uuid.NewV4() returns two values

[plasticlife-art]

so compiler returns error

[awonak]

I would suggest raising the error in the event that err is not nil. If u is nil, it's better to catch it here with a helpful error message.

if uuid, err := uuid.NewV4(); err != nil {
	return fmt.Errorf("Error generating new UUID: %s", err), nil
} else {
	client.sessionID = uuid.String()
}

[awonak]

The breaking change in go.uuid was introduced here: satori/go.uuid#18