Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2004-2023 Savoir-faire Linux Inc. |
| 3 | * |
Adrien Béraud | cb75362 | 2023-07-17 22:32:49 -0400 | [diff] [blame] | 4 | * This program is free software: you can redistribute it and/or modify |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 5 | * it under the terms of the GNU General Public License as published by |
Adrien Béraud | cb75362 | 2023-07-17 22:32:49 -0400 | [diff] [blame] | 6 | * the Free Software Foundation, either version 3 of the License, or |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
Adrien Béraud | cb75362 | 2023-07-17 22:32:49 -0400 | [diff] [blame] | 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
Adrien Béraud | cb75362 | 2023-07-17 22:32:49 -0400 | [diff] [blame] | 15 | * along with this program. If not, see <https://www.gnu.org/licenses/>. |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 16 | */ |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 17 | #include "ice_transport.h" |
Adrien Béraud | 6de3f88 | 2023-07-06 12:56:29 -0400 | [diff] [blame] | 18 | #include "ice_transport_factory.h" |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 19 | #include "ice_socket.h" |
| 20 | #include "sip_utils.h" |
| 21 | #include "string_utils.h" |
| 22 | #include "upnp/upnp_control.h" |
| 23 | #include "transport/peer_channel.h" |
| 24 | #include "tracepoint/tracepoint.h" |
| 25 | |
| 26 | #include <opendht/logger.h> |
| 27 | #include <opendht/utils.h> |
| 28 | |
Adrien Béraud | 9e0f84f | 2023-07-27 16:02:21 -0400 | [diff] [blame] | 29 | extern "C" { |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 30 | #include <pjlib.h> |
Adrien Béraud | 9e0f84f | 2023-07-27 16:02:21 -0400 | [diff] [blame] | 31 | } |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 32 | |
| 33 | #include <map> |
| 34 | #include <atomic> |
| 35 | #include <queue> |
| 36 | #include <mutex> |
| 37 | #include <condition_variable> |
| 38 | #include <thread> |
| 39 | #include <utility> |
| 40 | #include <tuple> |
| 41 | #include <algorithm> |
| 42 | #include <sstream> |
| 43 | #include <chrono> |
Adrien Béraud | 67ff077 | 2023-07-12 11:22:29 -0400 | [diff] [blame] | 44 | #include <memory> |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 45 | #include <cerrno> |
| 46 | |
| 47 | #include "pj/limits.h" |
| 48 | |
| 49 | #define TRY(ret) \ |
| 50 | do { \ |
| 51 | if ((ret) != PJ_SUCCESS) \ |
| 52 | throw std::runtime_error(#ret " failed"); \ |
| 53 | } while (0) |
| 54 | |
| 55 | // Validate that the component ID is within the expected range |
| 56 | #define ASSERT_COMP_ID(compId, compCount) \ |
| 57 | do { \ |
| 58 | if ((compId) == 0 or (compId) > (compCount)) \ |
| 59 | throw std::runtime_error("Invalid component ID " + (std::to_string(compId))); \ |
| 60 | } while (0) |
| 61 | |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 62 | namespace dhtnet { |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 63 | |
| 64 | static constexpr unsigned STUN_MAX_PACKET_SIZE {8192}; |
| 65 | static constexpr uint16_t IPV6_HEADER_SIZE = 40; ///< Size in bytes of IPV6 packet header |
| 66 | static constexpr uint16_t IPV4_HEADER_SIZE = 20; ///< Size in bytes of IPV4 packet header |
| 67 | static constexpr int MAX_CANDIDATES {32}; |
| 68 | static constexpr int MAX_DESTRUCTION_TIMEOUT {3000}; |
| 69 | static constexpr int HANDLE_EVENT_DURATION {500}; |
| 70 | |
| 71 | //============================================================================== |
| 72 | |
| 73 | using MutexGuard = std::lock_guard<std::mutex>; |
| 74 | using MutexLock = std::unique_lock<std::mutex>; |
| 75 | using namespace upnp; |
| 76 | |
| 77 | //============================================================================== |
| 78 | |
| 79 | class IceLock |
| 80 | { |
| 81 | pj_grp_lock_t* lk_; |
| 82 | |
| 83 | public: |
| 84 | IceLock(pj_ice_strans* strans) |
| 85 | : lk_(pj_ice_strans_get_grp_lock(strans)) |
| 86 | { |
| 87 | lock(); |
| 88 | } |
| 89 | |
| 90 | ~IceLock() { unlock(); } |
| 91 | |
| 92 | void lock() { if (lk_) pj_grp_lock_acquire(lk_); } |
| 93 | |
| 94 | void unlock() { if (lk_) pj_grp_lock_release(lk_); } |
| 95 | }; |
| 96 | |
| 97 | class IceTransport::Impl |
| 98 | { |
| 99 | public: |
Adrien Béraud | 89933c1 | 2023-07-26 14:53:30 -0400 | [diff] [blame] | 100 | Impl(std::string_view name, const std::shared_ptr<Logger>& logger); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 101 | ~Impl(); |
| 102 | |
| 103 | void initIceInstance(const IceTransportOptions& options); |
| 104 | |
| 105 | void onComplete(pj_ice_strans* ice_st, pj_ice_strans_op op, pj_status_t status); |
| 106 | |
| 107 | void onReceiveData(unsigned comp_id, void* pkt, pj_size_t size); |
| 108 | |
| 109 | /** |
| 110 | * Set/change transport role as initiator. |
| 111 | * Should be called before start method. |
| 112 | */ |
| 113 | bool setInitiatorSession(); |
| 114 | |
| 115 | /** |
| 116 | * Set/change transport role as slave. |
| 117 | * Should be called before start method. |
| 118 | */ |
| 119 | bool setSlaveSession(); |
| 120 | bool createIceSession(pj_ice_sess_role role); |
| 121 | |
| 122 | void getUFragPwd(); |
| 123 | |
| 124 | std::string link() const; |
| 125 | |
| 126 | bool _isInitialized() const; |
| 127 | bool _isStarted() const; |
| 128 | bool _isRunning() const; |
| 129 | bool _isFailed() const; |
| 130 | bool _waitForInitialization(std::chrono::milliseconds timeout); |
| 131 | |
| 132 | const pj_ice_sess_cand* getSelectedCandidate(unsigned comp_id, bool remote) const; |
| 133 | IpAddr getLocalAddress(unsigned comp_id) const; |
| 134 | IpAddr getRemoteAddress(unsigned comp_id) const; |
| 135 | static const char* getCandidateType(const pj_ice_sess_cand* cand); |
| 136 | bool isTcpEnabled() const { return config_.protocol == PJ_ICE_TP_TCP; } |
| 137 | bool addStunConfig(int af); |
| 138 | void requestUpnpMappings(); |
| 139 | bool hasUpnp() const; |
| 140 | // Take a list of address pairs (local/public) and add them as |
| 141 | // reflexive candidates using STUN config. |
| 142 | void addServerReflexiveCandidates(const std::vector<std::pair<IpAddr, IpAddr>>& addrList); |
| 143 | // Generate server reflexive candidates using the published (DHT/Account) address |
| 144 | std::vector<std::pair<IpAddr, IpAddr>> setupGenericReflexiveCandidates(); |
| 145 | // Generate server reflexive candidates using UPNP mappings. |
| 146 | std::vector<std::pair<IpAddr, IpAddr>> setupUpnpReflexiveCandidates(); |
| 147 | void setDefaultRemoteAddress(unsigned comp_id, const IpAddr& addr); |
| 148 | IpAddr getDefaultRemoteAddress(unsigned comp_id) const; |
| 149 | bool handleEvents(unsigned max_msec); |
| 150 | int flushTimerHeapAndIoQueue(); |
| 151 | int checkEventQueue(int maxEventToPoll); |
| 152 | |
| 153 | std::shared_ptr<dht::log::Logger> logger_ {}; |
Amna | 81221ad | 2023-09-14 17:33:26 -0400 | [diff] [blame] | 154 | std::shared_ptr<dhtnet::IceTransportFactory> factory {}; |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 155 | |
| 156 | std::condition_variable_any iceCV_ {}; |
| 157 | |
| 158 | std::string sessionName_ {}; |
| 159 | std::unique_ptr<pj_pool_t, decltype(&pj_pool_release)> pool_ {nullptr, pj_pool_release}; |
| 160 | bool isTcp_ {false}; |
| 161 | bool upnpEnabled_ {false}; |
| 162 | IceTransportCompleteCb on_initdone_cb_ {}; |
| 163 | IceTransportCompleteCb on_negodone_cb_ {}; |
| 164 | pj_ice_strans* icest_ {nullptr}; |
| 165 | unsigned streamsCount_ {0}; |
| 166 | unsigned compCountPerStream_ {0}; |
| 167 | unsigned compCount_ {0}; |
| 168 | std::string local_ufrag_ {}; |
| 169 | std::string local_pwd_ {}; |
| 170 | pj_sockaddr remoteAddr_ {}; |
| 171 | pj_ice_strans_cfg config_ {}; |
| 172 | //std::string last_errmsg_ {}; |
| 173 | |
| 174 | std::atomic_bool is_stopped_ {false}; |
| 175 | |
Adrien Béraud | 21d5f46 | 2023-08-27 12:06:21 -0400 | [diff] [blame] | 176 | using Packet = std::vector<uint8_t>; |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 177 | |
| 178 | struct ComponentIO |
| 179 | { |
| 180 | std::mutex mutex; |
| 181 | std::condition_variable cv; |
| 182 | std::deque<Packet> queue; |
| 183 | IceRecvCb recvCb; |
| 184 | }; |
| 185 | |
| 186 | // NOTE: Component IDs start from 1, while these three vectors |
| 187 | // are indexed from 0. Conversion from ID to vector index must |
| 188 | // be done properly. |
| 189 | std::vector<ComponentIO> compIO_ {}; |
| 190 | std::vector<PeerChannel> peerChannels_ {}; |
| 191 | std::vector<IpAddr> iceDefaultRemoteAddr_; |
| 192 | |
| 193 | // ICE controlling role. True for controller agents and false for |
| 194 | // controlled agents |
| 195 | std::atomic_bool initiatorSession_ {true}; |
| 196 | |
| 197 | // Local/Public addresses used by the account owning the ICE instance. |
| 198 | IpAddr accountLocalAddr_ {}; |
| 199 | IpAddr accountPublicAddr_ {}; |
| 200 | |
| 201 | // STUN and TURN servers |
| 202 | std::vector<StunServerInfo> stunServers_; |
| 203 | std::vector<TurnServerInfo> turnServers_; |
| 204 | |
| 205 | /** |
| 206 | * Returns the IP of each candidate for a given component in the ICE session |
| 207 | */ |
| 208 | struct LocalCandidate |
| 209 | { |
| 210 | IpAddr addr; |
| 211 | pj_ice_cand_transport transport; |
| 212 | }; |
| 213 | |
| 214 | std::shared_ptr<upnp::Controller> upnp_ {}; |
| 215 | std::mutex upnpMutex_ {}; |
| 216 | std::map<Mapping::key_t, Mapping> upnpMappings_; |
| 217 | std::mutex upnpMappingsMutex_ {}; |
| 218 | |
| 219 | bool onlyIPv4Private_ {true}; |
| 220 | |
| 221 | // IO/Timer events are handled by following thread |
| 222 | std::thread thread_ {}; |
| 223 | std::atomic_bool threadTerminateFlags_ {false}; |
| 224 | |
| 225 | // Wait data on components |
| 226 | mutable std::mutex sendDataMutex_ {}; |
| 227 | std::condition_variable waitDataCv_ = {}; |
| 228 | pj_size_t lastSentLen_ {0}; |
| 229 | bool destroying_ {false}; |
| 230 | onShutdownCb scb {}; |
| 231 | |
| 232 | void cancelOperations() |
| 233 | { |
| 234 | for (auto& c : peerChannels_) |
| 235 | c.stop(); |
| 236 | std::lock_guard<std::mutex> lk(sendDataMutex_); |
| 237 | destroying_ = true; |
| 238 | waitDataCv_.notify_all(); |
| 239 | } |
| 240 | }; |
| 241 | |
| 242 | //============================================================================== |
| 243 | |
| 244 | /** |
| 245 | * Add stun/turn configuration or default host as candidates |
| 246 | */ |
| 247 | |
| 248 | static void |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 249 | add_stun_server(pj_pool_t& pool, pj_ice_strans_cfg& cfg, const StunServerInfo& info, const std::shared_ptr<dht::log::Logger>& logger) |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 250 | { |
| 251 | if (cfg.stun_tp_cnt >= PJ_ICE_MAX_STUN) |
| 252 | throw std::runtime_error("Too many STUN configurations"); |
| 253 | |
| 254 | IpAddr ip {info.uri}; |
| 255 | |
| 256 | // Given URI cannot be DNS resolved or not IPv4 or IPv6? |
| 257 | // This prevents a crash into PJSIP when ip.toString() is called. |
| 258 | if (ip.getFamily() == AF_UNSPEC) { |
| 259 | /*JAMI_DBG("[ice (%s)] STUN server '%s' not used, unresolvable address", |
| 260 | (cfg.protocol == PJ_ICE_TP_TCP ? "TCP" : "UDP"), |
| 261 | info.uri.c_str());*/ |
| 262 | return; |
| 263 | } |
| 264 | |
| 265 | auto& stun = cfg.stun_tp[cfg.stun_tp_cnt++]; |
| 266 | pj_ice_strans_stun_cfg_default(&stun); |
| 267 | pj_strdup2_with_null(&pool, &stun.server, ip.toString().c_str()); |
| 268 | stun.af = ip.getFamily(); |
| 269 | if (!(stun.port = ip.getPort())) |
| 270 | stun.port = PJ_STUN_PORT; |
| 271 | stun.cfg.max_pkt_size = STUN_MAX_PACKET_SIZE; |
| 272 | stun.conn_type = cfg.stun.conn_type; |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 273 | if (logger) |
| 274 | logger->debug("added stun server '{}', port {}", pj_strbuf(&stun.server), stun.port); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 275 | } |
| 276 | |
| 277 | static void |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 278 | add_turn_server(pj_pool_t& pool, pj_ice_strans_cfg& cfg, const TurnServerInfo& info, const std::shared_ptr<dht::log::Logger>& logger) |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 279 | { |
| 280 | if (cfg.turn_tp_cnt >= PJ_ICE_MAX_TURN) |
| 281 | throw std::runtime_error("Too many TURN servers"); |
| 282 | |
| 283 | IpAddr ip {info.uri}; |
| 284 | |
| 285 | // Same comment as add_stun_server() |
| 286 | if (ip.getFamily() == AF_UNSPEC) { |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 287 | if (logger) |
| 288 | logger->debug("TURN server '{}' not used, unresolvable address", info.uri); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 289 | return; |
| 290 | } |
| 291 | |
| 292 | auto& turn = cfg.turn_tp[cfg.turn_tp_cnt++]; |
| 293 | pj_ice_strans_turn_cfg_default(&turn); |
| 294 | pj_strdup2_with_null(&pool, &turn.server, ip.toString().c_str()); |
| 295 | turn.af = ip.getFamily(); |
| 296 | if (!(turn.port = ip.getPort())) |
| 297 | turn.port = PJ_STUN_PORT; |
| 298 | turn.cfg.max_pkt_size = STUN_MAX_PACKET_SIZE; |
| 299 | turn.conn_type = cfg.turn.conn_type; |
| 300 | |
| 301 | // Authorization (only static plain password supported yet) |
| 302 | if (not info.password.empty()) { |
| 303 | turn.auth_cred.type = PJ_STUN_AUTH_CRED_STATIC; |
| 304 | turn.auth_cred.data.static_cred.data_type = PJ_STUN_PASSWD_PLAIN; |
| 305 | pj_strset(&turn.auth_cred.data.static_cred.realm, |
| 306 | (char*) info.realm.c_str(), |
| 307 | info.realm.size()); |
| 308 | pj_strset(&turn.auth_cred.data.static_cred.username, |
| 309 | (char*) info.username.c_str(), |
| 310 | info.username.size()); |
| 311 | pj_strset(&turn.auth_cred.data.static_cred.data, |
| 312 | (char*) info.password.c_str(), |
| 313 | info.password.size()); |
| 314 | } |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 315 | if (logger) |
| 316 | logger->debug("added turn server '{}', port {}", pj_strbuf(&turn.server), turn.port); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 317 | } |
| 318 | |
| 319 | //============================================================================== |
| 320 | |
Adrien Béraud | 89933c1 | 2023-07-26 14:53:30 -0400 | [diff] [blame] | 321 | IceTransport::Impl::Impl(std::string_view name, const std::shared_ptr<Logger>& logger) |
| 322 | : logger_(logger), sessionName_(name) |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 323 | { |
| 324 | if (logger_) |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 325 | logger_->debug("[ice:{}] Creating IceTransport session for \"{:s}\"", fmt::ptr(this), sessionName_); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 326 | } |
| 327 | |
| 328 | IceTransport::Impl::~Impl() |
| 329 | { |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 330 | threadTerminateFlags_ = true; |
| 331 | |
| 332 | if (thread_.joinable()) { |
| 333 | thread_.join(); |
| 334 | } |
| 335 | |
| 336 | if (icest_) { |
| 337 | pj_ice_strans* strans = nullptr; |
| 338 | |
| 339 | std::swap(strans, icest_); |
| 340 | |
| 341 | // must be done before ioqueue/timer destruction |
| 342 | if (logger_) |
| 343 | logger_->debug("[ice:{}] Destroying ice_strans {}", pj_ice_strans_get_user_data(strans), fmt::ptr(strans)); |
| 344 | |
| 345 | pj_ice_strans_stop_ice(strans); |
| 346 | pj_ice_strans_destroy(strans); |
| 347 | |
| 348 | // NOTE: This last timer heap and IO queue polling is necessary to close |
| 349 | // TURN socket. |
| 350 | // Because when destroying the TURN session pjproject creates a pj_timer |
| 351 | // to postpone the TURN destruction. This timer is only called if we poll |
| 352 | // the event queue. |
| 353 | |
| 354 | int ret = flushTimerHeapAndIoQueue(); |
| 355 | |
| 356 | if (ret < 0) { |
| 357 | if (logger_) |
| 358 | logger_->error("[ice:{}] IO queue polling failed", fmt::ptr(this)); |
| 359 | } else if (ret > 0) { |
| 360 | if (logger_) |
| 361 | logger_->error("[ice:{}] Unexpected left timer in timer heap. " |
| 362 | "Please report the bug", |
| 363 | fmt::ptr(this)); |
| 364 | } |
| 365 | |
| 366 | if (checkEventQueue(1) > 0) { |
| 367 | if (logger_) |
| 368 | logger_->warn("[ice:{}] Unexpected left events in IO queue", fmt::ptr(this)); |
| 369 | } |
| 370 | |
| 371 | if (config_.stun_cfg.ioqueue) |
| 372 | pj_ioqueue_destroy(config_.stun_cfg.ioqueue); |
| 373 | |
| 374 | if (config_.stun_cfg.timer_heap) |
| 375 | pj_timer_heap_destroy(config_.stun_cfg.timer_heap); |
| 376 | } |
| 377 | |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 378 | if (scb) |
| 379 | scb(); |
| 380 | } |
| 381 | |
| 382 | void |
| 383 | IceTransport::Impl::initIceInstance(const IceTransportOptions& options) |
| 384 | { |
Amna | 81221ad | 2023-09-14 17:33:26 -0400 | [diff] [blame] | 385 | factory = options.factory; |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 386 | isTcp_ = options.tcpEnable; |
| 387 | upnpEnabled_ = options.upnpEnable; |
| 388 | on_initdone_cb_ = options.onInitDone; |
| 389 | on_negodone_cb_ = options.onNegoDone; |
| 390 | streamsCount_ = options.streamsCount; |
| 391 | compCountPerStream_ = options.compCountPerStream; |
| 392 | compCount_ = streamsCount_ * compCountPerStream_; |
| 393 | compIO_ = std::vector<ComponentIO>(compCount_); |
| 394 | peerChannels_ = std::vector<PeerChannel>(compCount_); |
| 395 | iceDefaultRemoteAddr_.resize(compCount_); |
| 396 | initiatorSession_ = options.master; |
| 397 | accountLocalAddr_ = std::move(options.accountLocalAddr); |
| 398 | accountPublicAddr_ = std::move(options.accountPublicAddr); |
| 399 | stunServers_ = std::move(options.stunServers); |
| 400 | turnServers_ = std::move(options.turnServers); |
| 401 | |
| 402 | if (logger_) |
| 403 | logger_->debug("[ice:{}] Initializing the session - comp count {} - as a {}", |
| 404 | fmt::ptr(this), |
| 405 | compCount_, |
| 406 | initiatorSession_ ? "master" : "slave"); |
| 407 | |
Sébastien Blin | 21cbcfe | 2023-10-24 14:45:58 -0400 | [diff] [blame] | 408 | if (upnpEnabled_) { |
| 409 | if (options.upnpContext) { |
| 410 | upnp_ = std::make_shared<upnp::Controller>(options.upnpContext); |
| 411 | } else if (logger_) { |
| 412 | logger_->error("[ice:{}] UPnP enabled, but no context found", fmt::ptr(this)); |
| 413 | } |
| 414 | } |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 415 | |
Amna | 81221ad | 2023-09-14 17:33:26 -0400 | [diff] [blame] | 416 | config_ = factory->getIceCfg(); // config copy |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 417 | if (isTcp_) { |
| 418 | config_.protocol = PJ_ICE_TP_TCP; |
| 419 | config_.stun.conn_type = PJ_STUN_TP_TCP; |
| 420 | config_.turn.conn_type = PJ_TURN_TP_TCP; |
| 421 | } else { |
| 422 | config_.protocol = PJ_ICE_TP_UDP; |
| 423 | config_.stun.conn_type = PJ_STUN_TP_UDP; |
| 424 | config_.turn.conn_type = PJ_TURN_TP_UDP; |
| 425 | } |
Adrien Béraud | 738aedb | 2024-02-18 14:56:26 -0500 | [diff] [blame] | 426 | if (options.qosType.size() == 1) { |
| 427 | config_.stun.cfg.qos_type = (pj_qos_type)options.qosType[0]; |
| 428 | config_.turn.cfg.qos_type = (pj_qos_type)options.qosType[0]; |
| 429 | } |
| 430 | if (options.qosType.size() == compCount_) { |
| 431 | for (unsigned i = 0; i < compCount_; ++i) { |
| 432 | config_.comp[i].qos_type = (pj_qos_type)(options.qosType[i]); |
| 433 | } |
| 434 | } |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 435 | |
| 436 | pool_.reset( |
Amna | 81221ad | 2023-09-14 17:33:26 -0400 | [diff] [blame] | 437 | pj_pool_create(factory->getPoolFactory(), "IceTransport.pool", 512, 512, NULL)); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 438 | if (not pool_) |
| 439 | throw std::runtime_error("pj_pool_create() failed"); |
| 440 | |
| 441 | // Note: For server reflexive candidates, UPNP mappings will |
| 442 | // be used if available. Then, the public address learnt during |
| 443 | // the account registration process will be added only if it |
| 444 | // differs from the UPNP public address. |
| 445 | // Also note that UPNP candidates should be added first in order |
| 446 | // to have a higher priority when performing the connectivity |
| 447 | // checks. |
| 448 | // STUN configs layout: |
| 449 | // - index 0 : host IPv4 |
| 450 | // - index 1 : host IPv6 |
| 451 | // - index 2 : upnp/generic srflx IPv4. |
| 452 | // - index 3 : generic srflx (if upnp exists and different) |
| 453 | |
| 454 | config_.stun_tp_cnt = 0; |
| 455 | |
Adrien Béraud | 370257c | 2023-08-15 20:53:09 -0400 | [diff] [blame] | 456 | // if (logger_) |
| 457 | // logger_->debug("[ice:{}] Add host candidates", fmt::ptr(this)); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 458 | addStunConfig(pj_AF_INET()); |
| 459 | addStunConfig(pj_AF_INET6()); |
| 460 | |
| 461 | std::vector<std::pair<IpAddr, IpAddr>> upnpSrflxCand; |
| 462 | if (upnp_) { |
| 463 | requestUpnpMappings(); |
| 464 | upnpSrflxCand = setupUpnpReflexiveCandidates(); |
| 465 | if (not upnpSrflxCand.empty()) { |
| 466 | addServerReflexiveCandidates(upnpSrflxCand); |
Adrien Béraud | 370257c | 2023-08-15 20:53:09 -0400 | [diff] [blame] | 467 | // if (logger_) |
| 468 | // logger_->debug("[ice:{}] Added UPNP srflx candidates:", fmt::ptr(this)); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 469 | } |
| 470 | } |
| 471 | |
| 472 | auto genericSrflxCand = setupGenericReflexiveCandidates(); |
| 473 | |
| 474 | if (not genericSrflxCand.empty()) { |
| 475 | // Generic srflx candidates will be added only if different |
| 476 | // from upnp candidates. |
| 477 | if (upnpSrflxCand.empty() |
| 478 | or (upnpSrflxCand[0].second.toString() != genericSrflxCand[0].second.toString())) { |
| 479 | addServerReflexiveCandidates(genericSrflxCand); |
Adrien Béraud | 370257c | 2023-08-15 20:53:09 -0400 | [diff] [blame] | 480 | // if (logger_) |
| 481 | // logger_->debug("[ice:{}] Added generic srflx candidates:", fmt::ptr(this)); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 482 | } |
| 483 | } |
| 484 | |
| 485 | if (upnpSrflxCand.empty() and genericSrflxCand.empty()) { |
| 486 | if (logger_) |
| 487 | logger_->warn("[ice:{}] No server reflexive candidates added", fmt::ptr(this)); |
| 488 | } |
| 489 | |
| 490 | pj_ice_strans_cb icecb; |
| 491 | pj_bzero(&icecb, sizeof(icecb)); |
| 492 | |
| 493 | icecb.on_rx_data = [](pj_ice_strans* ice_st, |
| 494 | unsigned comp_id, |
| 495 | void* pkt, |
| 496 | pj_size_t size, |
| 497 | const pj_sockaddr_t* /*src_addr*/, |
| 498 | unsigned /*src_addr_len*/) { |
| 499 | if (auto* tr = static_cast<Impl*>(pj_ice_strans_get_user_data(ice_st))) |
| 500 | tr->onReceiveData(comp_id, pkt, size); |
| 501 | }; |
| 502 | |
| 503 | icecb.on_ice_complete = [](pj_ice_strans* ice_st, pj_ice_strans_op op, pj_status_t status) { |
| 504 | if (auto* tr = static_cast<Impl*>(pj_ice_strans_get_user_data(ice_st))) |
| 505 | tr->onComplete(ice_st, op, status); |
| 506 | }; |
| 507 | |
| 508 | if (isTcp_) { |
| 509 | icecb.on_data_sent = [](pj_ice_strans* ice_st, pj_ssize_t size) { |
| 510 | if (auto* tr = static_cast<Impl*>(pj_ice_strans_get_user_data(ice_st))) { |
| 511 | std::lock_guard lk(tr->sendDataMutex_); |
| 512 | tr->lastSentLen_ += size; |
| 513 | tr->waitDataCv_.notify_all(); |
| 514 | } |
| 515 | }; |
| 516 | } |
| 517 | |
| 518 | icecb.on_destroy = [](pj_ice_strans* ice_st) { |
| 519 | if (auto* tr = static_cast<Impl*>(pj_ice_strans_get_user_data(ice_st))) |
| 520 | tr->cancelOperations(); // Avoid upper layer to manage this ; Stop read operations |
| 521 | }; |
| 522 | |
| 523 | // Add STUN servers |
| 524 | for (auto& server : stunServers_) |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 525 | add_stun_server(*pool_, config_, server, logger_); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 526 | |
| 527 | // Add TURN servers |
| 528 | for (auto& server : turnServers_) |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 529 | add_turn_server(*pool_, config_, server, logger_); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 530 | |
| 531 | static constexpr auto IOQUEUE_MAX_HANDLES = std::min(PJ_IOQUEUE_MAX_HANDLES, 64); |
| 532 | TRY(pj_timer_heap_create(pool_.get(), 100, &config_.stun_cfg.timer_heap)); |
| 533 | TRY(pj_ioqueue_create(pool_.get(), IOQUEUE_MAX_HANDLES, &config_.stun_cfg.ioqueue)); |
| 534 | std::ostringstream sessionName {}; |
| 535 | // We use the instance pointer as the PJNATH session name in order |
| 536 | // to easily identify the logs reported by PJNATH. |
| 537 | sessionName << this; |
| 538 | pj_status_t status = pj_ice_strans_create(sessionName.str().c_str(), |
| 539 | &config_, |
| 540 | compCount_, |
| 541 | this, |
| 542 | &icecb, |
| 543 | &icest_); |
| 544 | |
| 545 | if (status != PJ_SUCCESS || icest_ == nullptr) { |
| 546 | throw std::runtime_error("pj_ice_strans_create() failed"); |
| 547 | } |
| 548 | |
| 549 | // Must be created after any potential failure |
| 550 | thread_ = std::thread([this] { |
| 551 | while (not threadTerminateFlags_) { |
| 552 | // NOTE: handleEvents can return false in this case |
| 553 | // but here we don't care if there is event or not. |
| 554 | handleEvents(HANDLE_EVENT_DURATION); |
| 555 | } |
| 556 | }); |
| 557 | } |
| 558 | |
| 559 | bool |
| 560 | IceTransport::Impl::_isInitialized() const |
| 561 | { |
| 562 | if (auto *icest = icest_) { |
| 563 | auto state = pj_ice_strans_get_state(icest); |
| 564 | return state >= PJ_ICE_STRANS_STATE_SESS_READY and state != PJ_ICE_STRANS_STATE_FAILED; |
| 565 | } |
| 566 | return false; |
| 567 | } |
| 568 | |
| 569 | bool |
| 570 | IceTransport::Impl::_isStarted() const |
| 571 | { |
| 572 | if (auto *icest = icest_) { |
| 573 | auto state = pj_ice_strans_get_state(icest); |
| 574 | return state >= PJ_ICE_STRANS_STATE_NEGO and state != PJ_ICE_STRANS_STATE_FAILED; |
| 575 | } |
| 576 | return false; |
| 577 | } |
| 578 | |
| 579 | bool |
| 580 | IceTransport::Impl::_isRunning() const |
| 581 | { |
| 582 | if (auto *icest = icest_) { |
| 583 | auto state = pj_ice_strans_get_state(icest); |
| 584 | return state >= PJ_ICE_STRANS_STATE_RUNNING and state != PJ_ICE_STRANS_STATE_FAILED; |
| 585 | } |
| 586 | return false; |
| 587 | } |
| 588 | |
| 589 | bool |
| 590 | IceTransport::Impl::_isFailed() const |
| 591 | { |
| 592 | if (auto *icest = icest_) |
| 593 | return pj_ice_strans_get_state(icest) == PJ_ICE_STRANS_STATE_FAILED; |
| 594 | return false; |
| 595 | } |
| 596 | |
| 597 | bool |
| 598 | IceTransport::Impl::handleEvents(unsigned max_msec) |
| 599 | { |
| 600 | // By tests, never seen more than two events per 500ms |
| 601 | static constexpr auto MAX_NET_EVENTS = 2; |
| 602 | |
| 603 | pj_time_val max_timeout = {0, static_cast<long>(max_msec)}; |
| 604 | pj_time_val timeout = {0, 0}; |
| 605 | unsigned net_event_count = 0; |
| 606 | |
| 607 | pj_timer_heap_poll(config_.stun_cfg.timer_heap, &timeout); |
| 608 | auto hasActiveTimer = timeout.sec != PJ_MAXINT32 || timeout.msec != PJ_MAXINT32; |
| 609 | |
| 610 | // timeout limitation |
| 611 | if (hasActiveTimer) |
| 612 | pj_time_val_normalize(&timeout); |
| 613 | |
| 614 | if (PJ_TIME_VAL_GT(timeout, max_timeout)) { |
| 615 | timeout = max_timeout; |
| 616 | } |
| 617 | |
| 618 | do { |
| 619 | auto n_events = pj_ioqueue_poll(config_.stun_cfg.ioqueue, &timeout); |
| 620 | |
| 621 | // timeout |
| 622 | if (not n_events) |
| 623 | return hasActiveTimer; |
| 624 | |
| 625 | // error |
| 626 | if (n_events < 0) { |
| 627 | const auto err = pj_get_os_error(); |
| 628 | // Kept as debug as some errors are "normal" in regular context |
| 629 | if (logger_) |
| 630 | logger_->debug("[ice:{}] ioqueue error {:d}: {:s}", fmt::ptr(this), err, sip_utils::sip_strerror(err)); |
| 631 | std::this_thread::sleep_for(std::chrono::milliseconds(PJ_TIME_VAL_MSEC(timeout))); |
| 632 | return hasActiveTimer; |
| 633 | } |
| 634 | |
| 635 | net_event_count += n_events; |
| 636 | timeout.sec = timeout.msec = 0; |
| 637 | } while (net_event_count < MAX_NET_EVENTS); |
| 638 | return hasActiveTimer; |
| 639 | } |
| 640 | |
| 641 | int |
| 642 | IceTransport::Impl::flushTimerHeapAndIoQueue() |
| 643 | { |
| 644 | pj_time_val timerTimeout = {0, 0}; |
| 645 | pj_time_val defaultWaitTime = {0, HANDLE_EVENT_DURATION}; |
| 646 | bool hasActiveTimer = false; |
| 647 | std::chrono::milliseconds totalWaitTime {0}; |
Adrien Béraud | 9a67681 | 2023-08-21 09:02:16 -0400 | [diff] [blame] | 648 | // auto const start = std::chrono::steady_clock::now(); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 649 | // We try to process pending events as fast as possible to |
| 650 | // speed-up the release. |
| 651 | int maxEventToProcess = 10; |
| 652 | |
| 653 | do { |
| 654 | if (checkEventQueue(maxEventToProcess) < 0) |
| 655 | return -1; |
| 656 | |
| 657 | pj_timer_heap_poll(config_.stun_cfg.timer_heap, &timerTimeout); |
| 658 | hasActiveTimer = !(timerTimeout.sec == PJ_MAXINT32 && timerTimeout.msec == PJ_MAXINT32); |
| 659 | |
| 660 | if (hasActiveTimer) { |
| 661 | pj_time_val_normalize(&timerTimeout); |
| 662 | auto waitTime = std::chrono::milliseconds( |
| 663 | std::min(PJ_TIME_VAL_MSEC(timerTimeout), PJ_TIME_VAL_MSEC(defaultWaitTime))); |
| 664 | std::this_thread::sleep_for(waitTime); |
| 665 | totalWaitTime += waitTime; |
| 666 | } |
| 667 | } while (hasActiveTimer && totalWaitTime < std::chrono::milliseconds(MAX_DESTRUCTION_TIMEOUT)); |
| 668 | |
Adrien Béraud | 9a67681 | 2023-08-21 09:02:16 -0400 | [diff] [blame] | 669 | // auto duration = std::chrono::steady_clock::now() - start; |
| 670 | // if (logger_) |
| 671 | // logger_->debug("[ice:{}] Timer heap flushed after {}", fmt::ptr(this), dht::print_duration(duration)); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 672 | |
| 673 | return static_cast<int>(pj_timer_heap_count(config_.stun_cfg.timer_heap)); |
| 674 | } |
| 675 | |
| 676 | int |
| 677 | IceTransport::Impl::checkEventQueue(int maxEventToPoll) |
| 678 | { |
| 679 | pj_time_val timeout = {0, 0}; |
| 680 | int eventCount = 0; |
| 681 | int events = 0; |
| 682 | |
| 683 | do { |
| 684 | events = pj_ioqueue_poll(config_.stun_cfg.ioqueue, &timeout); |
| 685 | if (events < 0) { |
| 686 | const auto err = pj_get_os_error(); |
| 687 | if (logger_) |
| 688 | logger_->error("[ice:{}] ioqueue error {:d}: {:s}", fmt::ptr(this), err, sip_utils::sip_strerror(err)); |
| 689 | return events; |
| 690 | } |
| 691 | |
| 692 | eventCount += events; |
| 693 | |
| 694 | } while (events > 0 && eventCount < maxEventToPoll); |
| 695 | |
| 696 | return eventCount; |
| 697 | } |
| 698 | |
| 699 | void |
| 700 | IceTransport::Impl::onComplete(pj_ice_strans*, pj_ice_strans_op op, pj_status_t status) |
| 701 | { |
| 702 | const char* opname = op == PJ_ICE_STRANS_OP_INIT ? "initialization" |
| 703 | : op == PJ_ICE_STRANS_OP_NEGOTIATION ? "negotiation" |
| 704 | : "unknown_op"; |
| 705 | |
| 706 | const bool done = status == PJ_SUCCESS; |
| 707 | if (done) { |
| 708 | if (logger_) |
| 709 | logger_->debug("[ice:{}] {:s} {:s} success", |
| 710 | fmt::ptr(this), |
| 711 | (config_.protocol == PJ_ICE_TP_TCP ? "TCP" : "UDP"), |
| 712 | opname); |
| 713 | } else { |
| 714 | if (logger_) |
| 715 | logger_->error("[ice:{}] {:s} {:s} failed: {:s}", |
| 716 | fmt::ptr(this), |
| 717 | (config_.protocol == PJ_ICE_TP_TCP ? "TCP" : "UDP"), |
| 718 | opname, |
| 719 | sip_utils::sip_strerror(status)); |
| 720 | } |
| 721 | |
| 722 | if (done and op == PJ_ICE_STRANS_OP_INIT) { |
| 723 | if (initiatorSession_) |
| 724 | setInitiatorSession(); |
| 725 | else |
| 726 | setSlaveSession(); |
| 727 | } |
| 728 | |
| 729 | if (op == PJ_ICE_STRANS_OP_INIT and on_initdone_cb_) |
| 730 | on_initdone_cb_(done); |
| 731 | else if (op == PJ_ICE_STRANS_OP_NEGOTIATION) { |
| 732 | if (done) { |
| 733 | // Dump of connection pairs |
| 734 | if (logger_) |
| 735 | logger_->debug("[ice:{}] {:s} connection pairs ([comp id] local [type] <-> remote [type]):\n{:s}", |
| 736 | fmt::ptr(this), |
| 737 | (config_.protocol == PJ_ICE_TP_TCP ? "TCP" : "UDP"), |
| 738 | link()); |
| 739 | } |
| 740 | if (on_negodone_cb_) |
| 741 | on_negodone_cb_(done); |
| 742 | } |
| 743 | |
| 744 | iceCV_.notify_all(); |
| 745 | } |
| 746 | |
| 747 | std::string |
| 748 | IceTransport::Impl::link() const |
| 749 | { |
| 750 | std::ostringstream out; |
| 751 | for (unsigned strm = 1; strm <= streamsCount_ * compCountPerStream_; strm++) { |
| 752 | auto absIdx = strm; |
| 753 | auto comp = (strm + 1) / compCountPerStream_; |
| 754 | auto laddr = getLocalAddress(absIdx); |
| 755 | auto raddr = getRemoteAddress(absIdx); |
| 756 | |
| 757 | if (laddr and laddr.getPort() != 0 and raddr and raddr.getPort() != 0) { |
| 758 | out << " [" << comp << "] " << laddr.toString(true, true) << " [" |
| 759 | << getCandidateType(getSelectedCandidate(absIdx, false)) << "] " |
| 760 | << " <-> " << raddr.toString(true, true) << " [" |
| 761 | << getCandidateType(getSelectedCandidate(absIdx, true)) << "] " << '\n'; |
| 762 | } else { |
| 763 | out << " [" << comp << "] disabled\n"; |
| 764 | } |
| 765 | } |
| 766 | return out.str(); |
| 767 | } |
| 768 | |
| 769 | bool |
| 770 | IceTransport::Impl::setInitiatorSession() |
| 771 | { |
| 772 | if (logger_) |
| 773 | logger_->debug("[ice:{}] as master", fmt::ptr(this)); |
| 774 | initiatorSession_ = true; |
| 775 | if (_isInitialized()) { |
| 776 | auto status = pj_ice_strans_change_role(icest_, PJ_ICE_SESS_ROLE_CONTROLLING); |
| 777 | if (status != PJ_SUCCESS) { |
| 778 | if (logger_) |
| 779 | logger_->error("[ice:{}] role change failed: {:s}", fmt::ptr(this), sip_utils::sip_strerror(status)); |
| 780 | return false; |
| 781 | } |
| 782 | return true; |
| 783 | } |
| 784 | return createIceSession(PJ_ICE_SESS_ROLE_CONTROLLING); |
| 785 | } |
| 786 | |
| 787 | bool |
| 788 | IceTransport::Impl::setSlaveSession() |
| 789 | { |
| 790 | if (logger_) |
| 791 | logger_->debug("[ice:{}] as slave", fmt::ptr(this)); |
| 792 | initiatorSession_ = false; |
| 793 | if (_isInitialized()) { |
| 794 | auto status = pj_ice_strans_change_role(icest_, PJ_ICE_SESS_ROLE_CONTROLLED); |
| 795 | if (status != PJ_SUCCESS) { |
| 796 | if (logger_) |
| 797 | logger_->error("[ice:{}] role change failed: {:s}", fmt::ptr(this), sip_utils::sip_strerror(status)); |
| 798 | return false; |
| 799 | } |
| 800 | return true; |
| 801 | } |
| 802 | return createIceSession(PJ_ICE_SESS_ROLE_CONTROLLED); |
| 803 | } |
| 804 | |
| 805 | const pj_ice_sess_cand* |
| 806 | IceTransport::Impl::getSelectedCandidate(unsigned comp_id, bool remote) const |
| 807 | { |
| 808 | ASSERT_COMP_ID(comp_id, compCount_); |
| 809 | |
| 810 | // Return the selected candidate pair. Might not be the nominated pair if |
| 811 | // ICE has not concluded yet, but should be the nominated pair afterwards. |
| 812 | if (not _isRunning()) { |
| 813 | if (logger_) |
| 814 | logger_->error("[ice:{}] ICE transport is not running", fmt::ptr(this)); |
| 815 | return nullptr; |
| 816 | } |
| 817 | |
| 818 | const auto* sess = pj_ice_strans_get_valid_pair(icest_, comp_id); |
| 819 | if (sess == nullptr) { |
| 820 | if (logger_) |
| 821 | logger_->warn("[ice:{}] Component {} has no valid pair (disabled)", fmt::ptr(this), comp_id); |
| 822 | return nullptr; |
| 823 | } |
| 824 | |
| 825 | if (remote) |
| 826 | return sess->rcand; |
| 827 | else |
| 828 | return sess->lcand; |
| 829 | } |
| 830 | |
| 831 | IpAddr |
| 832 | IceTransport::Impl::getLocalAddress(unsigned comp_id) const |
| 833 | { |
| 834 | ASSERT_COMP_ID(comp_id, compCount_); |
| 835 | |
| 836 | if (auto cand = getSelectedCandidate(comp_id, false)) |
| 837 | return cand->addr; |
| 838 | |
| 839 | return {}; |
| 840 | } |
| 841 | |
| 842 | IpAddr |
| 843 | IceTransport::Impl::getRemoteAddress(unsigned comp_id) const |
| 844 | { |
| 845 | ASSERT_COMP_ID(comp_id, compCount_); |
| 846 | |
| 847 | if (auto cand = getSelectedCandidate(comp_id, true)) |
| 848 | return cand->addr; |
| 849 | |
| 850 | return {}; |
| 851 | } |
| 852 | |
| 853 | const char* |
| 854 | IceTransport::Impl::getCandidateType(const pj_ice_sess_cand* cand) |
| 855 | { |
| 856 | auto name = cand ? pj_ice_get_cand_type_name(cand->type) : nullptr; |
| 857 | return name ? name : "?"; |
| 858 | } |
| 859 | |
| 860 | void |
| 861 | IceTransport::Impl::getUFragPwd() |
| 862 | { |
| 863 | if (icest_) { |
| 864 | pj_str_t local_ufrag, local_pwd; |
| 865 | |
| 866 | pj_ice_strans_get_ufrag_pwd(icest_, &local_ufrag, &local_pwd, nullptr, nullptr); |
| 867 | local_ufrag_.assign(local_ufrag.ptr, local_ufrag.slen); |
| 868 | local_pwd_.assign(local_pwd.ptr, local_pwd.slen); |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | bool |
| 873 | IceTransport::Impl::createIceSession(pj_ice_sess_role role) |
| 874 | { |
| 875 | if (not icest_) { |
| 876 | return false; |
| 877 | } |
| 878 | |
| 879 | if (pj_ice_strans_init_ice(icest_, role, nullptr, nullptr) != PJ_SUCCESS) { |
| 880 | if (logger_) |
| 881 | logger_->error("[ice:{}] pj_ice_strans_init_ice() failed", fmt::ptr(this)); |
| 882 | return false; |
| 883 | } |
| 884 | |
| 885 | // Fetch some information on local configuration |
| 886 | getUFragPwd(); |
| 887 | |
| 888 | if (logger_) |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 889 | logger_->debug("[ice:{}] (local) ufrag={}, pwd={}", fmt::ptr(this), local_ufrag_, local_pwd_); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 890 | |
| 891 | return true; |
| 892 | } |
| 893 | |
| 894 | bool |
| 895 | IceTransport::Impl::addStunConfig(int af) |
| 896 | { |
| 897 | if (config_.stun_tp_cnt >= PJ_ICE_MAX_STUN) { |
| 898 | if (logger_) |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 899 | logger_->error("Max number of STUN configurations reached ({})", PJ_ICE_MAX_STUN); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 900 | return false; |
| 901 | } |
| 902 | |
| 903 | if (af != pj_AF_INET() and af != pj_AF_INET6()) { |
| 904 | if (logger_) |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 905 | logger_->error("Invalid address familly ({})", af); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 906 | return false; |
| 907 | } |
| 908 | |
| 909 | auto& stun = config_.stun_tp[config_.stun_tp_cnt++]; |
| 910 | |
| 911 | pj_ice_strans_stun_cfg_default(&stun); |
| 912 | stun.cfg.max_pkt_size = STUN_MAX_PACKET_SIZE; |
| 913 | stun.af = af; |
| 914 | stun.conn_type = config_.stun.conn_type; |
| 915 | |
Adrien Béraud | 370257c | 2023-08-15 20:53:09 -0400 | [diff] [blame] | 916 | // if (logger_) |
| 917 | // logger_->debug("[ice:{}] added host stun config for {:s} transport", |
| 918 | // fmt::ptr(this), |
| 919 | // config_.protocol == PJ_ICE_TP_TCP ? "TCP" : "UDP"); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 920 | |
| 921 | return true; |
| 922 | } |
| 923 | |
| 924 | void |
| 925 | IceTransport::Impl::requestUpnpMappings() |
| 926 | { |
| 927 | // Must be called once ! |
| 928 | |
| 929 | std::lock_guard<std::mutex> lock(upnpMutex_); |
| 930 | |
| 931 | if (not upnp_) |
| 932 | return; |
| 933 | |
| 934 | auto transport = isTcpEnabled() ? PJ_CAND_TCP_PASSIVE : PJ_CAND_UDP; |
| 935 | auto portType = transport == PJ_CAND_UDP ? PortType::UDP : PortType::TCP; |
| 936 | |
| 937 | // Request upnp mapping for each component. |
| 938 | for (unsigned id = 1; id <= compCount_; id++) { |
| 939 | // Set port number to 0 to get any available port. |
| 940 | Mapping requestedMap(portType); |
| 941 | |
| 942 | // Request the mapping |
| 943 | Mapping::sharedPtr_t mapPtr = upnp_->reserveMapping(requestedMap); |
| 944 | |
| 945 | // To use a mapping, it must be valid, open and has valid host address. |
| 946 | if (mapPtr and mapPtr->getMapKey() and (mapPtr->getState() == MappingState::OPEN) |
| 947 | and mapPtr->hasValidHostAddress()) { |
| 948 | std::lock_guard<std::mutex> lock(upnpMappingsMutex_); |
| 949 | auto ret = upnpMappings_.emplace(mapPtr->getMapKey(), *mapPtr); |
| 950 | if (ret.second) { |
| 951 | if (logger_) |
| 952 | logger_->debug("[ice:{}] UPNP mapping {:s} successfully allocated", |
| 953 | fmt::ptr(this), |
| 954 | mapPtr->toString(true)); |
| 955 | } else { |
| 956 | if (logger_) |
| 957 | logger_->warn("[ice:{}] UPNP mapping {:s} already in the list!", |
| 958 | fmt::ptr(this), |
| 959 | mapPtr->toString()); |
| 960 | } |
| 961 | } else { |
| 962 | if (logger_) |
| 963 | logger_->warn("[ice:{}] UPNP mapping request failed!", fmt::ptr(this)); |
| 964 | upnp_->releaseMapping(requestedMap); |
| 965 | } |
| 966 | } |
| 967 | } |
| 968 | |
| 969 | bool |
| 970 | IceTransport::Impl::hasUpnp() const |
| 971 | { |
| 972 | return upnp_ and upnpMappings_.size() == compCount_; |
| 973 | } |
| 974 | |
| 975 | void |
| 976 | IceTransport::Impl::addServerReflexiveCandidates( |
| 977 | const std::vector<std::pair<IpAddr, IpAddr>>& addrList) |
| 978 | { |
| 979 | if (addrList.size() != compCount_) { |
| 980 | if (logger_) |
| 981 | logger_->warn("[ice:{}] Provided addr list size {} does not match component count {}", |
| 982 | fmt::ptr(this), |
| 983 | addrList.size(), |
| 984 | compCount_); |
| 985 | return; |
| 986 | } |
| 987 | if (compCount_ > PJ_ICE_MAX_COMP) { |
| 988 | if (logger_) |
| 989 | logger_->error("[ice:{}] Too many components", fmt::ptr(this)); |
| 990 | return; |
| 991 | } |
| 992 | |
| 993 | // Add config for server reflexive candidates (UPNP or from DHT). |
| 994 | if (not addStunConfig(pj_AF_INET())) |
| 995 | return; |
| 996 | |
| 997 | assert(config_.stun_tp_cnt > 0 && config_.stun_tp_cnt < PJ_ICE_MAX_STUN); |
| 998 | auto& stun = config_.stun_tp[config_.stun_tp_cnt - 1]; |
| 999 | |
| 1000 | for (unsigned id = 1; id <= compCount_; id++) { |
| 1001 | auto idx = id - 1; |
| 1002 | auto& localAddr = addrList[idx].first; |
| 1003 | auto& publicAddr = addrList[idx].second; |
| 1004 | |
| 1005 | if (logger_) |
| 1006 | logger_->debug("[ice:{}] Add srflx reflexive candidates [{:s} : {:s}] for comp {:d}", |
| 1007 | fmt::ptr(this), |
| 1008 | localAddr.toString(true), |
| 1009 | publicAddr.toString(true), |
| 1010 | id); |
| 1011 | |
| 1012 | pj_sockaddr_cp(&stun.cfg.user_mapping[idx].local_addr, localAddr.pjPtr()); |
| 1013 | pj_sockaddr_cp(&stun.cfg.user_mapping[idx].mapped_addr, publicAddr.pjPtr()); |
| 1014 | |
| 1015 | if (isTcpEnabled()) { |
| 1016 | if (publicAddr.getPort() == 9) { |
| 1017 | stun.cfg.user_mapping[idx].tp_type = PJ_CAND_TCP_ACTIVE; |
| 1018 | } else { |
| 1019 | stun.cfg.user_mapping[idx].tp_type = PJ_CAND_TCP_PASSIVE; |
| 1020 | } |
| 1021 | } else { |
| 1022 | stun.cfg.user_mapping[idx].tp_type = PJ_CAND_UDP; |
| 1023 | } |
| 1024 | } |
| 1025 | |
| 1026 | stun.cfg.user_mapping_cnt = compCount_; |
| 1027 | } |
| 1028 | |
| 1029 | std::vector<std::pair<IpAddr, IpAddr>> |
| 1030 | IceTransport::Impl::setupGenericReflexiveCandidates() |
| 1031 | { |
| 1032 | if (not accountLocalAddr_) { |
| 1033 | if (logger_) |
| 1034 | logger_->warn("[ice:{}] Missing local address, generic srflx candidates wont be generated!", |
| 1035 | fmt::ptr(this)); |
| 1036 | return {}; |
| 1037 | } |
| 1038 | |
| 1039 | if (not accountPublicAddr_) { |
| 1040 | if (logger_) |
| 1041 | logger_->warn("[ice:{}] Missing public address, generic srflx candidates wont be generated!", |
| 1042 | fmt::ptr(this)); |
| 1043 | return {}; |
| 1044 | } |
| 1045 | |
| 1046 | std::vector<std::pair<IpAddr, IpAddr>> addrList; |
| 1047 | auto isTcp = isTcpEnabled(); |
| 1048 | |
| 1049 | addrList.reserve(compCount_); |
| 1050 | for (unsigned id = 1; id <= compCount_; id++) { |
| 1051 | // For TCP, the type is set to active, because most likely the incoming |
| 1052 | // connection will be blocked by the NAT. |
| 1053 | // For UDP use random port number. |
| 1054 | uint16_t port = isTcp ? 9 |
| 1055 | : upnp::Controller::generateRandomPort(isTcp ? PortType::TCP |
| 1056 | : PortType::UDP); |
| 1057 | |
| 1058 | accountLocalAddr_.setPort(port); |
| 1059 | accountPublicAddr_.setPort(port); |
| 1060 | addrList.emplace_back(accountLocalAddr_, accountPublicAddr_); |
| 1061 | } |
| 1062 | |
| 1063 | return addrList; |
| 1064 | } |
| 1065 | |
| 1066 | std::vector<std::pair<IpAddr, IpAddr>> |
| 1067 | IceTransport::Impl::setupUpnpReflexiveCandidates() |
| 1068 | { |
| 1069 | // Add UPNP server reflexive candidates if available. |
| 1070 | if (not hasUpnp()) |
| 1071 | return {}; |
| 1072 | |
| 1073 | std::lock_guard<std::mutex> lock(upnpMappingsMutex_); |
| 1074 | |
| 1075 | if (upnpMappings_.size() < (size_t)compCount_) { |
| 1076 | if (logger_) |
| 1077 | logger_->warn("[ice:{}] Not enough mappings {:d}. Expected {:d}", |
| 1078 | fmt::ptr(this), |
| 1079 | upnpMappings_.size(), |
| 1080 | compCount_); |
| 1081 | return {}; |
| 1082 | } |
| 1083 | |
| 1084 | std::vector<std::pair<IpAddr, IpAddr>> addrList; |
| 1085 | |
| 1086 | addrList.reserve(upnpMappings_.size()); |
| 1087 | for (auto const& [_, map] : upnpMappings_) { |
| 1088 | assert(map.getMapKey()); |
| 1089 | IpAddr localAddr {map.getInternalAddress()}; |
| 1090 | localAddr.setPort(map.getInternalPort()); |
| 1091 | IpAddr publicAddr {map.getExternalAddress()}; |
| 1092 | publicAddr.setPort(map.getExternalPort()); |
| 1093 | addrList.emplace_back(localAddr, publicAddr); |
| 1094 | } |
| 1095 | |
| 1096 | return addrList; |
| 1097 | } |
| 1098 | |
| 1099 | void |
| 1100 | IceTransport::Impl::setDefaultRemoteAddress(unsigned compId, const IpAddr& addr) |
| 1101 | { |
| 1102 | ASSERT_COMP_ID(compId, compCount_); |
| 1103 | |
| 1104 | iceDefaultRemoteAddr_[compId - 1] = addr; |
| 1105 | // The port does not matter. Set it 0 to avoid confusion. |
| 1106 | iceDefaultRemoteAddr_[compId - 1].setPort(0); |
| 1107 | } |
| 1108 | |
| 1109 | IpAddr |
| 1110 | IceTransport::Impl::getDefaultRemoteAddress(unsigned compId) const |
| 1111 | { |
Adrien Béraud | 0e1bffa | 2023-10-15 17:32:55 -0400 | [diff] [blame] | 1112 | if (compId > compCount_) { |
| 1113 | if (logger_) |
| 1114 | logger_->error("[ice:{}] Invalid component id {:d}", fmt::ptr(this), compId); |
| 1115 | return {}; |
| 1116 | } |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1117 | return iceDefaultRemoteAddr_[compId - 1]; |
| 1118 | } |
| 1119 | |
| 1120 | void |
| 1121 | IceTransport::Impl::onReceiveData(unsigned comp_id, void* pkt, pj_size_t size) |
| 1122 | { |
| 1123 | ASSERT_COMP_ID(comp_id, compCount_); |
| 1124 | |
| 1125 | jami_tracepoint_if_enabled(ice_transport_recv, |
| 1126 | reinterpret_cast<uint64_t>(this), |
| 1127 | comp_id, |
| 1128 | size, |
| 1129 | getRemoteAddress(comp_id).toString().c_str()); |
| 1130 | if (size == 0) |
| 1131 | return; |
| 1132 | |
| 1133 | { |
| 1134 | auto& io = compIO_[comp_id - 1]; |
| 1135 | std::lock_guard<std::mutex> lk(io.mutex); |
| 1136 | |
| 1137 | if (io.recvCb) { |
| 1138 | io.recvCb((uint8_t*) pkt, size); |
| 1139 | return; |
| 1140 | } |
| 1141 | } |
| 1142 | |
| 1143 | std::error_code ec; |
| 1144 | auto err = peerChannels_.at(comp_id - 1).write((const char*) pkt, size, ec); |
| 1145 | if (err < 0) { |
| 1146 | if (logger_) |
| 1147 | logger_->error("[ice:{}] rx: channel is closed", fmt::ptr(this)); |
| 1148 | } |
| 1149 | } |
| 1150 | |
| 1151 | bool |
| 1152 | IceTransport::Impl::_waitForInitialization(std::chrono::milliseconds timeout) |
| 1153 | { |
| 1154 | IceLock lk(icest_); |
| 1155 | |
| 1156 | if (not iceCV_.wait_for(lk, timeout, [this] { |
| 1157 | return threadTerminateFlags_ or _isInitialized() or _isFailed(); |
| 1158 | })) { |
| 1159 | if (logger_) |
| 1160 | logger_->warn("[ice:{}] waitForInitialization: timeout", fmt::ptr(this)); |
| 1161 | return false; |
| 1162 | } |
| 1163 | |
| 1164 | return _isInitialized(); |
| 1165 | } |
| 1166 | |
| 1167 | //============================================================================== |
| 1168 | |
Adrien Béraud | 89933c1 | 2023-07-26 14:53:30 -0400 | [diff] [blame] | 1169 | IceTransport::IceTransport(std::string_view name, const std::shared_ptr<dht::log::Logger>& logger) |
| 1170 | : pimpl_ {std::make_unique<Impl>(name, logger)} |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1171 | {} |
| 1172 | |
| 1173 | IceTransport::~IceTransport() |
| 1174 | { |
| 1175 | cancelOperations(); |
| 1176 | } |
| 1177 | |
| 1178 | const std::shared_ptr<dht::log::Logger>& |
| 1179 | IceTransport::logger() const |
| 1180 | { |
| 1181 | return pimpl_->logger_; |
| 1182 | } |
| 1183 | |
| 1184 | void |
| 1185 | IceTransport::initIceInstance(const IceTransportOptions& options) |
| 1186 | { |
| 1187 | pimpl_->initIceInstance(options); |
| 1188 | jami_tracepoint(ice_transport_context, reinterpret_cast<uint64_t>(this)); |
| 1189 | } |
| 1190 | |
| 1191 | bool |
| 1192 | IceTransport::isInitialized() const |
| 1193 | { |
| 1194 | IceLock lk(pimpl_->icest_); |
| 1195 | return pimpl_->_isInitialized(); |
| 1196 | } |
| 1197 | |
| 1198 | bool |
| 1199 | IceTransport::isStarted() const |
| 1200 | { |
| 1201 | IceLock lk(pimpl_->icest_); |
| 1202 | return pimpl_->_isStarted(); |
| 1203 | } |
| 1204 | |
| 1205 | bool |
| 1206 | IceTransport::isRunning() const |
| 1207 | { |
| 1208 | if (!pimpl_->icest_) |
| 1209 | return false; |
| 1210 | IceLock lk(pimpl_->icest_); |
| 1211 | return pimpl_->_isRunning(); |
| 1212 | } |
| 1213 | |
| 1214 | bool |
| 1215 | IceTransport::isFailed() const |
| 1216 | { |
| 1217 | return pimpl_->_isFailed(); |
| 1218 | } |
| 1219 | |
| 1220 | unsigned |
| 1221 | IceTransport::getComponentCount() const |
| 1222 | { |
| 1223 | return pimpl_->compCount_; |
| 1224 | } |
| 1225 | |
| 1226 | bool |
| 1227 | IceTransport::setSlaveSession() |
| 1228 | { |
| 1229 | return pimpl_->setSlaveSession(); |
| 1230 | } |
| 1231 | bool |
| 1232 | IceTransport::setInitiatorSession() |
| 1233 | { |
| 1234 | return pimpl_->setInitiatorSession(); |
| 1235 | } |
| 1236 | |
| 1237 | bool |
| 1238 | IceTransport::isInitiator() const |
| 1239 | { |
| 1240 | if (isInitialized()) { |
| 1241 | return pj_ice_strans_get_role(pimpl_->icest_) == PJ_ICE_SESS_ROLE_CONTROLLING; |
| 1242 | } |
| 1243 | return pimpl_->initiatorSession_; |
| 1244 | } |
| 1245 | |
| 1246 | bool |
| 1247 | IceTransport::startIce(const Attribute& rem_attrs, std::vector<IceCandidate>&& rem_candidates) |
| 1248 | { |
| 1249 | if (not isInitialized()) { |
| 1250 | if (pimpl_->logger_) |
| 1251 | pimpl_->logger_->error("[ice:{}] not initialized transport", fmt::ptr(pimpl_.get())); |
| 1252 | pimpl_->is_stopped_ = true; |
| 1253 | return false; |
| 1254 | } |
| 1255 | |
| 1256 | // pj_ice_strans_start_ice crashes if remote candidates array is empty |
| 1257 | if (rem_candidates.empty()) { |
| 1258 | if (pimpl_->logger_) |
| 1259 | pimpl_->logger_->error("[ice:{}] start failed: no remote candidates", fmt::ptr(pimpl_.get())); |
| 1260 | pimpl_->is_stopped_ = true; |
| 1261 | return false; |
| 1262 | } |
| 1263 | |
| 1264 | auto comp_cnt = std::max(1u, getComponentCount()); |
| 1265 | if (rem_candidates.size() / comp_cnt > PJ_ICE_ST_MAX_CAND - 1) { |
| 1266 | std::vector<IceCandidate> rcands; |
| 1267 | rcands.reserve(PJ_ICE_ST_MAX_CAND - 1); |
| 1268 | if (pimpl_->logger_) |
| 1269 | pimpl_->logger_->warn("[ice:{}] too much candidates detected, trim list.", fmt::ptr(pimpl_.get())); |
| 1270 | // Just trim some candidates. To avoid to only take host candidates, iterate |
| 1271 | // through the whole list and select some host, some turn and peer reflexives |
| 1272 | // It should give at least enough infos to negotiate. |
| 1273 | auto maxHosts = 8; |
| 1274 | auto maxRelays = PJ_ICE_MAX_TURN; |
| 1275 | for (auto& c : rem_candidates) { |
| 1276 | if (c.type == PJ_ICE_CAND_TYPE_HOST) { |
| 1277 | if (maxHosts == 0) |
| 1278 | continue; |
| 1279 | maxHosts -= 1; |
| 1280 | } else if (c.type == PJ_ICE_CAND_TYPE_RELAYED) { |
| 1281 | if (maxRelays == 0) |
| 1282 | continue; |
| 1283 | maxRelays -= 1; |
| 1284 | } |
| 1285 | if (rcands.size() == PJ_ICE_ST_MAX_CAND - 1) |
| 1286 | break; |
| 1287 | rcands.emplace_back(std::move(c)); |
| 1288 | } |
| 1289 | rem_candidates = std::move(rcands); |
| 1290 | } |
| 1291 | |
| 1292 | pj_str_t ufrag, pwd; |
| 1293 | if (pimpl_->logger_) |
| 1294 | pimpl_->logger_->debug("[ice:{}] negotiation starting ({:d} remote candidates)", |
| 1295 | fmt::ptr(pimpl_), |
| 1296 | rem_candidates.size()); |
| 1297 | |
| 1298 | auto status = pj_ice_strans_start_ice(pimpl_->icest_, |
| 1299 | pj_strset(&ufrag, |
| 1300 | (char*) rem_attrs.ufrag.c_str(), |
| 1301 | rem_attrs.ufrag.size()), |
| 1302 | pj_strset(&pwd, |
| 1303 | (char*) rem_attrs.pwd.c_str(), |
| 1304 | rem_attrs.pwd.size()), |
| 1305 | rem_candidates.size(), |
| 1306 | rem_candidates.data()); |
| 1307 | if (status != PJ_SUCCESS) { |
| 1308 | if (pimpl_->logger_) |
| 1309 | pimpl_->logger_->error("[ice:{}] start failed: {:s}", fmt::ptr(pimpl_.get()), sip_utils::sip_strerror(status)); |
| 1310 | pimpl_->is_stopped_ = true; |
| 1311 | return false; |
| 1312 | } |
| 1313 | |
| 1314 | return true; |
| 1315 | } |
| 1316 | |
| 1317 | bool |
| 1318 | IceTransport::startIce(const SDP& sdp) |
| 1319 | { |
| 1320 | if (pimpl_->streamsCount_ != 1) { |
| 1321 | if (pimpl_->logger_) |
Adrien Béraud | 49b0719 | 2023-06-13 20:03:33 -0400 | [diff] [blame] | 1322 | pimpl_->logger_->error(FMT_STRING("Expected exactly one stream per SDP (found {:d} streams)"), pimpl_->streamsCount_); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1323 | return false; |
| 1324 | } |
| 1325 | |
| 1326 | if (not isInitialized()) { |
| 1327 | if (pimpl_->logger_) |
| 1328 | pimpl_->logger_->error(FMT_STRING("[ice:{}] not initialized transport"), fmt::ptr(pimpl_)); |
| 1329 | pimpl_->is_stopped_ = true; |
| 1330 | return false; |
| 1331 | } |
| 1332 | |
| 1333 | for (unsigned id = 1; id <= getComponentCount(); id++) { |
| 1334 | auto candVec = getLocalCandidates(id); |
| 1335 | for (auto const& cand : candVec) { |
| 1336 | if (pimpl_->logger_) |
| 1337 | pimpl_->logger_->debug("[ice:{}] Using local candidate {:s} for comp {:d}", |
| 1338 | fmt::ptr(pimpl_), cand, id); |
| 1339 | } |
| 1340 | } |
| 1341 | |
| 1342 | if (pimpl_->logger_) |
| 1343 | pimpl_->logger_->debug("[ice:{}] negotiation starting ({:u} remote candidates)", |
| 1344 | fmt::ptr(pimpl_), sdp.candidates.size()); |
| 1345 | pj_str_t ufrag, pwd; |
| 1346 | |
| 1347 | std::vector<IceCandidate> rem_candidates; |
| 1348 | rem_candidates.reserve(sdp.candidates.size()); |
| 1349 | IceCandidate cand; |
| 1350 | for (const auto& line : sdp.candidates) { |
| 1351 | if (parseIceAttributeLine(0, line, cand)) |
| 1352 | rem_candidates.emplace_back(cand); |
| 1353 | } |
| 1354 | |
| 1355 | auto status = pj_ice_strans_start_ice(pimpl_->icest_, |
| 1356 | pj_strset(&ufrag, |
| 1357 | (char*) sdp.ufrag.c_str(), |
| 1358 | sdp.ufrag.size()), |
| 1359 | pj_strset(&pwd, (char*) sdp.pwd.c_str(), sdp.pwd.size()), |
| 1360 | rem_candidates.size(), |
| 1361 | rem_candidates.data()); |
| 1362 | if (status != PJ_SUCCESS) { |
| 1363 | if (pimpl_->logger_) |
| 1364 | pimpl_->logger_->error("[ice:{}] start failed: {:s}", fmt::ptr(pimpl_), sip_utils::sip_strerror(status)); |
| 1365 | pimpl_->is_stopped_ = true; |
| 1366 | return false; |
| 1367 | } |
| 1368 | |
| 1369 | return true; |
| 1370 | } |
| 1371 | |
| 1372 | void |
| 1373 | IceTransport::cancelOperations() |
| 1374 | { |
| 1375 | pimpl_->cancelOperations(); |
| 1376 | } |
| 1377 | |
| 1378 | IpAddr |
| 1379 | IceTransport::getLocalAddress(unsigned comp_id) const |
| 1380 | { |
| 1381 | return pimpl_->getLocalAddress(comp_id); |
| 1382 | } |
| 1383 | |
| 1384 | IpAddr |
| 1385 | IceTransport::getRemoteAddress(unsigned comp_id) const |
| 1386 | { |
| 1387 | // Return the default remote address if set. |
| 1388 | // Note that the default remote addresses are the addresses |
| 1389 | // set in the 'c=' and 'a=rtcp' lines of the received SDP. |
| 1390 | // See pj_ice_strans_sendto2() for more details. |
| 1391 | if (auto defaultAddr = pimpl_->getDefaultRemoteAddress(comp_id)) { |
| 1392 | return defaultAddr; |
| 1393 | } |
| 1394 | |
| 1395 | return pimpl_->getRemoteAddress(comp_id); |
| 1396 | } |
| 1397 | |
| 1398 | const IceTransport::Attribute |
| 1399 | IceTransport::getLocalAttributes() const |
| 1400 | { |
| 1401 | return {pimpl_->local_ufrag_, pimpl_->local_pwd_}; |
| 1402 | } |
| 1403 | |
| 1404 | std::vector<std::string> |
| 1405 | IceTransport::getLocalCandidates(unsigned comp_id) const |
| 1406 | { |
| 1407 | ASSERT_COMP_ID(comp_id, getComponentCount()); |
| 1408 | std::vector<std::string> res; |
| 1409 | pj_ice_sess_cand cand[MAX_CANDIDATES]; |
| 1410 | unsigned cand_cnt = PJ_ARRAY_SIZE(cand); |
| 1411 | |
| 1412 | if (!isInitialized()) { |
| 1413 | return res; |
| 1414 | } |
| 1415 | |
| 1416 | if (pj_ice_strans_enum_cands(pimpl_->icest_, comp_id, &cand_cnt, cand) != PJ_SUCCESS) { |
| 1417 | if (pimpl_->logger_) |
| 1418 | pimpl_->logger_->error("[ice:{}] pj_ice_strans_enum_cands() failed", fmt::ptr(pimpl_)); |
| 1419 | return res; |
| 1420 | } |
| 1421 | |
| 1422 | res.reserve(cand_cnt); |
| 1423 | for (unsigned i = 0; i < cand_cnt; ++i) { |
| 1424 | /** Section 4.5, RFC 6544 (https://tools.ietf.org/html/rfc6544) |
| 1425 | * candidate-attribute = "candidate" ":" foundation SP component-id |
| 1426 | * SP "TCP" SP priority SP connection-address SP port SP cand-type [SP |
| 1427 | * rel-addr] [SP rel-port] SP tcp-type-ext |
| 1428 | * *(SP extension-att-name SP |
| 1429 | * extension-att-value) |
| 1430 | * |
| 1431 | * tcp-type-ext = "tcptype" SP tcp-type |
| 1432 | * tcp-type = "active" / "passive" / "so" |
| 1433 | */ |
| 1434 | char ipaddr[PJ_INET6_ADDRSTRLEN]; |
| 1435 | std::string tcp_type; |
| 1436 | if (cand[i].transport != PJ_CAND_UDP) { |
| 1437 | tcp_type += " tcptype"; |
| 1438 | switch (cand[i].transport) { |
| 1439 | case PJ_CAND_TCP_ACTIVE: |
| 1440 | tcp_type += " active"; |
| 1441 | break; |
| 1442 | case PJ_CAND_TCP_PASSIVE: |
| 1443 | tcp_type += " passive"; |
| 1444 | break; |
| 1445 | case PJ_CAND_TCP_SO: |
| 1446 | default: |
| 1447 | tcp_type += " so"; |
| 1448 | break; |
| 1449 | } |
| 1450 | } |
| 1451 | res.emplace_back( |
| 1452 | fmt::format("{} {} {} {} {} {} typ {}{}", |
| 1453 | sip_utils::as_view(cand[i].foundation), |
| 1454 | cand[i].comp_id, |
| 1455 | (cand[i].transport == PJ_CAND_UDP ? "UDP" : "TCP"), |
| 1456 | cand[i].prio, |
| 1457 | pj_sockaddr_print(&cand[i].addr, ipaddr, sizeof(ipaddr), 0), |
| 1458 | pj_sockaddr_get_port(&cand[i].addr), |
| 1459 | pj_ice_get_cand_type_name(cand[i].type), |
| 1460 | tcp_type)); |
| 1461 | } |
| 1462 | |
| 1463 | return res; |
| 1464 | } |
| 1465 | std::vector<std::string> |
| 1466 | IceTransport::getLocalCandidates(unsigned streamIdx, unsigned compId) const |
| 1467 | { |
| 1468 | ASSERT_COMP_ID(compId, getComponentCount()); |
| 1469 | |
| 1470 | std::vector<std::string> res; |
| 1471 | pj_ice_sess_cand cand[MAX_CANDIDATES]; |
| 1472 | unsigned cand_cnt = MAX_CANDIDATES; |
| 1473 | |
| 1474 | if (not isInitialized()) { |
| 1475 | return res; |
| 1476 | } |
| 1477 | |
| 1478 | // In the implementation, the component IDs are enumerated globally |
| 1479 | // (per SDP: 1, 2, 3, 4, ...). This is simpler because we create |
| 1480 | // only one pj_ice_strans instance. However, the component IDs are |
| 1481 | // enumerated per stream in the generated SDP (1, 2, 1, 2, ...) in |
| 1482 | // order to be compliant with the spec. |
| 1483 | |
| 1484 | auto globalCompId = streamIdx * 2 + compId; |
| 1485 | if (pj_ice_strans_enum_cands(pimpl_->icest_, globalCompId, &cand_cnt, cand) != PJ_SUCCESS) { |
| 1486 | if (pimpl_->logger_) |
| 1487 | pimpl_->logger_->error("[ice:{}] pj_ice_strans_enum_cands() failed", fmt::ptr(pimpl_)); |
| 1488 | return res; |
| 1489 | } |
| 1490 | |
| 1491 | res.reserve(cand_cnt); |
| 1492 | // Build ICE attributes according to RFC 6544, section 4.5. |
| 1493 | for (unsigned i = 0; i < cand_cnt; ++i) { |
| 1494 | char ipaddr[PJ_INET6_ADDRSTRLEN]; |
| 1495 | std::string tcp_type; |
| 1496 | if (cand[i].transport != PJ_CAND_UDP) { |
| 1497 | tcp_type += " tcptype"; |
| 1498 | switch (cand[i].transport) { |
| 1499 | case PJ_CAND_TCP_ACTIVE: |
| 1500 | tcp_type += " active"; |
| 1501 | break; |
| 1502 | case PJ_CAND_TCP_PASSIVE: |
| 1503 | tcp_type += " passive"; |
| 1504 | break; |
| 1505 | case PJ_CAND_TCP_SO: |
| 1506 | default: |
| 1507 | tcp_type += " so"; |
| 1508 | break; |
| 1509 | } |
| 1510 | } |
| 1511 | res.emplace_back( |
| 1512 | fmt::format("{} {} {} {} {} {} typ {}{}", |
| 1513 | sip_utils::as_view(cand[i].foundation), |
| 1514 | compId, |
| 1515 | (cand[i].transport == PJ_CAND_UDP ? "UDP" : "TCP"), |
| 1516 | cand[i].prio, |
| 1517 | pj_sockaddr_print(&cand[i].addr, ipaddr, sizeof(ipaddr), 0), |
| 1518 | pj_sockaddr_get_port(&cand[i].addr), |
| 1519 | pj_ice_get_cand_type_name(cand[i].type), |
| 1520 | tcp_type)); |
| 1521 | } |
| 1522 | |
| 1523 | return res; |
| 1524 | } |
| 1525 | |
| 1526 | bool |
| 1527 | IceTransport::parseIceAttributeLine(unsigned streamIdx, |
| 1528 | const std::string& line, |
| 1529 | IceCandidate& cand) const |
| 1530 | { |
| 1531 | // Silently ignore empty lines |
| 1532 | if (line.empty()) |
| 1533 | return false; |
| 1534 | |
| 1535 | if (streamIdx >= pimpl_->streamsCount_) { |
| 1536 | throw std::runtime_error(fmt::format("Stream index {:d} is invalid!", streamIdx)); |
| 1537 | } |
| 1538 | |
| 1539 | int af, cnt; |
| 1540 | char foundation[32], transport[12], ipaddr[80], type[32], tcp_type[32]; |
| 1541 | pj_str_t tmpaddr; |
| 1542 | unsigned comp_id, prio, port; |
| 1543 | pj_status_t status; |
| 1544 | pj_bool_t is_tcp = PJ_FALSE; |
| 1545 | |
| 1546 | // Parse ICE attribute line according to RFC-6544 section 4.5. |
| 1547 | // TODO/WARNING: There is no fail-safe in case of malformed attributes. |
| 1548 | cnt = sscanf(line.c_str(), |
| 1549 | "%31s %u %11s %u %79s %u typ %31s tcptype %31s\n", |
| 1550 | foundation, |
| 1551 | &comp_id, |
| 1552 | transport, |
| 1553 | &prio, |
| 1554 | ipaddr, |
| 1555 | &port, |
| 1556 | type, |
| 1557 | tcp_type); |
| 1558 | if (cnt != 7 && cnt != 8) { |
| 1559 | if (pimpl_->logger_) |
| 1560 | pimpl_->logger_->error("[ice:{}] Invalid ICE candidate line: {:s}", fmt::ptr(pimpl_), line); |
| 1561 | return false; |
| 1562 | } |
| 1563 | |
| 1564 | if (strcmp(transport, "TCP") == 0) { |
| 1565 | is_tcp = PJ_TRUE; |
| 1566 | } |
| 1567 | |
| 1568 | pj_bzero(&cand, sizeof(IceCandidate)); |
| 1569 | |
| 1570 | if (strcmp(type, "host") == 0) |
| 1571 | cand.type = PJ_ICE_CAND_TYPE_HOST; |
| 1572 | else if (strcmp(type, "srflx") == 0) |
| 1573 | cand.type = PJ_ICE_CAND_TYPE_SRFLX; |
| 1574 | else if (strcmp(type, "prflx") == 0) |
| 1575 | cand.type = PJ_ICE_CAND_TYPE_PRFLX; |
| 1576 | else if (strcmp(type, "relay") == 0) |
| 1577 | cand.type = PJ_ICE_CAND_TYPE_RELAYED; |
| 1578 | else { |
| 1579 | if (pimpl_->logger_) |
| 1580 | pimpl_->logger_->warn("[ice:{}] invalid remote candidate type '{:s}'", fmt::ptr(pimpl_), type); |
| 1581 | return false; |
| 1582 | } |
| 1583 | |
| 1584 | if (is_tcp) { |
| 1585 | if (strcmp(tcp_type, "active") == 0) |
| 1586 | cand.transport = PJ_CAND_TCP_ACTIVE; |
| 1587 | else if (strcmp(tcp_type, "passive") == 0) |
| 1588 | cand.transport = PJ_CAND_TCP_PASSIVE; |
| 1589 | else if (strcmp(tcp_type, "so") == 0) |
| 1590 | cand.transport = PJ_CAND_TCP_SO; |
| 1591 | else { |
| 1592 | if (pimpl_->logger_) |
| 1593 | pimpl_->logger_->warn("[ice:{}] invalid transport type type '{:s}'", fmt::ptr(pimpl_), tcp_type); |
| 1594 | return false; |
| 1595 | } |
| 1596 | } else { |
| 1597 | cand.transport = PJ_CAND_UDP; |
| 1598 | } |
| 1599 | |
| 1600 | // If the component Id is enumerated relative to media, convert |
| 1601 | // it to absolute enumeration. |
| 1602 | if (comp_id <= pimpl_->compCountPerStream_) { |
| 1603 | comp_id += pimpl_->compCountPerStream_ * streamIdx; |
| 1604 | } |
| 1605 | cand.comp_id = (pj_uint8_t) comp_id; |
| 1606 | |
| 1607 | cand.prio = prio; |
| 1608 | |
| 1609 | if (strchr(ipaddr, ':')) |
| 1610 | af = pj_AF_INET6(); |
| 1611 | else { |
| 1612 | af = pj_AF_INET(); |
| 1613 | pimpl_->onlyIPv4Private_ &= IpAddr(ipaddr).isPrivate(); |
| 1614 | } |
| 1615 | |
| 1616 | tmpaddr = pj_str(ipaddr); |
| 1617 | pj_sockaddr_init(af, &cand.addr, NULL, 0); |
| 1618 | status = pj_sockaddr_set_str_addr(af, &cand.addr, &tmpaddr); |
| 1619 | if (status != PJ_SUCCESS) { |
| 1620 | if (pimpl_->logger_) |
| 1621 | pimpl_->logger_->warn("[ice:{}] invalid IP address '{:s}'", fmt::ptr(pimpl_), ipaddr); |
| 1622 | return false; |
| 1623 | } |
| 1624 | |
| 1625 | pj_sockaddr_set_port(&cand.addr, (pj_uint16_t) port); |
| 1626 | pj_strdup2(pimpl_->pool_.get(), &cand.foundation, foundation); |
| 1627 | |
| 1628 | return true; |
| 1629 | } |
| 1630 | |
| 1631 | ssize_t |
| 1632 | IceTransport::recv(unsigned compId, unsigned char* buf, size_t len, std::error_code& ec) |
| 1633 | { |
| 1634 | ASSERT_COMP_ID(compId, getComponentCount()); |
| 1635 | auto& io = pimpl_->compIO_[compId - 1]; |
| 1636 | std::lock_guard<std::mutex> lk(io.mutex); |
| 1637 | |
| 1638 | if (io.queue.empty()) { |
| 1639 | ec = std::make_error_code(std::errc::resource_unavailable_try_again); |
| 1640 | return -1; |
| 1641 | } |
| 1642 | |
| 1643 | auto& packet = io.queue.front(); |
Adrien Béraud | 21d5f46 | 2023-08-27 12:06:21 -0400 | [diff] [blame] | 1644 | const auto count = std::min(len, packet.size()); |
| 1645 | std::copy_n(packet.begin(), count, buf); |
| 1646 | if (count == packet.size()) { |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1647 | io.queue.pop_front(); |
| 1648 | } else { |
Adrien Béraud | 21d5f46 | 2023-08-27 12:06:21 -0400 | [diff] [blame] | 1649 | packet.erase(packet.begin(), packet.begin() + count); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1650 | } |
| 1651 | |
| 1652 | ec.clear(); |
| 1653 | return count; |
| 1654 | } |
| 1655 | |
| 1656 | ssize_t |
| 1657 | IceTransport::recvfrom(unsigned compId, char* buf, size_t len, std::error_code& ec) |
| 1658 | { |
| 1659 | ASSERT_COMP_ID(compId, getComponentCount()); |
| 1660 | return pimpl_->peerChannels_.at(compId - 1).read(buf, len, ec); |
| 1661 | } |
| 1662 | |
| 1663 | void |
| 1664 | IceTransport::setOnRecv(unsigned compId, IceRecvCb cb) |
| 1665 | { |
| 1666 | ASSERT_COMP_ID(compId, getComponentCount()); |
| 1667 | |
| 1668 | auto& io = pimpl_->compIO_[compId - 1]; |
| 1669 | std::lock_guard<std::mutex> lk(io.mutex); |
| 1670 | io.recvCb = std::move(cb); |
| 1671 | |
| 1672 | if (io.recvCb) { |
| 1673 | // Flush existing queue using the callback |
| 1674 | for (const auto& packet : io.queue) |
Adrien Béraud | 21d5f46 | 2023-08-27 12:06:21 -0400 | [diff] [blame] | 1675 | io.recvCb((uint8_t*) packet.data(), packet.size()); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1676 | io.queue.clear(); |
| 1677 | } |
| 1678 | } |
| 1679 | |
| 1680 | void |
| 1681 | IceTransport::setOnShutdown(onShutdownCb&& cb) |
| 1682 | { |
Adrien Béraud | ef3e9fd | 2023-10-01 21:15:15 -0400 | [diff] [blame] | 1683 | pimpl_->scb = std::move(cb); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1684 | } |
| 1685 | |
| 1686 | ssize_t |
| 1687 | IceTransport::send(unsigned compId, const unsigned char* buf, size_t len) |
| 1688 | { |
| 1689 | ASSERT_COMP_ID(compId, getComponentCount()); |
| 1690 | |
| 1691 | auto remote = getRemoteAddress(compId); |
| 1692 | |
| 1693 | if (!remote) { |
| 1694 | if (pimpl_->logger_) |
| 1695 | pimpl_->logger_->error("[ice:{}] can't find remote address for component {:d}", fmt::ptr(pimpl_), compId); |
| 1696 | errno = EINVAL; |
| 1697 | return -1; |
| 1698 | } |
| 1699 | |
| 1700 | std::unique_lock dlk(pimpl_->sendDataMutex_, std::defer_lock); |
| 1701 | if (isTCPEnabled()) |
| 1702 | dlk.lock(); |
| 1703 | |
| 1704 | jami_tracepoint(ice_transport_send, |
| 1705 | reinterpret_cast<uint64_t>(this), |
| 1706 | compId, |
| 1707 | len, |
| 1708 | remote.toString().c_str()); |
| 1709 | |
| 1710 | auto status = pj_ice_strans_sendto2(pimpl_->icest_, |
| 1711 | compId, |
| 1712 | buf, |
| 1713 | len, |
| 1714 | remote.pjPtr(), |
| 1715 | remote.getLength()); |
| 1716 | |
| 1717 | jami_tracepoint(ice_transport_send_status, status); |
| 1718 | |
| 1719 | if (status == PJ_EPENDING && isTCPEnabled()) { |
| 1720 | // NOTE; because we are in TCP, the sent size will count the header (2 |
| 1721 | // bytes length). |
| 1722 | pimpl_->waitDataCv_.wait(dlk, [&] { |
| 1723 | return pimpl_->lastSentLen_ >= static_cast<pj_size_t>(len) or pimpl_->destroying_; |
| 1724 | }); |
| 1725 | pimpl_->lastSentLen_ = 0; |
| 1726 | } else if (status != PJ_SUCCESS && status != PJ_EPENDING) { |
| 1727 | if (status == PJ_EBUSY) { |
| 1728 | errno = EAGAIN; |
| 1729 | } else { |
| 1730 | if (pimpl_->logger_) |
| 1731 | pimpl_->logger_->error("[ice:{}] ice send failed: {:s}", fmt::ptr(pimpl_), sip_utils::sip_strerror(status)); |
| 1732 | errno = EIO; |
| 1733 | } |
| 1734 | return -1; |
| 1735 | } |
| 1736 | |
| 1737 | return len; |
| 1738 | } |
| 1739 | |
| 1740 | bool |
| 1741 | IceTransport::waitForInitialization(std::chrono::milliseconds timeout) |
| 1742 | { |
| 1743 | return pimpl_->_waitForInitialization(timeout); |
| 1744 | } |
| 1745 | |
| 1746 | ssize_t |
| 1747 | IceTransport::waitForData(unsigned compId, std::chrono::milliseconds timeout, std::error_code& ec) |
| 1748 | { |
| 1749 | ASSERT_COMP_ID(compId, getComponentCount()); |
| 1750 | return pimpl_->peerChannels_.at(compId - 1).wait(timeout, ec); |
| 1751 | } |
| 1752 | |
| 1753 | bool |
Adrien Béraud | 02d6dad | 2023-11-06 09:26:51 -0500 | [diff] [blame] | 1754 | IceTransport::isTCPEnabled() const |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1755 | { |
| 1756 | return pimpl_->isTcpEnabled(); |
| 1757 | } |
| 1758 | |
| 1759 | ICESDP |
| 1760 | IceTransport::parseIceCandidates(std::string_view sdp_msg) |
| 1761 | { |
| 1762 | if (pimpl_->streamsCount_ != 1) { |
| 1763 | if (pimpl_->logger_) |
Sébastien Blin | cf56940 | 2023-07-27 09:46:40 -0400 | [diff] [blame] | 1764 | pimpl_->logger_->error("Expected exactly one stream per SDP (found {} streams)", pimpl_->streamsCount_); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1765 | return {}; |
| 1766 | } |
| 1767 | |
| 1768 | ICESDP res; |
| 1769 | int nr = 0; |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 1770 | for (std::string_view line; dhtnet::getline(sdp_msg, line); nr++) { |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1771 | if (nr == 0) { |
| 1772 | res.rem_ufrag = line; |
| 1773 | } else if (nr == 1) { |
| 1774 | res.rem_pwd = line; |
| 1775 | } else { |
| 1776 | IceCandidate cand; |
| 1777 | if (parseIceAttributeLine(0, std::string(line), cand)) { |
| 1778 | if (pimpl_->logger_) |
| 1779 | pimpl_->logger_->debug("[ice:{}] Add remote candidate: {}", |
| 1780 | fmt::ptr(pimpl_), |
| 1781 | line); |
| 1782 | res.rem_candidates.emplace_back(cand); |
| 1783 | } |
| 1784 | } |
| 1785 | } |
| 1786 | return res; |
| 1787 | } |
| 1788 | |
| 1789 | void |
| 1790 | IceTransport::setDefaultRemoteAddress(unsigned comp_id, const IpAddr& addr) |
| 1791 | { |
| 1792 | pimpl_->setDefaultRemoteAddress(comp_id, addr); |
| 1793 | } |
| 1794 | |
| 1795 | std::string |
| 1796 | IceTransport::link() const |
| 1797 | { |
| 1798 | return pimpl_->link(); |
| 1799 | } |
| 1800 | |
| 1801 | //============================================================================== |
| 1802 | |
Adrien Béraud | 89933c1 | 2023-07-26 14:53:30 -0400 | [diff] [blame] | 1803 | IceTransportFactory::IceTransportFactory(const std::shared_ptr<Logger>& logger) |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1804 | : cp_(new pj_caching_pool(), |
| 1805 | [](pj_caching_pool* p) { |
| 1806 | pj_caching_pool_destroy(p); |
| 1807 | delete p; |
| 1808 | }) |
| 1809 | , ice_cfg_() |
Adrien Béraud | 89933c1 | 2023-07-26 14:53:30 -0400 | [diff] [blame] | 1810 | , logger_(logger) |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1811 | { |
| 1812 | pj_caching_pool_init(cp_.get(), NULL, 0); |
| 1813 | |
| 1814 | pj_ice_strans_cfg_default(&ice_cfg_); |
| 1815 | ice_cfg_.stun_cfg.pf = &cp_->factory; |
| 1816 | |
| 1817 | // v2.4.5 of PJNATH has a default of 100ms but RFC 5389 since version 14 requires |
| 1818 | // a minimum of 500ms on fixed-line links. Our usual case is wireless links. |
| 1819 | // This solves too long ICE exchange by DHT. |
| 1820 | // Using 500ms with default PJ_STUN_MAX_TRANSMIT_COUNT (7) gives around 33s before timeout. |
| 1821 | ice_cfg_.stun_cfg.rto_msec = 500; |
| 1822 | |
| 1823 | // See https://tools.ietf.org/html/rfc5245#section-8.1.1.2 |
| 1824 | // If enabled, it may help speed-up the connectivity, but may cause |
| 1825 | // the nomination of sub-optimal pairs. |
| 1826 | ice_cfg_.opt.aggressive = PJ_FALSE; |
| 1827 | } |
| 1828 | |
| 1829 | IceTransportFactory::~IceTransportFactory() {} |
| 1830 | |
| 1831 | std::shared_ptr<IceTransport> |
| 1832 | IceTransportFactory::createTransport(std::string_view name) |
| 1833 | { |
Adrien Béraud | 9cf66f1 | 2023-10-01 21:15:15 -0400 | [diff] [blame] | 1834 | return std::make_shared<IceTransport>(name, logger_); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1835 | } |
| 1836 | |
| 1837 | std::unique_ptr<IceTransport> |
| 1838 | IceTransportFactory::createUTransport(std::string_view name) |
| 1839 | { |
Adrien Béraud | 9cf66f1 | 2023-10-01 21:15:15 -0400 | [diff] [blame] | 1840 | return std::make_unique<IceTransport>(name, logger_); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1841 | } |
| 1842 | |
| 1843 | //============================================================================== |
| 1844 | |
| 1845 | void |
| 1846 | IceSocket::close() |
| 1847 | { |
| 1848 | if (ice_transport_) |
| 1849 | ice_transport_->setOnRecv(compId_, {}); |
| 1850 | ice_transport_.reset(); |
| 1851 | } |
| 1852 | |
| 1853 | ssize_t |
| 1854 | IceSocket::send(const unsigned char* buf, size_t len) |
| 1855 | { |
| 1856 | if (not ice_transport_) |
| 1857 | return -1; |
| 1858 | return ice_transport_->send(compId_, buf, len); |
| 1859 | } |
| 1860 | |
| 1861 | ssize_t |
| 1862 | IceSocket::waitForData(std::chrono::milliseconds timeout) |
| 1863 | { |
| 1864 | if (not ice_transport_) |
| 1865 | return -1; |
| 1866 | |
| 1867 | std::error_code ec; |
| 1868 | return ice_transport_->waitForData(compId_, timeout, ec); |
| 1869 | } |
| 1870 | |
| 1871 | void |
| 1872 | IceSocket::setOnRecv(IceRecvCb cb) |
| 1873 | { |
| 1874 | if (ice_transport_) |
| 1875 | ice_transport_->setOnRecv(compId_, cb); |
| 1876 | } |
| 1877 | |
| 1878 | uint16_t |
| 1879 | IceSocket::getTransportOverhead() |
| 1880 | { |
| 1881 | if (not ice_transport_) |
| 1882 | return 0; |
| 1883 | |
| 1884 | return (ice_transport_->getRemoteAddress(compId_).getFamily() == AF_INET) ? IPV4_HEADER_SIZE |
| 1885 | : IPV6_HEADER_SIZE; |
| 1886 | } |
| 1887 | |
| 1888 | void |
| 1889 | IceSocket::setDefaultRemoteAddress(const IpAddr& addr) |
| 1890 | { |
| 1891 | if (ice_transport_) |
| 1892 | ice_transport_->setDefaultRemoteAddress(compId_, addr); |
| 1893 | } |
| 1894 | |
Sébastien Blin | 464bdff | 2023-07-19 08:02:53 -0400 | [diff] [blame] | 1895 | } // namespace dhtnet |