APNS/2

APNS/2 is a go package designed for simple, flexible and fast Apple Push Notifications on iOS, OSX and Safari using the new HTTP/2 Push provider API.

Features

Uses new Apple APNs HTTP/2 connection
Works with older versions of go (1.4.x) not just 1.6
Supports persistent connections to APNs
Fast, modular & easy to use
Tested and working in APNs production environment

Install

go get -u golang.org/x/net/http2 (Support for HTTP/2 until go1.6 is out of beta)
go get -u golang.org/x/crypto/pkcs12

Example

package main

import (
  apns "github.com/sideshow/apns2"
  "github.com/sideshow/apns2/certificate"
  "log"
)

func main() {

  cert, pemErr := certificate.FromPemFile("../cert.pem", "")
  if pemErr != nil {
    log.Println("Cert Error:", pemErr)
  }

  notification := &apns.Notification{}
  notification.DeviceToken = "11aa01229f15f0f0c52029d8cf8cd0aeaf2365fe4cebc4af26cd6d76b7919ef7"
  notification.Topic = "com.sideshow.Apns2"
  notification.Payload = []byte(`{"aps":{"alert":"Hello!"}}`)

  client := apns.NewClient(cert).Development()
  res, err := client.Push(notification)

  if err != nil {
    log.Println("Error:", err)
    return
  }
}

Notification

At a minimum, a Notification needs a Token, a Topic and a Payload.

notification := &Notification{
  Token: "11aa01229f15f0f0c52029d8cf8cd0aeaf2365fe4cebc4af26cd6d76b7919ef7",
  Topic: "com.sideshow.Apns2"
  Payload: []byte(`{"aps":{"alert":"Hello!"}}`),
}

You can also set an optional ApnsID, Expiration or Priority.

notification.ApnsID =  "40636A2C-C093-493E-936A-2A4333C06DEA"
notification.Expiration = time.Now()
notification.Priority = apns.PriorityLow

Response, Error handling

APNS/2 draws the distinction between a valid response from Apple indicating wether or not the Notification was sent or not, and an unrecoverable or unexpected Error;

An Error is returned if a non-recoverable error occurs, i.e. if there is a problem with the underlying http.Client connection or Certificate, the payload was not sent, or a valid Response was not received.
A Response is returned if the payload was successfully sent to Apple and a documented response was received. This struct will contain more information about whether or not the push notification succeeded, its apns-id and if applicable, more information around why it did not succeed.

To check if a Notification was successfully sent;

res, err := client.Push(notification)
if err != nil {
  log.Println("There was an error", err)
  return
}
if res.Sent() {
  log.Println("APNs ID:", res.ApnsID())
}

License

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

nickhesketh / apns2