As mentioned earlier, much of Omni Sync Server is built atop FreeBSD, and the push provider is no exception.

Omni's push provider needs to do a fair bit of preprocessing and other work for every notification it prepares to send. In the current provider, we consider each notification.

Now that we've converted our notification data into a format that's suitable for sending to Apple, our fledgling push provider needs a connection into APNs in order to send that data.

After researching languages and choosing Go to implement a push provider for OmniFocus, we needed to get started writing code.

Here at the Omni Group, we have a long history of writing code in Objective-C. However, our attention turned to building a provider that could handle the large existing OmniFocus customer base, along with the specific traffic patterns the app generates.