| Padding | Network.HTTP2.Frame, Network.HTTP2 |
| Path | Network.HTTP2.Client, Network.HTTP2.Internal, Network.HTTP2.Server |
| payloadLength | Network.HTTP2.Frame, Network.HTTP2 |
| PingFrame | Network.HTTP2.Frame, Network.HTTP2 |
| PositionRead | Network.HTTP2.Client, Network.HTTP2.Internal, Network.HTTP2.Server |
| PositionReadMaker | Network.HTTP2.Client, Network.HTTP2.Internal, Network.HTTP2.Server |
| Precedence | |
| 1 (Type/Class) | Network.HTTP2.Priority.Internal, Network.HTTP2.Priority |
| 2 (Data Constructor) | Network.HTTP2.Priority.Internal |
| prepare | Network.HTTP2.Priority |
| Priority | |
| 1 (Type/Class) | Network.HTTP2.Frame, Network.HTTP2 |
| 2 (Data Constructor) | Network.HTTP2.Frame, Network.HTTP2 |
| PriorityFrame | Network.HTTP2.Frame, Network.HTTP2 |
| PriorityQueue | |
| 1 (Type/Class) | Network.HTTP2.Priority.Internal |
| 2 (Data Constructor) | Network.HTTP2.Priority.Internal |
| PriorityTree | Network.HTTP2.Priority |
| promiseRequestPath | Network.HTTP2.Server |
| promiseResponse | Network.HTTP2.Server |
| promiseWeight | Network.HTTP2.Server |
| ProtocolError | Network.HTTP2.Frame, Network.HTTP2 |
| PushPromise | Network.HTTP2.Server |
| pushPromise | Network.HTTP2.Server |
| PushPromiseFrame | Network.HTTP2.Frame, Network.HTTP2 |