Added a comment: User-Agent

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ewen 2018-07-15 02:21:48 +00:00 committed by admin
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[[!comment format=mdwn
username="ewen"
avatar="http://cdn.libravatar.org/avatar/605b2981cb52b4af268455dee7a4f64e"
subject="User-Agent"
date="2018-07-15T02:21:47Z"
content="""
In theory `User-Agent:` is \"optional\", but [clients `SHOULD` send it](https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.43). Looks like some servers are particularly fussy about it being sent... and off the top of my head I can't think of a reason *not* to send a `User-Agent:` header of some sort, as it is *very* widely sent.
Ewen
"""]]