1/** 2 * @file 3 * Application layered TCP connection API (to be used from TCPIP thread)\n 4 * This interface mimics the tcp callback API to the application while preventing 5 * direct linking (much like virtual functions). 6 * This way, an application can make use of other application layer protocols 7 * on top of TCP without knowing the details (e.g. TLS, proxy connection). 8 */ 9 10/* 11 * Copyright (c) 2017 Simon Goldschmidt 12 * All rights reserved. 13 * 14 * Redistribution and use in source and binary forms, with or without modification, 15 * are permitted provided that the following conditions are met: 16 * 17 * 1. Redistributions of source code must retain the above copyright notice, 18 * this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright notice, 20 * this list of conditions and the following disclaimer in the documentation 21 * and/or other materials provided with the distribution. 22 * 3. The name of the author may not be used to endorse or promote products 23 * derived from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 28 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 30 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 33 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 34 * OF SUCH DAMAGE. 35 * 36 * This file is part of the lwIP TCP/IP stack. 37 * 38 * Author: Simon Goldschmidt <goldsimon@gmx.de> 39 * 40 */ 41#ifndef LWIP_HDR_ALTCP_PRIV_H 42#define LWIP_HDR_ALTCP_PRIV_H 43 44#include "lwip/opt.h" 45 46#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */ 47 48#include "lwip/altcp.h" 49#include "lwip/ip_addr.h" 50 51#ifdef __cplusplus 52extern "C" { 53#endif 54 55struct altcp_pcb *altcp_alloc(void); 56void altcp_free(struct altcp_pcb *conn); 57 58/* Function prototypes for application layers */ 59typedef void (*altcp_set_poll_fn)(struct altcp_pcb *conn, u8_t interval); 60typedef void (*altcp_recved_fn)(struct altcp_pcb *conn, u16_t len); 61typedef err_t (*altcp_bind_fn)(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port); 62typedef err_t (*altcp_connect_fn)(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port, altcp_connected_fn connected); 63 64typedef struct altcp_pcb *(*altcp_listen_fn)(struct altcp_pcb *conn, u8_t backlog, err_t *err); 65 66typedef void (*altcp_abort_fn)(struct altcp_pcb *conn); 67typedef err_t (*altcp_close_fn)(struct altcp_pcb *conn); 68typedef err_t (*altcp_shutdown_fn)(struct altcp_pcb *conn, int shut_rx, int shut_tx); 69 70typedef err_t (*altcp_write_fn)(struct altcp_pcb *conn, const void *dataptr, u16_t len, u8_t apiflags); 71typedef err_t (*altcp_output_fn)(struct altcp_pcb *conn); 72 73typedef u16_t (*altcp_mss_fn)(struct altcp_pcb *conn); 74typedef u16_t (*altcp_sndbuf_fn)(struct altcp_pcb *conn); 75typedef u16_t (*altcp_sndqueuelen_fn)(struct altcp_pcb *conn); 76typedef void (*altcp_nagle_disable_fn)(struct altcp_pcb *conn); 77typedef void (*altcp_nagle_enable_fn)(struct altcp_pcb *conn); 78typedef int (*altcp_nagle_disabled_fn)(struct altcp_pcb *conn); 79 80typedef void (*altcp_setprio_fn)(struct altcp_pcb *conn, u8_t prio); 81 82typedef void (*altcp_dealloc_fn)(struct altcp_pcb *conn); 83 84typedef err_t (*altcp_get_tcp_addrinfo_fn)(struct altcp_pcb *conn, int local, ip_addr_t *addr, u16_t *port); 85typedef ip_addr_t *(*altcp_get_ip_fn)(struct altcp_pcb *conn, int local); 86typedef u16_t (*altcp_get_port_fn)(struct altcp_pcb *conn, int local); 87 88#ifdef LWIP_DEBUG 89typedef enum tcp_state (*altcp_dbg_get_tcp_state_fn)(struct altcp_pcb *conn); 90#endif 91 92struct altcp_functions { 93 altcp_set_poll_fn set_poll; 94 altcp_recved_fn recved; 95 altcp_bind_fn bind; 96 altcp_connect_fn connect; 97 altcp_listen_fn listen; 98 altcp_abort_fn abort; 99 altcp_close_fn close; 100 altcp_shutdown_fn shutdown; 101 altcp_write_fn write; 102 altcp_output_fn output; 103 altcp_mss_fn mss; 104 altcp_sndbuf_fn sndbuf; 105 altcp_sndqueuelen_fn sndqueuelen; 106 altcp_nagle_disable_fn nagle_disable; 107 altcp_nagle_enable_fn nagle_enable; 108 altcp_nagle_disabled_fn nagle_disabled; 109 altcp_setprio_fn setprio; 110 altcp_dealloc_fn dealloc; 111 altcp_get_tcp_addrinfo_fn addrinfo; 112 altcp_get_ip_fn getip; 113 altcp_get_port_fn getport; 114#ifdef LWIP_DEBUG 115 altcp_dbg_get_tcp_state_fn dbg_get_tcp_state; 116#endif 117}; 118 119void altcp_default_set_poll(struct altcp_pcb *conn, u8_t interval); 120void altcp_default_recved(struct altcp_pcb *conn, u16_t len); 121err_t altcp_default_bind(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port); 122err_t altcp_default_shutdown(struct altcp_pcb *conn, int shut_rx, int shut_tx); 123err_t altcp_default_write(struct altcp_pcb *conn, const void *dataptr, u16_t len, u8_t apiflags); 124err_t altcp_default_output(struct altcp_pcb *conn); 125u16_t altcp_default_mss(struct altcp_pcb *conn); 126u16_t altcp_default_sndbuf(struct altcp_pcb *conn); 127u16_t altcp_default_sndqueuelen(struct altcp_pcb *conn); 128void altcp_default_nagle_disable(struct altcp_pcb *conn); 129void altcp_default_nagle_enable(struct altcp_pcb *conn); 130int altcp_default_nagle_disabled(struct altcp_pcb *conn); 131void altcp_default_setprio(struct altcp_pcb *conn, u8_t prio); 132void altcp_default_dealloc(struct altcp_pcb *conn); 133err_t altcp_default_get_tcp_addrinfo(struct altcp_pcb *conn, int local, ip_addr_t *addr, u16_t *port); 134ip_addr_t *altcp_default_get_ip(struct altcp_pcb *conn, int local); 135u16_t altcp_default_get_port(struct altcp_pcb *conn, int local); 136#ifdef LWIP_DEBUG 137enum tcp_state altcp_default_dbg_get_tcp_state(struct altcp_pcb *conn); 138#endif 139 140#ifdef __cplusplus 141} 142#endif 143 144#endif /* LWIP_ALTCP */ 145 146#endif /* LWIP_HDR_ALTCP_PRIV_H */ 147