remake Host: for each connection and it'll work with proxies too

    http->sendit = Curl_getFormData(data->httppost, &http->postsize);

  }

  if(!checkheaders(data, "Host:") &&

     !conn->allocptr.host) {

    /* if ptr_host is already set, it is OK since we only re-use connections

       to the very same host and port */

  if(!checkheaders(data, "Host:")) {

    /* if ptr_host is already set, it is almost OK since we only re-use

       connections to the very same host and port, but when we use a HTTP

       proxy we have a persistant connect and yet we must change the Host:

       header! */

    if(conn->allocptr.host)

      free(conn->allocptr.host);

    if(((conn->protocol&PROT_HTTPS) && (conn->remote_port == PORT_HTTPS)) ||

       (!(conn->protocol&PROT_HTTPS) && (conn->remote_port == PORT_HTTP)) )