/****************************************************************************** * Copyright (c) Transmission authors and contributors * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. *****************************************************************************/ #pragma once #ifndef __TRANSMISSION__ #error only libtransmission should #include this header. #endif #ifdef _WIN32 #include #include #else #include #include #include #endif #include "tr-macros.h" TR_BEGIN_DECLS #ifdef _WIN32 typedef SOCKET tr_socket_t; #define TR_BAD_SOCKET INVALID_SOCKET #undef EADDRINUSE #define EADDRINUSE WSAEADDRINUSE #undef ECONNREFUSED #define ECONNREFUSED WSAECONNREFUSED #undef ECONNRESET #define ECONNRESET WSAECONNRESET #undef EHOSTUNREACH #define EHOSTUNREACH WSAEHOSTUNREACH #undef EINPROGRESS #define EINPROGRESS WSAEINPROGRESS #undef ENOTCONN #define ENOTCONN WSAENOTCONN #undef EWOULDBLOCK #define EWOULDBLOCK WSAEWOULDBLOCK #undef EAFNOSUPPORT #define EAFNOSUPPORT WSAEAFNOSUPPORT #undef ENETUNREACH #define ENETUNREACH WSAENETUNREACH #define sockerrno WSAGetLastError() #else /** @brief Platform-specific socket descriptor type. */ typedef int tr_socket_t; /** @brief Platform-specific invalid socket descriptor constant. */ #define TR_BAD_SOCKET (-1) #define sockerrno errno #endif /**** ***** ***** tr_address ***** ****/ typedef enum tr_address_type { TR_AF_INET, TR_AF_INET6, NUM_TR_AF_INET_TYPES } tr_address_type; typedef struct tr_address { tr_address_type type; union { struct in6_addr addr6; struct in_addr addr4; } addr; } tr_address; extern tr_address const tr_inaddr_any; extern tr_address const tr_in6addr_any; char const* tr_address_to_string(tr_address const* addr); char const* tr_address_to_string_with_buf(tr_address const* addr, char* buf, size_t buflen); bool tr_address_from_string(tr_address* setme, char const* string); bool tr_address_from_sockaddr_storage(tr_address* setme, tr_port* port, struct sockaddr_storage const* src); int tr_address_compare(tr_address const* a, tr_address const* b); bool tr_address_is_valid_for_peers(tr_address const* addr, tr_port port); static inline bool tr_address_is_valid(tr_address const* a) { return a != NULL && (a->type == TR_AF_INET || a->type == TR_AF_INET6); } /*********************************************************************** * Sockets **********************************************************************/ /* https://en.wikipedia.org/wiki/Differentiated_services#Class_Selector */ enum { TR_IPTOS_LOWCOST = 0x38, /* AF13: low prio, high drop */ TR_IPTOS_LOWDELAY = 0x70, /* AF32: high prio, mid drop */ TR_IPTOS_THRUPUT = 0x20, /* CS1: low prio, undef drop */ TR_IPTOS_RELIABLE = 0x28 /* AF11: low prio, low drop */ }; struct tr_session; tr_socket_t tr_netBindTCP(tr_address const* addr, tr_port port, bool suppressMsgs); tr_socket_t tr_netAccept(tr_session* session, tr_socket_t bound, tr_address* setme_addr, tr_port* setme_port); void tr_netSetTOS(tr_socket_t s, int tos, tr_address_type type); void tr_netSetCongestionControl(tr_socket_t s, char const* algorithm); void tr_netClose(tr_session* session, tr_socket_t s); void tr_netCloseSocket(tr_socket_t fd); bool tr_net_hasIPv6(tr_port); /** * @brief get a human-representable string representing the network error. * @param err an errno on Unix/Linux and an WSAError on win32) */ char* tr_net_strerror(char* buf, size_t buflen, int err); unsigned char const* tr_globalIPv6(void); TR_END_DECLS