curl-library
Re: Order of appearance of header settings
Date: Tue, 11 Oct 2005 10:41:43 +0200 (CEST)
On Tue, 11 Oct 2005, Roberto Nibali wrote:
> Which is not at all the order I submitted my headers. What's the reason for
> this behaviour? What am I doing wrong or what did I forget to read?
The reasons for the order you see is really two-fold:
1) According to the HTTP specs, the order of the headers are not important so
you should not suffer from any problems because in what order libcurl would
send them in.
2) The ordering is quite simply sent in the order of the code flow. libcurl
creates its set of header in a fixed order, and if you replace a built-in
header it will use your replaced content instead of the original content
but in the same spot in the header. When it has added all the internal
headers (replaced or not) it adds the added headers that didn't replace any
internal ones.
Those reasons aside, libcurl doesn't keep track of what order you set most
libcurl options in, so if you set for example CURLOPT_ENCODING and
CURLOPT_REFERER, it will always send those headers in the same fixed order
with no regard in what order you set them in.
Are you suffering from any problems due to this or are you just curious?
-- Commercial curl and libcurl Technical Support: http://haxx.se/curl.htmlReceived on 2005-10-11