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Simplification of Client::read_chunked

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This commit is contained in:
eidheim 2017-11-16 07:46:23 +01:00
commit af90d7598f
1 changed files with 17 additions and 30 deletions
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45
client_http.hpp
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@ -541,31 +541,19 @@ namespace SimpleWeb {
}
void read_chunked(const std::shared_ptr<Session> &session, const std::shared_ptr<asio::streambuf> &tmp_streambuf) {
if(tmp_streambuf->size() >= config.max_response_streambuf_size) {
session->callback(session->connection, make_error_code::make_error_code(errc::message_size));
return;
}
// chunked_streambuf is needed as new read buffer with its size adjusted depending on the size of tmp_streambuf
auto chunked_streambuf = std::make_shared<asio::streambuf>(config.max_response_streambuf_size - tmp_streambuf->size());
// Move excess read data from session->response->streambuf to chunked_streambuf
if(session->response->streambuf.size() > 0) {
std::ostream chunked_stream(chunked_streambuf.get());
chunked_stream << &session->response->streambuf;
}
session->connection->set_timeout();
asio::async_read_until(*session->connection->socket, *chunked_streambuf, "\r\n", [this, session, chunked_streambuf, tmp_streambuf](const error_code &ec, std::size_t bytes_transferred) {
asio::async_read_until(*session->connection->socket, session->response->streambuf, "\r\n", [this, session, tmp_streambuf](const error_code &ec, size_t bytes_transferred) {
session->connection->cancel_timeout();
auto lock = session->connection->handler_runner->continue_lock();
if(!lock)
return;
if((!ec || ec == asio::error::not_found) && chunked_streambuf->size() == chunked_streambuf->max_size()) {
if((!ec || ec == asio::error::not_found) && session->response->streambuf.size() == session->response->streambuf.max_size()) {
session->callback(session->connection, make_error_code::make_error_code(errc::message_size));
return;
}
if(!ec) {
std::string line;
std::istream chunked_stream(chunked_streambuf.get());
getline(chunked_stream, line);
getline(session->response->content, line);
bytes_transferred -= line.size() + 1;
line.pop_back();
unsigned long length;
@ -577,28 +565,27 @@ namespace SimpleWeb {
return;
}
auto num_additional_bytes = chunked_streambuf->size() - bytes_transferred;
auto num_additional_bytes = session->response->streambuf.size() - bytes_transferred;
auto post_process = [this, session, chunked_streambuf, tmp_streambuf, length]() {
std::istream chunked_stream(chunked_streambuf.get());
auto post_process = [this, session, tmp_streambuf, length]() {
std::ostream tmp_stream(tmp_streambuf.get());
if(length > 0) {
std::unique_ptr<char[]> buffer(new char[length]);
chunked_stream.read(buffer.get(), static_cast<std::streamsize>(length));
session->response->content.read(buffer.get(), static_cast<std::streamsize>(length));
tmp_stream.write(buffer.get(), static_cast<std::streamsize>(length));
if(tmp_streambuf->size() == tmp_streambuf->max_size()) {
session->callback(session->connection, make_error_code::make_error_code(errc::message_size));
return;
}
}
// Remove "\r\n"
chunked_stream.get();
chunked_stream.get();
session->response->content.get();
session->response->content.get();
if (length > 0) {
if (chunked_streambuf->size() > 0) {
std::ostream response_stream(&session->response->streambuf);
response_stream << chunked_streambuf.get();
}
if(length > 0)
this->read_chunked(session, tmp_streambuf);
}else {
else {
if(tmp_streambuf->size() > 0) {
std::ostream response_stream(&session->response->streambuf);
response_stream << tmp_streambuf.get();
@ -610,13 +597,13 @@ namespace SimpleWeb {
if((2 + length) > num_additional_bytes) {
session->connection->set_timeout();
asio::async_read(*session->connection->socket, *chunked_streambuf, asio::transfer_exactly(2 + length - num_additional_bytes), [this, session, chunked_streambuf, post_process](const error_code &ec, std::size_t /*bytes_transferred*/) {
asio::async_read(*session->connection->socket, session->response->streambuf, asio::transfer_exactly(2 + length - num_additional_bytes), [this, session, post_process](const error_code &ec, size_t /*bytes_transferred*/) {
session->connection->cancel_timeout();
auto lock = session->connection->handler_runner->continue_lock();
if(!lock)
return;
if(!ec) {
if(chunked_streambuf->size() == chunked_streambuf->max_size()) {
if(session->response->streambuf.size() == session->response->streambuf.max_size()) {
session->callback(session->connection, make_error_code::make_error_code(errc::message_size));
return;
}