[457] | 1 | /**
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| 2 | * @file
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| 3 | * Application layered TCP connection API (to be used from TCPIP thread)\n
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| 4 | *
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| 5 | * This file contains the generic API.
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| 6 | * For more details see @ref altcp_api.
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| 7 | */
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| 8 |
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| 9 | /*
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| 10 | * Copyright (c) 2017 Simon Goldschmidt
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| 11 | * All rights reserved.
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| 12 | *
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| 13 | * Redistribution and use in source and binary forms, with or without modification,
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| 14 | * are permitted provided that the following conditions are met:
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| 15 | *
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| 16 | * 1. Redistributions of source code must retain the above copyright notice,
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| 17 | * this list of conditions and the following disclaimer.
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| 18 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 19 | * this list of conditions and the following disclaimer in the documentation
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| 20 | * and/or other materials provided with the distribution.
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| 21 | * 3. The name of the author may not be used to endorse or promote products
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| 22 | * derived from this software without specific prior written permission.
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| 23 | *
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| 24 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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| 25 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 26 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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| 27 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 28 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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| 29 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 30 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 31 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 32 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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| 33 | * OF SUCH DAMAGE.
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| 34 | *
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| 35 | * This file is part of the lwIP TCP/IP stack.
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| 36 | *
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| 37 | * Author: Simon Goldschmidt <goldsimon@gmx.de>
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| 38 | *
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| 39 | */
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| 40 | #ifndef LWIP_HDR_ALTCP_H
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| 41 | #define LWIP_HDR_ALTCP_H
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| 42 |
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| 43 | #include "lwip/opt.h"
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| 44 |
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| 45 | #if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */
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| 46 |
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| 47 | #include "lwip/tcpbase.h"
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| 48 | #include "lwip/err.h"
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| 49 | #include "lwip/pbuf.h"
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| 50 | #include "lwip/ip_addr.h"
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| 51 |
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| 52 | #ifdef __cplusplus
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| 53 | extern "C" {
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| 54 | #endif
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| 55 |
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| 56 | struct altcp_pcb;
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| 57 | struct altcp_functions;
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| 58 |
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| 59 | typedef err_t (*altcp_accept_fn)(void *arg, struct altcp_pcb *new_conn, err_t err);
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| 60 | typedef err_t (*altcp_connected_fn)(void *arg, struct altcp_pcb *conn, err_t err);
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| 61 | typedef err_t (*altcp_recv_fn)(void *arg, struct altcp_pcb *conn, struct pbuf *p, err_t err);
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| 62 | typedef err_t (*altcp_sent_fn)(void *arg, struct altcp_pcb *conn, u16_t len);
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| 63 | typedef err_t (*altcp_poll_fn)(void *arg, struct altcp_pcb *conn);
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| 64 | typedef void (*altcp_err_fn)(void *arg, err_t err);
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| 65 |
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| 66 | typedef struct altcp_pcb* (*altcp_new_fn)(void *arg, u8_t ip_type);
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| 67 |
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| 68 | struct altcp_pcb {
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| 69 | const struct altcp_functions *fns;
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| 70 | struct altcp_pcb *inner_conn;
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| 71 | void *arg;
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| 72 | void *state;
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| 73 | /* application callbacks */
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| 74 | altcp_accept_fn accept;
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| 75 | altcp_connected_fn connected;
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| 76 | altcp_recv_fn recv;
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| 77 | altcp_sent_fn sent;
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| 78 | altcp_poll_fn poll;
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| 79 | altcp_err_fn err;
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| 80 | u8_t pollinterval;
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| 81 | };
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| 82 |
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| 83 | /** @ingroup altcp */
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| 84 | typedef struct altcp_allocator_s {
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| 85 | /** Allocator function */
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| 86 | altcp_new_fn alloc;
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| 87 | /** Argument to allocator function */
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| 88 | void *arg;
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| 89 | } altcp_allocator_t;
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| 90 |
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| 91 | struct altcp_pcb *altcp_new(altcp_allocator_t *allocator);
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| 92 | struct altcp_pcb *altcp_new_ip6(altcp_allocator_t *allocator);
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| 93 | struct altcp_pcb *altcp_new_ip_type(altcp_allocator_t *allocator, u8_t ip_type);
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| 94 |
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| 95 | void altcp_arg(struct altcp_pcb *conn, void *arg);
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| 96 | void altcp_accept(struct altcp_pcb *conn, altcp_accept_fn accept);
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| 97 | void altcp_recv(struct altcp_pcb *conn, altcp_recv_fn recv);
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| 98 | void altcp_sent(struct altcp_pcb *conn, altcp_sent_fn sent);
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| 99 | void altcp_poll(struct altcp_pcb *conn, altcp_poll_fn poll, u8_t interval);
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| 100 | void altcp_err(struct altcp_pcb *conn, altcp_err_fn err);
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| 101 |
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| 102 | void altcp_recved(struct altcp_pcb *conn, u16_t len);
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| 103 | err_t altcp_bind(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port);
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| 104 | err_t altcp_connect(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port, altcp_connected_fn connected);
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| 105 |
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| 106 | /* return conn for source code compatibility to tcp callback API only */
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| 107 | struct altcp_pcb *altcp_listen_with_backlog_and_err(struct altcp_pcb *conn, u8_t backlog, err_t *err);
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| 108 | #define altcp_listen_with_backlog(conn, backlog) altcp_listen_with_backlog_and_err(conn, backlog, NULL)
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| 109 | /** @ingroup altcp */
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| 110 | #define altcp_listen(conn) altcp_listen_with_backlog_and_err(conn, TCP_DEFAULT_LISTEN_BACKLOG, NULL)
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| 111 |
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| 112 | void altcp_abort(struct altcp_pcb *conn);
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| 113 | err_t altcp_close(struct altcp_pcb *conn);
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| 114 | err_t altcp_shutdown(struct altcp_pcb *conn, int shut_rx, int shut_tx);
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| 115 |
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| 116 | err_t altcp_write(struct altcp_pcb *conn, const void *dataptr, u16_t len, u8_t apiflags);
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| 117 | err_t altcp_output(struct altcp_pcb *conn);
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| 118 |
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| 119 | u16_t altcp_mss(struct altcp_pcb *conn);
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| 120 | u16_t altcp_sndbuf(struct altcp_pcb *conn);
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| 121 | u16_t altcp_sndqueuelen(struct altcp_pcb *conn);
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| 122 | void altcp_nagle_disable(struct altcp_pcb *conn);
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| 123 | void altcp_nagle_enable(struct altcp_pcb *conn);
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| 124 | int altcp_nagle_disabled(struct altcp_pcb *conn);
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| 125 |
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| 126 | void altcp_setprio(struct altcp_pcb *conn, u8_t prio);
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| 127 |
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| 128 | err_t altcp_get_tcp_addrinfo(struct altcp_pcb *conn, int local, ip_addr_t *addr, u16_t *port);
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| 129 | ip_addr_t *altcp_get_ip(struct altcp_pcb *conn, int local);
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| 130 | u16_t altcp_get_port(struct altcp_pcb *conn, int local);
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| 131 |
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| 132 | #ifdef LWIP_DEBUG
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| 133 | enum tcp_state altcp_dbg_get_tcp_state(struct altcp_pcb *conn);
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| 134 | #endif
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| 135 |
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| 136 | #ifdef __cplusplus
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| 137 | }
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| 138 | #endif
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| 139 |
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| 140 | #else /* LWIP_ALTCP */
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| 141 |
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| 142 | /* ALTCP disabled, define everything to link against tcp callback API (e.g. to get a small non-ssl httpd) */
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| 143 |
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| 144 | #include "lwip/tcp.h"
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| 145 |
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| 146 | #define altcp_accept_fn tcp_accept_fn
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| 147 | #define altcp_connected_fn tcp_connected_fn
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| 148 | #define altcp_recv_fn tcp_recv_fn
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| 149 | #define altcp_sent_fn tcp_sent_fn
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| 150 | #define altcp_poll_fn tcp_poll_fn
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| 151 | #define altcp_err_fn tcp_err_fn
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| 152 |
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| 153 | #define altcp_pcb tcp_pcb
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| 154 | #define altcp_tcp_new_ip_type tcp_new_ip_type
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| 155 | #define altcp_tcp_new tcp_new
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| 156 | #define altcp_tcp_new_ip6 tcp_new_ip6
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| 157 |
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| 158 | #define altcp_new(allocator) tcp_new()
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| 159 | #define altcp_new_ip6(allocator) tcp_new_ip6()
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| 160 | #define altcp_new_ip_type(allocator, ip_type) tcp_new_ip_type(ip_type)
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| 161 |
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| 162 | #define altcp_arg tcp_arg
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| 163 | #define altcp_accept tcp_accept
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| 164 | #define altcp_recv tcp_recv
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| 165 | #define altcp_sent tcp_sent
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| 166 | #define altcp_poll tcp_poll
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| 167 | #define altcp_err tcp_err
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| 168 |
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| 169 | #define altcp_recved tcp_recved
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| 170 | #define altcp_bind tcp_bind
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| 171 | #define altcp_connect tcp_connect
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| 172 |
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| 173 | #define altcp_listen_with_backlog_and_err tcp_listen_with_backlog_and_err
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| 174 | #define altcp_listen_with_backlog tcp_listen_with_backlog
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| 175 | #define altcp_listen tcp_listen
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| 176 |
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| 177 | #define altcp_abort tcp_abort
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| 178 | #define altcp_close tcp_close
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| 179 | #define altcp_shutdown tcp_shutdown
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| 180 |
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| 181 | #define altcp_write tcp_write
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| 182 | #define altcp_output tcp_output
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| 183 |
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| 184 | #define altcp_mss tcp_mss
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| 185 | #define altcp_sndbuf tcp_sndbuf
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| 186 | #define altcp_sndqueuelen tcp_sndqueuelen
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| 187 | #define altcp_nagle_disable tcp_nagle_disable
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| 188 | #define altcp_nagle_enable tcp_nagle_enable
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| 189 | #define altcp_nagle_disabled tcp_nagle_disabled
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| 190 | #define altcp_setprio tcp_setprio
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| 191 |
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| 192 | #define altcp_get_tcp_addrinfo tcp_get_tcp_addrinfo
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| 193 | #define altcp_get_ip(pcb, local) ((local) ? (&(pcb)->local_ip) : (&(pcb)->remote_ip))
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| 194 |
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| 195 | #ifdef LWIP_DEBUG
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| 196 | #define altcp_dbg_get_tcp_state tcp_dbg_get_tcp_state
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| 197 | #endif
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| 198 |
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| 199 | #endif /* LWIP_ALTCP */
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| 200 |
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| 201 | #endif /* LWIP_HDR_ALTCP_H */
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