docs don't specify how to POST an unnamed value (like a SOAP request)

[eflister]

i needed to replicate curl's option for a soap request:

     --data-binary <data> HTTP POST binary data

the server won't accept multipart as with CurlHttpPost. the docs for CurlPostFields (at top of https://hackage.haskell.org/package/curl-1.3.8/docs/Network-Curl-Post.html and https://hackage.haskell.org/package/curl-1.3.8/docs/Network-Curl.html#v:curlPost) indicate it should be a list of name=value Strings, so i was stuck for a long time looking for some other option that didn't involve naming the value. eventually it occurred to me to just try it without a name, which worked.

i also had to use CurlHttpHeaders to set content-type: text/xml;charset='utf-8', why isn't there an explicit constructor for this as in HttpPost or CurlReferer, CurlUserAgent, CurlCookie, etc?

[defanor]

I was briefly stuck on that too; the libcurl naming of that option is somewhat confusing, but the CURLOPT_POSTFIELDS documentation mentions that it's neither converted nor encoded, while that in the bindings sounds rather like it has to be in the "name=value" format.