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Download file with multiple simultaneous connections

Terminal - Download file with multiple simultaneous connections
aria2c -s 4 http://my/url
2009-08-11 22:34:00
User: jrk
Download file with multiple simultaneous connections

`aria2c` (from the aria2 project) allows. Change -s 4 to an arbitrary number of segments to control the number of concurrent connections. It is also possible to provide multiple URLs to the same content (potentially over multiple protocols) to download the file concurrently from multiple hosts.


There are 3 alternatives - vote for the best!

Terminal - Alternatives
aria2c -x 4 http://my/url
2014-07-26 03:06:33
User: lx45803

jrk's aria2 example is incorrect. -s specifies the global connection limit; the per-host connection limit is specified with -x.

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What others think

isn't this considered rather bad netiquette?

Comment by thebillywayne 363 weeks ago

You may encounter the certificate verification error with HTTPS server.

Comment by hemanth 363 weeks ago

It was just as bad when "puf" did it, 5+ years ago :-)

Comment by eichin 362 weeks and 6 days ago

firefox extension downthemall does this - why is it considered bad?

Comment by stuntkiwi 308 weeks ago

It is recommended to keep number of simultaneous connections to a maximum of 2 per host, as per RFC2616. As to why more is bad: you might hose the available resources of the host, and this could be bad for high-traffic hosts. Some programs like DownThemAll have default settings that take this for granted. I always set the number of simultaneous connections to 1 per host when installing DownThemAll.

Apart from above sideline notes, this command is how you download with simultaneous connections. If you want to spread across mirrors, just add the mirror URLs. E.g.:

aria2c -s 4 http://my/url http://my_mirror1/url http://my_mirror2/url ...
Comment by syockit 268 weeks and 2 days ago

Your point of view

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