SYNOPSIS
#include <nng/nng.h>
typedef uint32_t nng_socket;DESCRIPTION
An nng_socket is a handle to an underlying “socket” object.
All communication between the application and remote Scalability Protocol
peers is done through sockets.
A given socket can have multiple dialers (nng_dialer)
and/or (nng_listener), and multiple
pipes (nng_pipe), and
may be connected to multiple transports at the same time.
However, a given socket will have exactly one “protocol” associated with it,
and is responsible for any state machines or other protocol-specific logic.
Although nng_socket is an integer data type, these objects are not
ordinary file descriptors, and can only be used with the functions that
explicitly indicate that it safe and appropropate to do so.
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Each nng_socket is created by a protocol-specific constructor, such as
nng_rep_open().
When the socket is no longer needed, it can be closed with
nng_close().