jyapayne/Simple-Web-Server
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Fix pipelined requests handling

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brodo 2023-09-01 11:13:39 +02:00
commit 54eca45e5d
1 changed files with 44 additions and 19 deletions
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63
server_http.hpp
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@ -228,10 +228,16 @@ namespace SimpleWeb {
friend class Session;
asio::streambuf streambuf;
asio::streambuf content_streambuf;
std::weak_ptr<Connection> connection;
std::string optimization = std::to_string(0); // TODO: figure out what goes wrong in gcc optimization without this line
Request(std::size_t max_request_streambuf_size, const std::shared_ptr<Connection> &connection_) noexcept : streambuf(max_request_streambuf_size), connection(connection_), content(streambuf) {}
Request(std::size_t max_request_streambuf_size, const std::shared_ptr<Connection> &connection_) noexcept
: streambuf(max_request_streambuf_size), content_streambuf(max_request_streambuf_size), connection(connection_), content(content_streambuf) {}
Request(std::size_t max_request_streambuf_size, const std::shared_ptr<Connection> &connection_, asio::streambuf &&pending) noexcept
: streambuf(max_request_streambuf_size), content_streambuf(max_request_streambuf_size), connection(connection_), content(content_streambuf) {
std::ostream(&streambuf) << &pending;
}
public:
std::string method, path, query_string, http_version;
@ -348,6 +354,8 @@ namespace SimpleWeb {
class Session {
public:
Session(std::size_t max_request_streambuf_size, std::shared_ptr<Connection> connection_) noexcept : connection(std::move(connection_)), request(new Request(max_request_streambuf_size, connection)) {}
Session(std::size_t max_request_streambuf_size, std::shared_ptr<Connection> connection_, asio::streambuf &&s) noexcept
: connection(std::move(connection_)), request(new Request(max_request_streambuf_size, connection, std::move(s))) {}
std::shared_ptr<Connection> connection;
std::shared_ptr<Request> request;
@ -572,7 +580,8 @@ namespace SimpleWeb {
// streambuf (maybe some bytes of the content) is appended to in the async_read-function below (for retrieving content).
std::size_t num_additional_bytes = session->request->streambuf.size() - bytes_transferred;
if(!RequestMessage::parse(session->request->content, session->request->method, session->request->path,
std::istream istream(&session->request->streambuf);
if(!RequestMessage::parse(istream, session->request->method, session->request->path,
session->request->query_string, session->request->http_version, session->request->header)) {
if(this->on_error)
this->on_error(session->request, make_error_code::make_error_code(errc::protocol_error));
@ -598,8 +607,17 @@ namespace SimpleWeb {
this->on_error(session->request, make_error_code::make_error_code(errc::message_size));
return;
}
if(num_additional_bytes > 0) {
auto content_bytes = std::min<std::size_t>(content_length, (unsigned long long)num_additional_bytes);
auto &source = session->request->streambuf;
auto &target = session->request->content_streambuf;
target.commit(asio::buffer_copy(target.prepare(content_bytes), source.data(), content_bytes));
source.consume(content_bytes);
}
if(content_length > num_additional_bytes) {
asio::async_read(*session->connection->socket, session->request->streambuf, asio::transfer_exactly(content_length - num_additional_bytes), [this, session](const error_code &ec, std::size_t /*bytes_transferred*/) {
asio::async_read(*session->connection->socket, session->request->content_streambuf, asio::transfer_exactly(content_length - num_additional_bytes), [this, session](const error_code &ec, std::size_t /*bytes_transferred*/) {
auto lock = session->connection->handler_runner->continue_lock();
if(!lock)
return;
@ -610,9 +628,10 @@ namespace SimpleWeb {
this->on_error(session->request, ec);
});
}
else
else {
this->find_resource(session);
}
}
else if((header_it = session->request->header.find("Transfer-Encoding")) != session->request->header.end() && header_it->second == "chunked") {
// Expect hex number to not exceed 16 bytes (64-bit number), but take into account previous additional read bytes
auto chunk_size_streambuf = std::make_shared<asio::streambuf>(std::max<std::size_t>(16 + 2, session->request->streambuf.size()));
@ -654,12 +673,7 @@ namespace SimpleWeb {
return;
}
if(chunk_size == 0) {
this->find_resource(session);
return;
}
if(chunk_size + session->request->streambuf.size() > session->request->streambuf.max_size()) {
if(chunk_size + session->request->content_streambuf.size() > session->request->content_streambuf.max_size()) {
auto response = std::shared_ptr<Response>(new Response(session, this->config.timeout_content));
response->write(StatusCode::client_error_payload_too_large);
if(this->on_error)
@ -667,19 +681,30 @@ namespace SimpleWeb {
return;
}
auto next_step = [this, chunk_size](const std::shared_ptr<Session> &session, const std::shared_ptr<asio::streambuf> &chunk_size_streambuf) {
if(chunk_size == 0) {
// remaining bytes are the beginning of the next request
std::istream(chunk_size_streambuf.get()) >> &session->request->streambuf;
this->find_resource(session);
}
else {
this->read_chunked_transfer_encoded(session, chunk_size_streambuf);
}
};
auto num_additional_bytes = chunk_size_streambuf->size() - bytes_transferred;
auto bytes_to_move = std::min<std::size_t>(chunk_size, num_additional_bytes);
if(bytes_to_move > 0) {
// Move leftover bytes
auto &source = *chunk_size_streambuf;
auto &target = session->request->streambuf;
auto &target = session->request->content_streambuf;
target.commit(asio::buffer_copy(target.prepare(bytes_to_move), source.data(), bytes_to_move));
source.consume(bytes_to_move);
}
if(chunk_size > num_additional_bytes) {
asio::async_read(*session->connection->socket, session->request->streambuf, asio::transfer_exactly(chunk_size - num_additional_bytes), [this, session, chunk_size_streambuf](const error_code &ec, size_t /*bytes_transferred*/) {
asio::async_read(*session->connection->socket, session->request->content_streambuf, asio::transfer_exactly(chunk_size - num_additional_bytes), [this, session, chunk_size_streambuf, next_step](const error_code &ec, size_t /*bytes_transferred*/) {
auto lock = session->connection->handler_runner->continue_lock();
if(!lock)
return;
@ -687,12 +712,12 @@ namespace SimpleWeb {
if(!ec) {
// Remove "\r\n"
auto null_buffer = std::make_shared<asio::streambuf>(2);
asio::async_read(*session->connection->socket, *null_buffer, asio::transfer_exactly(2), [this, session, chunk_size_streambuf, null_buffer](const error_code &ec, size_t /*bytes_transferred*/) {
asio::async_read(*session->connection->socket, *null_buffer, asio::transfer_exactly(2), [this, session, chunk_size_streambuf, null_buffer, next_step](const error_code &ec, size_t /*bytes_transferred*/) {
auto lock = session->connection->handler_runner->continue_lock();
if(!lock)
return;
if(!ec)
read_chunked_transfer_encoded(session, chunk_size_streambuf);
next_step(session, chunk_size_streambuf);
else
this->on_error(session->request, ec);
});
@ -706,12 +731,12 @@ namespace SimpleWeb {
if(2 + chunk_size - num_additional_bytes == 1)
istream.get();
auto null_buffer = std::make_shared<asio::streambuf>(2);
asio::async_read(*session->connection->socket, *null_buffer, asio::transfer_exactly(2 + chunk_size - num_additional_bytes), [this, session, chunk_size_streambuf, null_buffer](const error_code &ec, size_t /*bytes_transferred*/) {
asio::async_read(*session->connection->socket, *null_buffer, asio::transfer_exactly(2 + chunk_size - num_additional_bytes), [this, session, chunk_size_streambuf, null_buffer, next_step](const error_code &ec, size_t /*bytes_transferred*/) {
auto lock = session->connection->handler_runner->continue_lock();
if(!lock)
return;
if(!ec)
read_chunked_transfer_encoded(session, chunk_size_streambuf);
next_step(session, chunk_size_streambuf);
else
this->on_error(session->request, ec);
});
@ -721,7 +746,7 @@ namespace SimpleWeb {
istream.get();
istream.get();
read_chunked_transfer_encoded(session, chunk_size_streambuf);
next_step(session, chunk_size_streambuf);
}
}
else if(this->on_error)
@ -778,13 +803,13 @@ namespace SimpleWeb {
if(case_insensitive_equal(it->second, "close"))
return;
else if(case_insensitive_equal(it->second, "keep-alive")) {
auto new_session = std::make_shared<Session>(this->config.max_request_streambuf_size, response->session->connection);
auto new_session = std::make_shared<Session>(this->config.max_request_streambuf_size, response->session->connection, std::move(response->session->request->streambuf));
this->read(new_session);
return;
}
}
if(response->session->request->http_version >= "1.1") {
auto new_session = std::make_shared<Session>(this->config.max_request_streambuf_size, response->session->connection);
auto new_session = std::make_shared<Session>(this->config.max_request_streambuf_size, response->session->connection, std::move(response->session->request->streambuf));
this->read(new_session);
return;
}