-- demo\rosetta\SOAP.exw
include builtins\libcurl.e
include builtins\xml.e      -- xml_encode()

function write_callback(atom pData, integer size, integer nmemb, atom /*pUserdata*/)
integer bytes_written = size*nmemb
    puts(1,peek({pData,bytes_written}))
    return bytes_written
end function
constant write_cb = call_back({'+',routine_id("write_callback")})

function compose_soap_frobnicate(string foo, bar, baz)
  return sprintf("""
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
 <soap:Body>
  <frobnicate xmlns="http://example.com/frobnicate">
   <foo>%s</foo>
   <bar>%s</bar>
   <baz>%s</baz>
  </frobnicate>
 </soap:Body>
</soap:Envelope>""",{xml_encode(foo),xml_encode(bar),xml_encode(baz)})
end function

curl_global_init()
atom curl = curl_easy_init()
curl_easy_setopt(curl, CURLOPT_URL, "https://ameriwether.com/cgi-bin/info.pl")
string soap = compose_soap_frobnicate("'Ein'", ">Zwei<", "\"Drei\"")
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, soap)
curl_easy_setopt(curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC)
curl_easy_setopt(curl, CURLOPT_USERNAME, "user")
curl_easy_setopt(curl, CURLOPT_PASSWORD, "password")
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_cb)
atom headers = NULL
headers = curl_slist_append(headers, "Content-Type: text/xml; charset=utf-8")
headers = curl_slist_append(headers, "SOAPAction: \"https://ameriwether.com/cgi-bin/info.pl/frobnicate\"")
headers = curl_slist_append(headers, "Accept: text/plain") -- Example output easier to read as plain text.
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers)
-- Make the example URL work even if your CA bundle is missing.
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, false)
CURLcode res = curl_easy_perform(curl)
if res!=CURLE_OK then
    printf(2, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res))
end if
curl_slist_free_all(headers)
curl_easy_cleanup(curl)
curl_global_cleanup()