Add adjustable timeout setting

[mrjfox]

When trying to download a very large multipart file i would like to be able to adjust the timeout setting on the socket from the current default 5min.

eg: --socket-timeout=30s

SOCKET_TIMEOUT = 5 * 60 # in sec(s) (timeout if we don't receive any recv() callback)

[chouhanyang]

Maybe I'm not sure what you mean, but SOCKET_TIMEOUT is for socket which doesn't receive any data for a while. Not for your case which large files are downloaded. Am I missing something here?

[navinpai]

@mrjfox Any update on the info requested?