HttpConnection.h

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// Copyright 2024 libsese
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 
#pragma once
 
#include <asio.hpp>
#include <asio/ssl/stream.hpp>
 
#include <sese/service/iocp/IOBuf.h>
#include <sese/net/http/Range.h>
#include <sese/io/File.h>
 
#include <sese/internal/service/http/Handleable.h>
 
namespace sese::internal::service::http {
class HttpServiceImpl;
 
struct HttpConnection : Handleable, std::enable_shared_from_this<HttpConnection> {
    using Ptr = std::shared_ptr<HttpConnection>;
 
    Ptr getPtr() { return shared_from_this(); } // NOLINT
 
    HttpConnection(const std::shared_ptr<HttpServiceImpl> &service, asio::io_context &io_context, const sese::net::IPAddress::Ptr &addr);
 
    virtual ~HttpConnection() = default;
 
    asio::system_timer timer;
 
    void reset();
 
    size_t expect_length;
    size_t real_length;
    char send_buffer[MTU_VALUE]{};
    bool is0x0a = false;
    iocp::IOBuf io_buffer;
    std::unique_ptr<iocp::IOBufNode> node;
    io::ByteBuilder dynamic_buffer;
 
    std::weak_ptr<HttpServiceImpl> service;
 
    void readHeader();
 
    void readBody();
 
    void handleRequest();
 
    void writeHeader();
 
    void writeBody();
 
    virtual void writeBlock(const char *buffer, size_t length,
                            const std::function<void(const asio::error_code &code)> &callback) = 0;
 
    virtual void asyncReadSome(const asio::mutable_buffers_1 &buffer,
                               const std::function<void(const asio::error_code &error, std::size_t bytes_transferred)> &
                               callback) = 0;
 
    virtual void checkKeepalive() = 0;
 
    virtual void disponse();
 
    void writeSingleRange();
 
    void writeRanges();
};
 
struct HttpConnectionImpl final : HttpConnection {
    using Ptr = std::shared_ptr<HttpConnectionImpl>;
    using Socket = asio::ip::tcp::socket;
    using SharedSocket = std::shared_ptr<Socket>;
 
    Ptr getPtr() { return std::reinterpret_pointer_cast<HttpConnectionImpl>(shared_from_this()); } // NOLINT
 
    SharedSocket socket;
 
    HttpConnectionImpl(const std::shared_ptr<HttpServiceImpl> &service, asio::io_context &context,
                       const sese::net::IPAddress::Ptr &addr, SharedSocket socket);
 
    void writeBlock(const char *buffer, size_t length,
                    const std::function<void(const asio::error_code &code)> &callback) override;
 
    void asyncReadSome(const asio::mutable_buffers_1 &buffer,
                       const std::function<void(const asio::error_code &error, std::size_t bytes_transferred)> &
                       callback) override;
 
    void checkKeepalive() override;
};
 
struct HttpsConnectionImpl final : HttpConnection {
    using Ptr = std::shared_ptr<HttpsConnectionImpl>;
    using Stream = asio::ssl::stream<asio::ip::tcp::socket>;
    using SharedStream = std::shared_ptr<Stream>;
 
    Ptr getPtr() { return std::reinterpret_pointer_cast<HttpsConnectionImpl>(shared_from_this()); } // NOLINT
 
    SharedStream stream;
 
    HttpsConnectionImpl(const std::shared_ptr<HttpServiceImpl> &service, asio::io_context &context,
                        const sese::net::IPAddress::Ptr &addr,SharedStream stream);
 
    ~HttpsConnectionImpl() override;
 
    void writeBlock(const char *buffer, size_t length,
                    const std::function<void(const asio::error_code &code)> &callback) override;
 
    void asyncReadSome(const asio::mutable_buffers_1 &buffer,
                       const std::function<void(const asio::error_code &error, std::size_t bytes_transferred)> &
                       callback) override;
 
    void checkKeepalive() override;
};
 
}