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Copy pathClientHttp2.cpp
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188 lines (128 loc) · 4.63 KB
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#include "ClientHttp2.h"
#include "../../transfer/http2/HPack.h"
#include <array>
#include <random>
namespace HttpClient
{
ClientHttp2::ClientHttp2(Socket::Adapter *sock, Http2::OutStream *stream)
: ClientProtocol(sock), stream(stream)
{
}
ClientHttp2::~ClientHttp2() noexcept
{
delete this->stream;
}
static uint8_t getPaddingSize(const size_t dataSize)
{
if (0 == dataSize)
{
return 0;
}
std::random_device rd;
uint8_t padding = rd();
while (dataSize <= padding)
{
padding /= 2;
}
return padding;
}
bool ClientHttp2::sendHeaders(const Http::StatusCode status, std::vector<std::pair<std::string, std::string> > &headers, const std::chrono::milliseconds &timeout, const bool endStream) const
{
std::vector<char> buf;
buf.reserve(4096);
buf.resize(Http2::FRAME_HEADER_SIZE + sizeof(uint8_t) );
headers.emplace(headers.begin(), ":status", std::to_string(static_cast<int>(status) ) );
HPack::pack(buf, headers, this->stream->dynamic_table);
uint32_t data_size = buf.size() - Http2::FRAME_HEADER_SIZE - sizeof(uint8_t);
const uint8_t padding = getPaddingSize(data_size);
const uint16_t padding_size = padding + sizeof(uint8_t);
if (data_size + padding_size > this->stream->settings.max_frame_size)
{
data_size = this->stream->settings.max_frame_size - padding_size;
}
const size_t frame_size = data_size + padding_size;
buf.resize(frame_size + Http2::FRAME_HEADER_SIZE);
Http2::FrameFlag flags = Http2::FrameFlag::END_HEADERS;
if (endStream)
{
flags |= Http2::FrameFlag::END_STREAM;
}
flags |= Http2::FrameFlag::PADDED;
buf[Http2::FRAME_HEADER_SIZE] = padding;
if (padding)
{
std::fill(buf.end() - padding, buf.end(), 0);
}
this->stream->setHttp2FrameHeader(reinterpret_cast<uint8_t *>(buf.data() ), frame_size, Http2::FrameType::HEADERS, flags);
const std::unique_lock<std::mutex> lock(*this->stream->mtx);
return this->sock->nonblock_send(buf.data(), buf.size(), timeout) > 0;
}
void ClientHttp2::sendWindowUpdate(const uint32_t size, const std::chrono::milliseconds &timeout) const
{
std::array<uint8_t, Http2::FRAME_HEADER_SIZE + sizeof(uint32_t)> buf;
uint8_t *addr = buf.data();
addr = this->stream->setHttp2FrameHeader(addr, sizeof(uint32_t), Http2::FrameType::WINDOW_UPDATE, Http2::FrameFlag::EMPTY);
*reinterpret_cast<uint32_t *>(addr) = ::htonl(size);
const std::unique_lock<std::mutex> lock(*this->stream->mtx);
this->sock->nonblock_send(buf.data(), buf.size(), timeout);
}
long ClientHttp2::sendData(const void *src, const size_t size, const std::chrono::milliseconds &timeout, const bool endStream) const
{
const uint8_t *data = reinterpret_cast<const uint8_t *>(src);
std::vector<uint8_t> buf;
buf.reserve(this->stream->settings.max_frame_size + Http2::FRAME_HEADER_SIZE);
size_t total = 0;
while (total < size)
{
size_t data_size = (size - total < this->stream->settings.max_frame_size) ? size - total : this->stream->settings.max_frame_size;
const uint8_t padding = getPaddingSize(data_size);
const uint16_t padding_size = padding + sizeof(uint8_t);
if (data_size + padding_size > this->stream->settings.max_frame_size)
{
data_size = this->stream->settings.max_frame_size - padding_size;
}
const size_t frame_size = data_size + padding_size;
buf.resize(frame_size + Http2::FRAME_HEADER_SIZE);
if (static_cast<int32_t>(this->stream->window_size_out - this->stream->settings.max_frame_size) <= 0)
{
size_t update_size = this->stream->settings.initial_window_size + (size - total) - this->stream->window_size_out;
if (update_size > Http2::MAX_WINDOW_UPDATE)
{
update_size = Http2::MAX_WINDOW_UPDATE;
}
this->sendWindowUpdate(static_cast<uint32_t>(update_size), timeout);
this->stream->window_size_out += update_size;
}
Http2::FrameFlag flags = Http2::FrameFlag::EMPTY;
if (endStream && (total + data_size >= 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.begin() + 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)
{
total = 0;
break;
}
this->stream->window_size_out -= frame_size;
data += data_size;
total += data_size;
}
return static_cast<long>(total);
}
};