/* * call-seq: * easy.on_header { |header_data| ... } => <old handler> * * Assign or remove the +on_header+ handler for this Curl::Easy instance. * To remove a previously-supplied handler, call this method with no * attached block. * * The +on_header+ handler is called for each chunk of response header passed * back by libcurl during +perform+. The semantics are the same as for the * block supplied to +on_body+. */ static VALUE ruby_curl_easy_on_header_set(int argc, VALUE *argv, VALUE self) {