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README.md
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README.md
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# the problem
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# Problem
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End-user applications are huge, with tons of libraries used and are a pain in the ass to maintain.
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Libraries are huge, with a lot of things happening, with changes that break everything on a regular basis, with almost each time very few people working on it.
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- Is this library working on every platform?
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- Are the libraries I need (and the good version) available for my platform, do I need to install SomeBullshitOS or ProtoContenerizator3000 to code?
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# how to change that ?
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# How to change that?
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**Network protocols**
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You want to download a file, you will always have the same input: a string corresponding to the file to get, such as _ftp://example.com/file.txt_.
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You don't have to worry about the protocol to use in your own application, the burden is on the dedicated *downloading* service.
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# benefits
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# Benefits
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**Awesome abstractions**.
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- Services: daemons providing a feature (windowing, audio, network, input, pubsub, …)
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- Applications: end-user applications (browser, mail user agent, instant messaging app, …)
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#### examples
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#### Examples
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A browser that can download everything, via every existing protocol.
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No any specific code in the browser itself and no configuration.
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Figures, a lot of them, to explain everything.
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# connection init (draft)
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# Connection init (draft)
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## how things happen
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## How things happen
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1. Service creates a unix socket /tmp/service-index-version.sock
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1. Application connects to /tmp/service-index-version.sock
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- index: process index (to launch a service several times)
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- version: service version
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# pure "networking" view (what should go in the sockets)
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# Networking point of view (what should go in the sockets)
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#### connection
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#### Connection
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1. Application connects to /tmp/service-index-version.sock
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1. Service acknowledges (empty message)
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#### disconnection
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#### Disconnection
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1. Application sends a message "CLOSE" to the server
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#### data
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#### Data
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1. Application or server sends a message "DATA", no acknowledgement
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# messages format
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# Message formats
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In order to communicate between the application and the service, we use the Type-Length-Value format.
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This will be used with some conventions.
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3 | ack | to send an acknowledgment
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4 | message | to send data
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# Services Status
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# Service Status
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Go to the relevant directory for details.
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