I'm using [vert.x](http://vertx.io/) to write an application. It doesn't have built-in cookie support yet, and we have to use "putHeader()" method to manually set cookies.

Now I want to set several cookies, so I write:

```
 req.response.putHeader("Set-Cookie", "aaa=111; path=/")
 req.response.putHeader("Set-Cookie", "bbb=222; path=/")
 req.response.putHeader("Set-Cookie", "ccc=333; path=/")

```

But I found vert.x send only one "Set-Cookie":

```
 Set-Cookie ccc=333; path=/

```

I'm not sure if I misunderstand something. Can server send multi "Set-Cookie" commands one time? Is it correct to send multi cookies this way?