CodeIgniter: duvida de error no capitulo 6 do livro no envio de email e file upload

code-igniter

#1

Fiz o capitulo 6 do livro CodeIgniter, fui testar e deu esses erros
Severity: Warning

Message: fsockopen(): unable to connect to http://localhost/exemplos_livro_ci/cap1/:25 (Unable to find the socket transport “http” - did you forget to enable it when you configured PHP?)

Filename: libraries/Email.php

Line Number: 2016

Backtrace:

File: C:\wamp64\www\exemplos_livro_ci\cap1\application\controllers\Contato.php
Line: 95
Function: send

File: C:\wamp64\www\exemplos_livro_ci\cap1\application\controllers\Contato.php
Line: 25
Function: SendEmailToAdmin

File: C:\wamp64\www\exemplos_livro_ci\cap1\index.php
Line: 308
Function: require_once