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94 lines
2.2 KiB
94 lines
2.2 KiB
/*
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* udprelay.h - Define UDP relay's buffers and callbacks
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*
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* Copyright (C) 2013 - 2017, Max Lv <max.c.lv@gmail.com>
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*
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* This file is part of the shadowsocks-libev.
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*
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* shadowsocks-libev is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* shadowsocks-libev is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with shadowsocks-libev; see the file COPYING. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#ifndef _UDPRELAY_H
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#define _UDPRELAY_H
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#include <time.h>
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#ifdef HAVE_LIBEV_EV_H
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#include <libev/ev.h>
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#else
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#include <ev.h>
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#endif
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#include "crypto.h"
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#include "jconf.h"
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#ifdef MODULE_REMOTE
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#include "resolv.h"
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#endif
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#include "cache.h"
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#include "common.h"
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#define MAX_UDP_PACKET_SIZE (65507)
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#define DEFAULT_PACKET_SIZE 1397 // 1492 - 1 - 28 - 2 - 64 = 1397, the default MTU for UDP relay
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typedef struct server_ctx {
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ev_io io;
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int fd;
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crypto_t *crypto;
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int timeout;
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const char *iface;
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struct cache *conn_cache;
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#ifdef MODULE_LOCAL
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const struct sockaddr *remote_addr;
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int remote_addr_len;
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#ifdef MODULE_TUNNEL
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ss_addr_t tunnel_addr;
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#endif
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#endif
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#ifdef MODULE_REMOTE
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struct ev_loop *loop;
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#endif
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} server_ctx_t;
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#ifdef MODULE_REMOTE
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typedef struct query_ctx {
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struct ResolvQuery *query;
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struct sockaddr_storage src_addr;
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buffer_t *buf;
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int addr_header_len;
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char addr_header[384];
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struct server_ctx *server_ctx;
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struct remote_ctx *remote_ctx;
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} query_ctx_t;
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#endif
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typedef struct remote_ctx {
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ev_io io;
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ev_timer watcher;
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int af;
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int fd;
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int addr_header_len;
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char addr_header[384];
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struct sockaddr_storage src_addr;
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#ifdef MODULE_REMOTE
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struct sockaddr_storage dst_addr;
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#endif
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struct server_ctx *server_ctx;
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} remote_ctx_t;
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#endif // _UDPRELAY_H
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