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ServerHttp2Protocol.cpp
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227 lines (176 loc) · 5.28 KB
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#include "ServerHttp2Protocol.h"
#include "../../utils/Utils.h"
#include "../../transfer/http2/HPack.h"
#include <random>
namespace HttpServer
{
ServerHttp2Protocol::ServerHttp2Protocol(
Socket::Adapter &sock,
const ServerSettings &settings,
ServerControls &controls,
Http2::IncStream *stream
) noexcept
: ServerProtocol(sock, settings, controls), stream(stream)
{
}
uint8_t ServerHttp2Protocol::getPaddingSize(const size_t dataSize)
{
if (0 == dataSize) {
return 0;
}
std::random_device rd;
uint8_t padding = uint8_t(rd());
while (dataSize <= padding) {
padding /= 2;
}
return padding;
}
bool ServerHttp2Protocol::sendHeaders(
const Http::StatusCode status,
std::vector<std::pair<std::string, std::string> > &headers,
const std::chrono::milliseconds &timeout,
const bool endStream
) const {
headers.emplace(
headers.begin(),
":status",
std::to_string(static_cast<int>(status))
);
std::vector<char> buf;
buf.reserve(4096);
buf.resize(Http2::FRAME_HEADER_SIZE);
HPack::pack(buf, headers, this->stream->conn.encoding_dynamic_table);
const uint32_t frame_size = uint32_t(
buf.size() - Http2::FRAME_HEADER_SIZE
);
Http2::FrameFlag flags = Http2::FrameFlag::END_HEADERS;
if (endStream) {
flags |= Http2::FrameFlag::END_STREAM;
}
this->stream->setHttp2FrameHeader(
reinterpret_cast<uint8_t *>(buf.data() ),
frame_size,
Http2::FrameType::HEADERS,
flags
);
const std::unique_lock<std::mutex> lock(this->stream->conn.sync.mtx);
return this->sock.nonblock_send(buf.data(), buf.size(), timeout) > 0;
}
long ServerHttp2Protocol::sendData(
const void *src,
size_t size,
const std::chrono::milliseconds &timeout,
DataTransfer *dt
) const {
const uint8_t *data = reinterpret_cast<const uint8_t *>(src);
const Http2::ConnectionSettings &setting = this->stream->conn.client_settings;
std::vector<uint8_t> buf;
buf.reserve(setting.max_frame_size + Http2::FRAME_HEADER_SIZE);
long send_size = 0;
while (size != 0)
{
// TODO: test with data_size == 1 (padding length == 0)
size_t data_size = setting.max_frame_size < size
? setting.max_frame_size
: size;
const uint8_t padding = getPaddingSize(data_size);
const uint16_t padding_size = padding + sizeof(uint8_t);
if (padding_size) {
if (data_size + padding_size > setting.max_frame_size) {
data_size = setting.max_frame_size - padding_size;
}
}
const uint32_t frame_size = static_cast<uint32_t>(
data_size + padding_size
);
buf.resize(frame_size + Http2::FRAME_HEADER_SIZE);
/* if (this->stream->window_size_out - frame_size <= 0)
{
size_t update_size = (dt->full_size - dt->send_total) - this->stream->window_size_out;
if (update_size > Http2::MAX_WINDOW_UPDATE) {
update_size = Http2::MAX_WINDOW_UPDATE;
}
sendWindowUpdate(this->sock, rp, uint32_t(update_size) );
this->stream->window_size_out += update_size;
}*/
Http2::FrameFlag flags = Http2::FrameFlag::EMPTY;
if (dt->send_total + data_size >= dt->full_size) {
flags |= Http2::FrameFlag::END_STREAM;
}
size_t cur = Http2::FRAME_HEADER_SIZE;
if (padding_size) {
flags |= Http2::FrameFlag::PADDED;
buf[cur] = padding;
++cur;
}
this->stream->setHttp2FrameHeader(
buf.data(),
frame_size,
Http2::FrameType::DATA,
flags
);
std::copy(
data,
data + data_size,
buf.data() + cur
);
if (padding) {
std::fill(
buf.end() - padding,
buf.end(),
0
);
}
this->stream->lock();
const long sended = this->sock.nonblock_send(
buf.data(),
buf.size(),
timeout
);
this->stream->unlock();
if (sended <= 0) {
send_size = sended;
break;
}
data += data_size;
send_size += long(data_size);
dt->send_total += data_size;
// stream->window_size_out -= frame_size;
size -= data_size;
}
return send_size;
}
bool ServerHttp2Protocol::packRequestParameters(
std::vector<char> &buf,
const struct Request &req,
const std::string &rootDir
) const {
Utils::packNumber(buf, static_cast<size_t>(Transfer::ProtocolVariant::HTTP_2) );
Utils::packString(buf, rootDir);
Utils::packString(buf, req.host);
Utils::packString(buf, req.path);
Utils::packString(buf, req.method);
Utils::packNumber(buf, this->stream->stream_id);
Utils::packNumber(buf, this->stream->conn.client_settings.header_table_size);
Utils::packNumber(buf, this->stream->conn.client_settings.enable_push);
Utils::packNumber(buf, this->stream->conn.client_settings.max_concurrent_streams);
Utils::packNumber(buf, this->stream->conn.client_settings.initial_window_size);
Utils::packNumber(buf, this->stream->conn.client_settings.max_frame_size);
Utils::packNumber(buf, this->stream->conn.client_settings.max_header_list_size);
Utils::packContainer(buf, this->stream->conn.encoding_dynamic_table.getList() );
Utils::packPointer(buf, &this->stream->conn.sync.mtx);
Utils::packContainer(buf, req.incoming_headers);
Utils::packContainer(buf, req.incoming_data);
Utils::packFilesIncoming(buf, req.incoming_files);
return true;
}
void ServerHttp2Protocol::unpackResponseParameters(
struct Request &req,
const void *src
) const {
Utils::unpackContainer(
req.outgoing_headers,
reinterpret_cast<const uint8_t *>(src)
);
}
}