GCC Code Coverage Report
Directory: ../ Exec Total Coverage
File: /home/iojs/build/workspace/node-test-commit-linux-coverage-daily/nodes/benchmark/out/../src/node_http2.h Lines: 201 209 96.2 %
Date: 2021-01-16 04:10:54 Branches: 33 40 82.5 %

Line Branch Exec Source
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#ifndef SRC_NODE_HTTP2_H_
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#define SRC_NODE_HTTP2_H_
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4
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
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6
// FIXME(joyeecheung): nghttp2.h needs stdint.h to compile on Windows
7
#include <cstdint>
8
#include "nghttp2/nghttp2.h"
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10
#include "allocated_buffer.h"
11
#include "aliased_struct.h"
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#include "node_http2_state.h"
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#include "node_http_common.h"
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#include "node_mem.h"
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#include "node_perf.h"
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#include "stream_base.h"
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#include "string_bytes.h"
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19
#include <algorithm>
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#include <queue>
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namespace node {
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namespace http2 {
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// Constants in all caps are exported as user-facing constants
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// in JavaScript. Constants using the kName pattern are internal
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// only.
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29
// We strictly limit the number of outstanding unacknowledged PINGS a user
30
// may send in order to prevent abuse. The current default cap is 10. The
31
// user may set a different limit using a per Http2Session configuration
32
// option.
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constexpr size_t kDefaultMaxPings = 10;
34
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// Also strictly limit the number of outstanding SETTINGS frames a user sends
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constexpr size_t kDefaultMaxSettings = 10;
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// Default maximum total memory cap for Http2Session.
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constexpr uint64_t kDefaultMaxSessionMemory = 10000000;
40
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// These are the standard HTTP/2 defaults as specified by the RFC
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constexpr uint32_t DEFAULT_SETTINGS_HEADER_TABLE_SIZE = 4096;
43
constexpr uint32_t DEFAULT_SETTINGS_ENABLE_PUSH = 1;
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constexpr uint32_t DEFAULT_SETTINGS_MAX_CONCURRENT_STREAMS = 0xffffffffu;
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constexpr uint32_t DEFAULT_SETTINGS_INITIAL_WINDOW_SIZE = 65535;
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constexpr uint32_t DEFAULT_SETTINGS_MAX_FRAME_SIZE = 16384;
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constexpr uint32_t DEFAULT_SETTINGS_MAX_HEADER_LIST_SIZE = 65535;
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constexpr uint32_t DEFAULT_SETTINGS_ENABLE_CONNECT_PROTOCOL = 0;
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constexpr uint32_t MAX_MAX_FRAME_SIZE = 16777215;
50
constexpr uint32_t MIN_MAX_FRAME_SIZE = DEFAULT_SETTINGS_MAX_FRAME_SIZE;
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constexpr uint32_t MAX_INITIAL_WINDOW_SIZE = 2147483647;
52
53
// Stream is not going to have any DATA frames
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constexpr int STREAM_OPTION_EMPTY_PAYLOAD = 0x1;
55
56
// Stream might have trailing headers
57
constexpr int STREAM_OPTION_GET_TRAILERS = 0x2;
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// Http2Stream internal states
60
constexpr int kStreamStateNone = 0x0;
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constexpr int kStreamStateShut = 0x1;
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constexpr int kStreamStateReadStart = 0x2;
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constexpr int kStreamStateReadPaused = 0x4;
64
constexpr int kStreamStateClosed = 0x8;
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constexpr int kStreamStateDestroyed = 0x10;
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constexpr int kStreamStateTrailers = 0x20;
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// Http2Session internal states
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constexpr int kSessionStateNone = 0x0;
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constexpr int kSessionStateHasScope = 0x1;
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constexpr int kSessionStateWriteScheduled = 0x2;
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constexpr int kSessionStateClosed = 0x4;
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constexpr int kSessionStateClosing = 0x8;
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constexpr int kSessionStateSending = 0x10;
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constexpr int kSessionStateWriteInProgress = 0x20;
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constexpr int kSessionStateReadingStopped = 0x40;
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constexpr int kSessionStateReceivePaused = 0x80;
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// The Padding Strategy determines the method by which extra padding is
80
// selected for HEADERS and DATA frames. These are configurable via the
81
// options passed in to a Http2Session object.
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enum PaddingStrategy {
83
  // No padding strategy. This is the default.
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  PADDING_STRATEGY_NONE,
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  // Attempts to ensure that the frame is 8-byte aligned
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  PADDING_STRATEGY_ALIGNED,
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  // Padding will ensure all data frames are maxFrameSize
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  PADDING_STRATEGY_MAX,
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  // Removed and turned into an alias because it is unreasonably expensive for
90
  // very little benefit.
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  PADDING_STRATEGY_CALLBACK = PADDING_STRATEGY_ALIGNED
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};
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enum SessionType {
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  NGHTTP2_SESSION_SERVER,
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  NGHTTP2_SESSION_CLIENT
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};
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template <typename T, void(*fn)(T*)>
100
struct Nghttp2Deleter {
101
10650
  void operator()(T* ptr) const noexcept { fn(ptr); }
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};
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104
using Nghttp2OptionPointer =
105
    std::unique_ptr<nghttp2_option,
106
                    Nghttp2Deleter<nghttp2_option, nghttp2_option_del>>;
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using Nghttp2SessionPointer =
109
    std::unique_ptr<nghttp2_session,
110
                    Nghttp2Deleter<nghttp2_session, nghttp2_session_del>>;
111
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using Nghttp2SessionCallbacksPointer =
113
    std::unique_ptr<nghttp2_session_callbacks,
114
                    Nghttp2Deleter<nghttp2_session_callbacks,
115
                                   nghttp2_session_callbacks_del>>;
116
117
struct Http2HeadersTraits {
118
  typedef nghttp2_nv nv_t;
119
};
120
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struct Http2RcBufferPointerTraits {
122
  typedef nghttp2_rcbuf rcbuf_t;
123
  typedef nghttp2_vec vector_t;
124
125
312338
  static void inc(rcbuf_t* buf) {
126
312338
    CHECK_NOT_NULL(buf);
127
312338
    nghttp2_rcbuf_incref(buf);
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312338
  }
129
312338
  static void dec(rcbuf_t* buf) {
130
312338
    CHECK_NOT_NULL(buf);
131
312338
    nghttp2_rcbuf_decref(buf);
132
312338
  }
133
513884
  static vector_t get_vec(rcbuf_t* buf) {
134
513884
    CHECK_NOT_NULL(buf);
135
513884
    return nghttp2_rcbuf_get_buf(buf);
136
  }
137
143488
  static bool is_static(const rcbuf_t* buf) {
138
143488
    CHECK_NOT_NULL(buf);
139
143488
    return nghttp2_rcbuf_is_static(buf);
140
  }
141
};
142
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using Http2Headers = NgHeaders<Http2HeadersTraits>;
144
using Http2RcBufferPointer = NgRcBufPointer<Http2RcBufferPointerTraits>;
145
146
484598
struct NgHttp2StreamWrite : public MemoryRetainer {
147
  BaseObjectPtr<AsyncWrap> req_wrap;
148
  uv_buf_t buf;
149
150
65598
  inline explicit NgHttp2StreamWrite(uv_buf_t buf_) : buf(buf_) {}
151
27686
  inline NgHttp2StreamWrite(BaseObjectPtr<AsyncWrap> req_wrap, uv_buf_t buf_) :
152
27686
      req_wrap(std::move(req_wrap)), buf(buf_) {}
153
154
  void MemoryInfo(MemoryTracker* tracker) const override;
155
  SET_MEMORY_INFO_NAME(NgHttp2StreamWrite)
156
  SET_SELF_SIZE(NgHttp2StreamWrite)
157
};
158
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typedef uint32_t(*get_setting)(nghttp2_session* session,
160
                               nghttp2_settings_id id);
161
162
class Http2Ping;
163
class Http2Session;
164
class Http2Settings;
165
class Http2Stream;
166
class Origins;
167
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// This scope should be present when any call into nghttp2 that may schedule
169
// data to be written to the underlying transport is made, and schedules
170
// such a write automatically once the scope is exited.
171
class Http2Scope {
172
 public:
173
  explicit Http2Scope(Http2Stream* stream);
174
  explicit Http2Scope(Http2Session* session);
175
  ~Http2Scope();
176
177
 private:
178
  BaseObjectPtr<Http2Session> session_;
179
};
180
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// The Http2Options class is used to parse the options object passed in to
182
// a Http2Session object and convert those into an appropriate nghttp2_option
183
// struct. This is the primary mechanism by which the Http2Session object is
184
// configured.
185
class Http2Options {
186
 public:
187
  Http2Options(Http2State* http2_state,
188
               SessionType type);
189
190
660
  ~Http2Options() = default;
191
192
660
  nghttp2_option* operator*() const {
193
660
    return options_.get();
194
  }
195
196
1
  void set_max_header_pairs(uint32_t max) {
197
1
    max_header_pairs_ = max;
198
1
  }
199
200
660
  uint32_t max_header_pairs() const {
201
660
    return max_header_pairs_;
202
  }
203
204
2
  void set_padding_strategy(PaddingStrategy val) {
205
2
    padding_strategy_ = val;
206
2
  }
207
208
660
  PaddingStrategy padding_strategy() const {
209
660
    return padding_strategy_;
210
  }
211
212
2
  void set_max_outstanding_pings(size_t max) {
213
2
    max_outstanding_pings_ = max;
214
2
  }
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216
660
  size_t max_outstanding_pings() const {
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660
    return max_outstanding_pings_;
218
  }
219
220
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  void set_max_outstanding_settings(size_t max) {
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2
    max_outstanding_settings_ = max;
222
2
  }
223
224
660
  size_t max_outstanding_settings() const {
225
660
    return max_outstanding_settings_;
226
  }
227
228
8
  void set_max_session_memory(uint64_t max) {
229
8
    max_session_memory_ = max;
230
8
  }
231
232
660
  uint64_t max_session_memory() const {
233
660
    return max_session_memory_;
234
  }
235
236
 private:
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  Nghttp2OptionPointer options_;
238
  uint64_t max_session_memory_ = kDefaultMaxSessionMemory;
239
  uint32_t max_header_pairs_ = DEFAULT_MAX_HEADER_LIST_PAIRS;
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  PaddingStrategy padding_strategy_ = PADDING_STRATEGY_NONE;
241
  size_t max_outstanding_pings_ = kDefaultMaxPings;
242
  size_t max_outstanding_settings_ = kDefaultMaxSettings;
243
};
244
245
struct Http2Priority : public nghttp2_priority_spec {
246
  Http2Priority(Environment* env,
247
                v8::Local<v8::Value> parent,
248
                v8::Local<v8::Value> weight,
249
                v8::Local<v8::Value> exclusive);
250
};
251
252
47542
class Http2StreamListener : public StreamListener {
253
 public:
254
  uv_buf_t OnStreamAlloc(size_t suggested_size) override;
255
  void OnStreamRead(ssize_t nread, const uv_buf_t& buf) override;
256
};
257
258
struct Http2HeaderTraits {
259
  typedef Http2RcBufferPointer rcbufferpointer_t;
260
  typedef Http2Session allocator_t;
261
262
  // HTTP/2 does not support identifying header names by token id.
263
  // HTTP/3 will, however, so we prepare for that now.
264
71744
  static const char* ToHttpHeaderName(int32_t token) { return nullptr; }
265
};
266
267
using Http2Header = NgHeader<Http2HeaderTraits>;
268
269
class Http2Stream : public AsyncWrap,
270
                    public StreamBase {
271
 public:
272
  static Http2Stream* New(
273
      Http2Session* session,
274
      int32_t id,
275
      nghttp2_headers_category category = NGHTTP2_HCAT_HEADERS,
276
      int options = 0);
277
  ~Http2Stream() override;
278
279
  nghttp2_stream* operator*() const;
280
281
  nghttp2_stream* stream() const;
282
283
160803
  Http2Session* session() { return session_.get(); }
284
18
  const Http2Session* session() const { return session_.get(); }
285
286
  // Required for StreamBase
287
  int ReadStart() override;
288
289
  // Required for StreamBase
290
  int ReadStop() override;
291
292
  // Required for StreamBase
293
  ShutdownWrap* CreateShutdownWrap(v8::Local<v8::Object> object) override;
294
  int DoShutdown(ShutdownWrap* req_wrap) override;
295
296
15
  bool HasWantsWrite() const override { return true; }
297
298
  // Initiate a response on this stream.
299
  int SubmitResponse(const Http2Headers& headers, int options);
300
301
  // Submit informational headers for this stream
302
  int SubmitInfo(const Http2Headers& headers);
303
304
  // Submit trailing headers for this stream
305
  int SubmitTrailers(const Http2Headers& headers);
306
  void OnTrailers();
307
308
  // Submit a PRIORITY frame for this stream
309
  int SubmitPriority(const Http2Priority& priority, bool silent = false);
310
311
  // Submits an RST_STREAM frame using the given code
312
  void SubmitRstStream(const uint32_t code);
313
314
  void FlushRstStream();
315
316
  // Submits a PUSH_PROMISE frame with this stream as the parent.
317
  Http2Stream* SubmitPushPromise(
318
      const Http2Headers& headers,
319
      int32_t* ret,
320
      int options = 0);
321
322
323
  void Close(int32_t code);
324
325
  // Destroy this stream instance and free all held memory.
326
  void Destroy();
327
328
392325
  bool is_destroyed() const {
329
392325
    return flags_ & kStreamStateDestroyed;
330
  }
331
332
47463
  bool is_writable() const {
333
47463
    return !(flags_ & kStreamStateShut);
334
  }
335
336
28471
  bool is_paused() const {
337
28471
    return flags_ & kStreamStateReadPaused;
338
  }
339
340
  bool is_closed() const {
341
    return flags_ & kStreamStateClosed;
342
  }
343
344
12724
  bool has_trailers() const {
345
12724
    return flags_ & kStreamStateTrailers;
346
  }
347
348
204
  void set_has_trailers(bool on = true) {
349
204
    if (on)
350
167
      flags_ |= kStreamStateTrailers;
351
    else
352
37
      flags_ &= ~kStreamStateTrailers;
353
204
  }
354
355
23577
  void set_closed() {
356
23577
    flags_ |= kStreamStateClosed;
357
23577
  }
358
359
23662
  void set_destroyed() {
360
23662
    flags_ |= kStreamStateDestroyed;
361
23662
  }
362
363
24080
  void set_not_writable() {
364
24080
    flags_ |= kStreamStateShut;
365
24080
  }
366
367
23455
  void set_reading(bool on = true) {
368
23455
    if (on) {
369
23455
      flags_ |= kStreamStateReadStart;
370
23455
      set_paused(false);
371
    } else {}
372
23455
  }
373
374
38975
  void set_paused(bool on = true) {
375
38975
    if (on)
376
15520
      flags_ |= kStreamStateReadPaused;
377
    else
378
23455
      flags_ &= ~kStreamStateReadPaused;
379
38975
  }
380
381
  // Returns true if this stream is in the reading state, which occurs when
382
  // the kStreamStateReadStart flag has been set and the
383
  // kStreamStateReadPaused flag is *not* set.
384
31548
  bool is_reading() const {
385

31548
    return flags_ & kStreamStateReadStart && !is_paused();
386
  }
387
388
  // Returns the RST_STREAM code used to close this stream
389
  int32_t code() const { return code_; }
390
391
  // Returns the stream identifier for this stream
392
74947
  int32_t id() const { return id_; }
393
394
  void IncrementAvailableOutboundLength(size_t amount);
395
  void DecrementAvailableOutboundLength(size_t amount);
396
397
  bool AddHeader(nghttp2_rcbuf* name, nghttp2_rcbuf* value, uint8_t flags);
398
399
  template <typename Fn>
400
23445
  void TransferHeaders(Fn&& fn) {
401
23445
    size_t i = 0;
402
95189
    for (const auto& header : current_headers_ )
403
71744
      fn(header, i++);
404
23445
    current_headers_.clear();
405
23445
  }
406
407
70335
  size_t headers_count() const {
408
70335
    return current_headers_.size();
409
  }
410
411
23445
  nghttp2_headers_category headers_category() const {
412
23445
    return current_headers_category_;
413
  }
414
415
  void StartHeaders(nghttp2_headers_category category);
416
417
  // Required for StreamBase
418
68408
  bool IsAlive() override {
419
68408
    return true;
420
  }
421
422
  // Required for StreamBase
423
  bool IsClosing() override {
424
    return false;
425
  }
426
427
150405
  AsyncWrap* GetAsyncWrap() override { return this; }
428
429
  int DoWrite(WriteWrap* w, uv_buf_t* bufs, size_t count,
430
              uv_stream_t* send_handle) override;
431
432
  void MemoryInfo(MemoryTracker* tracker) const override;
433
  SET_MEMORY_INFO_NAME(Http2Stream)
434
  SET_SELF_SIZE(Http2Stream)
435
436
  std::string diagnostic_name() const override;
437
438
  // JavaScript API
439
  static void GetID(const v8::FunctionCallbackInfo<v8::Value>& args);
440
  static void Destroy(const v8::FunctionCallbackInfo<v8::Value>& args);
441
  static void Priority(const v8::FunctionCallbackInfo<v8::Value>& args);
442
  static void PushPromise(const v8::FunctionCallbackInfo<v8::Value>& args);
443
  static void RefreshState(const v8::FunctionCallbackInfo<v8::Value>& args);
444
  static void Info(const v8::FunctionCallbackInfo<v8::Value>& args);
445
  static void Trailers(const v8::FunctionCallbackInfo<v8::Value>& args);
446
  static void Respond(const v8::FunctionCallbackInfo<v8::Value>& args);
447
  static void RstStream(const v8::FunctionCallbackInfo<v8::Value>& args);
448
449
  class Provider;
450
451
  struct Statistics {
452
    uint64_t start_time;
453
    uint64_t end_time;
454
    uint64_t first_header;     // Time first header was received
455
    uint64_t first_byte;       // Time first DATA frame byte was received
456
    uint64_t first_byte_sent;  // Time first DATA frame byte was sent
457
    uint64_t sent_bytes;
458
    uint64_t received_bytes;
459
  };
460
461
  Statistics statistics_ = {};
462
463
 private:
464
  Http2Stream(Http2Session* session,
465
              v8::Local<v8::Object> obj,
466
              int32_t id,
467
              nghttp2_headers_category category,
468
              int options);
469
470
  void EmitStatistics();
471
472
  BaseObjectWeakPtr<Http2Session> session_;     // The Parent HTTP/2 Session
473
  int32_t id_ = 0;                              // The Stream Identifier
474
  int32_t code_ = NGHTTP2_NO_ERROR;             // The RST_STREAM code (if any)
475
  int flags_ = kStreamStateNone;        // Internal state flags
476
477
  uint32_t max_header_pairs_ = DEFAULT_MAX_HEADER_LIST_PAIRS;
478
  uint32_t max_header_length_ = DEFAULT_SETTINGS_MAX_HEADER_LIST_SIZE;
479
480
  // The Current Headers block... As headers are received for this stream,
481
  // they are temporarily stored here until the OnFrameReceived is called
482
  // signalling the end of the HEADERS frame
483
  nghttp2_headers_category current_headers_category_ = NGHTTP2_HCAT_HEADERS;
484
  uint32_t current_headers_length_ = 0;  // total number of octets
485
  std::vector<Http2Header> current_headers_;
486
487
  // This keeps track of the amount of data read from the socket while the
488
  // socket was in paused mode. When `ReadStart()` is called (and not before
489
  // then), we tell nghttp2 that we consumed that data to get proper
490
  // backpressure handling.
491
  size_t inbound_consumed_data_while_paused_ = 0;
492
493
  // Outbound Data... This is the data written by the JS layer that is
494
  // waiting to be written out to the socket.
495
  std::queue<NgHttp2StreamWrite> queue_;
496
  size_t available_outbound_length_ = 0;
497
498
  Http2StreamListener stream_listener_;
499
500
  friend class Http2Session;
501
};
502
503
class Http2Stream::Provider {
504
 public:
505
  Provider(Http2Stream* stream, int options);
506
  explicit Provider(int options);
507
  virtual ~Provider();
508
509
23503
  nghttp2_data_provider* operator*() {
510
23503
    return !empty_ ? &provider_ : nullptr;
511
  }
512
513
  class FD;
514
  class Stream;
515
 protected:
516
  nghttp2_data_provider provider_;
517
518
 private:
519
  bool empty_ = false;
520
};
521
522
23503
class Http2Stream::Provider::Stream : public Http2Stream::Provider {
523
 public:
524
  Stream(Http2Stream* stream, int options);
525
  explicit Stream(int options);
526
527
  static ssize_t OnRead(nghttp2_session* session,
528
                        int32_t id,
529
                        uint8_t* buf,
530
                        size_t length,
531
                        uint32_t* flags,
532
                        nghttp2_data_source* source,
533
                        void* user_data);
534
};
535
536
660
struct SessionJSFields {
537
  uint8_t bitfield;
538
  uint8_t priority_listener_count;
539
  uint8_t frame_error_listener_count;
540
  uint32_t max_invalid_frames = 1000;
541
  uint32_t max_rejected_streams = 100;
542
};
543
544
// Indices for js_fields_, which serves as a way to communicate data with JS
545
// land fast. In particular, we store information about the number/presence
546
// of certain event listeners in JS, and skip calls from C++ into JS if they
547
// are missing.
548
enum SessionUint8Fields {
549
  kBitfield = offsetof(SessionJSFields, bitfield),  // See below
550
  kSessionPriorityListenerCount =
551
      offsetof(SessionJSFields, priority_listener_count),
552
  kSessionFrameErrorListenerCount =
553
      offsetof(SessionJSFields, frame_error_listener_count),
554
  kSessionMaxInvalidFrames = offsetof(SessionJSFields, max_invalid_frames),
555
  kSessionMaxRejectedStreams = offsetof(SessionJSFields, max_rejected_streams),
556
  kSessionUint8FieldCount = sizeof(SessionJSFields)
557
};
558
559
enum SessionBitfieldFlags {
560
  kSessionHasRemoteSettingsListeners,
561
  kSessionRemoteSettingsIsUpToDate,
562
  kSessionHasPingListeners,
563
  kSessionHasAltsvcListeners
564
};
565
566
class Http2Session : public AsyncWrap,
567
                     public StreamListener,
568
                     public mem::NgLibMemoryManager<Http2Session, nghttp2_mem> {
569
 public:
570
  Http2Session(Http2State* http2_state,
571
               v8::Local<v8::Object> wrap,
572
               SessionType type = NGHTTP2_SESSION_SERVER);
573
  ~Http2Session() override;
574
575
31337
  StreamBase* underlying_stream() {
576
31337
    return static_cast<StreamBase*>(stream_);
577
  }
578
579
  void Close(uint32_t code = NGHTTP2_NO_ERROR,
580
             bool socket_closed = false);
581
582
  void Consume(v8::Local<v8::Object> stream);
583
584
  void Goaway(uint32_t code, int32_t lastStreamID,
585
              const uint8_t* data, size_t len);
586
587
  void AltSvc(int32_t id,
588
              uint8_t* origin,
589
              size_t origin_len,
590
              uint8_t* value,
591
              size_t value_len);
592
593
  void Origin(const Origins& origins);
594
595
  uint8_t SendPendingData();
596
597
  // Submits a new request. If the request is a success, assigned
598
  // will be a pointer to the Http2Stream instance assigned.
599
  // This only works if the session is a client session.
600
  Http2Stream* SubmitRequest(
601
      const Http2Priority& priority,
602
      const Http2Headers& headers,
603
      int32_t* ret,
604
      int options = 0);
605
606
  SessionType type() const { return session_type_; }
607
608
91748
  nghttp2_session* session() const { return session_.get(); }
609
610
  nghttp2_session* operator*() { return session_.get(); }
611
612
23771
  uint32_t max_header_pairs() const { return max_header_pairs_; }
613
614
  const char* TypeName() const;
615
616
65521
  bool is_destroyed() {
617

65521
    return (flags_ & kSessionStateClosed) || session_ == nullptr;
618
  }
619
620
641
  void set_destroyed() {
621
641
    flags_ |= kSessionStateClosed;
622
641
  }
623
624
#define IS_FLAG(name, flag)                                                    \
625
  bool is_##name() const { return flags_ & flag; }                             \
626
  void set_##name(bool on = true) {                                            \
627
    if (on)                                                                    \
628
      flags_ |= flag;                                                          \
629
    else                                                                       \
630
      flags_ &= ~flag;                                                         \
631
  }
632
633
173570
  IS_FLAG(in_scope, kSessionStateHasScope)
634
140674
  IS_FLAG(write_scheduled, kSessionStateWriteScheduled)
635
1282
  IS_FLAG(closing, kSessionStateClosing)
636
129555
  IS_FLAG(sending, kSessionStateSending)
637
171239
  IS_FLAG(write_in_progress, kSessionStateWriteInProgress)
638
68590
  IS_FLAG(reading_stopped, kSessionStateReadingStopped)
639
63594
  IS_FLAG(receive_paused, kSessionStateReceivePaused)
640
641
#undef IS_FLAG
642
643
  // Schedule a write if nghttp2 indicates it wants to write to the socket.
644
  void MaybeScheduleWrite();
645
646
  // Stop reading if nghttp2 doesn't want to anymore.
647
  void MaybeStopReading();
648
649
  // Returns pointer to the stream, or nullptr if stream does not exist
650
  BaseObjectPtr<Http2Stream> FindStream(int32_t id);
651
652
  bool CanAddStream();
653
654
  // Adds a stream instance to this session
655
  void AddStream(Http2Stream* stream);
656
657
  // Removes a stream instance from this session
658
  BaseObjectPtr<Http2Stream> RemoveStream(int32_t id);
659
660
  // Indicates whether there currently exist outgoing buffers for this stream.
661
  bool HasWritesOnSocketForStream(Http2Stream* stream);
662
663
  // Write data from stream_buf_ to the session
664
  ssize_t ConsumeHTTP2Data();
665
666
  void MemoryInfo(MemoryTracker* tracker) const override;
667
4
  SET_MEMORY_INFO_NAME(Http2Session)
668
4
  SET_SELF_SIZE(Http2Session)
669
670
  std::string diagnostic_name() const override;
671
672
  // Schedule an RstStream for after the current write finishes.
673
8
  void AddPendingRstStream(int32_t stream_id) {
674
8
    pending_rst_streams_.emplace_back(stream_id);
675
8
  }
676
677
23662
  bool has_pending_rststream(int32_t stream_id) {
678
47324
    return pending_rst_streams_.end() !=
679
47324
        std::find(pending_rst_streams_.begin(),
680
            pending_rst_streams_.end(),
681
70986
            stream_id);
682
  }
683
684
  // Handle reads/writes from the underlying network transport.
685
  uv_buf_t OnStreamAlloc(size_t suggested_size) override;
686
  void OnStreamRead(ssize_t nread, const uv_buf_t& buf) override;
687
  void OnStreamAfterWrite(WriteWrap* w, int status) override;
688
689
  // Implementation for mem::NgLibMemoryManager
690
  void CheckAllocatedSize(size_t previous_size) const;
691
  void IncreaseAllocatedSize(size_t size);
692
  void DecreaseAllocatedSize(size_t size);
693
694
  // The JavaScript API
695
  static void New(const v8::FunctionCallbackInfo<v8::Value>& args);
696
  static void Consume(const v8::FunctionCallbackInfo<v8::Value>& args);
697
  static void Receive(const v8::FunctionCallbackInfo<v8::Value>& args);
698
  static void Destroy(const v8::FunctionCallbackInfo<v8::Value>& args);
699
  static void Settings(const v8::FunctionCallbackInfo<v8::Value>& args);
700
  static void Request(const v8::FunctionCallbackInfo<v8::Value>& args);
701
  static void SetNextStreamID(const v8::FunctionCallbackInfo<v8::Value>& args);
702
  static void SetLocalWindowSize(
703
      const v8::FunctionCallbackInfo<v8::Value>& args);
704
  static void Goaway(const v8::FunctionCallbackInfo<v8::Value>& args);
705
  static void UpdateChunksSent(const v8::FunctionCallbackInfo<v8::Value>& args);
706
  static void RefreshState(const v8::FunctionCallbackInfo<v8::Value>& args);
707
  static void Ping(const v8::FunctionCallbackInfo<v8::Value>& args);
708
  static void AltSvc(const v8::FunctionCallbackInfo<v8::Value>& args);
709
  static void Origin(const v8::FunctionCallbackInfo<v8::Value>& args);
710
711
  template <get_setting fn>
712
  static void RefreshSettings(const v8::FunctionCallbackInfo<v8::Value>& args);
713
714
  uv_loop_t* event_loop() const {
715
    return env()->event_loop();
716
  }
717
718
1269
  Http2State* http2_state() const { return http2_state_.get(); }
719
720
  BaseObjectPtr<Http2Ping> PopPing();
721
  bool AddPing(const uint8_t* data, v8::Local<v8::Function> callback);
722
723
  BaseObjectPtr<Http2Settings> PopSettings();
724
  bool AddSettings(v8::Local<v8::Function> callback);
725
726
155207
  void IncrementCurrentSessionMemory(uint64_t amount) {
727
155207
    current_session_memory_ += amount;
728
155207
  }
729
730
104172
  void DecrementCurrentSessionMemory(uint64_t amount) {
731
    DCHECK_LE(amount, current_session_memory_);
732
104172
    current_session_memory_ -= amount;
733
104172
  }
734
735
  // Tell our custom memory allocator that this rcbuf is independent of
736
  // this session now, and may outlive it.
737
  void StopTrackingRcbuf(nghttp2_rcbuf* buf);
738
739
  // Returns the current session memory including memory allocated by nghttp2,
740
  // the current outbound storage queue, and pending writes.
741
83846
  uint64_t current_session_memory() const {
742
83846
    uint64_t total = current_session_memory_ + sizeof(Http2Session);
743
83846
    total += current_nghttp2_memory_;
744
83846
    total += outgoing_storage_.size();
745
83846
    return total;
746
  }
747
748
  // Return true if current_session_memory + amount is less than the max
749
83846
  bool has_available_session_memory(uint64_t amount) const {
750
83846
    return current_session_memory() + amount <= max_session_memory_;
751
  }
752
753
  struct Statistics {
754
    uint64_t start_time;
755
    uint64_t end_time;
756
    uint64_t ping_rtt;
757
    uint64_t data_sent;
758
    uint64_t data_received;
759
    uint32_t frame_count;
760
    uint32_t frame_sent;
761
    int32_t stream_count;
762
    size_t max_concurrent_streams;
763
    double stream_average_duration;
764
  };
765
766
  Statistics statistics_ = {};
767
768
 private:
769
  void EmitStatistics();
770
771
  // Frame Padding Strategies
772
  ssize_t OnDWordAlignedPadding(size_t frameLength,
773
                                size_t maxPayloadLen);
774
  ssize_t OnMaxFrameSizePadding(size_t frameLength,
775
                                size_t maxPayloadLen);
776
777
  // Frame Handler
778
  int HandleDataFrame(const nghttp2_frame* frame);
779
  void HandleGoawayFrame(const nghttp2_frame* frame);
780
  void HandleHeadersFrame(const nghttp2_frame* frame);
781
  void HandlePriorityFrame(const nghttp2_frame* frame);
782
  void HandleSettingsFrame(const nghttp2_frame* frame);
783
  void HandlePingFrame(const nghttp2_frame* frame);
784
  void HandleAltSvcFrame(const nghttp2_frame* frame);
785
  void HandleOriginFrame(const nghttp2_frame* frame);
786
787
  // nghttp2 callbacks
788
  static int OnBeginHeadersCallback(
789
      nghttp2_session* session,
790
      const nghttp2_frame* frame,
791
      void* user_data);
792
  static int OnHeaderCallback(
793
      nghttp2_session* session,
794
      const nghttp2_frame* frame,
795
      nghttp2_rcbuf* name,
796
      nghttp2_rcbuf* value,
797
      uint8_t flags,
798
      void* user_data);
799
  static int OnFrameReceive(
800
      nghttp2_session* session,
801
      const nghttp2_frame* frame,
802
      void* user_data);
803
  static int OnFrameNotSent(
804
      nghttp2_session* session,
805
      const nghttp2_frame* frame,
806
      int error_code,
807
      void* user_data);
808
  static int OnFrameSent(
809
      nghttp2_session* session,
810
      const nghttp2_frame* frame,
811
      void* user_data);
812
  static int OnStreamClose(
813
      nghttp2_session* session,
814
      int32_t id,
815
      uint32_t code,
816
      void* user_data);
817
  static int OnInvalidHeader(
818
      nghttp2_session* session,
819
      const nghttp2_frame* frame,
820
      nghttp2_rcbuf* name,
821
      nghttp2_rcbuf* value,
822
      uint8_t flags,
823
      void* user_data);
824
  static int OnDataChunkReceived(
825
      nghttp2_session* session,
826
      uint8_t flags,
827
      int32_t id,
828
      const uint8_t* data,
829
      size_t len,
830
      void* user_data);
831
  static ssize_t OnSelectPadding(
832
      nghttp2_session* session,
833
      const nghttp2_frame* frame,
834
      size_t maxPayloadLen,
835
      void* user_data);
836
  static int OnNghttpError(
837
      nghttp2_session* session,
838
      const char* message,
839
      size_t len,
840
      void* user_data);
841
  static int OnSendData(
842
      nghttp2_session* session,
843
      nghttp2_frame* frame,
844
      const uint8_t* framehd,
845
      size_t length,
846
      nghttp2_data_source* source,
847
      void* user_data);
848
  static int OnInvalidFrame(
849
      nghttp2_session* session,
850
      const nghttp2_frame* frame,
851
      int lib_error_code,
852
      void* user_data);
853
854
9330
  struct Callbacks {
855
    explicit Callbacks(bool kHasGetPaddingCallback);
856
857
    Nghttp2SessionCallbacksPointer callbacks;
858
  };
859
860
  /* Use callback_struct_saved[kHasGetPaddingCallback ? 1 : 0] */
861
  static const Callbacks callback_struct_saved[2];
862
863
  // The underlying nghttp2_session handle
864
  Nghttp2SessionPointer session_;
865
866
  // JS-accessible numeric fields, as indexed by SessionUint8Fields.
867
  AliasedStruct<SessionJSFields> js_fields_;
868
869
  // The session type: client or server
870
  SessionType session_type_;
871
872
  // The maximum number of header pairs permitted for streams on this session
873
  uint32_t max_header_pairs_ = DEFAULT_MAX_HEADER_LIST_PAIRS;
874
875
  // The maximum amount of memory allocated for this session
876
  uint64_t max_session_memory_ = kDefaultMaxSessionMemory;
877
  uint64_t current_session_memory_ = 0;
878
  // The amount of memory allocated by nghttp2 internals
879
  uint64_t current_nghttp2_memory_ = 0;
880
881
  // The collection of active Http2Streams associated with this session
882
  std::unordered_map<int32_t, BaseObjectPtr<Http2Stream>> streams_;
883
884
  int flags_ = kSessionStateNone;
885
886
  // The StreamBase instance being used for i/o
887
  PaddingStrategy padding_strategy_ = PADDING_STRATEGY_NONE;
888
889
  // use this to allow timeout tracking during long-lasting writes
890
  uint32_t chunks_sent_since_last_write_ = 0;
891
892
  uv_buf_t stream_buf_ = uv_buf_init(nullptr, 0);
893
  // When processing input data, either stream_buf_ab_ or stream_buf_allocation_
894
  // will be set. stream_buf_ab_ is lazily created from stream_buf_allocation_.
895
  v8::Global<v8::ArrayBuffer> stream_buf_ab_;
896
  AllocatedBuffer stream_buf_allocation_;
897
  size_t stream_buf_offset_ = 0;
898
899
  size_t max_outstanding_pings_ = kDefaultMaxPings;
900
  std::queue<BaseObjectPtr<Http2Ping>> outstanding_pings_;
901
902
  size_t max_outstanding_settings_ = kDefaultMaxSettings;
903
  std::queue<BaseObjectPtr<Http2Settings>> outstanding_settings_;
904
905
  std::vector<NgHttp2StreamWrite> outgoing_buffers_;
906
  std::vector<uint8_t> outgoing_storage_;
907
  size_t outgoing_length_ = 0;
908
  std::vector<int32_t> pending_rst_streams_;
909
  // Count streams that have been rejected while being opened. Exceeding a fixed
910
  // limit will result in the session being destroyed, as an indication of a
911
  // misbehaving peer. This counter is reset once new streams are being
912
  // accepted again.
913
  uint32_t rejected_stream_count_ = 0;
914
  // Also use the invalid frame count as a measure for rejecting input frames.
915
  uint32_t invalid_frame_count_ = 0;
916
917
  void PushOutgoingBuffer(NgHttp2StreamWrite&& write);
918
919
  BaseObjectPtr<Http2State> http2_state_;
920
921
  void CopyDataIntoOutgoing(const uint8_t* src, size_t src_length);
922
  void ClearOutgoing(int status);
923
924
  friend class Http2Scope;
925
  friend class Http2StreamListener;
926
};
927
928
14
class Http2SessionPerformanceEntry : public performance::PerformanceEntry {
929
 public:
930
7
  Http2SessionPerformanceEntry(
931
      Http2State* http2_state,
932
      const Http2Session::Statistics& stats,
933
7
      SessionType type) :
934
          performance::PerformanceEntry(
935
              http2_state->env(), "Http2Session", "http2",
936
7
              stats.start_time,
937
7
              stats.end_time),
938
7
          ping_rtt_(stats.ping_rtt),
939
7
          data_sent_(stats.data_sent),
940
7
          data_received_(stats.data_received),
941
7
          frame_count_(stats.frame_count),
942
7
          frame_sent_(stats.frame_sent),
943
7
          stream_count_(stats.stream_count),
944
7
          max_concurrent_streams_(stats.max_concurrent_streams),
945
7
          stream_average_duration_(stats.stream_average_duration),
946
          session_type_(type),
947
63
          http2_state_(http2_state) { }
948
949
7
  uint64_t ping_rtt() const { return ping_rtt_; }
950
7
  uint64_t data_sent() const { return data_sent_; }
951
7
  uint64_t data_received() const { return data_received_; }
952
7
  uint32_t frame_count() const { return frame_count_; }
953
7
  uint32_t frame_sent() const { return frame_sent_; }
954
7
  int32_t stream_count() const { return stream_count_; }
955
7
  size_t max_concurrent_streams() const { return max_concurrent_streams_; }
956
7
  double stream_average_duration() const { return stream_average_duration_; }
957
7
  SessionType type() const { return session_type_; }
958
7
  Http2State* http2_state() const { return http2_state_.get(); }
959
960
7
  void Notify(v8::Local<v8::Value> obj) {
961
7
    performance::PerformanceEntry::Notify(env(), kind(), obj);
962
7
  }
963
964
 private:
965
  uint64_t ping_rtt_;
966
  uint64_t data_sent_;
967
  uint64_t data_received_;
968
  uint32_t frame_count_;
969
  uint32_t frame_sent_;
970
  int32_t stream_count_;
971
  size_t max_concurrent_streams_;
972
  double stream_average_duration_;
973
  SessionType session_type_;
974
  BaseObjectPtr<Http2State> http2_state_;
975
};
976
977
16
class Http2StreamPerformanceEntry
978
    : public performance::PerformanceEntry {
979
 public:
980
8
  Http2StreamPerformanceEntry(
981
      Http2State* http2_state,
982
      int32_t id,
983
8
      const Http2Stream::Statistics& stats) :
984
          performance::PerformanceEntry(
985
              http2_state->env(), "Http2Stream", "http2",
986
8
              stats.start_time,
987
8
              stats.end_time),
988
          id_(id),
989
8
          first_header_(stats.first_header),
990
8
          first_byte_(stats.first_byte),
991
8
          first_byte_sent_(stats.first_byte_sent),
992
8
          sent_bytes_(stats.sent_bytes),
993
8
          received_bytes_(stats.received_bytes),
994
48
          http2_state_(http2_state) { }
995
996
8
  int32_t id() const { return id_; }
997
16
  uint64_t first_header() const { return first_header_; }
998
8
  uint64_t first_byte() const { return first_byte_; }
999
12
  uint64_t first_byte_sent() const { return first_byte_sent_; }
1000
8
  uint64_t sent_bytes() const { return sent_bytes_; }
1001
8
  uint64_t received_bytes() const { return received_bytes_; }
1002
8
  Http2State* http2_state() const { return http2_state_.get(); }
1003
1004
8
  void Notify(v8::Local<v8::Value> obj) {
1005
8
    performance::PerformanceEntry::Notify(env(), kind(), obj);
1006
8
  }
1007
1008
 private:
1009
  int32_t id_;
1010
  uint64_t first_header_;
1011
  uint64_t first_byte_;
1012
  uint64_t first_byte_sent_;
1013
  uint64_t sent_bytes_;
1014
  uint64_t received_bytes_;
1015
  BaseObjectPtr<Http2State> http2_state_;
1016
};
1017
1018
39
class Http2Ping : public AsyncWrap {
1019
 public:
1020
  explicit Http2Ping(
1021
      Http2Session* session,
1022
      v8::Local<v8::Object> obj,
1023
      v8::Local<v8::Function> callback);
1024
1025
  void MemoryInfo(MemoryTracker* tracker) const override;
1026
  SET_MEMORY_INFO_NAME(Http2Ping)
1027
  SET_SELF_SIZE(Http2Ping)
1028
1029
  void Send(const uint8_t* payload);
1030
  void Done(bool ack, const uint8_t* payload = nullptr);
1031
  void DetachFromSession();
1032
1033
  v8::Local<v8::Function> callback() const;
1034
1035
 private:
1036
  BaseObjectWeakPtr<Http2Session> session_;
1037
  v8::Global<v8::Function> callback_;
1038
  uint64_t startTime_;
1039
};
1040
1041
// The Http2Settings class is used to parse the settings passed in for
1042
// an Http2Session, converting those into an array of nghttp2_settings_entry
1043
// structs.
1044
2010
class Http2Settings : public AsyncWrap {
1045
 public:
1046
  Http2Settings(Http2Session* session,
1047
                v8::Local<v8::Object> obj,
1048
                v8::Local<v8::Function> callback,
1049
                uint64_t start_time = uv_hrtime());
1050
1051
  void MemoryInfo(MemoryTracker* tracker) const override;
1052
4
  SET_MEMORY_INFO_NAME(Http2Settings)
1053
4
  SET_SELF_SIZE(Http2Settings)
1054
1055
  void Send();
1056
  void Done(bool ack);
1057
1058
  v8::Local<v8::Function> callback() const;
1059
1060
  // Returns a Buffer instance with the serialized SETTINGS payload
1061
  v8::Local<v8::Value> Pack();
1062
1063
  static v8::Local<v8::Value> Pack(Http2State* state);
1064
1065
  // Resets the default values in the settings buffer
1066
  static void RefreshDefaults(Http2State* http2_state);
1067
1068
  // Update the local or remote settings for the given session
1069
  static void Update(Http2Session* session,
1070
                     get_setting fn);
1071
1072
 private:
1073
  static size_t Init(
1074
      Http2State* http2_state,
1075
      nghttp2_settings_entry* entries);
1076
1077
  static v8::Local<v8::Value> Pack(
1078
      Environment* env,
1079
      size_t count,
1080
      const nghttp2_settings_entry* entries);
1081
1082
  BaseObjectWeakPtr<Http2Session> session_;
1083
  v8::Global<v8::Function> callback_;
1084
  uint64_t startTime_;
1085
  size_t count_ = 0;
1086
  nghttp2_settings_entry entries_[IDX_SETTINGS_COUNT];
1087
};
1088
1089
class Origins {
1090
 public:
1091
  Origins(Environment* env,
1092
          v8::Local<v8::String> origin_string,
1093
          size_t origin_count);
1094
5
  ~Origins() = default;
1095
1096
5
  const nghttp2_origin_entry* operator*() const {
1097
5
    return reinterpret_cast<const nghttp2_origin_entry*>(buf_.data());
1098
  }
1099
1100
5
  size_t length() const {
1101
5
    return count_;
1102
  }
1103
1104
 private:
1105
  size_t count_;
1106
  AllocatedBuffer buf_;
1107
};
1108
1109
#define HTTP2_HIDDEN_CONSTANTS(V)                                              \
1110
  V(NGHTTP2_HCAT_REQUEST)                                                      \
1111
  V(NGHTTP2_HCAT_RESPONSE)                                                     \
1112
  V(NGHTTP2_HCAT_PUSH_RESPONSE)                                                \
1113
  V(NGHTTP2_HCAT_HEADERS)                                                      \
1114
  V(NGHTTP2_NV_FLAG_NONE)                                                      \
1115
  V(NGHTTP2_NV_FLAG_NO_INDEX)                                                  \
1116
  V(NGHTTP2_ERR_DEFERRED)                                                      \
1117
  V(NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE)                                       \
1118
  V(NGHTTP2_ERR_INVALID_ARGUMENT)                                              \
1119
  V(NGHTTP2_ERR_STREAM_CLOSED)                                                 \
1120
  V(NGHTTP2_ERR_NOMEM)                                                         \
1121
  V(STREAM_OPTION_EMPTY_PAYLOAD)                                               \
1122
  V(STREAM_OPTION_GET_TRAILERS)
1123
1124
#define HTTP2_ERROR_CODES(V)                                                   \
1125
  V(NGHTTP2_NO_ERROR)                                                          \
1126
  V(NGHTTP2_PROTOCOL_ERROR)                                                    \
1127
  V(NGHTTP2_INTERNAL_ERROR)                                                    \
1128
  V(NGHTTP2_FLOW_CONTROL_ERROR)                                                \
1129
  V(NGHTTP2_SETTINGS_TIMEOUT)                                                  \
1130
  V(NGHTTP2_STREAM_CLOSED)                                                     \
1131
  V(NGHTTP2_FRAME_SIZE_ERROR)                                                  \
1132
  V(NGHTTP2_REFUSED_STREAM)                                                    \
1133
  V(NGHTTP2_CANCEL)                                                            \
1134
  V(NGHTTP2_COMPRESSION_ERROR)                                                 \
1135
  V(NGHTTP2_CONNECT_ERROR)                                                     \
1136
  V(NGHTTP2_ENHANCE_YOUR_CALM)                                                 \
1137
  V(NGHTTP2_INADEQUATE_SECURITY)                                               \
1138
  V(NGHTTP2_HTTP_1_1_REQUIRED)                                                 \
1139
1140
#define HTTP2_CONSTANTS(V)                                                     \
1141
  V(NGHTTP2_ERR_FRAME_SIZE_ERROR)                                              \
1142
  V(NGHTTP2_SESSION_SERVER)                                                    \
1143
  V(NGHTTP2_SESSION_CLIENT)                                                    \
1144
  V(NGHTTP2_STREAM_STATE_IDLE)                                                 \
1145
  V(NGHTTP2_STREAM_STATE_OPEN)                                                 \
1146
  V(NGHTTP2_STREAM_STATE_RESERVED_LOCAL)                                       \
1147
  V(NGHTTP2_STREAM_STATE_RESERVED_REMOTE)                                      \
1148
  V(NGHTTP2_STREAM_STATE_HALF_CLOSED_LOCAL)                                    \
1149
  V(NGHTTP2_STREAM_STATE_HALF_CLOSED_REMOTE)                                   \
1150
  V(NGHTTP2_STREAM_STATE_CLOSED)                                               \
1151
  V(NGHTTP2_FLAG_NONE)                                                         \
1152
  V(NGHTTP2_FLAG_END_STREAM)                                                   \
1153
  V(NGHTTP2_FLAG_END_HEADERS)                                                  \
1154
  V(NGHTTP2_FLAG_ACK)                                                          \
1155
  V(NGHTTP2_FLAG_PADDED)                                                       \
1156
  V(NGHTTP2_FLAG_PRIORITY)                                                     \
1157
  V(DEFAULT_SETTINGS_HEADER_TABLE_SIZE)                                        \
1158
  V(DEFAULT_SETTINGS_ENABLE_PUSH)                                              \
1159
  V(DEFAULT_SETTINGS_MAX_CONCURRENT_STREAMS)                                   \
1160
  V(DEFAULT_SETTINGS_INITIAL_WINDOW_SIZE)                                      \
1161
  V(DEFAULT_SETTINGS_MAX_FRAME_SIZE)                                           \
1162
  V(DEFAULT_SETTINGS_MAX_HEADER_LIST_SIZE)                                     \
1163
  V(DEFAULT_SETTINGS_ENABLE_CONNECT_PROTOCOL)                                  \
1164
  V(MAX_MAX_FRAME_SIZE)                                                        \
1165
  V(MIN_MAX_FRAME_SIZE)                                                        \
1166
  V(MAX_INITIAL_WINDOW_SIZE)                                                   \
1167
  V(NGHTTP2_SETTINGS_HEADER_TABLE_SIZE)                                        \
1168
  V(NGHTTP2_SETTINGS_ENABLE_PUSH)                                              \
1169
  V(NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS)                                   \
1170
  V(NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE)                                      \
1171
  V(NGHTTP2_SETTINGS_MAX_FRAME_SIZE)                                           \
1172
  V(NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE)                                     \
1173
  V(NGHTTP2_SETTINGS_ENABLE_CONNECT_PROTOCOL)                                  \
1174
  V(PADDING_STRATEGY_NONE)                                                     \
1175
  V(PADDING_STRATEGY_ALIGNED)                                                  \
1176
  V(PADDING_STRATEGY_MAX)                                                      \
1177
  V(PADDING_STRATEGY_CALLBACK)                                                 \
1178
  HTTP2_ERROR_CODES(V)
1179
1180
#define HTTP2_SETTINGS(V)                                                      \
1181
  V(HEADER_TABLE_SIZE)                                                         \
1182
  V(ENABLE_PUSH)                                                               \
1183
  V(MAX_CONCURRENT_STREAMS)                                                    \
1184
  V(INITIAL_WINDOW_SIZE)                                                       \
1185
  V(MAX_FRAME_SIZE)                                                            \
1186
  V(MAX_HEADER_LIST_SIZE)                                                      \
1187
  V(ENABLE_CONNECT_PROTOCOL)                                                   \
1188
1189
}  // namespace http2
1190
}  // namespace node
1191
1192
#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
1193
1194
#endif  // SRC_NODE_HTTP2_H_