UC-2: Pushing a new post to friends

[gtoutin]

When a text post is created, push it out to the author's friends. Permissioning is handled.
This depends on #1 and #14 and #29

This is done when

• The function that creates a new post calls another function to handle the pushing.
• A pushing mechanism is implemented to share a post with other online users.
• A pulling mechanism is implemented to receive new posts from other online users.

Acceptance criteria

• Creating a post triggers pushing or the status of being available.
• A post can be seen by a friend.

Test cases

• Mock out the database. Create a user and a friend user. Create a post. Call the function to trigger the push. Test that the post is available.
• Test the function that pulls in new posts for viewing.

[gtoutin]

changed to medium because two other tickets have been created from this ticket to split out some of the work done

[gtoutin]

• Implement p2p client connections by handling offer/answer to send to signaling server
• Implement pulling
• Implement pushing

[gtoutin]

something will eventually have to go in the function that gets called when the user creates a post.
post manager should exist. that function will have a handle to it and then call the pushing mechanism
maybe when user is online and there is new content, a signal is sent out saying there is new content. then each friend is individually responsible for requesting new content. friend can pass a timestamp of the last received content and then the managers will collect from the database the right content to send to that friend.