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#Interactive
##Pipes
###Starting pipes
* Client (Driver/Platform)
* `cd ./app/drivers/$PLATFORM/; rake pipe` *or* `cd ./; rake pipe:driver PLATFORM=$PLATFORM`
* Server
* `cd ./; rake pipe:server PLATFORM=$PLATFORM`
###What $stdout and $stdin does for pipes
* Server
- `$stdin` => `int_dispatch`
- `if_dispatch` => `$stdout`
* Client
- `$stdin` => `if_dispatch`
- `int_dispatch` => `$stdout`
All communication *coming* from `$stdin` and *going* to `$stdout` is in un-escaped JSON formatting that follows the conventions mentioned in [Messaging](./messaging.md).
The test suites assume particular behavior of the pipes. Please review [./spec/env/iface.rb](../spec/env/iface.rb) for the method named `pipe_suite` for the proper behavior.
####Examples
#####Server ➜ Client
1. **Server** calls `if_disptatch([[0, 0, 'hello']])` (**The additional 0 at the beginning is the queue, 0 in this case is the main queue**)
2. **Server** `$stdout` *writes* `[0, 0, 'hello']\n`
3. **Client** `$stdin` *gets* `[0, 0, 'hello']\n`
4. **Client** calls `if_dispatch([0, 0, 'hello'])`
#####Client ➜ Server
1. **Client** calls `int_dispatch([0, 'hello'])`
2. **Client** `$stdout` *writes* `[0, 'hello']\n`
3. **Server** `$stdin` *gets* `[0, 'hello']\n`
4. **Server** calls `int_dispatch([0, 'hello'])`
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