node/src/node_http2.h at master · tmarshall/node

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#ifndef SRC_NODE_HTTP2_H_

#define SRC_NODE_HTTP2_H_

#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#include "node_http2_core-inl.h"

#include "node_http2_state.h"

#include "stream_base-inl.h"

#include "string_bytes.h"

namespace node {

namespace http2 {

using v8::Array;

using v8::Context;

using v8::EscapableHandleScope;

using v8::Isolate;

using v8::MaybeLocal;

#define HTTP_KNOWN_METHODS(V) \

V(ACL, "ACL") \

V(BASELINE_CONTROL, "BASELINE-CONTROL") \

V(BIND, "BIND") \

V(CHECKIN, "CHECKIN") \

V(CHECKOUT, "CHECKOUT") \

V(CONNECT, "CONNECT") \

V(COPY, "COPY") \

V(DELETE, "DELETE") \

V(GET, "GET") \

V(HEAD, "HEAD") \

V(LABEL, "LABEL") \

V(LINK, "LINK") \

V(LOCK, "LOCK") \

V(MERGE, "MERGE") \

V(MKACTIVITY, "MKACTIVITY") \

V(MKCALENDAR, "MKCALENDAR") \

V(MKCOL, "MKCOL") \

V(MKREDIRECTREF, "MKREDIRECTREF") \

V(MKWORKSPACE, "MKWORKSPACE") \

V(MOVE, "MOVE") \

V(OPTIONS, "OPTIONS") \

V(ORDERPATCH, "ORDERPATCH") \

V(PATCH, "PATCH") \

V(POST, "POST") \

V(PRI, "PRI") \

V(PROPFIND, "PROPFIND") \

V(PROPPATCH, "PROPPATCH") \

V(PUT, "PUT") \

V(REBIND, "REBIND") \

V(REPORT, "REPORT") \

V(SEARCH, "SEARCH") \

V(TRACE, "TRACE") \

V(UNBIND, "UNBIND") \

V(UNCHECKOUT, "UNCHECKOUT") \

V(UNLINK, "UNLINK") \

V(UNLOCK, "UNLOCK") \

V(UPDATE, "UPDATE") \

V(UPDATEREDIRECTREF, "UPDATEREDIRECTREF") \

V(VERSION_CONTROL, "VERSION-CONTROL")

#define HTTP_KNOWN_HEADERS(V) \

V(STATUS, ":status") \

V(METHOD, ":method") \

V(AUTHORITY, ":authority") \

V(SCHEME, ":scheme") \

V(PATH, ":path") \

V(ACCEPT_CHARSET, "accept-charset") \

V(ACCEPT_ENCODING, "accept-encoding") \

V(ACCEPT_LANGUAGE, "accept-language") \

V(ACCEPT_RANGES, "accept-ranges") \

V(ACCEPT, "accept") \

V(ACCESS_CONTROL_ALLOW_CREDENTIALS, "access-control-allow-credentials") \

V(ACCESS_CONTROL_ALLOW_HEADERS, "access-control-allow-headers") \

V(ACCESS_CONTROL_ALLOW_METHODS, "access-control-allow-methods") \

V(ACCESS_CONTROL_ALLOW_ORIGIN, "access-control-allow-origin") \

V(ACCESS_CONTROL_EXPOSE_HEADERS, "access-control-expose-headers") \

V(ACCESS_CONTROL_MAX_AGE, "access-control-max-age") \

V(ACCESS_CONTROL_REQUEST_HEADERS, "access-control-request-headers") \

V(ACCESS_CONTROL_REQUEST_METHOD, "access-control-request-method") \

V(AGE, "age") \

V(ALLOW, "allow") \

V(AUTHORIZATION, "authorization") \

V(CACHE_CONTROL, "cache-control") \

V(CONNECTION, "connection") \

V(CONTENT_DISPOSITION, "content-disposition") \

V(CONTENT_ENCODING, "content-encoding") \

V(CONTENT_LANGUAGE, "content-language") \

V(CONTENT_LENGTH, "content-length") \

V(CONTENT_LOCATION, "content-location") \

V(CONTENT_MD5, "content-md5") \

V(CONTENT_RANGE, "content-range") \

V(CONTENT_TYPE, "content-type") \

V(COOKIE, "cookie") \

V(DATE, "date") \

V(DNT, "dnt") \

V(ETAG, "etag") \

V(EXPECT, "expect") \

V(EXPIRES, "expires") \

V(FORWARDED, "forwarded") \

V(FROM, "from") \

V(HOST, "host") \

V(IF_MATCH, "if-match") \

V(IF_MODIFIED_SINCE, "if-modified-since") \

V(IF_NONE_MATCH, "if-none-match") \

V(IF_RANGE, "if-range") \

V(IF_UNMODIFIED_SINCE, "if-unmodified-since") \

V(LAST_MODIFIED, "last-modified") \

V(LINK, "link") \

V(LOCATION, "location") \

V(MAX_FORWARDS, "max-forwards") \

V(PREFER, "prefer") \

V(PROXY_AUTHENTICATE, "proxy-authenticate") \

V(PROXY_AUTHORIZATION, "proxy-authorization") \

V(RANGE, "range") \

V(REFERER, "referer") \

V(REFRESH, "refresh") \

V(RETRY_AFTER, "retry-after") \

V(SERVER, "server") \

V(SET_COOKIE, "set-cookie") \

V(STRICT_TRANSPORT_SECURITY, "strict-transport-security") \

V(TRAILER, "trailer") \

V(TRANSFER_ENCODING, "transfer-encoding") \

V(TE, "te") \

V(TK, "tk") \

V(UPGRADE_INSECURE_REQUESTS, "upgrade-insecure-requests") \

V(UPGRADE, "upgrade") \

V(USER_AGENT, "user-agent") \

V(VARY, "vary") \

V(VIA, "via") \

V(WARNING, "warning") \

V(WWW_AUTHENTICATE, "www-authenticate") \

V(X_CONTENT_TYPE_OPTIONS, "x-content-type-options") \

V(X_FRAME_OPTIONS, "x-frame-options") \

V(HTTP2_SETTINGS, "http2-settings") \

V(KEEP_ALIVE, "keep-alive") \

V(PROXY_CONNECTION, "proxy-connection")

enum http_known_headers {

HTTP_KNOWN_HEADER_MIN,

#define V(name, value) HTTP_HEADER_##name,

HTTP_KNOWN_HEADERS(V)

#undef V

HTTP_KNOWN_HEADER_MAX

};

#define HTTP_STATUS_CODES(V) \

V(CONTINUE, 100) \

V(SWITCHING_PROTOCOLS, 101) \

V(PROCESSING, 102) \

V(OK, 200) \

V(CREATED, 201) \

V(ACCEPTED, 202) \

V(NON_AUTHORITATIVE_INFORMATION, 203) \

V(NO_CONTENT, 204) \

V(RESET_CONTENT, 205) \

V(PARTIAL_CONTENT, 206) \

V(MULTI_STATUS, 207) \

V(ALREADY_REPORTED, 208) \

V(IM_USED, 226) \

V(MULTIPLE_CHOICES, 300) \

V(MOVED_PERMANENTLY, 301) \

V(FOUND, 302) \

V(SEE_OTHER, 303) \

V(NOT_MODIFIED, 304) \

V(USE_PROXY, 305) \

V(TEMPORARY_REDIRECT, 307) \

V(PERMANENT_REDIRECT, 308) \

V(BAD_REQUEST, 400) \

V(UNAUTHORIZED, 401) \

V(PAYMENT_REQUIRED, 402) \

V(FORBIDDEN, 403) \

V(NOT_FOUND, 404) \

V(METHOD_NOT_ALLOWED, 405) \

V(NOT_ACCEPTABLE, 406) \

V(PROXY_AUTHENTICATION_REQUIRED, 407) \

V(REQUEST_TIMEOUT, 408) \

V(CONFLICT, 409) \

V(GONE, 410) \

V(LENGTH_REQUIRED, 411) \

V(PRECONDITION_FAILED, 412) \

V(PAYLOAD_TOO_LARGE, 413) \

V(URI_TOO_LONG, 414) \

V(UNSUPPORTED_MEDIA_TYPE, 415) \

V(RANGE_NOT_SATISFIABLE, 416) \

V(EXPECTATION_FAILED, 417) \

V(TEAPOT, 418) \

V(MISDIRECTED_REQUEST, 421) \

V(UNPROCESSABLE_ENTITY, 422) \

V(LOCKED, 423) \

V(FAILED_DEPENDENCY, 424) \

V(UNORDERED_COLLECTION, 425) \

V(UPGRADE_REQUIRED, 426) \

V(PRECONDITION_REQUIRED, 428) \

V(TOO_MANY_REQUESTS, 429) \

V(REQUEST_HEADER_FIELDS_TOO_LARGE, 431) \

V(UNAVAILABLE_FOR_LEGAL_REASONS, 451) \

V(INTERNAL_SERVER_ERROR, 500) \

V(NOT_IMPLEMENTED, 501) \

V(BAD_GATEWAY, 502) \

V(SERVICE_UNAVAILABLE, 503) \

V(GATEWAY_TIMEOUT, 504) \

V(HTTP_VERSION_NOT_SUPPORTED, 505) \

V(VARIANT_ALSO_NEGOTIATES, 506) \

V(INSUFFICIENT_STORAGE, 507) \

V(LOOP_DETECTED, 508) \

V(BANDWIDTH_LIMIT_EXCEEDED, 509) \

V(NOT_EXTENDED, 510) \

V(NETWORK_AUTHENTICATION_REQUIRED, 511)

enum http_status_codes {

#define V(name, code) HTTP_STATUS_##name = code,

HTTP_STATUS_CODES(V)

#undef V

};

enum padding_strategy_type {

// No padding strategy

PADDING_STRATEGY_NONE,

// Padding will ensure all data frames are maxFrameSize

PADDING_STRATEGY_MAX,

// Padding will be determined via JS callback

PADDING_STRATEGY_CALLBACK

};

#define NGHTTP2_ERROR_CODES(V) \

V(NGHTTP2_ERR_INVALID_ARGUMENT) \

V(NGHTTP2_ERR_BUFFER_ERROR) \

V(NGHTTP2_ERR_UNSUPPORTED_VERSION) \

V(NGHTTP2_ERR_WOULDBLOCK) \

V(NGHTTP2_ERR_PROTO) \

V(NGHTTP2_ERR_INVALID_FRAME) \

V(NGHTTP2_ERR_EOF) \

V(NGHTTP2_ERR_DEFERRED) \

V(NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE) \

V(NGHTTP2_ERR_STREAM_CLOSED) \

V(NGHTTP2_ERR_STREAM_CLOSING) \

V(NGHTTP2_ERR_STREAM_SHUT_WR) \

V(NGHTTP2_ERR_INVALID_STREAM_ID) \

V(NGHTTP2_ERR_INVALID_STREAM_STATE) \

V(NGHTTP2_ERR_DEFERRED_DATA_EXIST) \

V(NGHTTP2_ERR_START_STREAM_NOT_ALLOWED) \

V(NGHTTP2_ERR_GOAWAY_ALREADY_SENT) \

V(NGHTTP2_ERR_INVALID_HEADER_BLOCK) \

V(NGHTTP2_ERR_INVALID_STATE) \

V(NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) \

V(NGHTTP2_ERR_FRAME_SIZE_ERROR) \

V(NGHTTP2_ERR_HEADER_COMP) \

V(NGHTTP2_ERR_FLOW_CONTROL) \

V(NGHTTP2_ERR_INSUFF_BUFSIZE) \

V(NGHTTP2_ERR_PAUSE) \

V(NGHTTP2_ERR_TOO_MANY_INFLIGHT_SETTINGS) \

V(NGHTTP2_ERR_PUSH_DISABLED) \

V(NGHTTP2_ERR_DATA_EXIST) \

V(NGHTTP2_ERR_SESSION_CLOSING) \

V(NGHTTP2_ERR_HTTP_HEADER) \

V(NGHTTP2_ERR_HTTP_MESSAGING) \

V(NGHTTP2_ERR_REFUSED_STREAM) \

V(NGHTTP2_ERR_INTERNAL) \

V(NGHTTP2_ERR_CANCEL) \

V(NGHTTP2_ERR_FATAL) \

V(NGHTTP2_ERR_NOMEM) \

V(NGHTTP2_ERR_CALLBACK_FAILURE) \

V(NGHTTP2_ERR_BAD_CLIENT_MAGIC) \

V(NGHTTP2_ERR_FLOODED)

const char* nghttp2_errname(int rv) {

switch (rv) {

#define V(code) case code: return #code;

NGHTTP2_ERROR_CODES(V)

#undef V

default:

return "NGHTTP2_UNKNOWN_ERROR";

}

#define DEFAULT_SETTINGS_HEADER_TABLE_SIZE 4096

#define DEFAULT_SETTINGS_ENABLE_PUSH 1

#define DEFAULT_SETTINGS_INITIAL_WINDOW_SIZE 65535

#define DEFAULT_SETTINGS_MAX_FRAME_SIZE 16384

#define MAX_MAX_FRAME_SIZE 16777215

#define MIN_MAX_FRAME_SIZE DEFAULT_SETTINGS_MAX_FRAME_SIZE

#define MAX_INITIAL_WINDOW_SIZE 2147483647

class Http2Options {

public:

explicit Http2Options(Environment* env);

~Http2Options() {

nghttp2_option_del(options_);

}

nghttp2_option* operator*() const {

return options_;

}

void SetPaddingStrategy(padding_strategy_type val) {

CHECK_LE(val, PADDING_STRATEGY_CALLBACK);

padding_strategy_ = static_cast<padding_strategy_type>(val);

}

padding_strategy_type GetPaddingStrategy() {

return padding_strategy_;

}

private:

nghttp2_option* options_;

padding_strategy_type padding_strategy_ = PADDING_STRATEGY_NONE;

};

static const size_t kAllocBufferSize = 64 * 1024;

////

typedef uint32_t(*get_setting)(nghttp2_session* session,

nghttp2_settings_id id);

class Http2Session : public AsyncWrap,

public StreamBase,

public Nghttp2Session {

public:

Http2Session(Environment* env,

Local<Object> wrap,

nghttp2_session_type type) :

AsyncWrap(env, wrap, AsyncWrap::PROVIDER_HTTP2SESSION),

StreamBase(env) {

Wrap(object(), this);

Http2Options opts(env);

padding_strategy_ = opts.GetPaddingStrategy();

Init(env->event_loop(), type, *opts);

}

~Http2Session() override {

CHECK_EQ(false, persistent().IsEmpty());

ClearWrap(object());

persistent().Reset();

CHECK_EQ(true, persistent().IsEmpty());

}

static void OnStreamAllocImpl(size_t suggested_size,

uv_buf_t* buf,

void* ctx);

static void OnStreamReadImpl(ssize_t nread,

const uv_buf_t* bufs,

uv_handle_type pending,

void* ctx);

protected:

void OnFreeSession() override;

ssize_t OnMaxFrameSizePadding(size_t frameLength,

size_t maxPayloadLen);

ssize_t OnCallbackPadding(size_t frame,

size_t maxPayloadLen);

bool HasGetPaddingCallback() override {

return padding_strategy_ == PADDING_STRATEGY_MAX ||

padding_strategy_ == PADDING_STRATEGY_CALLBACK;

}

ssize_t GetPadding(size_t frameLength, size_t maxPayloadLen) override {

if (padding_strategy_ == PADDING_STRATEGY_MAX) {

return OnMaxFrameSizePadding(frameLength, maxPayloadLen);

}

CHECK_EQ(padding_strategy_, PADDING_STRATEGY_CALLBACK);

return OnCallbackPadding(frameLength, maxPayloadLen);

}

void OnHeaders(Nghttp2Stream* stream,

nghttp2_header_list* headers,

nghttp2_headers_category cat,

uint8_t flags) override;

void OnStreamClose(int32_t id, uint32_t code) override;

void Send(uv_buf_t* bufs, size_t total) override;

void OnDataChunk(Nghttp2Stream* stream, nghttp2_data_chunk_t* chunk) override;

void OnSettings(bool ack) override;

void OnPriority(int32_t stream,

int32_t parent,

int32_t weight,

int8_t exclusive) override;

void OnGoAway(int32_t lastStreamID,

uint32_t errorCode,

uint8_t* data,

size_t length) override;

void OnFrameError(int32_t id, uint8_t type, int error_code) override;

void OnTrailers(Nghttp2Stream* stream,

const SubmitT 528D railers& submit_trailers) override;

void AllocateSend(size_t recommended, uv_buf_t* buf) override;

int DoWrite(WriteWrap* w, uv_buf_t* bufs, size_t count,

uv_stream_t* send_handle) override;

AsyncWrap* GetAsyncWrap() override {

return static_cast<AsyncWrap*>(this);

}

void* Cast() override {

return reinterpret_cast<void*>(this);

}

// Required for StreamBase

bool IsAlive() override {

return true;

}

// Required for StreamBase

bool IsClosing() override {

return false;

}

// Required for StreamBase

int ReadStart() override { return 0; }

// Required for StreamBase

int ReadStop() override { return 0; }

// Required for StreamBase

int DoShutdown(ShutdownWrap* req_wrap) override {

return 0;

}

public:

void Consume(Local<External> external);

void Unconsume();

static void New(const FunctionCallbackInfo<Value>& args);

static void Consume(const FunctionCallbackInfo<Value>& args);

static void Unconsume(const FunctionCallbackInfo<Value>& args);

static void Destroying(const FunctionCallbackInfo<Value>& args);

static void Destroy(const FunctionCallbackInfo<Value>& args);

static void SubmitSettings(const FunctionCallbackInfo<Value>& args);

static void SubmitRstStream(const FunctionCallbackInfo<Value>& args);

static void SubmitResponse(const FunctionCallbackInfo<Value>& args);

static void SubmitFile(const FunctionCallbackInfo<Value>& args);

static void SubmitRequest(const FunctionCallbackInfo<Value>& args);

static void SubmitPushPromise(const FunctionCallbackInfo<Value>& args);

static void SubmitPriority(const FunctionCallbackInfo<Value>& args);

static void SendHeaders(const FunctionCallbackInfo<Value>& args);

static void ShutdownStream(const FunctionCallbackInfo<Value>& args);

static void StreamWrite(const FunctionCallbackInfo<Value>& args);

static void StreamReadStart(const FunctionCallbackInfo<Value>& args);

static void StreamReadStop(const FunctionCallbackInfo<Value>& args);

static void SetNextStreamID(const FunctionCallbackInfo<Value>& args);

static void SendShutdownNotice(const FunctionCallbackInfo<Value>& args);

static void SubmitGoaway(const FunctionCallbackInfo<Value>& args);

static void DestroyStream(const FunctionCallbackInfo<Value>& args);

template <get_setting fn>

static void GetSettings(const FunctionCallbackInfo<Value>& args);

size_t self_size() const override {

return sizeof(*this);

}

char* stream_alloc() {

return stream_buf_;

}

private:

StreamBase* stream_;

StreamResource::Callback<StreamResource::AllocCb> prev_alloc_cb_;

StreamResource::Callback<StreamResource::ReadCb> prev_read_cb_;

padding_strategy_type padding_strategy_ = PADDING_STRATEGY_NONE;

char stream_buf_[kAllocBufferSize];

};

class ExternalHeader :

public String::ExternalOneByteStringResource {

public:

explicit ExternalHeader(nghttp2_rcbuf* buf)

: buf_(buf), vec_(nghttp2_rcbuf_get_buf(buf)) {

}

~ExternalHeader() override {

nghttp2_rcbuf_decref(buf_);

buf_ = nullptr;

}

const char* data() const override {

return const_cast<const char*>(reinterpret_cast<char*>(vec_.base));

}

size_t length() const override {

return vec_.len;

}

static inline

MaybeLocal<String> GetInternalizedString(Environment* env,

const nghttp2_vec& vec) {

return String::NewFromOneByte(env->isolate(),

vec.base,

v8::NewStringType::kInternalized,

vec.len);

}

template<bool may_internalize>

static MaybeLocal<String> New(Environment* env, nghttp2_rcbuf* buf) {

if (nghttp2_rcbuf_is_static(buf)) {

auto& static_str_map = env->isolate_data()->http2_static_strs;

v8::Eternal<v8::String>& eternal = static_str_map[buf];

if (eternal.IsEmpty()) {

Local<String> str =

GetInternalizedString(env, nghttp2_rcbuf_get_buf(buf))

.ToLocalChecked();

eternal.Set(env->isolate(), str);

return str;

}

return eternal.Get(env->isolate());

}

nghttp2_vec vec = nghttp2_rcbuf_get_buf(buf);

if (vec.len == 0) {

nghttp2_rcbuf_decref(buf);

return String::Empty(env->isolate());

}

if (may_internalize && vec.len < 64) {

// This is a short header name, so there is a good chance V8 already has

// it internalized.

return GetInternalizedString(env, vec);

}

ExternalHeader* h_str = new ExternalHeader(buf);

MaybeLocal<String> str = String::NewExternalOneByte(env->isolate(), h_str);

if (str.IsEmpty())

delete h_str;

return str;

}

private:

nghttp2_rcbuf* buf_;

nghttp2_vec vec_;

};

class Headers {

public:

Headers(Isolate* isolate, Local<Context> context, Local<Array> headers);

~Headers() {}

nghttp2_nv* operator*() {

return reinterpret_cast<nghttp2_nv*>(*buf_);

}

size_t length() const {

return count_;

}

private:

size_t count_;

MaybeStackBuffer<char, 3000> buf_;

};

} // namespace http2

} // namespace node

#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#endif // SRC_NODE_HTTP2_H_

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