RT-Thread_v4.1.1
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components/net/at/at_socket/at_socket.c
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components/net/at/at_socket/at_socket.c
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components/net/at/at_socket/at_socket.h
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components/net/at/at_socket/at_socket.h
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/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-06-06 chenYong first version
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* 2022-06-02 xianxistu add implement about "AT server"
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*/
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#ifndef __AT_SOCKET_H__
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#define __AT_SOCKET_H__
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <rthw.h>
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#include <netdb.h>
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#include <sys/socket.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef AT_SOCKET_RECV_BFSZ
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#define AT_SOCKET_RECV_BFSZ 512
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#endif
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#define AT_DEFAULT_RECVMBOX_SIZE 10
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#define AT_DEFAULT_ACCEPTMBOX_SIZE 10
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/* sal socket magic word */
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#define AT_SOCKET_MAGIC 0xA100
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#ifdef AT_USING_SOCKET_SERVER
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#define AT_SOCKET_INFO_LEN (sizeof("SOCKET:") + 4)
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#endif
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/* Current state of the AT socket. */
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enum at_socket_state
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{
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AT_SOCKET_NONE,
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AT_SOCKET_OPEN,
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AT_SOCKET_LISTEN,
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AT_SOCKET_CONNECT,
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AT_SOCKET_CLOSED
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};
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enum at_socket_type
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{
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AT_SOCKET_INVALID = 0,
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AT_SOCKET_TCP = 0x10, /* TCP IPv4 */
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AT_SOCKET_UDP = 0x20, /* UDP IPv4 */
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};
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typedef enum
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{
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AT_SOCKET_EVT_RECV,
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AT_SOCKET_EVT_CLOSED,
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#ifdef AT_USING_SOCKET_SERVER
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AT_SOCKET_EVT_CONNECTED,
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#endif
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} at_socket_evt_t;
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struct at_socket;
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struct at_device;
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typedef void (*at_evt_cb_t)(struct at_socket *socket, at_socket_evt_t event, const char *buff, size_t bfsz);
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/* A callback prototype to inform about events for AT socket */
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typedef void (* at_socket_callback)(struct at_socket *conn, int event, uint16_t len);
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/* AT socket operations function */
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struct at_socket_ops
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{
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int (*at_connect)(struct at_socket *socket, char *ip, int32_t port, enum at_socket_type type, rt_bool_t is_client);
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int (*at_closesocket)(struct at_socket *socket);
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int (*at_send)(struct at_socket *socket, const char *buff, size_t bfsz, enum at_socket_type type);
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int (*at_domain_resolve)(const char *name, char ip[16]);
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void (*at_set_event_cb)(at_socket_evt_t event, at_evt_cb_t cb);
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int (*at_socket)(struct at_device *device, enum at_socket_type type);
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#ifdef AT_USING_SOCKET_SERVER
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int (*at_listen)(struct at_socket *socket, int backlog);
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#endif
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};
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/* AT receive package list structure */
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struct at_recv_pkt
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{
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rt_slist_t list;
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size_t bfsz_totle;
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size_t bfsz_index;
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char *buff;
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};
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typedef struct at_recv_pkt *at_recv_pkt_t;
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#ifdef AT_USING_SOCKET_SERVER
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struct at_listen_state
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{
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uint16_t is_listen;
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uint16_t port;
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};
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#endif
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struct at_socket
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{
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/* AT socket magic word */
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uint32_t magic;
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int socket;
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#ifdef AT_USING_SOCKET_SERVER
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struct at_listen_state listen;
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#endif
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/* device releated information for the socket */
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void *device;
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/* type of the AT socket (TCP, UDP or RAW) */
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enum at_socket_type type;
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/* current state of the AT socket */
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enum at_socket_state state;
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/* sockets operations */
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const struct at_socket_ops *ops;
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/* receive semaphore, received data release semaphore */
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rt_sem_t recv_notice;
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rt_mutex_t recv_lock;
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rt_slist_t recvpkt_list;
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/* timeout to wait for send or received data in milliseconds */
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int32_t recv_timeout;
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int32_t send_timeout;
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/* A callback function that is informed about events for this AT socket */
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at_socket_callback callback;
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/* number of times data was received, set by event_callback() */
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uint16_t rcvevent;
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/* number of times data was ACKed (free send buffer), set by event_callback() */
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uint16_t sendevent;
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/* error happened for this socket, set by event_callback() */
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uint16_t errevent;
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#ifdef SAL_USING_POSIX
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rt_wqueue_t wait_head;
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#endif
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rt_slist_t list;
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/* user-specific data */
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void *user_data;
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};
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int at_socket(int domain, int type, int protocol);
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int at_closesocket(int socket);
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int at_shutdown(int socket, int how);
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int at_bind(int socket, const struct sockaddr *name, socklen_t namelen);
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#ifdef AT_USING_SOCKET_SERVER
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int at_listen(int socket, int backlog);
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#endif
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int at_connect(int socket, const struct sockaddr *name, socklen_t namelen);
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#ifdef AT_USING_SOCKET_SERVER
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int at_accept(int socket, struct sockaddr *name, socklen_t *namelen);
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#endif
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int at_sendto(int socket, const void *data, size_t size, int flags, const struct sockaddr *to, socklen_t tolen);
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int at_send(int socket, const void *data, size_t size, int flags);
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int at_recvfrom(int socket, void *mem, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen);
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int at_recv(int socket, void *mem, size_t len, int flags);
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int at_getsockopt(int socket, int level, int optname, void *optval, socklen_t *optlen);
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int at_setsockopt(int socket, int level, int optname, const void *optval, socklen_t optlen);
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struct hostent *at_gethostbyname(const char *name);
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int at_getaddrinfo(const char *nodename, const char *servname, const struct addrinfo *hints, struct addrinfo **res);
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void at_freeaddrinfo(struct addrinfo *ai);
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struct at_socket *at_get_socket(int socket);
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#ifdef AT_USING_SOCKET_SERVER
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struct at_socket *at_get_base_socket(int base_socket);
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#endif
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#ifndef RT_USING_SAL
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#define socket(domain, type, protocol) at_socket(domain, type, protocol)
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#define closesocket(socket) at_closesocket(socket)
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#define shutdown(socket, how) at_shutdown(socket, how)
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#define bind(socket, name, namelen) at_bind(socket, name, namelen)
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#define connect(socket, name, namelen) at_connect(socket, name, namelen)
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#define sendto(socket, data, size, flags, to, tolen) at_sendto(socket, data, size, flags, to, tolen)
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#define send(socket, data, size, flags) at_send(socket, data, size, flags)
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#define recvfrom(socket, mem, len, flags, from, fromlen) at_recvfrom(socket, mem, len, flags, from, fromlen)
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#define getsockopt(socket, level, optname, optval, optlen) at_getsockopt(socket, level, optname, optval, optlen)
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#define setsockopt(socket, level, optname, optval, optlen) at_setsockopt(socket, level, optname, optval, optlen)
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#define gethostbyname(name) at_gethostbyname(name)
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#define getaddrinfo(nodename, servname, hints, res) at_getaddrinfo(nodename, servname, hints, res)
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#define freeaddrinfo(ai) at_freeaddrinfo(ai)
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#endif /* RT_USING_SAL */
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#ifdef __cplusplus
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}
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#endif
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#endif /* AT_SOCKET_H__ */
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