Simple Cloud Notifier
Introduction
With this API you can send push notifications to your phone.
To receive them you will need to install the SimpleCloudNotifier app from the play store.
When you open the app you can click on the account tab to see you unique user_id
and user_key
.
These two values are used to identify and authenticate your device so that send messages can be routed to your phone.
You can at any time generate a new user_key
in the app and invalidate the old one.
There is also a web interface for this API to manually send notifications to your phone or to test your setup.
Quota
By default you can send up to 50 messages per day per device. If you need more you can upgrade your account in the app to get 1000 messages per day, this has the additional benefit of removing ads and supporting the development of the app (and making sure I can pay the server costs).
API Requests
To send a new notification you send a POST
request to the URL {{config|baseURL}}/
.
All Parameters can either directly be submitted as URL parameters or they can be put into the POST body (either multipart/form-data or JSON).
You need to supply a valid [user_id, user_key]
pair and a title
for your message, all other parameter are optional.
API Response
If the operation was successful the API will respond with an HTTP statuscode 200 and an JSON payload indicating the send message and your remaining quota
{ "success":true, "message":"Message sent", "response": { "multicast_id":8000000000000000006, "success":1, "failure":0, "canonical_ids":0, "results": [{"message_id":"0:10000000000000000000000000000000d"}] }, "quota":17, "quota_max":100 }
If the operation is not successful the API will respond with a 4xx or 500 HTTP statuscode.
Statuscode | Explanation |
---|---|
200 (OK) | Message sent |
400 (Bad Request) | The request is invalid (missing parameters or wrong values) |
401 (Unauthorized) | The user_id was not found or the user_key is wrong |
403 (Forbidden) | The user has exceeded its daily quota - wait 24 hours or upgrade your account |
500 (Internal Server Error) | There was an internal error while sending your data - try again later |
There is also always a JSON payload with additional information.
The success
field is always there and in the error state you the message
field to get a descritpion of the problem.
{ "success": false, "error": 2101, "errhighlight": -1, "message": "Daily quota reached (100)" }
Message Content
Every message must have a title set. But you also (optionally) add more content, while the title has a max length of 120 characters, the content can be up to 10.000 characters. You can see the whole message with title and content in the app or when clicking on the notification.
If needed the content can be supplied in the content
parameter.
curl \ --data "user_id={userid}" \ --data "user_key={userkey}" \ --data "title={message_title}" \ --data "content={message_content}" \ {{config|baseURL}}/
Message Priority
Currently you can send a message with three different priorities: 0 (low), 1 (normal) and 2 (high). In the app you can then configure a different behaviour for different priorities, e.g. only playing a sound if the notification is high priority.
Priorites are either 0, 1 or 2 and are supplied in the priority
parameter.
If no priority is supplied the message will get the default priority of 1.
curl \ --data "user_id={userid}" \ --data "user_key={userkey}" \ --data "title={message_title}" \ --data "priority={0|1|2}" \ {{config|baseURL}}/
Channels
By default all messages are sent to the user default channel (typically main
)
You can specify a different channel with the channel
parameter, if the channel does not already exist it will be created.
Channel names are case-insensitive and can only contain letters, numbers, underscores and minuses ( /[[:alnum:]\-_]+/
)
curl \ --data "user_id={userid}" \ --data "user_key={userkey}" \ --data "title={message_title}" \ --data "channel={my_channel}" \ {{config|baseURL}}/
Message Uniqueness
Sometimes your script can run in an environment with an unstable connection and you want to implement an automatic re-try mechanism to send a message again if the last try failed due to bad connectivity.
To ensure that a message is only send once you can generate a unique id for your message (I would recommend a simple uuidgen
).
If you send a message with a UUID that was already used in the near past the API still returns OK, but no new message is sent.
The message_id is optional - but if you want to use it you need to supply it via the msg_id
parameter.
curl \ --data "user_id={userid}" \ --data "user_key={userkey}" \ --data "title={message_title}" \ --data "msg_id={message_id}" \ {{config|baseURL}}/
Be aware that the server only saves send messages for a short amount of time. Because of that you can only use this to prevent duplicates in a short time-frame, older messages with the same ID are probably already deleted and the message will be send again.
Custom Time
You can modify the displayed timestamp of a message by sending the timestamp
parameter. The format must be a valid UNIX timestamp (elapsed seconds since 1970-01-01 GMT)
The custom timestamp must be within 48 hours of the current time. This parameter is only intended to supply a more precise value in case the message sending was delayed.
curl \ --data "user_id={userid}" \ --data "user_key={userkey}" \ --data "title={message_title}" \ --data "timestamp={unix_timestamp}" \ {{config|baseURL}}/
Bash script example
Depending on your use case it can be useful to create a bash script that handles things like resending messages if you have connection problems or waiting if there is no quota left.
Here is an example how such a scrippt could look like, you can put it into /usr/local/sbin
and call it with scn_send "title" "content"
(or with more parameters, see the script itself)
{{template|scn_send.html}}