{"action":"created","issue":{"url":"https://api.github.com/repos/tatsuhiro-t/aria2/issues/370","labels_url":"https://api.github.com/repos/tatsuhiro-t/aria2/issues/370/labels{/name}","comments_url":"https://api.github.com/repos/tatsuhiro-t/aria2/issues/370/comments","events_url":"https://api.github.com/repos/tatsuhiro-t/aria2/issues/370/events","html_url":"https://github.com/tatsuhiro-t/aria2/issues/370","id":72341023,"number":370,"title":"When using like this: `-Vtrue --checksum=md5=96528defee417b3cf0d400eeb26d7df8', does the -Vtrue need or not for this case?","user":{"login":"hongyi-zhao","id":11155854,"avatar_url":"https://avatars.githubusercontent.com/u/11155854?v=3","gravatar_id":"","url":"https://api.github.com/users/hongyi-zhao","html_url":"https://github.com/hongyi-zhao","followers_url":"https://api.github.com/users/hongyi-zhao/followers","following_url":"https://api.github.com/users/hongyi-zhao/following{/other_user}","gists_url":"https://api.github.com/users/hongyi-zhao/gists{/gist_id}","starred_url":"https://api.github.com/users/hongyi-zhao/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hongyi-zhao/subscriptions","organizations_url":"https://api.github.com/users/hongyi-zhao/orgs","repos_url":"https://api.github.com/users/hongyi-zhao/repos","events_url":"https://api.github.com/users/hongyi-zhao/events{/privacy}","received_events_url":"https://api.github.com/users/hongyi-zhao/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":12,"created_at":"2015-05-01T03:10:00Z","updated_at":"2015-05-05T00:58:51Z","closed_at":null,"body":"Dear Tatsuhiro,\r\n \r\nFirstly, thanks a lot for your powerful tool aria2c though I only know it sereral day ago.\r\n\r\nNow, I have the following question when using the arguments of  `-Vtrue' and `--checksum' at the same time for http/https/ftp uris.\r\n\r\nSee the following example used by me for now to obtain some Debian's packages:\r\n\r\naria2c -c -x1 -s40 -k1M -j40 \\\r\n--async-dns-server=8.8.8.8,8.8.4.4 \\\r\n--lowest-speed-limit=512K --dir=aaa/bbb \\\r\n-Vtrue --checksum=md5=96528defee417b3cf0d400eeb26d7df8 \\\r\n--auto-save-interval=10 --file-allocation=falloc  \\\r\n`paste -sd' ' mDMCTodayHttp.list  `\r\n\r\nIn the above example, the content of file mDMCTodayHttp.list are a lot of uri of Debian's packages using the http/https/ftp protocols.\r\n\r\nMy question is as follows:\r\n\r\nAccording to the manual of aria2c, I can find the following descriptions:\r\n\r\n       --realtime-chunk-checksum[=true|false]\r\n              Validate chunk of data by calculating checksum while downloading\r\n              a file if chunk checksums are provided.  Default: true\r\n\r\nSo, considering that for my above example, I also used the  --checksum argument as follows:\r\n \r\n--checksum=md5=96528defee417b3cf0d400eeb26d7df8\r\n\r\nDoes this mean the file's checksum checking will be doing while  downloading?\r\n\r\nIf so, the should I use the `-Vtrue' argument or not for my case?  I mean, if the `-Vtrue' is a redunant argument for my above usages and should be omitted from the arguments list of aria2c for my case?\r\n\r\nRegards.\r\nH.Zhao\r\n"},"comment":{"url":"https://api.github.com/repos/tatsuhiro-t/aria2/issues/comments/98895844","html_url":"https://github.com/tatsuhiro-t/aria2/issues/370#issuecomment-98895844","issue_url":"https://api.github.com/repos/tatsuhiro-t/aria2/issues/370","id":98895844,"user":{"login":"tatsuhiro-t","id":404610,"avatar_url":"https://avatars.githubusercontent.com/u/404610?v=3","gravatar_id":"","url":"https://api.github.com/users/tatsuhiro-t","html_url":"https://github.com/tatsuhiro-t","followers_url":"https://api.github.com/users/tatsuhiro-t/followers","following_url":"https://api.github.com/users/tatsuhiro-t/following{/other_user}","gists_url":"https://api.github.com/users/tatsuhiro-t/gists{/gist_id}","starred_url":"https://api.github.com/users/tatsuhiro-t/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tatsuhiro-t/subscriptions","organizations_url":"https://api.github.com/users/tatsuhiro-t/orgs","repos_url":"https://api.github.com/users/tatsuhiro-t/repos","events_url":"https://api.github.com/users/tatsuhiro-t/events{/privacy}","received_events_url":"https://api.github.com/users/tatsuhiro-t/received_events","type":"User","site_admin":false},"created_at":"2015-05-05T00:58:51Z","updated_at":"2015-05-05T00:58:51Z","body":"May be or may be not.\n1M is small enough these days, and splitting into smaller pieces is not necessarily faster; it is even slower due to several reasons, e.g., connection setup cost, and tcp slow start, etc."}}