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25 lines
1.1 KiB
Markdown
25 lines
1.1 KiB
Markdown
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---
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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
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structures:
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- `struct mg_mgr` is an event manager that holds all active connections
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- `struct mg_connection` describes a connection
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- `struct mbuf` 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()` call. Listening connections are
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created by `mg_bind()` call. Inbound connections are those accepted by a
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listening connection. Each connection is described by `struct mg_connection`
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structure, which has a number of fields like socket, event handler function,
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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()` in a loop.
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`mg_mgr_poll()` iterates over all sockets, accepts new connections, sends and
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receives data, closes connections, and calls event handler functions for the
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respective events.
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