2016-05-26 18:27:59 +02:00
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# connection init (draft)
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2016-09-13 21:56:39 +02:00
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## how things happen
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2016-05-26 18:27:59 +02:00
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2016-12-14 22:29:36 +01:00
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* Service: daemon providing a feature (windowing, audio, pubsub, …)
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* Application: specific application (browser, instant messaging, …)
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2016-05-26 18:47:28 +02:00
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2016-12-14 22:29:36 +01:00
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* service: service name
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* index: process index (to launch a service several times)
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* version: service version
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2016-05-26 18:47:28 +02:00
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2016-12-14 22:29:36 +01:00
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1. Service creates a unix socket /tmp/service-index-version.sock
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2. Application connects to /tmp/service-index-version.sock
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2016-05-26 18:27:59 +02:00
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2016-12-14 22:29:36 +01:00
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## pure "networking" view (what should go in the sockets)
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2016-05-26 18:27:59 +02:00
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2016-12-14 22:29:36 +01:00
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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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2016-05-26 18:27:59 +02:00
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# messages format
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2016-12-14 22:29:36 +01:00
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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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2016-09-13 21:56:39 +02:00
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This will be used with some conventions.
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2016-05-26 18:27:59 +02:00
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2016-12-14 22:29:36 +01:00
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## programming, debug
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2016-09-15 23:08:08 +02:00
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2016-05-26 18:27:59 +02:00
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## overview
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2016-09-13 21:56:39 +02:00
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The format will be "type : value".
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2016-05-26 18:27:59 +02:00
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2016-09-13 21:56:39 +02:00
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The type will be a simple byte :
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2016-05-26 18:27:59 +02:00
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2016-05-26 18:47:28 +02:00
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* <0 - 15> : control, meta data
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* <16 - 127> : later use
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* <128 - 255> : application specific (windowing system, audio system, …)
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2016-05-26 18:27:59 +02:00
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2016-09-13 21:56:39 +02:00
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index | abbreviation | semantic
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0 | close | to close the communication between the application and the service
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2016-09-15 23:08:08 +02:00
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1 | message | to send data
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2 | error | to send an error message
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2016-12-14 22:29:36 +01:00
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3 | ack | to send an acknowledgment
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