Subscription failure handling

[penguinpowernz]

OK, made this thing handle subscription failures, even added a test for it 👍 (first time working with GoConvey).

Here's the skinny:

// standard go way
_, err := client.Subscribe("/foo", false, func(message wray.Message) {
  fmt.Println("-------------------------------------------")
  fmt.Println(message.Data)
})

if err != nil {
  fmt.Println("Subscription to /foo failed", err)
}

// USE THE PROMISE, LUKE!
promise, _ = client.Subscribe("/foo/*", false, func(message wray.Message) {
  fmt.Println("-------------------------------------------")
  fmt.Println(message.Data)
})

if !promise.Successful() {
  fmt.Println("Subscription to /foo/* failed", promise.Error())
}

I wasn't sure whether to skip the returning of the error as the second param, but it is a go idiom... so I thought I would leave it there. What say you @pythonandchips ?

[pythonandchips]

Hi @penguinpowernz thanks for the pull request!

I like the returning both the error and the promise nice work as we may have to other errors errors back.

I'll give it a quick test the night and merge it in.

Cheers Again

[irzhywau]

any chance to have this merged?

thanks