28]
01-22 10:49:57.704 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[217003498], consume[34]
01-22 10:49:58.726 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[29943397], consume[8]
01-22 10:49:59.707 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[217401834], consume[30]
01-22 10:50:00.497 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:50:00.497 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 283551408 365813479
01-22 10:50:00.497 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:50:00.808 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[30308965], consume[35]
01-22 10:50:01.731 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[217717226], consume[27]
01-22 10:50:02.845 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[30744165], consume[36]
01-22 10:50:03.754 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[218030570], consume[20]
01-22 10:50:04.907 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[31127141], consume[37]
01-22 10:50:05.842 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[218465770], consume[34]
01-22 10:50:06.974 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[31440485], consume[47]
01-22 10:50:07.900 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[218831338], consume[32]
01-22 10:50:09.001 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[31910501], consume[10]
01-22 10:50:09.973 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[219144682], consume[29]
01-22 10:50:10.579 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:50:10.579 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 287174320 365813479
01-22 10:50:10.580 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:50:11.159 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[32258661], consume[41]
01-22 10:50:11.690 5245 5310 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[2] offset[219488085], consume[24]
01-22 10:50:11.690 5245 5310 D FileDownloader.DownloadLaunchRunnable: the connection has been completed(2): [146325390, 219488084) 365813479
01-22 10:50:13.256 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[32867941], consume[44]
01-22 10:50:15.264 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[33668709], consume[43]
01-22 10:50:17.315 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[34399845], consume[61]
01-22 10:50:19.306 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[35130981], consume[31]
01-22 10:50:20.578 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:50:20.579 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 290796571 365813479
01-22 10:50:20.579 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:50:21.337 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[35844709], consume[55]
01-22 10:50:23.371 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[36575845], consume[59]
01-22 10:50:25.374 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[37202533], consume[52]
01-22 10:50:27.460 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[38020709], consume[52]
01-22 10:50:29.469 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[38786661], consume[22]
01-22 10:50:30.601 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:50:30.601 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 294421531 365813479
01-22 10:50:30.601 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:50:31.518 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[39517797], consume[67]
01-22 10:50:33.591 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[40214117], consume[48]
01-22 10:50:35.640 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[41014885], consume[48]
01-22 10:50:37.671 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[41711205], consume[45]
01-22 10:50:39.672 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[42442341], consume[30]
01-22 10:50:40.894 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:50:40.894 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 298044443 365813479
01-22 10:50:40.895 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:50:41.774 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[43138661], consume[55]
01-22 10:50:43.799 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[43904613], consume[60]
01-22 10:50:45.790 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[44583525], consume[47]
01-22 10:50:47.878 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[45349477], consume[51]
01-22 10:50:49.890 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[46080613], consume[47]
01-22 10:50:50.840 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:50:50.841 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 301667355 365813479
01-22 10:50:50.841 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:50:51.941 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[46829157], consume[52]
01-22 10:50:53.920 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[47575653], consume[10]
01-22 10:50:55.980 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[48291429], consume[51]
01-22 10:50:58.030 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[49039973], consume[53]
01-22 10:51:00.055 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[49753701], consume[31]
01-22 10:51:00.867 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:51:00.867 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 305290230 365813479
01-22 10:51:00.868 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:51:02.076 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[50484837], consume[49]
01-22 10:51:04.086 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[51146341], consume[15]
01-22 10:51:06.150 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[51927653], consume[60]
01-22 10:51:08.148 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[52626021], consume[50]
01-22 10:51:10.160 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[53357157], consume[34]
01-22 10:51:11.026 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:51:11.026 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 308912155 365813479
01-22 10:51:11.026 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:51:12.196 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[54103653], consume[56]
01-22 10:51:14.177 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[54836837], consume[14]
01-22 10:51:16.260 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[55567973], consume[54]
01-22 10:51:18.292 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[56316517], consume[57]
01-22 10:51:20.314 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[57047653], consume[42]
01-22 10:51:21.013 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:51:21.013 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 312535067 365813479
01-22 10:51:21.014 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:51:22.350 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[57794149], consume[53]
01-22 10:51:24.327 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[58527333], consume[15]
01-22 10:51:26.405 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[59258469], consume[52]
01-22 10:51:28.410 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[59989605], consume[54]
01-22 10:51:30.446 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[60738149], consume[43]
01-22 10:51:30.993 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:51:30.993 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 316157979 365813479
01-22 10:51:30.993 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:51:32.483 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[61469285], consume[54]
01-22 10:51:34.490 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[62217829], consume[18]
01-22 10:51:36.538 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[62964325], consume[50]
01-22 10:51:38.600 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[63680101], consume[68]
01-22 10:51:40.614 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[64428645], consume[49]
01-22 10:51:40.977 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:51:40.977 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 319780891 365813479
01-22 10:51:40.978 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:51:42.634 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[65159781], consume[65]
01-22 10:51:44.592 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[65890917], consume[18]
01-22 10:51:46.644 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[66622053], consume[55]
01-22 10:51:48.697 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[67370597], consume[62]
01-22 10:51:50.689 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[68014693], consume[47]
01-22 10:51:51.069 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:51:51.069 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 323403803 365813479
01-22 10:51:51.069 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:51:52.726 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[68830821], consume[61]
01-22 10:51:54.730 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[69546597], consume[29]
01-22 10:51:56.789 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[70260325], consume[65]
01-22 10:51:58.820 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[71043685], consume[56]
01-22 10:52:00.855 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[71740005], consume[46]
01-22 10:52:01.176 5174 5289 D FileDownloader.MessageSnapshotGate: ~~~callback -1409778838 old[3] new[3] 1
01-22 10:52:01.176 5174 5289 D FileDownloader.FileDownloadMessenger: notify progress -1409778838@com.liulishuo.filedownloader.DownloadTask@59423e4 327026715 365813479
01-22 10:52:01.177 5174 5289 D FileDownloader.MessageSnapshotGate: updateKeepFlow
01-22 10:52:02.889 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[72505957], consume[52]
01-22 10:52:04.618 5245 5308 D FileDownloader.FetchDataTask: require flushAndSync id[-1409778838] index[0] offset[73162695], consume[18]
01-22 10:52:04.618 5245 5308 D FileDownloader.DownloadLaunchRunnable: the connection has been completed(0): [0, 73162694) 365813479