blob_appendf(&reqUri, "/chat-backup?msgid=%d", msgid);
    if( g.url.user && g.url.user[0] ){
      zObs = obscure(g.url.user);
      blob_appendf(&reqUri, "&resid=%t", zObs);
      fossil_free(zObs);
    }
    zPw = g.url.passwd;
    if( zPw==0 && isDefaultUrl ){
      zPw = unobscure(db_get("last-sync-pw", 0));
      if( zPw==0 ){
        /* Can happen if "remember password" is not used. */
        g.url.flags |= URL_PROMPT_PW;
        url_prompt_for_password();
        zPw = g.url.passwd;
      }
    }
    if( zPw && zPw[0] ){
      zObs = obscure(zPw);
      blob_appendf(&reqUri, "&token=%t", zObs);
      fossil_free(zObs);
    }
    g.url.path = blob_str(&reqUri);
    if( bDebug ){