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node_http2.cc
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node_http2.cc
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#include "aliased_buffer.h"
#include "node.h"
#include "node_buffer.h"
#include "node_http2.h"
#include "node_http2_state.h"
#include <queue>
#include <algorithm>
namespace node {
using v8::Boolean;
using v8::Context;
using v8::Float64Array;
using v8::Function;
using v8::Integer;
using v8::String;
using v8::Uint32;
using v8::Uint32Array;
using v8::Undefined;
namespace http2 {
Nghttp2Session::Callbacks Nghttp2Session::callback_struct_saved[2] = {
Callbacks(false),
Callbacks(true)};
Http2Options::Http2Options(Environment* env) {
nghttp2_option_new(&options_);
nghttp2_option_set_no_auto_window_update(options_, 1);
AliasedBuffer<uint32_t, v8::Uint32Array>& buffer =
env->http2_state()->options_buffer;
uint32_t flags = buffer[IDX_OPTIONS_FLAGS];
if (flags & (1 << IDX_OPTIONS_MAX_DEFLATE_DYNAMIC_TABLE_SIZE)) {
nghttp2_option_set_max_deflate_dynamic_table_size(
options_,
buffer[IDX_OPTIONS_MAX_DEFLATE_DYNAMIC_TABLE_SIZE]);
}
if (flags & (1 << IDX_OPTIONS_MAX_RESERVED_REMOTE_STREAMS)) {
nghttp2_option_set_max_reserved_remote_streams(
options_,
buffer[IDX_OPTIONS_MAX_RESERVED_REMOTE_STREAMS]);
}
if (flags & (1 << IDX_OPTIONS_MAX_SEND_HEADER_BLOCK_LENGTH)) {
nghttp2_option_set_max_send_header_block_length(
options_,
buffer[IDX_OPTIONS_MAX_SEND_HEADER_BLOCK_LENGTH]);
}
// Recommended default
nghttp2_option_set_peer_max_concurrent_streams(options_, 100);
if (flags & (1 << IDX_OPTIONS_PEER_MAX_CONCURRENT_STREAMS)) {
nghttp2_option_set_peer_max_concurrent_streams(
options_,
buffer[IDX_OPTIONS_PEER_MAX_CONCURRENT_STREAMS]);
}
if (flags & (1 << IDX_OPTIONS_PADDING_STRATEGY)) {
padding_strategy_type strategy =
static_cast<padding_strategy_type>(
buffer.GetValue(IDX_OPTIONS_PADDING_STRATEGY));
SetPaddingStrategy(strategy);
}
if (flags & (1 << IDX_OPTIONS_MAX_HEADER_LIST_PAIRS)) {
SetMaxHeaderPairs(buffer[IDX_OPTIONS_MAX_HEADER_LIST_PAIRS]);
}
}
Http2Settings::Http2Settings(Environment* env) : env_(env) {
entries_.AllocateSufficientStorage(IDX_SETTINGS_COUNT);
AliasedBuffer<uint32_t, v8::Uint32Array>& buffer =
env->http2_state()->settings_buffer;
uint32_t flags = buffer[IDX_SETTINGS_COUNT];
size_t n = 0;
if (flags & (1 << IDX_SETTINGS_HEADER_TABLE_SIZE)) {
uint32_t val = buffer[IDX_SETTINGS_HEADER_TABLE_SIZE];
DEBUG_HTTP2("Setting header table size: %d\n", val);
entries_[n].settings_id = NGHTTP2_SETTINGS_HEADER_TABLE_SIZE;
entries_[n].value = val;
n++;
}
if (flags & (1 << IDX_SETTINGS_MAX_CONCURRENT_STREAMS)) {
uint32_t val = buffer[IDX_SETTINGS_MAX_CONCURRENT_STREAMS];
DEBUG_HTTP2("Setting max concurrent streams: %d\n", val);
entries_[n].settings_id = NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS;
entries_[n].value = val;
n++;
}
if (flags & (1 << IDX_SETTINGS_MAX_FRAME_SIZE)) {
uint32_t val = buffer[IDX_SETTINGS_MAX_FRAME_SIZE];
DEBUG_HTTP2("Setting max frame size: %d\n", val);
entries_[n].settings_id = NGHTTP2_SETTINGS_MAX_FRAME_SIZE;
entries_[n].value = val;
n++;
}
if (flags & (1 << IDX_SETTINGS_INITIAL_WINDOW_SIZE)) {
uint32_t val = buffer[IDX_SETTINGS_INITIAL_WINDOW_SIZE];
DEBUG_HTTP2("Setting initial window size: %d\n", val);
entries_[n].settings_id = NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE;
entries_[n].value = val;
n++;
}
if (flags & (1 << IDX_SETTINGS_MAX_HEADER_LIST_SIZE)) {
uint32_t val = buffer[IDX_SETTINGS_MAX_HEADER_LIST_SIZE];
DEBUG_HTTP2("Setting max header list size: %d\n", val);
entries_[n].settings_id = NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE;
entries_[n].value = val;
n++;
}
if (flags & (1 << IDX_SETTINGS_ENABLE_PUSH)) {
uint32_t val = buffer[IDX_SETTINGS_ENABLE_PUSH];
DEBUG_HTTP2("Setting enable push: %d\n", val);
entries_[n].settings_id = NGHTTP2_SETTINGS_ENABLE_PUSH;
entries_[n].value = val;
n++;
}
count_ = n;
}
inline Local<Value> Http2Settings::Pack() {
const size_t len = count_ * 6;
Local<Value> buf = Buffer::New(env_, len).ToLocalChecked();
ssize_t ret =
nghttp2_pack_settings_payload(
reinterpret_cast<uint8_t*>(Buffer::Data(buf)), len,
*entries_, count_);
if (ret >= 0)
return buf;
else
return Undefined(env_->isolate());
}
inline void Http2Settings::Update(Environment* env,
Http2Session* session,
get_setting fn) {
AliasedBuffer<uint32_t, v8::Uint32Array>& buffer =
env->http2_state()->settings_buffer;
buffer[IDX_SETTINGS_HEADER_TABLE_SIZE] =
fn(session->session(), NGHTTP2_SETTINGS_HEADER_TABLE_SIZE);
buffer[IDX_SETTINGS_MAX_CONCURRENT_STREAMS] =
fn(session->session(), NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS);
buffer[IDX_SETTINGS_INITIAL_WINDOW_SIZE] =
fn(session->session(), NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE);
buffer[IDX_SETTINGS_MAX_FRAME_SIZE] =
fn(session->session(), NGHTTP2_SETTINGS_MAX_FRAME_SIZE);
buffer[IDX_SETTINGS_MAX_HEADER_LIST_SIZE] =
fn(session->session(), NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE);
buffer[IDX_SETTINGS_ENABLE_PUSH] =
fn(session->session(), NGHTTP2_SETTINGS_ENABLE_PUSH);
}
inline void Http2Settings::RefreshDefaults(Environment* env) {
AliasedBuffer<uint32_t, v8::Uint32Array>& buffer =
env->http2_state()->settings_buffer;
buffer[IDX_SETTINGS_HEADER_TABLE_SIZE] =
DEFAULT_SETTINGS_HEADER_TABLE_SIZE;
buffer[IDX_SETTINGS_ENABLE_PUSH] =
DEFAULT_SETTINGS_ENABLE_PUSH;
buffer[IDX_SETTINGS_INITIAL_WINDOW_SIZE] =
DEFAULT_SETTINGS_INITIAL_WINDOW_SIZE;
buffer[IDX_SETTINGS_MAX_FRAME_SIZE] =
DEFAULT_SETTINGS_MAX_FRAME_SIZE;
buffer[IDX_SETTINGS_MAX_HEADER_LIST_SIZE] =
DEFAULT_SETTINGS_MAX_HEADER_LIST_SIZE;
buffer[IDX_SETTINGS_COUNT] =
(1 << IDX_SETTINGS_HEADER_TABLE_SIZE) |
(1 << IDX_SETTINGS_ENABLE_PUSH) |
(1 << IDX_SETTINGS_INITIAL_WINDOW_SIZE) |
(1 << IDX_SETTINGS_MAX_FRAME_SIZE) |
(1 << IDX_SETTINGS_MAX_HEADER_LIST_SIZE);
}
Http2Priority::Http2Priority(Environment* env,
Local<Value> parent,
Local<Value> weight,
Local<Value> exclusive) {
Local<Context> context = env->context();
int32_t parent_ = parent->Int32Value(context).ToChecked();
int32_t weight_ = weight->Int32Value(context).ToChecked();
bool exclusive_ = exclusive->BooleanValue(context).ToChecked();
DEBUG_HTTP2("Http2Priority: parent: %d, weight: %d, exclusive: %d\n",
parent_, weight_, exclusive_);
nghttp2_priority_spec_init(&spec, parent_, weight_, exclusive_ ? 1 : 0);
}
Http2Session::Http2Session(Environment* env,
Local<Object> wrap,
nghttp2_session_type type)
: AsyncWrap(env, wrap, AsyncWrap::PROVIDER_HTTP2SESSION),
StreamBase(env) {
MakeWeak<Http2Session>(this);
Http2Options opts(env);
padding_strategy_ = opts.GetPaddingStrategy();
int32_t maxHeaderPairs = opts.GetMaxHeaderPairs();
maxHeaderPairs = type == NGHTTP2_SESSION_SERVER ?
std::max(maxHeaderPairs, 4) : std::max(maxHeaderPairs, 1);
Init(type, *opts, nullptr, maxHeaderPairs);
// For every node::Http2Session instance, there is a uv_prepare_t handle
// whose callback is triggered on every tick of the event loop. When
// run, nghttp2 is prompted to send any queued data it may have stored.
prep_ = new uv_prepare_t();
uv_prepare_init(env->event_loop(), prep_);
prep_->data = static_cast<void*>(this);
uv_prepare_start(prep_, [](uv_prepare_t* t) {
Http2Session* session = static_cast<Http2Session*>(t->data);
HandleScope scope(session->env()->isolate());
Context::Scope context_scope(session->env()->context());
// Sending data may call arbitrary JS code, so keep track of
// async context.
InternalCallbackScope callback_scope(session);
session->SendPendingData();
});
}
Http2Session::~Http2Session() {
CHECK(persistent().IsEmpty());
Close();
}
void Http2Session::Close() {
if (!object().IsEmpty())
ClearWrap(object());
persistent().Reset();
this->Nghttp2Session::Close();
// Stop the loop
CHECK_EQ(uv_prepare_stop(prep_), 0);
auto prep_close = [](uv_handle_t* handle) {
delete reinterpret_cast<uv_prepare_t*>(handle);
};
uv_close(reinterpret_cast<uv_handle_t*>(prep_), prep_close);
prep_ = nullptr;
}
ssize_t Http2Session::OnMaxFrameSizePadding(size_t frameLen,
size_t maxPayloadLen) {
DEBUG_HTTP2("Http2Session: using max frame size padding\n");
return maxPayloadLen;
}
ssize_t Http2Session::OnCallbackPadding(size_t frameLen,
size_t maxPayloadLen) {
DEBUG_HTTP2("Http2Session: using callback padding\n");
Isolate* isolate = env()->isolate();
Local<Context> context = env()->context();
HandleScope handle_scope(isolate);
Context::Scope context_scope(context);
#if defined(DEBUG) && DEBUG
CHECK(object()->Has(context, env()->ongetpadding_string()).FromJust());
#endif
AliasedBuffer<uint32_t, v8::Uint32Array>& buffer =
env()->http2_state()->padding_buffer;
buffer[PADDING_BUF_FRAME_LENGTH] = frameLen;
buffer[PADDING_BUF_MAX_PAYLOAD_LENGTH] = maxPayloadLen;
buffer[PADDING_BUF_RETURN_VALUE] = frameLen;
MakeCallback(env()->ongetpadding_string(), 0, nullptr);
uint32_t retval = buffer[PADDING_BUF_RETURN_VALUE];
retval = std::min(retval, static_cast<uint32_t>(maxPayloadLen));
retval = std::max(retval, static_cast<uint32_t>(frameLen));
return retval;
}
void Http2Session::SetNextStreamID(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
nghttp2_session* s = session->session();
int32_t id = args[0]->Int32Value(env->context()).ToChecked();
DEBUG_HTTP2("Http2Session: setting next stream id to %d\n", id);
nghttp2_session_set_next_stream_id(s, id);
}
void HttpErrorString(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
uint32_t val = args[0]->Uint32Value(env->context()).ToChecked();
args.GetReturnValue().Set(
OneByteString(env->isolate(), nghttp2_strerror(val)));
}
// Serializes the settings object into a Buffer instance that
// would be suitable, for instance, for creating the Base64
// output for an HTTP2-Settings header field.
void PackSettings(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Http2Settings settings(env);
args.GetReturnValue().Set(settings.Pack());
}
// Used to fill in the spec defined initial values for each setting.
void RefreshDefaultSettings(const FunctionCallbackInfo<Value>& args) {
DEBUG_HTTP2("Http2Session: refreshing default settings\n");
Environment* env = Environment::GetCurrent(args);
Http2Settings::RefreshDefaults(env);
}
template <get_setting fn>
void Http2Session::RefreshSettings(const FunctionCallbackInfo<Value>& args) {
DEBUG_HTTP2("Http2Session: refreshing settings for session\n");
Environment* env = Environment::GetCurrent(args);
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
Http2Settings::Update(env, session, fn);
}
// Used to fill in the spec defined initial values for each setting.
void RefreshSessionState(const FunctionCallbackInfo<Value>& args) {
DEBUG_HTTP2("Http2Session: refreshing session state\n");
Environment* env = Environment::GetCurrent(args);
#if defined(DEBUG) && DEBUG
CHECK_EQ(args.Length(), 1);
CHECK(args[0]->IsObject());
#endif
AliasedBuffer<double, v8::Float64Array>& buffer =
env->http2_state()->session_state_buffer;
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args[0].As<Object>());
nghttp2_session* s = session->session();
buffer[IDX_SESSION_STATE_EFFECTIVE_LOCAL_WINDOW_SIZE] =
nghttp2_session_get_effective_local_window_size(s);
buffer[IDX_SESSION_STATE_EFFECTIVE_RECV_DATA_LENGTH] =
nghttp2_session_get_effective_recv_data_length(s);
buffer[IDX_SESSION_STATE_NEXT_STREAM_ID] =
nghttp2_session_get_next_stream_id(s);
buffer[IDX_SESSION_STATE_LOCAL_WINDOW_SIZE] =
nghttp2_session_get_local_window_size(s);
buffer[IDX_SESSION_STATE_LAST_PROC_STREAM_ID] =
nghttp2_session_get_last_proc_stream_id(s);
buffer[IDX_SESSION_STATE_REMOTE_WINDOW_SIZE] =
nghttp2_session_get_remote_window_size(s);
buffer[IDX_SESSION_STATE_OUTBOUND_QUEUE_SIZE] =
nghttp2_session_get_outbound_queue_size(s);
buffer[IDX_SESSION_STATE_HD_DEFLATE_DYNAMIC_TABLE_SIZE] =
nghttp2_session_get_hd_deflate_dynamic_table_size(s);
buffer[IDX_SESSION_STATE_HD_INFLATE_DYNAMIC_TABLE_SIZE] =
nghttp2_session_get_hd_inflate_dynamic_table_size(s);
}
void RefreshStreamState(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
#if defined(DEBUG) && DEBUG
CHECK_EQ(args.Length(), 2);
CHECK(args[0]->IsObject());
CHECK(args[1]->IsNumber());
#endif
int32_t id = args[1]->Int32Value(env->context()).ToChecked();
DEBUG_HTTP2("Http2Session: refreshing stream %d state\n", id);
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args[0].As<Object>());
nghttp2_session* s = session->session();
Nghttp2Stream* stream;
AliasedBuffer<double, v8::Float64Array>& buffer =
env->http2_state()->stream_state_buffer;
if ((stream = session->FindStream(id)) == nullptr) {
buffer[IDX_STREAM_STATE] = NGHTTP2_STREAM_STATE_IDLE;
buffer[IDX_STREAM_STATE_WEIGHT] =
buffer[IDX_STREAM_STATE_SUM_DEPENDENCY_WEIGHT] =
buffer[IDX_STREAM_STATE_LOCAL_CLOSE] =
buffer[IDX_STREAM_STATE_REMOTE_CLOSE] =
buffer[IDX_STREAM_STATE_LOCAL_WINDOW_SIZE] = 0;
return;
}
nghttp2_stream* str =
nghttp2_session_find_stream(s, stream->id());
if (str == nullptr) {
buffer[IDX_STREAM_STATE] = NGHTTP2_STREAM_STATE_IDLE;
buffer[IDX_STREAM_STATE_WEIGHT] =
buffer[IDX_STREAM_STATE_SUM_DEPENDENCY_WEIGHT] =
buffer[IDX_STREAM_STATE_LOCAL_CLOSE] =
buffer[IDX_STREAM_STATE_REMOTE_CLOSE] =
buffer[IDX_STREAM_STATE_LOCAL_WINDOW_SIZE] = 0;
} else {
buffer[IDX_STREAM_STATE] =
nghttp2_stream_get_state(str);
buffer[IDX_STREAM_STATE_WEIGHT] =
nghttp2_stream_get_weight(str);
buffer[IDX_STREAM_STATE_SUM_DEPENDENCY_WEIGHT] =
nghttp2_stream_get_sum_dependency_weight(str);
buffer[IDX_STREAM_STATE_LOCAL_CLOSE] =
nghttp2_session_get_stream_local_close(s, id);
buffer[IDX_STREAM_STATE_REMOTE_CLOSE] =
nghttp2_session_get_stream_remote_close(s, id);
buffer[IDX_STREAM_STATE_LOCAL_WINDOW_SIZE] =
nghttp2_session_get_stream_local_window_size(s, id);
}
}
void Http2Session::New(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
#if defined(DEBUG) && DEBUG
CHECK(args.IsConstructCall());
#endif
int val = args[0]->IntegerValue(env->context()).ToChecked();
nghttp2_session_type type = static_cast<nghttp2_session_type>(val);
DEBUG_HTTP2("Http2Session: creating a session of type: %d\n", type);
new Http2Session(env, args.This(), type);
}
// Capture the stream that this session will use to send and receive data
void Http2Session::Consume(const FunctionCallbackInfo<Value>& args) {
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
#if defined(DEBUG) && DEBUG
CHECK(args[0]->IsExternal());
#endif
session->Consume(args[0].As<External>());
}
void Http2Session::Destroy(const FunctionCallbackInfo<Value>& args) {
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
DEBUG_HTTP2("Http2Session: destroying session %d\n", session->type());
Environment* env = Environment::GetCurrent(args);
Local<Context> context = env->context();
bool skipUnconsume = args[0]->BooleanValue(context).ToChecked();
if (!skipUnconsume)
session->Unconsume();
session->Close();
}
void Http2Session::Destroying(const FunctionCallbackInfo<Value>& args) {
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
DEBUG_HTTP2("Http2Session: preparing to destroy session %d\n",
session->type());
session->MarkDestroying();
}
void Http2Session::SubmitPriority(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
Local<Context> context = env->context();
int32_t id = args[0]->Int32Value(context).ToChecked();
Http2Priority priority(env, args[1], args[2], args[3]);
bool silent = args[4]->BooleanValue(context).ToChecked();
DEBUG_HTTP2("Http2Session: submitting priority for stream %d", id);
Nghttp2Stream* stream;
if (!(stream = session->FindStream(id))) {
// invalid stream
return args.GetReturnValue().Set(NGHTTP2_ERR_INVALID_STREAM_ID);
}
args.GetReturnValue().Set(stream->SubmitPriority(*priority, silent));
}
void Http2Session::SubmitSettings(const FunctionCallbackInfo<Value>& args) {
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
Environment* env = session->env();
Http2Settings settings(env);
args.GetReturnValue().Set(
session->Nghttp2Session::SubmitSettings(*settings, settings.length()));
}
void Http2Session::SubmitRstStream(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Local<Context> context = env->context();
#if defined(DEBUG) && DEBUG
CHECK(args[0]->IsNumber());
CHECK(args[1]->IsNumber());
#endif
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
int32_t id = args[0]->Int32Value(context).ToChecked();
uint32_t code = args[1]->Uint32Value(context).ToChecked();
Nghttp2Stream* stream;
if (!(stream = session->FindStream(id))) {
// invalid stream
return args.GetReturnValue().Set(NGHTTP2_ERR_INVALID_STREAM_ID);
}
DEBUG_HTTP2("Http2Session: sending rst_stream for stream %d, code: %d\n",
id, code);
args.GetReturnValue().Set(stream->SubmitRstStream(code));
}
void Http2Session::SubmitRequest(const FunctionCallbackInfo<Value>& args) {
// args[0] Array of headers
// args[1] options int
// args[2] parentStream ID (for priority spec)
// args[3] weight (for priority spec)
// args[4] exclusive boolean (for priority spec)
#if defined(DEBUG) && DEBUG
CHECK(args[0]->IsArray());
#endif
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
Environment* env = session->env();
Local<Context> context = env->context();
Isolate* isolate = env->isolate();
Local<Array> headers = args[0].As<Array>();
int options = args[1]->IntegerValue(context).ToChecked();
Http2Priority priority(env, args[2], args[3], args[4]);
DEBUG_HTTP2("Http2Session: submitting request: headers: %d, options: %d\n",
headers->Length(), options);
Headers list(isolate, context, headers);
int32_t ret = session->Nghttp2Session::SubmitRequest(*priority,
*list, list.length(),
nullptr, options);
DEBUG_HTTP2("Http2Session: request submitted, response: %d\n", ret);
args.GetReturnValue().Set(ret);
}
void Http2Session::SubmitResponse(const FunctionCallbackInfo<Value>& args) {
#if defined(DEBUG) && DEBUG
CHECK(args[0]->IsNumber());
CHECK(args[1]->IsArray());
#endif
Http2Session* session;
Nghttp2Stream* stream;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
Environment* env = session->env();
Local<Context> context = env->context();
Isolate* isolate = env->isolate();
int32_t id = args[0]->Int32Value(context).ToChecked();
Local<Array> headers = args[1].As<Array>();
int options = args[2]->IntegerValue(context).ToChecked();
DEBUG_HTTP2("Http2Session: submitting response for stream %d: headers: %d, "
"options: %d\n", id, headers->Length(), options);
if (!(stream = session->FindStream(id))) {
return args.GetReturnValue().Set(NGHTTP2_ERR_INVALID_STREAM_ID);
}
Headers list(isolate, context, headers);
args.GetReturnValue().Set(
stream->SubmitResponse(*list, list.length(), options));
}
void Http2Session::SubmitFile(const FunctionCallbackInfo<Value>& args) {
#if defined(DEBUG) && DEBUG
CHECK(args[0]->IsNumber()); // Stream ID
CHECK(args[1]->IsNumber()); // File Descriptor
CHECK(args[2]->IsArray()); // Headers
CHECK(args[3]->IsNumber()); // Offset
CHECK(args[4]->IsNumber()); // Length
#endif
Http2Session* session;
Nghttp2Stream* stream;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
Environment* env = session->env();
Local<Context> context = env->context();
Isolate* isolate = env->isolate();
int32_t id = args[0]->Int32Value(context).ToChecked();
int fd = args[1]->Int32Value(context).ToChecked();
Local<Array> headers = args[2].As<Array>();
int64_t offset = args[3]->IntegerValue(context).ToChecked();
int64_t length = args[4]->IntegerValue(context).ToChecked();
int options = args[5]->IntegerValue(context).ToChecked();
#if defined(DEBUG) && DEBUG
CHECK_GE(offset, 0);
#endif
DEBUG_HTTP2("Http2Session: submitting file %d for stream %d: headers: %d, "
"end-stream: %d\n", fd, id, headers->Length());
if (!(stream = session->FindStream(id))) {
return args.GetReturnValue().Set(NGHTTP2_ERR_INVALID_STREAM_ID);
}
session->chunks_sent_since_last_write_ = 0;
Headers list(isolate, context, headers);
args.GetReturnValue().Set(stream->SubmitFile(fd, *list, list.length(),
offset, length, options));
}
void Http2Session::SendHeaders(const FunctionCallbackInfo<Value>& args) {
#if defined(DEBUG) && DEBUG
CHECK(args[0]->IsNumber());
CHECK(args[1]->IsArray());
#endif
Http2Session* session;
Nghttp2Stream* stream;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
Environment* env = session->env();
Local<Context> context = env->context();
Isolate* isolate = env->isolate();
int32_t id = args[0]->Int32Value(env->context()).ToChecked();
Local<Array> headers = args[1].As<Array>();
DEBUG_HTTP2("Http2Session: sending informational headers for stream %d, "
"count: %d\n", id, headers->Length());
if (!(stream = session->FindStream(id))) {
return args.GetReturnValue().Set(NGHTTP2_ERR_INVALID_STREAM_ID);
}
Headers list(isolate, context, headers);
args.GetReturnValue().Set(stream->SubmitInfo(*list, list.length()));
}
void Http2Session::ShutdownStream(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
#if defined(DEBUG) && DEBUG
CHECK(args[0]->IsNumber());
#endif
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
Nghttp2Stream* stream;
int32_t id = args[0]->Int32Value(env->context()).ToChecked();
DEBUG_HTTP2("Http2Session: shutting down stream %d\n", id);
if (!(stream = session->FindStream(id))) {
return args.GetReturnValue().Set(NGHTTP2_ERR_INVALID_STREAM_ID);
}
stream->Shutdown();
}
void Http2Session::StreamReadStart(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
#if defined(DEBUG) && DEBUG
CHECK(args[0]->IsNumber());
#endif
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
Nghttp2Stream* stream;
int32_t id = args[0]->Int32Value(env->context()).ToChecked();
if (!(stream = session->FindStream(id))) {
return args.GetReturnValue().Set(NGHTTP2_ERR_INVALID_STREAM_ID);
}
stream->ReadStart();
}
void Http2Session::StreamReadStop(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
#if defined(DEBUG) && DEBUG
CHECK(args[0]->IsNumber());
#endif
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
Nghttp2Stream* stream;
int32_t id = args[0]->Int32Value(env->context()).ToChecked();
if (!(stream = session->FindStream(id))) {
return args.GetReturnValue().Set(NGHTTP2_ERR_INVALID_STREAM_ID);
}
stream->ReadStop();
}
void Http2Session::SendShutdownNotice(
const FunctionCallbackInfo<Value>& args) {
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
session->SubmitShutdownNotice();
}
void Http2Session::SubmitGoaway(const FunctionCallbackInfo<Value>& args) {
Http2Session* session;
Environment* env = Environment::GetCurrent(args);
Local<Context> context = env->context();
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
uint32_t errorCode = args[0]->Uint32Value(context).ToChecked();
int32_t lastStreamID = args[1]->Int32Value(context).ToChecked();
Local<Value> opaqueData = args[2];
uint8_t* data = NULL;
size_t length = 0;
if (opaqueData->BooleanValue(context).ToChecked()) {
THROW_AND_RETURN_UNLESS_BUFFER(env, opaqueData);
SPREAD_BUFFER_ARG(opaqueData, buf);
data = reinterpret_cast<uint8_t*>(buf_data);
length = buf_length;
}
DEBUG_HTTP2("Http2Session: initiating immediate shutdown. "
"last-stream-id: %d, code: %d, opaque-data: %d\n",
lastStreamID, errorCode, length);
int status = nghttp2_submit_goaway(session->session(),
NGHTTP2_FLAG_NONE,
lastStreamID,
errorCode,
data, length);
args.GetReturnValue().Set(status);
}
void Http2Session::DestroyStream(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
#if defined(DEBUG) && DEBUG
CHECK_EQ(args.Length(), 1);
CHECK(args[0]->IsNumber());
#endif
int32_t id = args[0]->Int32Value(env->context()).ToChecked();
DEBUG_HTTP2("Http2Session: destroy stream %d\n", id);
Nghttp2Stream* stream;
if (!(stream = session->FindStream(id))) {
return args.GetReturnValue().Set(NGHTTP2_ERR_INVALID_STREAM_ID);
}
stream->Destroy();
}
void Http2Session::FlushData(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Http2Session* session;
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
#if defined(DEBUG) && DEBUG
CHECK_EQ(args.Length(), 1);
CHECK(args[0]->IsNumber());
#endif
int32_t id = args[0]->Int32Value(env->context()).ToChecked();
DEBUG_HTTP2("Http2Session: flushing data to js for stream %d\n", id);
Nghttp2Stream* stream;
if (!(stream = session->FindStream(id))) {
return args.GetReturnValue().Set(NGHTTP2_ERR_INVALID_STREAM_ID);
}
stream->ReadResume();
}
void Http2Session::UpdateChunksSent(const FunctionCallbackInfo<Value>& args) {
Http2Session* session;
Environment* env = Environment::GetCurrent(args);
Isolate* isolate = env->isolate();
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
HandleScope scope(isolate);
uint32_t length = session->chunks_sent_since_last_write_;
session->object()->Set(env->context(),
env->chunks_sent_since_last_write_string(),
Integer::NewFromUnsigned(isolate, length)).FromJust();
args.GetReturnValue().Set(length);
}
void Http2Session::SubmitPushPromise(const FunctionCallbackInfo<Value>& args) {
Http2Session* session;
Environment* env = Environment::GetCurrent(args);
Local<Context> context = env->context();
Isolate* isolate = env->isolate();
ASSIGN_OR_RETURN_UNWRAP(&session, args.Holder());
#if defined(DEBUG) && DEBUG
CHECK(args[0]->IsNumber()); // parent stream ID
CHECK(args[1]->IsArray()); // headers array
#endif
Nghttp2Stream* parent;
int32_t id = args[0]->Int32Value(context).ToChecked();
Local<Array> headers = args[1].As<Array>();
int options = args[2]->IntegerValue(context).ToChecked();
DEBUG_HTTP2("Http2Session: submitting push promise for stream %d: "
"options: %d, headers: %d\n", id, options,
headers->Length());
if (!(parent = session->FindStream(id))) {
return args.GetReturnValue().Set(NGHTTP2_ERR_INVALID_STREAM_ID);
}
Headers list(isolate, context, headers);
int32_t ret = parent->SubmitPushPromise(*list, list.length(),
nullptr, options);
DEBUG_HTTP2("Http2Session: push promise submitted, ret: %d\n", ret);
args.GetReturnValue().Set(ret);
}
int Http2Session::DoWrite(WriteWrap* req_wrap,
uv_buf_t* bufs,
size_t count,
uv_stream_t* send_handle) {
Environment* env = req_wrap->env();
Local<Object> req_wrap_obj = req_wrap->object();
Local<Context> context = env->context();
Nghttp2Stream* stream;
{
Local<Value> val =
req_wrap_obj->Get(context, env->stream_string()).ToLocalChecked();
int32_t id = val->Int32Value(context).ToChecked();
if (!val->IsNumber() || !(stream = FindStream(id))) {
// invalid stream
req_wrap->Dispatched();
req_wrap->Done(0);
return NGHTTP2_ERR_INVALID_STREAM_ID;
}
}
chunks_sent_since_last_write_ = 0;
nghttp2_stream_write_t* req = new nghttp2_stream_write_t;
req->data = req_wrap;
auto AfterWrite = [](nghttp2_stream_write_t* req, int status) {
WriteWrap* wrap = static_cast<WriteWrap*>(req->data);
wrap->Done(status);
delete req;
};
req_wrap->Dispatched();
stream->Write(req, bufs, count, AfterWrite);
return 0;
}
WriteWrap* Http2Session::AllocateSend() {
HandleScope scope(env()->isolate());
auto AfterWrite = [](WriteWrap* req, int status) {
req->Dispose();
};
Local<Object> obj =
env()->write_wrap_constructor_function()
->NewInstance(env()->context()).ToLocalChecked();
// Base the amount allocated on the remote peers max frame size
uint32_t size =
nghttp2_session_get_remote_settings(
session(),
NGHTTP2_SETTINGS_MAX_FRAME_SIZE);
// Max frame size + 9 bytes for the header
return WriteWrap::New(env(), obj, this, AfterWrite, size + 9);
}
void Http2Session::Send(WriteWrap* req, char* buf, size_t length) {
DEBUG_HTTP2("Http2Session: Attempting to send data\n");
if (stream_ == nullptr || !stream_->IsAlive() || stream_->IsClosing()) {
return;
}
chunks_sent_since_last_write_++;
uv_buf_t actual = uv_buf_init(buf, length);
if (stream_->DoWrite(req, &actual, 1, nullptr)) {
req->Dispose();
}
}
void Http2Session::OnTrailers(Nghttp2Stream* stream,
const SubmitTrailers& submit_trailers) {
DEBUG_HTTP2("Http2Session: prompting for trailers on stream %d\n",
stream->id());
Local<Context> context = env()->context();
Isolate* isolate = env()->isolate();
HandleScope scope(isolate);
Context::Scope context_scope(context);
Local<Value> argv[1] = {
Integer::New(isolate, stream->id())
};
Local<Value> ret = MakeCallback(env()->ontrailers_string(),
arraysize(argv), argv).ToLocalChecked();
if (!ret.IsEmpty()) {
if (ret->IsArray()) {
Local<Array> headers = ret.As<Array>();
if (headers->Length() > 0) {
Headers trailers(isolate, context, headers);
submit_trailers.Submit(*trailers, trailers.length());
}
}
}
}
void Http2Session::OnHeaders(
Nghttp2Stream* stream,
nghttp2_header* headers,
size_t count,
nghttp2_headers_category cat,
uint8_t flags) {
Local<Context> context = env()->context();
Isolate* isolate = env()->isolate();
Context::Scope context_scope(context);
HandleScope scope(isolate);
Local<String> name_str;
Local<String> value_str;
Local<Array> holder = Array::New(isolate);
Local<Function> fn = env()->push_values_to_array_function();
Local<Value> argv[NODE_PUSH_VAL_TO_ARRAY_MAX * 2];
#if defined(DEBUG) && DEBUG
CHECK_LE(cat, NGHTTP2_HCAT_HEADERS);
#endif
// The headers are passed in above as a queue of nghttp2_header structs.
// The following converts that into a JS array with the structure:
// [name1, value1, name2, value2, name3, value3, name3, value4] and so on.
// That array is passed up to the JS layer and converted into an Object form
// like {name1: value1, name2: value2, name3: [value3, value4]}. We do it
// this way for performance reasons (it's faster to generate and pass an
// array than it is to generate and pass the object).
size_t n = 0;
while (count > 0) {
size_t j = 0;
while (count > 0 && j < arraysize(argv) / 2) {
nghttp2_header item = headers[n++];
// The header name and value are passed as external one-byte strings
name_str =
ExternalHeader::New<true>(env(), item.name).ToLocalChecked();
value_str =
ExternalHeader::New<false>(env(), item.value).ToLocalChecked();
argv[j * 2] = name_str;
argv[j * 2 + 1] = value_str;
count--;
j++;
}
// For performance, we pass name and value pairs to array.protototype.push
// in batches of size NODE_PUSH_VAL_TO_ARRAY_MAX * 2 until there are no
// more items to push.
if (j > 0) {
fn->Call(env()->context(), holder, j * 2, argv).ToLocalChecked();
}
}
Local<Value> args[4] = {
Integer::New(isolate, stream->id()),
Integer::New(isolate, cat),
Integer::New(isolate, flags),
holder
};
MakeCallback(env()->onheaders_string(), arraysize(args), args);
}
void Http2Session::OnStreamClose(int32_t id, uint32_t code) {
Isolate* isolate = env()->isolate();
Local<Context> context = env()->context();
HandleScope scope(isolate);
Context::Scope context_scope(context);
Local<Value> argv[2] = {
Integer::New(isolate, id),
Integer::NewFromUnsigned(isolate, code)
};
MakeCallback(env()->onstreamclose_string(), arraysize(argv), argv);
}
void Http2Session::OnDataChunk(
Nghttp2Stream* stream,
uv_buf_t* chunk) {
Isolate* isolate = env()->isolate();
Local<Context> context = env()->context();
HandleScope scope(isolate);
Local<Object> obj = Object::New(isolate);
obj->Set(context,
env()->id_string(),
Integer::New(isolate, stream->id())).FromJust();
ssize_t len = -1;
Local<Object> buf;
if (chunk != nullptr) {
len = chunk->len;
buf = Buffer::New(isolate, chunk->base, len).ToLocalChecked();
}