| | | 1 | | // Copyright (c) ZeroC, Inc. |
| | | 2 | | |
| | | 3 | | using System.Diagnostics; |
| | | 4 | | using System.Text; |
| | | 5 | | |
| | | 6 | | #nullable enable |
| | | 7 | | |
| | | 8 | | namespace Ice.Internal; |
| | | 9 | | |
| | | 10 | | internal class MultiDictionary<K, V> : Dictionary<K, ICollection<V>> where K : class |
| | | 11 | | { |
| | | 12 | | internal void Add(K key, V value) |
| | | 13 | | { |
| | | 14 | | if (!TryGetValue(key, out ICollection<V>? list)) |
| | | 15 | | { |
| | | 16 | | list = []; |
| | | 17 | | Add(key, list); |
| | | 18 | | } |
| | | 19 | | list.Add(value); |
| | | 20 | | } |
| | | 21 | | |
| | | 22 | | internal void Remove(K key, V value) |
| | | 23 | | { |
| | | 24 | | ICollection<V> list = this[key]; |
| | | 25 | | list.Remove(value); |
| | | 26 | | if (list.Count == 0) |
| | | 27 | | { |
| | | 28 | | Remove(key); |
| | | 29 | | } |
| | | 30 | | } |
| | | 31 | | } |
| | | 32 | | |
| | | 33 | | internal sealed class OutgoingConnectionFactory |
| | | 34 | | { |
| | | 35 | | internal interface CreateConnectionCallback |
| | | 36 | | { |
| | | 37 | | void setConnection(ConnectionI connection, bool compress); |
| | | 38 | | |
| | | 39 | | void setException(LocalException ex); |
| | | 40 | | } |
| | | 41 | | |
| | | 42 | | internal void destroy() |
| | | 43 | | { |
| | 1 | 44 | | lock (_mutex) |
| | | 45 | | { |
| | 1 | 46 | | if (_destroyed) |
| | | 47 | | { |
| | 0 | 48 | | return; |
| | | 49 | | } |
| | | 50 | | |
| | 1 | 51 | | foreach (ICollection<ConnectionI> connections in _connections.Values) |
| | | 52 | | { |
| | 1 | 53 | | foreach (ConnectionI c in connections) |
| | | 54 | | { |
| | 1 | 55 | | c.destroy(ConnectionI.CommunicatorDestroyed); |
| | | 56 | | } |
| | | 57 | | } |
| | | 58 | | |
| | 1 | 59 | | _destroyed = true; |
| | 1 | 60 | | _defaultObjectAdapter = null; |
| | 1 | 61 | | Monitor.PulseAll(_mutex); |
| | 1 | 62 | | } |
| | 1 | 63 | | } |
| | | 64 | | |
| | | 65 | | internal void updateConnectionObservers() |
| | | 66 | | { |
| | 1 | 67 | | lock (_mutex) |
| | | 68 | | { |
| | 1 | 69 | | foreach (ICollection<ConnectionI> connections in _connections.Values) |
| | | 70 | | { |
| | 1 | 71 | | foreach (ConnectionI c in connections) |
| | | 72 | | { |
| | 1 | 73 | | c.updateObserver(); |
| | | 74 | | } |
| | | 75 | | } |
| | | 76 | | } |
| | 1 | 77 | | } |
| | | 78 | | |
| | | 79 | | internal void waitUntilFinished() |
| | | 80 | | { |
| | | 81 | | Dictionary<Connector, ICollection<ConnectionI>> connections; |
| | 1 | 82 | | lock (_mutex) |
| | | 83 | | { |
| | | 84 | | // First we wait until the factory is destroyed. We also wait until there are no pending connections |
| | | 85 | | // anymore. Only then we can be sure the _connections contains all connections. |
| | 1 | 86 | | while (!_destroyed || _pending.Count > 0 || _pendingConnectCount > 0) |
| | | 87 | | { |
| | 1 | 88 | | Monitor.Wait(_mutex); |
| | | 89 | | } |
| | | 90 | | |
| | | 91 | | // We want to wait until all connections are finished outside the thread synchronization. |
| | 1 | 92 | | connections = new Dictionary<Connector, ICollection<ConnectionI>>(_connections); |
| | 1 | 93 | | } |
| | | 94 | | |
| | | 95 | | // Now we wait until the destruction of each connection is finished. |
| | 1 | 96 | | foreach (ICollection<ConnectionI> cl in connections.Values) |
| | | 97 | | { |
| | 1 | 98 | | foreach (ConnectionI c in cl) |
| | | 99 | | { |
| | 1 | 100 | | c.waitUntilFinished(); |
| | | 101 | | } |
| | | 102 | | } |
| | 1 | 103 | | } |
| | | 104 | | |
| | | 105 | | internal void create(List<EndpointI> endpoints, bool hasMore, CreateConnectionCallback callback) |
| | | 106 | | { |
| | | 107 | | Debug.Assert(endpoints.Count > 0); |
| | | 108 | | |
| | | 109 | | // Try to find a connection to one of the given endpoints. |
| | | 110 | | try |
| | | 111 | | { |
| | 1 | 112 | | if (findConnection(endpoints, out bool compress) is ConnectionI connection) |
| | | 113 | | { |
| | 1 | 114 | | callback.setConnection(connection, compress); |
| | 1 | 115 | | return; |
| | | 116 | | } |
| | 1 | 117 | | } |
| | 0 | 118 | | catch (LocalException ex) |
| | | 119 | | { |
| | 0 | 120 | | callback.setException(ex); |
| | 0 | 121 | | return; |
| | | 122 | | } |
| | | 123 | | |
| | 1 | 124 | | var cb = new ConnectCallback(this, endpoints, hasMore, callback); |
| | 1 | 125 | | cb.getConnectors(); |
| | 1 | 126 | | } |
| | | 127 | | |
| | | 128 | | internal void setRouterInfo(RouterInfo routerInfo) |
| | | 129 | | { |
| | | 130 | | Debug.Assert(routerInfo is not null); |
| | 1 | 131 | | ObjectAdapter adapter = routerInfo.getAdapter(); |
| | 1 | 132 | | EndpointI[] endpoints = routerInfo.getClientEndpoints(); // Must be called outside the synchronization |
| | | 133 | | |
| | 1 | 134 | | lock (_mutex) |
| | | 135 | | { |
| | 1 | 136 | | if (_destroyed) |
| | | 137 | | { |
| | 0 | 138 | | throw new CommunicatorDestroyedException(); |
| | | 139 | | } |
| | | 140 | | |
| | | 141 | | // Search for connections to the router's client proxy endpoints, and update the object adapter for such |
| | | 142 | | // connections, so that callbacks from the router can be received over such connections. |
| | 1 | 143 | | for (int i = 0; i < endpoints.Length; i++) |
| | | 144 | | { |
| | 1 | 145 | | EndpointI endpoint = endpoints[i]; |
| | | 146 | | |
| | | 147 | | // The Ice.ConnectionI object does not take the compression flag of endpoints into account, but instead |
| | | 148 | | // gets the information about whether messages should be compressed or not fro other sources. In order |
| | | 149 | | // to allow connection sharing for endpoints that differ in the value of the compression flag only, we |
| | | 150 | | // always set the compression flag to false here in this connection factory. We also clear the timeout |
| | | 151 | | // as it is no longer used for Ice 3.8. |
| | 1 | 152 | | endpoint = endpoint.compress(false).timeout(-1); |
| | | 153 | | |
| | 1 | 154 | | foreach (ICollection<ConnectionI> connections in _connections.Values) |
| | | 155 | | { |
| | 1 | 156 | | foreach (ConnectionI connection in connections) |
| | | 157 | | { |
| | 1 | 158 | | if (connection.endpoint().Equals(endpoint)) |
| | | 159 | | { |
| | 1 | 160 | | connection.setAdapter(adapter); |
| | | 161 | | } |
| | | 162 | | } |
| | | 163 | | } |
| | | 164 | | } |
| | 1 | 165 | | } |
| | 1 | 166 | | } |
| | | 167 | | |
| | | 168 | | internal void removeAdapter(ObjectAdapter adapter) |
| | | 169 | | { |
| | 1 | 170 | | lock (_mutex) |
| | | 171 | | { |
| | 1 | 172 | | if (_destroyed) |
| | | 173 | | { |
| | 1 | 174 | | return; |
| | | 175 | | } |
| | | 176 | | |
| | 1 | 177 | | foreach (ICollection<ConnectionI> connectionList in _connections.Values) |
| | | 178 | | { |
| | 1 | 179 | | foreach (ConnectionI connection in connectionList) |
| | | 180 | | { |
| | 1 | 181 | | if (connection.getAdapter() == adapter) |
| | | 182 | | { |
| | 1 | 183 | | connection.setAdapter(null); |
| | | 184 | | } |
| | | 185 | | } |
| | | 186 | | } |
| | | 187 | | } |
| | 1 | 188 | | } |
| | | 189 | | |
| | | 190 | | internal void flushAsyncBatchRequests(CompressBatch compressBatch, CommunicatorFlushBatchAsync outAsync) |
| | | 191 | | { |
| | 1 | 192 | | var c = new List<ConnectionI>(); |
| | | 193 | | |
| | 1 | 194 | | lock (_mutex) |
| | | 195 | | { |
| | 1 | 196 | | if (!_destroyed) |
| | | 197 | | { |
| | 1 | 198 | | foreach (ICollection<ConnectionI> connectionList in _connections.Values) |
| | | 199 | | { |
| | 1 | 200 | | foreach (ConnectionI conn in connectionList) |
| | | 201 | | { |
| | 1 | 202 | | if (conn.isActiveOrHolding()) |
| | | 203 | | { |
| | 1 | 204 | | c.Add(conn); |
| | | 205 | | } |
| | | 206 | | } |
| | | 207 | | } |
| | | 208 | | } |
| | 0 | 209 | | } |
| | | 210 | | |
| | 1 | 211 | | foreach (ConnectionI conn in c) |
| | | 212 | | { |
| | | 213 | | try |
| | | 214 | | { |
| | 1 | 215 | | outAsync.flushConnection(conn, compressBatch); |
| | 1 | 216 | | } |
| | 0 | 217 | | catch (LocalException) |
| | | 218 | | { |
| | | 219 | | // Ignore. |
| | 0 | 220 | | } |
| | | 221 | | } |
| | 1 | 222 | | } |
| | | 223 | | |
| | | 224 | | // Only for use by Instance. |
| | 1 | 225 | | internal OutgoingConnectionFactory(Instance instance) |
| | | 226 | | { |
| | 1 | 227 | | _instance = instance; |
| | 1 | 228 | | _connectionOptions = instance.clientConnectionOptions; |
| | 1 | 229 | | _destroyed = false; |
| | 1 | 230 | | _pendingConnectCount = 0; |
| | 1 | 231 | | } |
| | | 232 | | |
| | | 233 | | internal void setDefaultObjectAdapter(ObjectAdapter? adapter) |
| | | 234 | | { |
| | 1 | 235 | | lock (_mutex) |
| | | 236 | | { |
| | 1 | 237 | | _defaultObjectAdapter = adapter; |
| | 1 | 238 | | } |
| | 1 | 239 | | } |
| | | 240 | | |
| | | 241 | | internal ObjectAdapter? getDefaultObjectAdapter() |
| | | 242 | | { |
| | 1 | 243 | | lock (_mutex) |
| | | 244 | | { |
| | 1 | 245 | | return _defaultObjectAdapter; |
| | | 246 | | } |
| | 1 | 247 | | } |
| | | 248 | | |
| | | 249 | | private ConnectionI? findConnection(List<EndpointI> endpoints, out bool compress) |
| | | 250 | | { |
| | 1 | 251 | | lock (_mutex) |
| | | 252 | | { |
| | 1 | 253 | | if (_destroyed) |
| | | 254 | | { |
| | 0 | 255 | | throw new CommunicatorDestroyedException(); |
| | | 256 | | } |
| | | 257 | | |
| | 1 | 258 | | DefaultsAndOverrides defaultsAndOverrides = _instance.defaultsAndOverrides(); |
| | | 259 | | Debug.Assert(endpoints.Count > 0); |
| | | 260 | | |
| | 1 | 261 | | foreach (EndpointI proxyEndpoint in endpoints) |
| | | 262 | | { |
| | 1 | 263 | | EndpointI endpoint = proxyEndpoint.timeout(-1); // Clear the timeout |
| | | 264 | | |
| | 1 | 265 | | if (!_connectionsByEndpoint.TryGetValue(endpoint, out ICollection<ConnectionI>? connectionList)) |
| | | 266 | | { |
| | | 267 | | continue; |
| | | 268 | | } |
| | | 269 | | |
| | 1 | 270 | | foreach (ConnectionI connection in connectionList) |
| | | 271 | | { |
| | 1 | 272 | | if (connection.isActiveOrHolding()) // Don't return destroyed or un-validated connections |
| | | 273 | | { |
| | 1 | 274 | | compress = defaultsAndOverrides.overrideCompress ?? endpoint.compress(); |
| | 1 | 275 | | return connection; |
| | | 276 | | } |
| | | 277 | | } |
| | | 278 | | } |
| | | 279 | | |
| | 1 | 280 | | compress = false; // Satisfy the compiler |
| | 1 | 281 | | return null; |
| | | 282 | | } |
| | 1 | 283 | | } |
| | | 284 | | |
| | | 285 | | // Must be called while synchronized. |
| | | 286 | | private ConnectionI? findConnection(List<ConnectorInfo> connectors, out bool compress) |
| | | 287 | | { |
| | 1 | 288 | | DefaultsAndOverrides defaultsAndOverrides = _instance.defaultsAndOverrides(); |
| | 1 | 289 | | foreach (ConnectorInfo ci in connectors) |
| | | 290 | | { |
| | 1 | 291 | | if (_pending.ContainsKey(ci.connector)) |
| | | 292 | | { |
| | | 293 | | continue; |
| | | 294 | | } |
| | | 295 | | |
| | 1 | 296 | | if (!_connections.TryGetValue(ci.connector, out ICollection<ConnectionI>? connectionList)) |
| | | 297 | | { |
| | | 298 | | continue; |
| | | 299 | | } |
| | | 300 | | |
| | 1 | 301 | | foreach (ConnectionI connection in connectionList) |
| | | 302 | | { |
| | 1 | 303 | | if (connection.isActiveOrHolding()) // Don't return destroyed or un-validated connections |
| | | 304 | | { |
| | 1 | 305 | | compress = defaultsAndOverrides.overrideCompress ?? ci.endpoint.compress(); |
| | 1 | 306 | | return connection; |
| | | 307 | | } |
| | | 308 | | } |
| | | 309 | | } |
| | | 310 | | |
| | 1 | 311 | | compress = false; // Satisfy the compiler |
| | 1 | 312 | | return null; |
| | 1 | 313 | | } |
| | | 314 | | |
| | | 315 | | internal void incPendingConnectCount() |
| | | 316 | | { |
| | | 317 | | // Keep track of the number of pending connects. The outgoing connection factory waitUntilFinished() method |
| | | 318 | | // waits for all the pending connects to terminate before return. This ensures that the communicator client |
| | | 319 | | // thread pool isn't destroyed too soon and will still be available to execute the ice_exception() callbacks |
| | | 320 | | // for the asynchronous requests waiting on a connection to be established. |
| | | 321 | | |
| | 1 | 322 | | lock (_mutex) |
| | | 323 | | { |
| | 1 | 324 | | if (_destroyed) |
| | | 325 | | { |
| | 0 | 326 | | throw new CommunicatorDestroyedException(); |
| | | 327 | | } |
| | 1 | 328 | | ++_pendingConnectCount; |
| | 1 | 329 | | } |
| | 1 | 330 | | } |
| | | 331 | | |
| | | 332 | | internal void decPendingConnectCount() |
| | | 333 | | { |
| | 1 | 334 | | lock (_mutex) |
| | | 335 | | { |
| | 1 | 336 | | --_pendingConnectCount; |
| | | 337 | | Debug.Assert(_pendingConnectCount >= 0); |
| | 1 | 338 | | if (_destroyed && _pendingConnectCount == 0) |
| | | 339 | | { |
| | 1 | 340 | | Monitor.PulseAll(_mutex); |
| | | 341 | | } |
| | 1 | 342 | | } |
| | 1 | 343 | | } |
| | | 344 | | |
| | | 345 | | private ConnectionI? getConnection(List<ConnectorInfo> connectors, ConnectCallback cb, out bool compress) |
| | | 346 | | { |
| | 1 | 347 | | lock (_mutex) |
| | | 348 | | { |
| | 1 | 349 | | if (_destroyed) |
| | | 350 | | { |
| | 0 | 351 | | throw new CommunicatorDestroyedException(); |
| | | 352 | | } |
| | | 353 | | |
| | | 354 | | // Search for an existing connections matching one of the given endpoints. |
| | 1 | 355 | | if (findConnection(connectors, out compress) is ConnectionI connection) |
| | | 356 | | { |
| | 1 | 357 | | return connection; |
| | | 358 | | } |
| | | 359 | | |
| | 1 | 360 | | if (addToPending(cb, connectors)) |
| | | 361 | | { |
| | | 362 | | // A connection to one of our endpoints is pending. The callback will be notified once the connection |
| | | 363 | | // is established. Returning null indicates that the connection is still pending. |
| | 1 | 364 | | return null; |
| | | 365 | | } |
| | 1 | 366 | | } |
| | | 367 | | |
| | | 368 | | // No connection is pending. Call nextConnector to initiate connection establishment. Return null to indicate |
| | | 369 | | // that the connection is still pending. |
| | 1 | 370 | | cb.nextConnector(); |
| | 1 | 371 | | return null; |
| | 1 | 372 | | } |
| | | 373 | | |
| | | 374 | | private ConnectionI createConnection(Transceiver transceiver, ConnectorInfo ci) |
| | | 375 | | { |
| | 1 | 376 | | lock (_mutex) |
| | | 377 | | { |
| | | 378 | | Debug.Assert(_pending.ContainsKey(ci.connector) && transceiver != null); |
| | | 379 | | |
| | | 380 | | // Create and add the connection to the connection map. Adding the connection to the map is necessary to |
| | | 381 | | // support the interruption of the connection initialization and validation in case the communicator is |
| | | 382 | | // destroyed. |
| | | 383 | | ConnectionI connection; |
| | | 384 | | try |
| | | 385 | | { |
| | 1 | 386 | | if (_destroyed) |
| | | 387 | | { |
| | 0 | 388 | | throw new CommunicatorDestroyedException(); |
| | | 389 | | } |
| | | 390 | | |
| | 1 | 391 | | connection = new ConnectionI( |
| | 1 | 392 | | _instance, |
| | 1 | 393 | | transceiver, |
| | 1 | 394 | | ci.connector, |
| | 1 | 395 | | ci.endpoint.compress(false).timeout(-1), |
| | 1 | 396 | | adapter: _defaultObjectAdapter, |
| | 1 | 397 | | removeConnection, |
| | 1 | 398 | | _connectionOptions); |
| | 1 | 399 | | } |
| | 0 | 400 | | catch (LocalException) |
| | | 401 | | { |
| | | 402 | | try |
| | | 403 | | { |
| | 0 | 404 | | transceiver.close(); |
| | 0 | 405 | | } |
| | 0 | 406 | | catch (LocalException) |
| | | 407 | | { |
| | | 408 | | // Ignore |
| | 0 | 409 | | } |
| | 0 | 410 | | throw; |
| | | 411 | | } |
| | | 412 | | |
| | 1 | 413 | | _connections.Add(ci.connector, connection); |
| | 1 | 414 | | _connectionsByEndpoint.Add(connection.endpoint(), connection); |
| | 1 | 415 | | _connectionsByEndpoint.Add(connection.endpoint().compress(true), connection); |
| | 1 | 416 | | return connection; |
| | | 417 | | } |
| | 1 | 418 | | } |
| | | 419 | | |
| | | 420 | | private void finishGetConnection( |
| | | 421 | | List<ConnectorInfo> connectors, |
| | | 422 | | ConnectorInfo ci, |
| | | 423 | | ConnectionI connection, |
| | | 424 | | ConnectCallback cb) |
| | | 425 | | { |
| | 1 | 426 | | var connectionCallbacks = new HashSet<ConnectCallback> |
| | 1 | 427 | | { |
| | 1 | 428 | | cb |
| | 1 | 429 | | }; |
| | | 430 | | |
| | 1 | 431 | | var callbacks = new HashSet<ConnectCallback>(); |
| | 1 | 432 | | lock (_mutex) |
| | | 433 | | { |
| | 1 | 434 | | foreach (ConnectorInfo c in connectors) |
| | | 435 | | { |
| | 1 | 436 | | if (_pending.TryGetValue(c.connector, out HashSet<ConnectCallback>? s)) |
| | | 437 | | { |
| | 1 | 438 | | foreach (ConnectCallback cc in s) |
| | | 439 | | { |
| | 1 | 440 | | if (cc.hasConnector(ci)) |
| | | 441 | | { |
| | 1 | 442 | | connectionCallbacks.Add(cc); |
| | | 443 | | } |
| | | 444 | | else |
| | | 445 | | { |
| | 1 | 446 | | callbacks.Add(cc); |
| | | 447 | | } |
| | | 448 | | } |
| | 1 | 449 | | _pending.Remove(c.connector); |
| | | 450 | | } |
| | | 451 | | } |
| | | 452 | | |
| | 1 | 453 | | foreach (ConnectCallback cc in connectionCallbacks) |
| | | 454 | | { |
| | 1 | 455 | | cc.removeFromPending(); |
| | 1 | 456 | | callbacks.Remove(cc); |
| | | 457 | | } |
| | | 458 | | |
| | 1 | 459 | | foreach (ConnectCallback cc in callbacks) |
| | | 460 | | { |
| | 1 | 461 | | cc.removeFromPending(); |
| | | 462 | | } |
| | 1 | 463 | | Monitor.PulseAll(_mutex); |
| | 1 | 464 | | } |
| | | 465 | | |
| | 1 | 466 | | DefaultsAndOverrides defaultsAndOverrides = _instance.defaultsAndOverrides(); |
| | 1 | 467 | | bool compress = defaultsAndOverrides.overrideCompress ?? ci.endpoint.compress(); |
| | | 468 | | |
| | 1 | 469 | | foreach (ConnectCallback cc in callbacks) |
| | | 470 | | { |
| | 1 | 471 | | cc.getConnection(); |
| | | 472 | | } |
| | | 473 | | |
| | 1 | 474 | | foreach (ConnectCallback cc in connectionCallbacks) |
| | | 475 | | { |
| | 1 | 476 | | cc.setConnection(connection, compress); |
| | | 477 | | } |
| | 1 | 478 | | } |
| | | 479 | | |
| | | 480 | | private void finishGetConnection(List<ConnectorInfo> connectors, LocalException ex, ConnectCallback cb) |
| | | 481 | | { |
| | 1 | 482 | | var failedCallbacks = new HashSet<ConnectCallback> |
| | 1 | 483 | | { |
| | 1 | 484 | | cb |
| | 1 | 485 | | }; |
| | | 486 | | |
| | 1 | 487 | | var callbacks = new HashSet<ConnectCallback>(); |
| | 1 | 488 | | lock (_mutex) |
| | | 489 | | { |
| | 1 | 490 | | foreach (ConnectorInfo c in connectors) |
| | | 491 | | { |
| | 1 | 492 | | if (_pending.TryGetValue(c.connector, out HashSet<ConnectCallback>? s)) |
| | | 493 | | { |
| | 1 | 494 | | foreach (ConnectCallback cc in s) |
| | | 495 | | { |
| | 1 | 496 | | if (cc.removeConnectors(connectors)) |
| | | 497 | | { |
| | 1 | 498 | | failedCallbacks.Add(cc); |
| | | 499 | | } |
| | | 500 | | else |
| | | 501 | | { |
| | 1 | 502 | | callbacks.Add(cc); |
| | | 503 | | } |
| | | 504 | | } |
| | 1 | 505 | | _pending.Remove(c.connector); |
| | | 506 | | } |
| | | 507 | | } |
| | | 508 | | |
| | 1 | 509 | | foreach (ConnectCallback cc in callbacks) |
| | | 510 | | { |
| | | 511 | | Debug.Assert(!failedCallbacks.Contains(cc)); |
| | 1 | 512 | | cc.removeFromPending(); |
| | | 513 | | } |
| | 1 | 514 | | Monitor.PulseAll(_mutex); |
| | 1 | 515 | | } |
| | | 516 | | |
| | 1 | 517 | | foreach (ConnectCallback cc in callbacks) |
| | | 518 | | { |
| | 1 | 519 | | cc.getConnection(); |
| | | 520 | | } |
| | | 521 | | |
| | 1 | 522 | | foreach (ConnectCallback cc in failedCallbacks) |
| | | 523 | | { |
| | 1 | 524 | | cc.setException(ex); |
| | | 525 | | } |
| | 1 | 526 | | } |
| | | 527 | | |
| | | 528 | | private void handleConnectionException(LocalException ex, bool hasMore) |
| | | 529 | | { |
| | 1 | 530 | | TraceLevels traceLevels = _instance.traceLevels(); |
| | 1 | 531 | | if (traceLevels.network >= 2) |
| | | 532 | | { |
| | 1 | 533 | | var s = new StringBuilder(); |
| | 1 | 534 | | s.Append("connection to endpoint failed"); |
| | 1 | 535 | | if (ex is CommunicatorDestroyedException) |
| | | 536 | | { |
| | 0 | 537 | | s.Append('\n'); |
| | | 538 | | } |
| | | 539 | | else |
| | | 540 | | { |
| | 1 | 541 | | if (hasMore) |
| | | 542 | | { |
| | 1 | 543 | | s.Append(", trying next endpoint\n"); |
| | | 544 | | } |
| | | 545 | | else |
| | | 546 | | { |
| | 1 | 547 | | s.Append(" and no more endpoints to try\n"); |
| | | 548 | | } |
| | | 549 | | } |
| | 1 | 550 | | s.Append(ex); |
| | 1 | 551 | | _instance.initializationData().logger!.trace(traceLevels.networkCat, s.ToString()); |
| | | 552 | | } |
| | 1 | 553 | | } |
| | | 554 | | |
| | | 555 | | private bool addToPending(ConnectCallback cb, List<ConnectorInfo> connectors) |
| | | 556 | | { |
| | | 557 | | // Add the callback to each connector pending list. |
| | 1 | 558 | | bool found = false; |
| | 1 | 559 | | foreach (ConnectorInfo ci in connectors) |
| | | 560 | | { |
| | 1 | 561 | | if (_pending.TryGetValue(ci.connector, out HashSet<ConnectCallback>? cbs)) |
| | | 562 | | { |
| | 1 | 563 | | found = true; |
| | 1 | 564 | | cbs.Add(cb); // Add the callback to each pending connector. |
| | | 565 | | } |
| | | 566 | | } |
| | | 567 | | |
| | 1 | 568 | | if (found) |
| | | 569 | | { |
| | 1 | 570 | | return true; |
| | | 571 | | } |
| | | 572 | | |
| | | 573 | | // If no pending connection exists for the specified connectors, the caller is responsible for initiating |
| | | 574 | | // connection establishment. An empty pending list is added, and any additional callbacks for the same |
| | | 575 | | // connectors will be queued. |
| | 1 | 576 | | foreach (ConnectorInfo ci in connectors) |
| | | 577 | | { |
| | 1 | 578 | | if (!_pending.ContainsKey(ci.connector)) |
| | | 579 | | { |
| | 1 | 580 | | _pending.Add(ci.connector, []); |
| | | 581 | | } |
| | | 582 | | } |
| | 1 | 583 | | return false; |
| | | 584 | | } |
| | | 585 | | |
| | | 586 | | private void removeFromPending(ConnectCallback cb, List<ConnectorInfo> connectors) |
| | | 587 | | { |
| | 1 | 588 | | foreach (ConnectorInfo ci in connectors) |
| | | 589 | | { |
| | 1 | 590 | | if (_pending.TryGetValue(ci.connector, out HashSet<ConnectCallback>? cbs)) |
| | | 591 | | { |
| | 1 | 592 | | cbs.Remove(cb); |
| | | 593 | | } |
| | | 594 | | } |
| | 1 | 595 | | } |
| | | 596 | | |
| | | 597 | | private void removeConnection(ConnectionI connection) |
| | | 598 | | { |
| | 1 | 599 | | lock (_mutex) |
| | | 600 | | { |
| | 1 | 601 | | if (_destroyed) |
| | | 602 | | { |
| | 1 | 603 | | return; |
| | | 604 | | } |
| | | 605 | | |
| | 1 | 606 | | _connections.Remove(connection.connector(), connection); |
| | 1 | 607 | | _connectionsByEndpoint.Remove(connection.endpoint(), connection); |
| | 1 | 608 | | _connectionsByEndpoint.Remove(connection.endpoint().compress(true), connection); |
| | 1 | 609 | | } |
| | 1 | 610 | | } |
| | | 611 | | |
| | | 612 | | internal void handleException(LocalException ex, bool hasMore) |
| | | 613 | | { |
| | 1 | 614 | | TraceLevels traceLevels = _instance.traceLevels(); |
| | 1 | 615 | | if (traceLevels.network >= 2) |
| | | 616 | | { |
| | 1 | 617 | | var s = new StringBuilder(); |
| | 1 | 618 | | s.Append("couldn't resolve endpoint host"); |
| | 1 | 619 | | if (ex is CommunicatorDestroyedException) |
| | | 620 | | { |
| | 0 | 621 | | s.Append('\n'); |
| | | 622 | | } |
| | | 623 | | else |
| | | 624 | | { |
| | 1 | 625 | | if (hasMore) |
| | | 626 | | { |
| | 0 | 627 | | s.Append(", trying next endpoint\n"); |
| | | 628 | | } |
| | | 629 | | else |
| | | 630 | | { |
| | 1 | 631 | | s.Append(" and no more endpoints to try\n"); |
| | | 632 | | } |
| | | 633 | | } |
| | 1 | 634 | | s.Append(ex); |
| | 1 | 635 | | _instance.initializationData().logger!.trace(traceLevels.networkCat, s.ToString()); |
| | | 636 | | } |
| | 1 | 637 | | } |
| | | 638 | | |
| | | 639 | | private class ConnectorInfo |
| | | 640 | | { |
| | 1 | 641 | | internal ConnectorInfo(Connector c, EndpointI e) |
| | | 642 | | { |
| | 1 | 643 | | connector = c; |
| | 1 | 644 | | endpoint = e; |
| | 1 | 645 | | } |
| | | 646 | | |
| | | 647 | | public override bool Equals(object? obj) => |
| | 1 | 648 | | (obj is ConnectorInfo r) && connector.Equals(r.connector); |
| | | 649 | | |
| | 0 | 650 | | public override int GetHashCode() => connector.GetHashCode(); |
| | | 651 | | |
| | | 652 | | internal Connector connector; |
| | | 653 | | internal EndpointI endpoint; |
| | | 654 | | } |
| | | 655 | | |
| | | 656 | | private class ConnectCallback : ConnectionI.StartCallback, EndpointI_connectors |
| | | 657 | | { |
| | 1 | 658 | | internal ConnectCallback( |
| | 1 | 659 | | OutgoingConnectionFactory factory, |
| | 1 | 660 | | List<EndpointI> endpoints, |
| | 1 | 661 | | bool more, |
| | 1 | 662 | | CreateConnectionCallback cb) |
| | | 663 | | { |
| | 1 | 664 | | _factory = factory; |
| | 1 | 665 | | _endpoints = endpoints; |
| | 1 | 666 | | _hasMore = more; |
| | 1 | 667 | | _callback = cb; |
| | 1 | 668 | | _endpointsIter = 0; |
| | 1 | 669 | | } |
| | | 670 | | |
| | | 671 | | // |
| | | 672 | | // Methods from ConnectionI.StartCallback |
| | | 673 | | // |
| | | 674 | | public void connectionStartCompleted(ConnectionI connection) |
| | | 675 | | { |
| | 1 | 676 | | _observer?.detach(); |
| | 1 | 677 | | connection.activate(); |
| | | 678 | | Debug.Assert(_current is not null); |
| | 1 | 679 | | _factory.finishGetConnection(_connectors, _current, connection, this); |
| | 1 | 680 | | } |
| | | 681 | | |
| | | 682 | | public void connectionStartFailed(ConnectionI connection, LocalException ex) |
| | | 683 | | { |
| | 1 | 684 | | if (connectionStartFailedImpl(ex)) |
| | | 685 | | { |
| | 1 | 686 | | nextConnector(); |
| | | 687 | | } |
| | 1 | 688 | | } |
| | | 689 | | |
| | | 690 | | // |
| | | 691 | | // Methods from EndpointI_connectors |
| | | 692 | | // |
| | | 693 | | public void connectors(List<Connector> cons) |
| | | 694 | | { |
| | | 695 | | Debug.Assert(_currentEndpoint is not null); |
| | 1 | 696 | | foreach (Connector connector in cons) |
| | | 697 | | { |
| | 1 | 698 | | _connectors.Add(new ConnectorInfo(connector, _currentEndpoint)); |
| | | 699 | | } |
| | | 700 | | |
| | 1 | 701 | | if (_endpointsIter < _endpoints.Count) |
| | | 702 | | { |
| | 1 | 703 | | nextEndpoint(); |
| | | 704 | | } |
| | | 705 | | else |
| | | 706 | | { |
| | | 707 | | Debug.Assert(_connectors.Count > 0); |
| | | 708 | | |
| | | 709 | | // |
| | | 710 | | // We now have all the connectors for the given endpoints. We can try to obtain the |
| | | 711 | | // connection. |
| | | 712 | | // |
| | 1 | 713 | | _iter = 0; |
| | 1 | 714 | | getConnection(); |
| | | 715 | | } |
| | 1 | 716 | | } |
| | | 717 | | |
| | | 718 | | public void exception(LocalException ex) |
| | | 719 | | { |
| | 1 | 720 | | _factory.handleException(ex, _hasMore || _endpointsIter < _endpoints.Count); |
| | 1 | 721 | | if (_endpointsIter < _endpoints.Count) |
| | | 722 | | { |
| | 0 | 723 | | nextEndpoint(); |
| | | 724 | | } |
| | 1 | 725 | | else if (_connectors.Count > 0) |
| | | 726 | | { |
| | | 727 | | // |
| | | 728 | | // We now have all the connectors for the given endpoints. We can try to obtain the |
| | | 729 | | // connection. |
| | | 730 | | // |
| | 0 | 731 | | _iter = 0; |
| | 0 | 732 | | getConnection(); |
| | | 733 | | } |
| | | 734 | | else |
| | | 735 | | { |
| | 1 | 736 | | _callback.setException(ex); |
| | 1 | 737 | | _factory.decPendingConnectCount(); // Must be called last. |
| | | 738 | | } |
| | 1 | 739 | | } |
| | | 740 | | |
| | | 741 | | internal void setConnection(ConnectionI connection, bool compress) |
| | | 742 | | { |
| | | 743 | | // |
| | | 744 | | // Callback from the factory: the connection to one of the callback |
| | | 745 | | // connectors has been established. |
| | | 746 | | // |
| | 1 | 747 | | _callback.setConnection(connection, compress); |
| | 1 | 748 | | _factory.decPendingConnectCount(); // Must be called last. |
| | 1 | 749 | | } |
| | | 750 | | |
| | | 751 | | internal void setException(LocalException ex) |
| | | 752 | | { |
| | | 753 | | // |
| | | 754 | | // Callback from the factory: connection establishment failed. |
| | | 755 | | // |
| | 1 | 756 | | _callback.setException(ex); |
| | 1 | 757 | | _factory.decPendingConnectCount(); // Must be called last. |
| | 1 | 758 | | } |
| | | 759 | | |
| | 1 | 760 | | internal bool hasConnector(ConnectorInfo ci) => _connectors.Contains(ci); |
| | | 761 | | |
| | | 762 | | internal bool removeConnectors(List<ConnectorInfo> connectors) |
| | | 763 | | { |
| | 1 | 764 | | _connectors.RemoveAll(ci => connectors.Contains(ci)); |
| | 1 | 765 | | return _connectors.Count == 0; |
| | | 766 | | } |
| | | 767 | | |
| | 1 | 768 | | internal void removeFromPending() => _factory.removeFromPending(this, _connectors); |
| | | 769 | | |
| | | 770 | | internal void getConnectors() |
| | | 771 | | { |
| | | 772 | | try |
| | | 773 | | { |
| | | 774 | | // Notify the factory that there's an async connect pending. This is necessary |
| | | 775 | | // to prevent the outgoing connection factory to be destroyed before all the |
| | | 776 | | // pending asynchronous connects are finished. |
| | 1 | 777 | | _factory.incPendingConnectCount(); |
| | 1 | 778 | | } |
| | 0 | 779 | | catch (LocalException ex) |
| | | 780 | | { |
| | 0 | 781 | | _callback.setException(ex); |
| | 0 | 782 | | return; |
| | | 783 | | } |
| | | 784 | | |
| | 1 | 785 | | nextEndpoint(); |
| | 1 | 786 | | } |
| | | 787 | | |
| | | 788 | | private void nextEndpoint() |
| | | 789 | | { |
| | | 790 | | try |
| | | 791 | | { |
| | | 792 | | Debug.Assert(_endpointsIter < _endpoints.Count); |
| | 1 | 793 | | _currentEndpoint = _endpoints[_endpointsIter++]; |
| | 1 | 794 | | _currentEndpoint.connectors_async(this); |
| | 1 | 795 | | } |
| | 0 | 796 | | catch (LocalException ex) |
| | | 797 | | { |
| | 0 | 798 | | exception(ex); |
| | 0 | 799 | | } |
| | 1 | 800 | | } |
| | | 801 | | |
| | | 802 | | internal void getConnection() |
| | | 803 | | { |
| | | 804 | | try |
| | | 805 | | { |
| | | 806 | | // If all the connectors have been created, we ask the factory to get a connection. |
| | 1 | 807 | | ConnectionI? connection = _factory.getConnection(_connectors, this, out bool compress); |
| | 1 | 808 | | if (connection is null) |
| | | 809 | | { |
| | | 810 | | // A null return value from getConnection indicates that the connection is being established and |
| | | 811 | | // the callback will be notified when the connection establishment is done. |
| | 1 | 812 | | return; |
| | | 813 | | } |
| | | 814 | | |
| | 1 | 815 | | _callback.setConnection(connection, compress); |
| | 1 | 816 | | _factory.decPendingConnectCount(); // Must be called last. |
| | 1 | 817 | | } |
| | 0 | 818 | | catch (LocalException ex) |
| | | 819 | | { |
| | 0 | 820 | | _callback.setException(ex); |
| | 0 | 821 | | _factory.decPendingConnectCount(); // Must be called last. |
| | 0 | 822 | | } |
| | 1 | 823 | | } |
| | | 824 | | |
| | | 825 | | internal void nextConnector() |
| | | 826 | | { |
| | | 827 | | while (true) |
| | | 828 | | { |
| | | 829 | | try |
| | | 830 | | { |
| | | 831 | | Debug.Assert(_iter < _connectors.Count); |
| | 1 | 832 | | _current = _connectors[_iter++]; |
| | | 833 | | Debug.Assert(_current is not null); |
| | | 834 | | |
| | 1 | 835 | | if ( |
| | 1 | 836 | | _factory._instance.initializationData().observer is |
| | 1 | 837 | | Instrumentation.CommunicatorObserver observer) |
| | | 838 | | { |
| | 1 | 839 | | _observer = observer.getConnectionEstablishmentObserver( |
| | 1 | 840 | | _current.endpoint, |
| | 1 | 841 | | _current.connector.ToString()!); |
| | | 842 | | |
| | 1 | 843 | | _observer?.attach(); |
| | | 844 | | } |
| | | 845 | | |
| | 1 | 846 | | if (_factory._instance.traceLevels().network >= 2) |
| | | 847 | | { |
| | 1 | 848 | | var s = new StringBuilder("trying to establish "); |
| | 1 | 849 | | s.Append(_current.endpoint.protocol()); |
| | 1 | 850 | | s.Append(" connection to "); |
| | 1 | 851 | | s.Append(_current.connector.ToString()); |
| | 1 | 852 | | _factory._instance.initializationData().logger!.trace( |
| | 1 | 853 | | _factory._instance.traceLevels().networkCat, s.ToString()); |
| | | 854 | | } |
| | | 855 | | |
| | 1 | 856 | | ConnectionI connection = _factory.createConnection(_current.connector.connect(), _current); |
| | 1 | 857 | | connection.start(this); |
| | 1 | 858 | | } |
| | 1 | 859 | | catch (LocalException ex) |
| | | 860 | | { |
| | 1 | 861 | | if (_factory._instance.traceLevels().network >= 2) |
| | | 862 | | { |
| | | 863 | | Debug.Assert(_current is not null); |
| | 1 | 864 | | var s = new StringBuilder("failed to establish "); |
| | 1 | 865 | | s.Append(_current.endpoint.protocol()); |
| | 1 | 866 | | s.Append(" connection to "); |
| | 1 | 867 | | s.Append(_current.connector.ToString()); |
| | 1 | 868 | | s.Append('\n'); |
| | 1 | 869 | | s.Append(ex); |
| | 1 | 870 | | _factory._instance.initializationData().logger!.trace( |
| | 1 | 871 | | _factory._instance.traceLevels().networkCat, s.ToString()); |
| | | 872 | | } |
| | | 873 | | |
| | 1 | 874 | | if (connectionStartFailedImpl(ex)) |
| | | 875 | | { |
| | 0 | 876 | | continue; |
| | | 877 | | } |
| | 1 | 878 | | } |
| | | 879 | | break; |
| | | 880 | | } |
| | 1 | 881 | | } |
| | | 882 | | |
| | | 883 | | private bool connectionStartFailedImpl(LocalException ex) |
| | | 884 | | { |
| | 1 | 885 | | if (_observer != null) |
| | | 886 | | { |
| | 1 | 887 | | _observer.failed(ex.ice_id()); |
| | 1 | 888 | | _observer.detach(); |
| | | 889 | | } |
| | 1 | 890 | | _factory.handleConnectionException(ex, _hasMore || _iter < _connectors.Count); // just logging |
| | | 891 | | |
| | | 892 | | // We stop on ConnectTimeoutException to fail reasonably fast when the endpoint has many connectors |
| | | 893 | | // (IP addresses). |
| | 1 | 894 | | if (_iter < _connectors.Count && !(ex is CommunicatorDestroyedException or ConnectTimeoutException)) |
| | | 895 | | { |
| | 1 | 896 | | return true; // keep going |
| | | 897 | | } |
| | | 898 | | |
| | 1 | 899 | | _factory.finishGetConnection(_connectors, ex, this); |
| | 1 | 900 | | return false; |
| | | 901 | | } |
| | | 902 | | |
| | | 903 | | private readonly OutgoingConnectionFactory _factory; |
| | | 904 | | private readonly bool _hasMore; |
| | | 905 | | private readonly CreateConnectionCallback _callback; |
| | | 906 | | private readonly List<EndpointI> _endpoints; |
| | | 907 | | private int _endpointsIter; |
| | | 908 | | private EndpointI? _currentEndpoint; |
| | 1 | 909 | | private readonly List<ConnectorInfo> _connectors = []; |
| | | 910 | | private int _iter; |
| | | 911 | | private ConnectorInfo? _current; |
| | | 912 | | private Instrumentation.Observer? _observer; |
| | | 913 | | } |
| | | 914 | | |
| | | 915 | | private readonly Instance _instance; |
| | | 916 | | private readonly ConnectionOptions _connectionOptions; |
| | | 917 | | private bool _destroyed; |
| | | 918 | | |
| | 1 | 919 | | private readonly MultiDictionary<Connector, ConnectionI> _connections = []; |
| | 1 | 920 | | private readonly MultiDictionary<EndpointI, ConnectionI> _connectionsByEndpoint = []; |
| | 1 | 921 | | private readonly Dictionary<Connector, HashSet<ConnectCallback>> _pending = []; |
| | | 922 | | private int _pendingConnectCount; |
| | | 923 | | |
| | | 924 | | private ObjectAdapter? _defaultObjectAdapter; |
| | 1 | 925 | | private readonly object _mutex = new(); |
| | | 926 | | } |
| | | 927 | | |
| | | 928 | | internal sealed class IncomingConnectionFactory : EventHandler, ConnectionI.StartCallback |
| | | 929 | | { |
| | | 930 | | internal void activate() |
| | | 931 | | { |
| | | 932 | | lock (_mutex) |
| | | 933 | | { |
| | | 934 | | setState(StateActive); |
| | | 935 | | } |
| | | 936 | | } |
| | | 937 | | |
| | | 938 | | internal void hold() |
| | | 939 | | { |
| | | 940 | | lock (_mutex) |
| | | 941 | | { |
| | | 942 | | setState(StateHolding); |
| | | 943 | | } |
| | | 944 | | } |
| | | 945 | | |
| | | 946 | | internal void destroy() |
| | | 947 | | { |
| | | 948 | | lock (_mutex) |
| | | 949 | | { |
| | | 950 | | setState(StateClosed); |
| | | 951 | | } |
| | | 952 | | } |
| | | 953 | | |
| | | 954 | | internal void updateConnectionObservers() |
| | | 955 | | { |
| | | 956 | | lock (_mutex) |
| | | 957 | | { |
| | | 958 | | foreach (ConnectionI connection in _connections) |
| | | 959 | | { |
| | | 960 | | connection.updateObserver(); |
| | | 961 | | } |
| | | 962 | | } |
| | | 963 | | } |
| | | 964 | | |
| | | 965 | | internal void waitUntilHolding() |
| | | 966 | | { |
| | | 967 | | ICollection<ConnectionI> connections; |
| | | 968 | | |
| | | 969 | | lock (_mutex) |
| | | 970 | | { |
| | | 971 | | // First we wait until the connection factory itself is in holding state. |
| | | 972 | | while (_state < StateHolding) |
| | | 973 | | { |
| | | 974 | | Monitor.Wait(_mutex); |
| | | 975 | | } |
| | | 976 | | |
| | | 977 | | // We want to wait until all connections are in holding state outside the thread synchronization. |
| | | 978 | | connections = new List<ConnectionI>(_connections); |
| | | 979 | | } |
| | | 980 | | |
| | | 981 | | // Now we wait until each connection is in holding state. |
| | | 982 | | foreach (ConnectionI connection in connections) |
| | | 983 | | { |
| | | 984 | | connection.waitUntilHolding(); |
| | | 985 | | } |
| | | 986 | | } |
| | | 987 | | |
| | | 988 | | internal void waitUntilFinished() |
| | | 989 | | { |
| | | 990 | | ICollection<ConnectionI> connections; |
| | | 991 | | |
| | | 992 | | lock (_mutex) |
| | | 993 | | { |
| | | 994 | | // First we wait until the factory is destroyed. If we are using an acceptor, we also wait for it to be |
| | | 995 | | // closed. |
| | | 996 | | while (_state != StateFinished) |
| | | 997 | | { |
| | | 998 | | Monitor.Wait(_mutex); |
| | | 999 | | } |
| | | 1000 | | |
| | | 1001 | | // We want to wait until all connections are finished outside the thread synchronization. |
| | | 1002 | | connections = new List<ConnectionI>(_connections); |
| | | 1003 | | } |
| | | 1004 | | |
| | | 1005 | | foreach (ConnectionI connection in connections) |
| | | 1006 | | { |
| | | 1007 | | connection.waitUntilFinished(); |
| | | 1008 | | } |
| | | 1009 | | |
| | | 1010 | | lock (_mutex) |
| | | 1011 | | { |
| | | 1012 | | _connections.Clear(); |
| | | 1013 | | } |
| | | 1014 | | } |
| | | 1015 | | |
| | | 1016 | | internal EndpointI endpoint() |
| | | 1017 | | { |
| | | 1018 | | lock (_mutex) |
| | | 1019 | | { |
| | | 1020 | | return _endpoint; |
| | | 1021 | | } |
| | | 1022 | | } |
| | | 1023 | | |
| | | 1024 | | internal ICollection<ConnectionI> connections() |
| | | 1025 | | { |
| | | 1026 | | lock (_mutex) |
| | | 1027 | | { |
| | | 1028 | | ICollection<ConnectionI> connections = []; |
| | | 1029 | | |
| | | 1030 | | // Only copy connections which have not been destroyed. |
| | | 1031 | | foreach (ConnectionI connection in _connections) |
| | | 1032 | | { |
| | | 1033 | | if (connection.isActiveOrHolding()) |
| | | 1034 | | { |
| | | 1035 | | connections.Add(connection); |
| | | 1036 | | } |
| | | 1037 | | } |
| | | 1038 | | |
| | | 1039 | | return connections; |
| | | 1040 | | } |
| | | 1041 | | } |
| | | 1042 | | |
| | | 1043 | | internal void flushAsyncBatchRequests(CompressBatch compressBatch, CommunicatorFlushBatchAsync outAsync) |
| | | 1044 | | { |
| | | 1045 | | // connections() is synchronized, no need to synchronize here. |
| | | 1046 | | foreach (ConnectionI connection in connections()) |
| | | 1047 | | { |
| | | 1048 | | try |
| | | 1049 | | { |
| | | 1050 | | outAsync.flushConnection(connection, compressBatch); |
| | | 1051 | | } |
| | | 1052 | | catch (LocalException) |
| | | 1053 | | { |
| | | 1054 | | // Ignore. |
| | | 1055 | | } |
| | | 1056 | | } |
| | | 1057 | | } |
| | | 1058 | | |
| | | 1059 | | // |
| | | 1060 | | // Operations from EventHandler. |
| | | 1061 | | // |
| | | 1062 | | public override bool startAsync(int operation, AsyncCallback completedCallback) |
| | | 1063 | | { |
| | | 1064 | | if (_state >= StateClosed) |
| | | 1065 | | { |
| | | 1066 | | return false; |
| | | 1067 | | } |
| | | 1068 | | |
| | | 1069 | | // Run the IO operation on a .NET thread pool thread to ensure the IO operation won't be interrupted if the |
| | | 1070 | | // Ice thread pool thread is terminated. |
| | | 1071 | | Task.Run(() => |
| | | 1072 | | { |
| | | 1073 | | lock (_mutex) |
| | | 1074 | | { |
| | | 1075 | | if (_state >= StateClosed) |
| | | 1076 | | { |
| | | 1077 | | completedCallback(this); |
| | | 1078 | | return; |
| | | 1079 | | } |
| | | 1080 | | |
| | | 1081 | | try |
| | | 1082 | | { |
| | | 1083 | | Debug.Assert(_acceptor is not null); |
| | | 1084 | | if (_acceptor.startAccept(completedCallback, this)) |
| | | 1085 | | { |
| | | 1086 | | completedCallback(this); |
| | | 1087 | | } |
| | | 1088 | | } |
| | | 1089 | | catch (LocalException ex) |
| | | 1090 | | { |
| | | 1091 | | _acceptorException = ex; |
| | | 1092 | | completedCallback(this); |
| | | 1093 | | } |
| | | 1094 | | } |
| | | 1095 | | }); |
| | | 1096 | | |
| | | 1097 | | return true; |
| | | 1098 | | } |
| | | 1099 | | |
| | | 1100 | | public override bool finishAsync(int operation) |
| | | 1101 | | { |
| | | 1102 | | try |
| | | 1103 | | { |
| | | 1104 | | if (_acceptorException != null) |
| | | 1105 | | { |
| | | 1106 | | throw _acceptorException; |
| | | 1107 | | } |
| | | 1108 | | Debug.Assert(_acceptor is not null); |
| | | 1109 | | _acceptor.finishAccept(); |
| | | 1110 | | } |
| | | 1111 | | catch (LocalException ex) |
| | | 1112 | | { |
| | | 1113 | | _acceptorException = null; |
| | | 1114 | | if (_warn) |
| | | 1115 | | { |
| | | 1116 | | _instance.initializationData().logger!.warning($"error accepting connection:\n{ex}\n{_acceptor}"); |
| | | 1117 | | } |
| | | 1118 | | } |
| | | 1119 | | return _state < StateClosed; |
| | | 1120 | | } |
| | | 1121 | | |
| | | 1122 | | public override void message(ThreadPoolCurrent current) |
| | | 1123 | | { |
| | | 1124 | | ConnectionI? connection = null; |
| | | 1125 | | |
| | | 1126 | | using var msg = new ThreadPoolMessage(current, this); |
| | | 1127 | | |
| | | 1128 | | lock (_mutex) |
| | | 1129 | | { |
| | | 1130 | | if (!msg.startIOScope()) |
| | | 1131 | | { |
| | | 1132 | | return; |
| | | 1133 | | } |
| | | 1134 | | |
| | | 1135 | | try |
| | | 1136 | | { |
| | | 1137 | | if (_state >= StateClosed) |
| | | 1138 | | { |
| | | 1139 | | return; |
| | | 1140 | | } |
| | | 1141 | | else if (_state == StateHolding) |
| | | 1142 | | { |
| | | 1143 | | return; |
| | | 1144 | | } |
| | | 1145 | | |
| | | 1146 | | if (!_acceptorStarted) |
| | | 1147 | | { |
| | | 1148 | | return; |
| | | 1149 | | } |
| | | 1150 | | |
| | | 1151 | | // |
| | | 1152 | | // Now accept a new connection. |
| | | 1153 | | // |
| | | 1154 | | Transceiver? transceiver = null; |
| | | 1155 | | try |
| | | 1156 | | { |
| | | 1157 | | Debug.Assert(_acceptor is not null); |
| | | 1158 | | transceiver = _acceptor.accept(); |
| | | 1159 | | |
| | | 1160 | | if (_maxConnections > 0 && _connections.Count == _maxConnections) |
| | | 1161 | | { |
| | | 1162 | | // Can't accept more connections, so we abort this transport connection. |
| | | 1163 | | |
| | | 1164 | | if (_instance.traceLevels().network >= 2) |
| | | 1165 | | { |
| | | 1166 | | _instance.initializationData().logger!.trace( |
| | | 1167 | | _instance.traceLevels().networkCat, |
| | | 1168 | | $"rejecting new {_endpoint.protocol()} connection\n{transceiver}\nbecause the maximum nu |
| | | 1169 | | } |
| | | 1170 | | |
| | | 1171 | | try |
| | | 1172 | | { |
| | | 1173 | | transceiver.close(); |
| | | 1174 | | } |
| | | 1175 | | catch |
| | | 1176 | | { |
| | | 1177 | | // Ignore |
| | | 1178 | | } |
| | | 1179 | | transceiver.destroy(); |
| | | 1180 | | return; |
| | | 1181 | | } |
| | | 1182 | | |
| | | 1183 | | if (_instance.traceLevels().network >= 2) |
| | | 1184 | | { |
| | | 1185 | | var s = new StringBuilder("trying to accept "); |
| | | 1186 | | s.Append(_endpoint.protocol()); |
| | | 1187 | | s.Append(" connection\n"); |
| | | 1188 | | s.Append(transceiver.ToString()); |
| | | 1189 | | _instance.initializationData().logger!.trace(_instance.traceLevels().networkCat, s.ToString()); |
| | | 1190 | | } |
| | | 1191 | | } |
| | | 1192 | | catch (LocalException ex) |
| | | 1193 | | { |
| | | 1194 | | if (_warn) |
| | | 1195 | | { |
| | | 1196 | | _instance.initializationData().logger!.warning( |
| | | 1197 | | $"error accepting connection:\n{ex}\n{_acceptor}"); |
| | | 1198 | | } |
| | | 1199 | | return; |
| | | 1200 | | } |
| | | 1201 | | |
| | | 1202 | | Debug.Assert(transceiver is not null); |
| | | 1203 | | |
| | | 1204 | | try |
| | | 1205 | | { |
| | | 1206 | | connection = new ConnectionI( |
| | | 1207 | | _instance, |
| | | 1208 | | transceiver, |
| | | 1209 | | connector: null, |
| | | 1210 | | _endpoint, |
| | | 1211 | | _adapter, |
| | | 1212 | | removeConnection, |
| | | 1213 | | _connectionOptions); |
| | | 1214 | | } |
| | | 1215 | | catch (LocalException ex) |
| | | 1216 | | { |
| | | 1217 | | try |
| | | 1218 | | { |
| | | 1219 | | transceiver.close(); |
| | | 1220 | | } |
| | | 1221 | | catch (LocalException) |
| | | 1222 | | { |
| | | 1223 | | // Ignore |
| | | 1224 | | } |
| | | 1225 | | |
| | | 1226 | | if (_warn) |
| | | 1227 | | { |
| | | 1228 | | _instance.initializationData().logger!.warning( |
| | | 1229 | | $"error accepting connection:\n{ex}\n{_acceptor}"); |
| | | 1230 | | } |
| | | 1231 | | return; |
| | | 1232 | | } |
| | | 1233 | | |
| | | 1234 | | _connections.Add(connection); |
| | | 1235 | | } |
| | | 1236 | | finally |
| | | 1237 | | { |
| | | 1238 | | msg.finishIOScope(); |
| | | 1239 | | } |
| | | 1240 | | } |
| | | 1241 | | |
| | | 1242 | | Debug.Assert(connection != null); |
| | | 1243 | | connection.start(this); |
| | | 1244 | | } |
| | | 1245 | | |
| | | 1246 | | public override void finished(ThreadPoolCurrent current) |
| | | 1247 | | { |
| | | 1248 | | lock (_mutex) |
| | | 1249 | | { |
| | | 1250 | | if (_state < StateClosed) |
| | | 1251 | | { |
| | | 1252 | | return; |
| | | 1253 | | } |
| | | 1254 | | |
| | | 1255 | | Debug.Assert(_state >= StateClosed); |
| | | 1256 | | setState(StateFinished); |
| | | 1257 | | } |
| | | 1258 | | } |
| | | 1259 | | |
| | | 1260 | | public override string ToString() => _transceiver?.ToString() ?? _acceptor?.ToString() ?? ""; |
| | | 1261 | | |
| | | 1262 | | // |
| | | 1263 | | // Operations from ConnectionI.StartCallback |
| | | 1264 | | // |
| | | 1265 | | public void connectionStartCompleted(ConnectionI connection) |
| | | 1266 | | { |
| | | 1267 | | lock (_mutex) |
| | | 1268 | | { |
| | | 1269 | | // Initially, connections are in the holding state. If the factory is active we activate the connection. |
| | | 1270 | | if (_state == StateActive) |
| | | 1271 | | { |
| | | 1272 | | connection.activate(); |
| | | 1273 | | } |
| | | 1274 | | } |
| | | 1275 | | } |
| | | 1276 | | |
| | | 1277 | | public void connectionStartFailed(ConnectionI connection, LocalException ex) |
| | | 1278 | | { |
| | | 1279 | | // Do not warn about connection exceptions here. The connection is not yet validated. |
| | | 1280 | | } |
| | | 1281 | | |
| | | 1282 | | internal IncomingConnectionFactory(Instance instance, EndpointI endpoint, ObjectAdapter adapter) |
| | | 1283 | | { |
| | | 1284 | | _instance = instance; |
| | | 1285 | | _connectionOptions = instance.serverConnectionOptions(adapter.getName()); |
| | | 1286 | | |
| | | 1287 | | // Meaningful only for non-datagram (non-UDP) connections. |
| | | 1288 | | _maxConnections = endpoint.datagram() ? 0 : |
| | | 1289 | | instance.initializationData().properties!.getPropertyAsInt($"{adapter.getName()}.MaxConnections"); |
| | | 1290 | | |
| | | 1291 | | _endpoint = endpoint; |
| | | 1292 | | _adapter = adapter; |
| | | 1293 | | _warn = _instance.initializationData().properties!.getIcePropertyAsInt("Ice.Warn.Connections") > 0; |
| | | 1294 | | _connections = []; |
| | | 1295 | | _state = StateHolding; |
| | | 1296 | | _acceptorStarted = false; |
| | | 1297 | | |
| | | 1298 | | DefaultsAndOverrides defaultsAndOverrides = _instance.defaultsAndOverrides(); |
| | | 1299 | | |
| | | 1300 | | if (defaultsAndOverrides.overrideCompress is not null) |
| | | 1301 | | { |
| | | 1302 | | _endpoint = _endpoint.compress(defaultsAndOverrides.overrideCompress.Value); |
| | | 1303 | | } |
| | | 1304 | | |
| | | 1305 | | try |
| | | 1306 | | { |
| | | 1307 | | _transceiver = _endpoint.transceiver(); |
| | | 1308 | | if (_transceiver != null) |
| | | 1309 | | { |
| | | 1310 | | // All this is for UDP "connections". |
| | | 1311 | | |
| | | 1312 | | if (_instance.traceLevels().network >= 2) |
| | | 1313 | | { |
| | | 1314 | | var s = new StringBuilder("attempting to bind to "); |
| | | 1315 | | s.Append(_endpoint.protocol()); |
| | | 1316 | | s.Append(" socket\n"); |
| | | 1317 | | s.Append(_transceiver.ToString()); |
| | | 1318 | | _instance.initializationData().logger!.trace(_instance.traceLevels().networkCat, s.ToString()); |
| | | 1319 | | } |
| | | 1320 | | _endpoint = _transceiver.bind(); |
| | | 1321 | | |
| | | 1322 | | var connection = new ConnectionI( |
| | | 1323 | | _instance, |
| | | 1324 | | _transceiver, |
| | | 1325 | | connector: null, |
| | | 1326 | | _endpoint, |
| | | 1327 | | adapter, |
| | | 1328 | | removeFromFactory: null, |
| | | 1329 | | _connectionOptions); |
| | | 1330 | | connection.startAndWait(); |
| | | 1331 | | _connections.Add(connection); |
| | | 1332 | | Debug.Assert(_maxConnections == 0); // UDP so no max connections. |
| | | 1333 | | } |
| | | 1334 | | else |
| | | 1335 | | { |
| | | 1336 | | createAcceptor(); |
| | | 1337 | | } |
| | | 1338 | | } |
| | | 1339 | | catch (System.Exception ex) |
| | | 1340 | | { |
| | | 1341 | | // |
| | | 1342 | | // Clean up. |
| | | 1343 | | // |
| | | 1344 | | if (_transceiver != null) |
| | | 1345 | | { |
| | | 1346 | | try |
| | | 1347 | | { |
| | | 1348 | | _transceiver.close(); |
| | | 1349 | | } |
| | | 1350 | | catch (LocalException) |
| | | 1351 | | { |
| | | 1352 | | // Ignore |
| | | 1353 | | } |
| | | 1354 | | } |
| | | 1355 | | |
| | | 1356 | | _state = StateFinished; |
| | | 1357 | | _connections.Clear(); |
| | | 1358 | | |
| | | 1359 | | if (ex is LocalException) |
| | | 1360 | | { |
| | | 1361 | | throw; |
| | | 1362 | | } |
| | | 1363 | | else |
| | | 1364 | | { |
| | | 1365 | | throw new SyscallException(ex); |
| | | 1366 | | } |
| | | 1367 | | } |
| | | 1368 | | } |
| | | 1369 | | |
| | | 1370 | | private const int StateActive = 0; |
| | | 1371 | | private const int StateHolding = 1; |
| | | 1372 | | private const int StateClosed = 2; |
| | | 1373 | | private const int StateFinished = 3; |
| | | 1374 | | |
| | | 1375 | | private void setState(int state) |
| | | 1376 | | { |
| | | 1377 | | if (_state == state) // Don't switch twice. |
| | | 1378 | | { |
| | | 1379 | | return; |
| | | 1380 | | } |
| | | 1381 | | |
| | | 1382 | | switch (state) |
| | | 1383 | | { |
| | | 1384 | | case StateActive: |
| | | 1385 | | { |
| | | 1386 | | if (_state != StateHolding) // Can only switch from holding to active. |
| | | 1387 | | { |
| | | 1388 | | return; |
| | | 1389 | | } |
| | | 1390 | | |
| | | 1391 | | if (_acceptor is not null) |
| | | 1392 | | { |
| | | 1393 | | if (_instance.traceLevels().network >= 1) |
| | | 1394 | | { |
| | | 1395 | | _instance.initializationData().logger!.trace( |
| | | 1396 | | _instance.traceLevels().networkCat, |
| | | 1397 | | $"accepting {_endpoint.protocol()} connections at {_acceptor}"); |
| | | 1398 | | } |
| | | 1399 | | _adapter.getThreadPool().register(this, SocketOperation.Read); |
| | | 1400 | | } |
| | | 1401 | | |
| | | 1402 | | foreach (ConnectionI connection in _connections) |
| | | 1403 | | { |
| | | 1404 | | connection.activate(); |
| | | 1405 | | } |
| | | 1406 | | break; |
| | | 1407 | | } |
| | | 1408 | | |
| | | 1409 | | case StateHolding: |
| | | 1410 | | { |
| | | 1411 | | if (_state != StateActive) // Can only switch from active to holding. |
| | | 1412 | | { |
| | | 1413 | | return; |
| | | 1414 | | } |
| | | 1415 | | |
| | | 1416 | | // Stop accepting new connections. |
| | | 1417 | | if (_acceptor is not null) |
| | | 1418 | | { |
| | | 1419 | | if (_instance.traceLevels().network >= 1) |
| | | 1420 | | { |
| | | 1421 | | _instance.initializationData().logger!.trace( |
| | | 1422 | | _instance.traceLevels().networkCat, |
| | | 1423 | | $"holding {_endpoint.protocol()} connections at {_acceptor}"); |
| | | 1424 | | } |
| | | 1425 | | _adapter.getThreadPool().unregister(this, SocketOperation.Read); |
| | | 1426 | | } |
| | | 1427 | | |
| | | 1428 | | foreach (ConnectionI connection in _connections) |
| | | 1429 | | { |
| | | 1430 | | connection.hold(); |
| | | 1431 | | } |
| | | 1432 | | break; |
| | | 1433 | | } |
| | | 1434 | | |
| | | 1435 | | case StateClosed: |
| | | 1436 | | { |
| | | 1437 | | if (_acceptorStarted) |
| | | 1438 | | { |
| | | 1439 | | _acceptorStarted = false; |
| | | 1440 | | _adapter.getThreadPool().finish(this); |
| | | 1441 | | closeAcceptor(); |
| | | 1442 | | } |
| | | 1443 | | else |
| | | 1444 | | { |
| | | 1445 | | state = StateFinished; |
| | | 1446 | | } |
| | | 1447 | | |
| | | 1448 | | foreach (ConnectionI connection in _connections) |
| | | 1449 | | { |
| | | 1450 | | connection.destroy(ConnectionI.ObjectAdapterDeactivated); |
| | | 1451 | | } |
| | | 1452 | | break; |
| | | 1453 | | } |
| | | 1454 | | |
| | | 1455 | | case StateFinished: |
| | | 1456 | | { |
| | | 1457 | | Debug.Assert(_state == StateClosed); |
| | | 1458 | | break; |
| | | 1459 | | } |
| | | 1460 | | } |
| | | 1461 | | |
| | | 1462 | | _state = state; |
| | | 1463 | | System.Threading.Monitor.PulseAll(_mutex); |
| | | 1464 | | } |
| | | 1465 | | |
| | | 1466 | | private void createAcceptor() |
| | | 1467 | | { |
| | | 1468 | | try |
| | | 1469 | | { |
| | | 1470 | | Debug.Assert(!_acceptorStarted); |
| | | 1471 | | _acceptor = _endpoint.acceptor(_adapter.getName(), _adapter.getServerAuthenticationOptions()); |
| | | 1472 | | Debug.Assert(_acceptor != null); |
| | | 1473 | | |
| | | 1474 | | if (_instance.traceLevels().network >= 2) |
| | | 1475 | | { |
| | | 1476 | | var s = new StringBuilder("attempting to bind to "); |
| | | 1477 | | s.Append(_endpoint.protocol()); |
| | | 1478 | | s.Append(" socket "); |
| | | 1479 | | s.Append(_acceptor.ToString()); |
| | | 1480 | | _instance.initializationData().logger!.trace(_instance.traceLevels().networkCat, s.ToString()); |
| | | 1481 | | } |
| | | 1482 | | _endpoint = _acceptor.listen(); |
| | | 1483 | | |
| | | 1484 | | if (_instance.traceLevels().network >= 1) |
| | | 1485 | | { |
| | | 1486 | | var s = new StringBuilder("listening for "); |
| | | 1487 | | s.Append(_endpoint.protocol()); |
| | | 1488 | | s.Append(" connections\n"); |
| | | 1489 | | s.Append(_acceptor.toDetailedString()); |
| | | 1490 | | _instance.initializationData().logger!.trace(_instance.traceLevels().networkCat, s.ToString()); |
| | | 1491 | | } |
| | | 1492 | | |
| | | 1493 | | _adapter.getThreadPool().initialize(this); |
| | | 1494 | | |
| | | 1495 | | if (_state == StateActive) |
| | | 1496 | | { |
| | | 1497 | | _adapter.getThreadPool().register(this, SocketOperation.Read); |
| | | 1498 | | } |
| | | 1499 | | |
| | | 1500 | | _acceptorStarted = true; |
| | | 1501 | | } |
| | | 1502 | | catch (SystemException) |
| | | 1503 | | { |
| | | 1504 | | _acceptor?.close(); |
| | | 1505 | | throw; |
| | | 1506 | | } |
| | | 1507 | | } |
| | | 1508 | | |
| | | 1509 | | private void closeAcceptor() |
| | | 1510 | | { |
| | | 1511 | | Debug.Assert(_acceptor != null); |
| | | 1512 | | |
| | | 1513 | | if (_instance.traceLevels().network >= 1) |
| | | 1514 | | { |
| | | 1515 | | var s = new StringBuilder("stopping to accept "); |
| | | 1516 | | s.Append(_endpoint.protocol()); |
| | | 1517 | | s.Append(" connections at "); |
| | | 1518 | | s.Append(_acceptor.ToString()); |
| | | 1519 | | _instance.initializationData().logger!.trace(_instance.traceLevels().networkCat, s.ToString()); |
| | | 1520 | | } |
| | | 1521 | | |
| | | 1522 | | Debug.Assert(!_acceptorStarted); |
| | | 1523 | | _acceptor.close(); |
| | | 1524 | | } |
| | | 1525 | | |
| | | 1526 | | private void removeConnection(ConnectionI connection) |
| | | 1527 | | { |
| | | 1528 | | lock (_mutex) |
| | | 1529 | | { |
| | | 1530 | | if (_state is StateActive or StateHolding) |
| | | 1531 | | { |
| | | 1532 | | _connections.Remove(connection); |
| | | 1533 | | } |
| | | 1534 | | // else it's already being cleaned up. |
| | | 1535 | | } |
| | | 1536 | | } |
| | | 1537 | | |
| | | 1538 | | private readonly Instance _instance; |
| | | 1539 | | private readonly ConnectionOptions _connectionOptions; |
| | | 1540 | | |
| | | 1541 | | private readonly int _maxConnections; |
| | | 1542 | | |
| | | 1543 | | private Acceptor? _acceptor; |
| | | 1544 | | private readonly Transceiver? _transceiver; |
| | | 1545 | | private EndpointI _endpoint; |
| | | 1546 | | private readonly ObjectAdapter _adapter; |
| | | 1547 | | |
| | | 1548 | | private readonly bool _warn; |
| | | 1549 | | |
| | | 1550 | | private readonly HashSet<ConnectionI> _connections; |
| | | 1551 | | |
| | | 1552 | | private int _state; |
| | | 1553 | | private bool _acceptorStarted; |
| | | 1554 | | private LocalException? _acceptorException; |
| | | 1555 | | private readonly object _mutex = new(); |
| | | 1556 | | } |