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September 17, 2012
std.net.curl - how to set custom Content-Type?
Recently was playing around with std.net.curl high-level API.

One thing that is a blocker for me is (quoting the docs):

@property void postData(const(char)[] data);
Specifying data to post when not using the onSend callback.
...
Content-Type will default to text/plain. Data is not converted or 
encoded by this method.

Yeah, there are only 2 occurrences of Content-Type throughout the docs 
the second "defaults" to Content-Type application/octet-stream.

Say I want to send text/xml. Adding Content-Type as header via
addRequestHeader doesn't seem to change a thing (probably because it 
already has the default one).



-- 
Dmitry Olshansky
September 17, 2012
Re: std.net.curl - how to set custom Content-Type?
Am Mon, 17 Sep 2012 22:33:28 +0400
schrieb Dmitry Olshansky <dmitry.olsh@gmail.com>:

> Recently was playing around with std.net.curl high-level API.
> 
> One thing that is a blocker for me is (quoting the docs):
> 
> @property void postData(const(char)[] data);
> Specifying data to post when not using the onSend callback.
> ...
> Content-Type will default to text/plain. Data is not converted or 
> encoded by this method.
> 
> Yeah, there are only 2 occurrences of Content-Type throughout the
> docs the second "defaults" to Content-Type application/octet-stream.
> 
> Say I want to send text/xml. Adding Content-Type as header via
> addRequestHeader doesn't seem to change a thing (probably because it 
> already has the default one).
> 
> 
> 

addRequestHeader is quite dumb. It simply appends the header to a list.
So by just calling it again you would actually send 2 Content-Type
headers.

Here's a short workaround: http://dpaste.dzfl.pl/4704965b
September 17, 2012
Re: std.net.curl - how to set custom Content-Type?
On Monday, September 17, 2012 20:59:05 Johannes Pfau wrote:
> addRequestHeader is quite dumb. It simply appends the header to a list.
> So by just calling it again you would actually send 2 Content-Type
> headers.

So, you're suggesting to send 2 content headers? That can't be good. It might 
work, but I'm pretty darn sure that it's against the HTTP spec to do so. 
You're only supposed to have duplicate headers when they're values are a list, 
and they can be concatenated into a single header.

- Jonathan M Davis
September 18, 2012
Re: std.net.curl - how to set custom Content-Type?
Am Mon, 17 Sep 2012 22:35:39 +0200
schrieb "Jonathan M Davis" <jmdavisProg@gmx.com>:

> On Monday, September 17, 2012 20:59:05 Johannes Pfau wrote:
> > addRequestHeader is quite dumb. It simply appends the header to a
> > list. So by just calling it again you would actually send 2
> > Content-Type headers.
> 
> So, you're suggesting to send 2 content headers? That can't be good.
> It might work, but I'm pretty darn sure that it's against the HTTP
> spec to do so. You're only supposed to have duplicate headers when
> they're values are a list, and they can be concatenated into a single
> header.
> 
> - Jonathan M Davis

No I'm not suggesting it, but that is what's being done if you call
addRequestHeader twice. Dmitry said addRequestHeader didn't work for
him and I wanted to explain that calling addRequestHeader again does
not overwrite the first value.
September 18, 2012
Re: std.net.curl - how to set custom Content-Type?
On 18-Sep-12 11:41, Johannes Pfau wrote:
> Am Mon, 17 Sep 2012 22:35:39 +0200
> schrieb "Jonathan M Davis" <jmdavisProg@gmx.com>:
>
>> On Monday, September 17, 2012 20:59:05 Johannes Pfau wrote:
>>> addRequestHeader is quite dumb. It simply appends the header to a
>>> list. So by just calling it again you would actually send 2
>>> Content-Type headers.
>>
>> So, you're suggesting to send 2 content headers? That can't be good.
>> It might work, but I'm pretty darn sure that it's against the HTTP
>> spec to do so. You're only supposed to have duplicate headers when
>> they're values are a list, and they can be concatenated into a single
>> header.
>>
>> - Jonathan M Davis
>
> No I'm not suggesting it, but that is what's being done if you call
> addRequestHeader twice. Dmitry said addRequestHeader didn't work for
> him and I wanted to explain that calling addRequestHeader again does
> not overwrite the first value.
>
Yeah, that's the case. Thanks Johannes, I'll use your workaround for now.

Still I believe it worths an enhancement request. Setting content type 
is a basic task.

-- 
Dmitry Olshansky
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