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25 lines
1.2 KiB
Markdown
25 lines
1.2 KiB
Markdown
---
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title: Design Concept
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---
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Mongoose is a multi-protocol networking library that implements non-blocking,
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asyncronous IO and provides event-based API. It has three basic data structures:
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- [`struct mg_mgr`](#TODO) is an event manager that holds all active
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connections
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- [`struct mg_connection`](#TODO) describes a connection
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- [`struct mbuf`](#TODO) describes data buffer (received or sent data)
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Connections could be either *listening*, *outbound* or *inbound*. Outbound
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connections are created by [`mg_connect()`](#TODO) call. Listening connections
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are created by [`mg_bind()`](#TODO) call. Inbound connections are those
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accepted by a listening connection. Each connection is described by [`struct
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mg_connection`](#TODO) structure, which has a number of fields like socket,
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event handler function, send/receive buffer, flags, et cetera.
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Mongoose usage pattern is to declare and initialize event manager, create
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connections and create an event loop by calling [`mg_mgr_poll()`](#TODO) in a
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loop. [`mg_mgr_poll()`](#TODO) iterates over all sockets, accepts new
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connections, sends and receives data, closes connections, and calls event
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handler functions for the respective events.
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