ipcd is a program to handle networking for all other software.

# WARNING

Security is TBD. Currently, only TCPd is implemented, which means no communication security.

# ipcd functionalities

## firewall

`ipcd` has to filter the connections to local services.

```Warning
WIP.
```

## authentication

`ipcd` has to authenticate clients asking for a service.

```Warning
WIP.
```

## redirection

Central networking management allows for functionalities such as redirections.
For example, a local client asking for the authentication can be authenticated with a distant authentication service.

## encapsulation

```Warning
TBD.  WIP.
```


# Configuration

Configuration is yet to be defined.

* redirection
* firewall
* authentication

# Usage

This program can be used as follow:

```sh
# with some static rules
ipcd --allow in authd tls:example.com --deny in * * --allow out pong tls:pong.example.com:9000
ipcd --redirect authd nextversion-authd
```

## usage examples

`ipcd` is requested each time a client is launched when the right environment variable is used.
For example, we want to connect to a distant `authd` service:

	IPC_NETWORK="authd tls://user@passwd:example.com:9000/authd"


```Warning
Currently, the ipcd only works with tcp and unix routes.
```

	IPC_NETWORK="pongd tcp://example.com:9000/pongd"

# Changelog

* v0.1: (current) ipcd (redirections), tcpd

  * `ipcd` understands URIs (`tcp://example.com/service` or `unix:///service`)
  * `tcp` scheme is understood: `ipcd` contacts the `tcpd` service
  * `unix` scheme is understood: `ipcd` performs a redirection

* v0.2: websocketd is up and running, some documentation is available

  * websocketd
    * IPC services are accessible via WebSockets
	* `websocketc` is an example of client for it, not requiring libipc
  * documentation
    * pongd is a service template, up and running, 

# Roadmap

* v0.3: websocket scheme for clients, transparently usable through `ipcd`
* v0.4: firewall + redirections
* v0.5: static configuration: default routes, authentication
* v0.6: tlsd built-in, pre-shared keys
* v0.7: udpd
* v1.0: TBD


# ipcd explanations

1. client contacts `ipcd`
1. `ipcd` understand the request from the client then contacts the local service responsible for the communication protocol required
1. once the distant connection is established (between the two `tlsd` services for example) `ipcd` provides a file descriptor to the client
1. finally, the client can perform requests to the distant service transparently

	during the connection:

	client <-> ipcd <-> tlsd <=> tlsd <-> ipcd <-> service

	then:

	client <-> tlsd <=> tlsd <-> server