支持断点续传

[ShixiangWang]

#12

通过 wget curl 系统命令实现

[ShixiangWang]

经过 curl 和 wget 测试，Xena 不支持断点续传 resume from breakpoint

[ShixiangWang]

ucsc说会加入该特性 后面解决

[ShixiangWang]

Reply from UCSC Xena team

Hi Shixiang -- We have deployed a hub that supports byte range requests, here:
http://ec2-34-230-81-173.compute-1.amazonaws.com:7222

It's a mirror of the toil hub. Note that it doesn't support https, so if you try to add it to a Xena session, you will get a mixed content error.

Can you let us know if this works for your use case? If so, we can update the production hubs to support byte ranges.

[ShixiangWang]

It works

[ShixiangWang]

UCSC Xena 已经支持断点续传，后面该包实现它

All of the public hubs should be updated now, to allow byte ranges.

[ShixiangWang]

library(UCSCXenaTools)
xe = XenaGenerate(subset = XenaDatasets == "TcgaTargetGtex_expected_count")
xe
xq = XenaQuery(xe)
# You cannot resume from breakpoint in default mode
XenaDownload(xq, destdir = "~/test/", force = TRUE)
# You can do it with 'curl' command
XenaDownload(xq, destdir = "~/test/", method = "curl", extra = "-C -", force = TRUE)
# You can do it with 'wget' command
XenaDownload(xq, destdir = "~/test/", method = "wget", extra = "-c", force = TRUE)