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//
// Copyright 2025 Staysail Systems, Inc. <info@staysail.tech>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#ifndef CORE_STREAM_H
#define CORE_STREAM_H
// This provides an abstraction for byte streams, allowing polymorphic
// use of them in rather flexible contexts.
#include "defs.h"
// Private property operations (these include the types.)
extern nng_err nni_stream_get(
nng_stream *, const char *, void *, size_t *, nni_type);
extern nng_err nni_stream_set(
nng_stream *, const char *, const void *, size_t, nni_type);
extern nng_err nni_stream_dialer_get(
nng_stream_dialer *, const char *, void *, size_t *, nni_type);
extern nng_err nni_stream_dialer_set(
nng_stream_dialer *, const char *, const void *, size_t, nni_type);
extern nng_err nni_stream_dialer_set_tls(
nng_stream_dialer *, nng_tls_config *);
extern nng_err nni_stream_dialer_get_tls(
nng_stream_dialer *, nng_tls_config **);
extern nng_err nni_stream_listener_get(
nng_stream_listener *, const char *, void *, size_t *, nni_type);
extern nng_err nni_stream_listener_set(
nng_stream_listener *, const char *, const void *, size_t, nni_type);
extern nng_err nni_stream_listener_set_tls(
nng_stream_listener *, nng_tls_config *);
extern nng_err nni_stream_listener_get_tls(
nng_stream_listener *, nng_tls_config **);
// This is the common implementation of a connected byte stream. It should be
// the first element of any implementation. Applications are not permitted to
// access it directly.
struct nng_stream {
void (*s_free)(void *);
void (*s_close)(void *);
void (*s_stop)(void *);
void (*s_recv)(void *, nng_aio *);
void (*s_send)(void *, nng_aio *);
nng_err (*s_get)(void *, const char *, void *, size_t *, nni_type);
nng_err (*s_set)(void *, const char *, const void *, size_t, nni_type);
const nng_sockaddr *(*s_peer_addr)(void *);
const nng_sockaddr *(*s_self_addr)(void *);
nng_err (*s_peer_cert)(void *, nng_tls_cert **);
};
// Dialer implementation. Stream dialers create streams.
struct nng_stream_dialer {
void (*sd_free)(void *);
void (*sd_close)(void *);
void (*sd_stop)(void *);
void (*sd_dial)(void *, nng_aio *);
nng_err (*sd_get)(void *, const char *, void *, size_t *, nni_type);
nng_err (*sd_set)(
void *, const char *, const void *, size_t, nni_type);
nng_err (*sd_get_tls)(void *, nng_tls_config **);
nng_err (*sd_set_tls)(void *, nng_tls_config *);
};
// Listener implementation. Stream listeners accept connections and create
// streams.
struct nng_stream_listener {
void (*sl_free)(void *);
void (*sl_close)(void *);
void (*sl_stop)(void *);
nng_err (*sl_listen)(void *);
void (*sl_accept)(void *, nng_aio *);
nng_err (*sl_get)(void *, const char *, void *, size_t *, nni_type);
nng_err (*sl_set)(
void *, const char *, const void *, size_t, nni_type);
nng_err (*sl_get_tls)(void *, nng_tls_config **);
nng_err (*sl_set_tls)(void *, nng_tls_config *);
nng_err (*sl_set_security_descriptor)(void *, void *);
};
#endif // CORE_STREAM_H
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