www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.learn - std.net.curl - how to set custom Content-Type?

reply Dmitry Olshansky <dmitry.olsh gmail.com> writes:
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
Sep 17 2012
next sibling parent reply Johannes Pfau <nospam example.com> writes:
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
Sep 17 2012
parent reply "Jonathan M Davis" <jmdavisProg gmx.com> writes:
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
Sep 17 2012
parent Dmitry Olshansky <dmitry.olsh gmail.com> writes:
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.

Still I believe it worths an enhancement request. Setting content type is a basic task. -- Dmitry Olshansky
Sep 18 2012
prev sibling parent Johannes Pfau <nospam example.com> writes:
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.
Sep 18 2012