Refused to set unsafe header Connection

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kcl Author

Level 1

4 points

Refused to set unsafe header Connection

I'm getting this new error while building an online app. Anyone know what this error means?

2.0 Ghz MBP, Mac OS X (10.5.2)

Posted on Apr 16, 2008 1:39 AM

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Answer 1

askpete

Level 1

0 points

Apr 20, 2008 11:40 PM in response to kcl

I'm also getting this message when getting ajax content. Firefox/firebug doesn't report an error. Any ideas anyone?

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Answer 2

kcl Author

Level 1

4 points

Apr 22, 2008 10:12 AM in response to askpete

Not sure if this made the difference, but I was getting an error from the mySQL server (I didn't re-authorize the db user after modifying the stored procedure) in my remote code.

Apparently this (rightly) delivers a malformed header to Safari. It's just couched in language that isn't as clear as it perhaps could be.

I fixed the problem and everything worked as I expected.

That was my solution, your mileage may vary.

Message was edited by: kcl

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Answer 3

phoque

Level 1

0 points

Jun 14, 2008 5:32 AM in response to kcl

What was the header that made Safari cry? 🙂

I'm having the exact same problem trying to write a GreaseKit userscript.

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Answer 4

f1sh

Level 1

5 points

Aug 1, 2008 5:06 AM in response to kcl

Hi All!

If you look real close at the error message you can see that Connection is written with a capital C. So safari means you cant set the header "Connection". This is probably an safety feature or something, i don't know actualy.

So what you can do is look at the code that makes the request an look if it sets the Connection header. If it does you must remove that piece of code.

I discovered this by accident and when i did i remembered that this topic didn't had a solution yet so i decided to post this. I don't know for 100% that it works but for me it does.

Tom

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