Can I Inject A Content-length Header Into Chrome?

I'm trying to make my first Chrome Extension and it has been quite a learning experience. I'm almost done, but this last piece is killing me. I know Google doesn't want you to use

Solution 1:

Ok, so I posted that at 3:00 AM. After getting some much needed sleep, I woke up this morning and talked to a friend about it. He pointed out that the mistake was actually in my ajax call. I fixed that and now I can send Content-Length from my extension. The above code does work.

A few notes for the code I posted above for anybody searching for this later:

• I'm using underscore to loop through the arrays
• This strips all other headers and only adds the headers starting with "rh-". You may or may not want that.
• You have to have ["requestHeaders", "blocking"] as your last argument in onBeforeSendHeaders.addListener()
• In your manifest.json permissions make sure you have "webRequest" and "webRequestBlocking"

Although not tested, this should work on other headers that Chrome says it won't pass. Here is a list of the headers Google says it doesn't provide in onBeforeSendHeaders (as documented here):

• Authorization
• Cache-Control
• Connection
• Content-Length
• Host
• If-Modified-Since
• If-None-Match
• If-Range
• Partial-Data
• Pragma
• Proxy-Authorization
• Proxy-Connection
• Transfer-Encoding

Hope this helps.