This application helps to route webhooks to localhost.

  ╔══════════════════╗            ┌──────────────────┐
  ║                  ║            │                  │
  ║       whps       ║<──webhook──│     Service      │
  ║                  ║            │                  │
  ╚══════════════════╝            └──────────────────┘
            ^
            ┃
       websocket
            ┃
┌───────────v──────────────────────────────Local machine
│ ┌──────────────────┐            ┌──────────────────┐ │
│ │                  │            │                  │ │
│ │       whpc       │──webhook──>│   Application    │ │
│ │                  │            │                  │ │
│ └──────────────────┘            └──────────────────┘ │
└──────────────────────────────────────────────────────┘

This is a server. Client (whpc) opens websocket connection to the server. Then, Service can send webhook to the server and it will route request to the client via websocket passing request headers and body. Now the client will be able to reproduce the webhook to the local application.

Client implementation to establish websocket connection to the server and relay message to the local application.

This is a backend. It should be used via client.

Service can push webhooks to the https://whps.herokuapp.com/webhook/<channame>. The <channame> can be arbitrary alphanumeric name of your choice. E.g. https://whps.herokuapp.com/webhook/betazoid.

To receive webhook locally one should open websocket connection beforehand to the https://whps.herokuapp.com/websocket/betazoid. Here, betazoid is the <channame> as in the previous url.

Now, as soon as whps receives the webhook, it will relay it to the client.