140 lines
3.7 KiB
C++
140 lines
3.7 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/actor/actor.h"
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#include "td/actor/ConcurrentScheduler.h"
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#include "td/net/HttpHeaderCreator.h"
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#include "td/net/HttpInboundConnection.h"
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#include "td/net/TcpListener.h"
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#include "td/utils/buffer.h"
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#include "td/utils/logging.h"
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#include "td/utils/port/detail/PollableFd.h"
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#include "td/utils/port/SocketFd.h"
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#include "td/utils/Slice.h"
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#include "td/utils/Status.h"
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#include <array>
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namespace td {
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// HttpInboundConnection header
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static int cnt = 0;
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class HelloWorld final : public Actor {
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public:
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explicit HelloWorld(SocketFd socket_fd) : socket_fd_(std::move(socket_fd)) {
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}
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private:
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SocketFd socket_fd_;
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std::array<char, 1024> read_buf;
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size_t read_new_lines{0};
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std::string hello_;
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std::string write_buf_;
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size_t write_pos_{0};
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void start_up() final {
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Scheduler::subscribe(socket_fd_.get_poll_info().extract_pollable_fd(this));
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HttpHeaderCreator hc;
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Slice content = "hello world";
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//auto content = BufferSlice("hello world");
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hc.init_ok();
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hc.set_keep_alive();
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hc.set_content_size(content.size());
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hc.add_header("Server", "TDLib/test");
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hc.add_header("Date", "Thu Dec 14 01:41:50 2017");
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hc.add_header("Content-Type:", "text/html");
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hello_ = hc.finish(content).ok().str();
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}
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void loop() final {
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auto status = do_loop();
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if (status.is_error()) {
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Scheduler::unsubscribe(socket_fd_.get_poll_info().get_pollable_fd_ref());
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stop();
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LOG(ERROR) << "CLOSE: " << status;
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}
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}
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Status do_loop() {
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sync_with_poll(socket_fd_);
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TRY_STATUS(read_loop());
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TRY_STATUS(write_loop());
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if (can_close_local(socket_fd_)) {
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return Status::Error("CLOSE");
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}
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return Status::OK();
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}
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Status write_loop() {
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while (can_write_local(socket_fd_) && write_pos_ < write_buf_.size()) {
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TRY_RESULT(written, socket_fd_.write(Slice(write_buf_).substr(write_pos_)));
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write_pos_ += written;
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if (write_pos_ == write_buf_.size()) {
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write_pos_ = 0;
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write_buf_.clear();
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}
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}
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return Status::OK();
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}
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Status read_loop() {
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while (can_read_local(socket_fd_)) {
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TRY_RESULT(read_size, socket_fd_.read(MutableSlice(read_buf.data(), read_buf.size())));
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for (size_t i = 0; i < read_size; i++) {
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if (read_buf[i] == '\n') {
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read_new_lines++;
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if (read_new_lines == 2) {
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read_new_lines = 0;
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write_buf_.append(hello_);
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}
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}
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}
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}
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return Status::OK();
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}
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};
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const int N = 0;
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class Server final : public TcpListener::Callback {
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public:
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void start_up() final {
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listener_ = create_actor<TcpListener>("Listener", 8082, ActorOwn<TcpListener::Callback>(actor_id(this)));
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}
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void accept(SocketFd fd) final {
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LOG(ERROR) << "ACCEPT " << cnt++;
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pos_++;
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auto scheduler_id = pos_ % (N != 0 ? N : 1) + (N != 0);
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create_actor_on_scheduler<HelloWorld>("HttpInboundConnection", scheduler_id, std::move(fd)).release();
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}
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void hangup() final {
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// may be it should be default?..
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LOG(ERROR) << "Hanging up..";
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stop();
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}
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private:
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ActorOwn<TcpListener> listener_;
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int pos_{0};
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};
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int main() {
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SET_VERBOSITY_LEVEL(VERBOSITY_NAME(ERROR));
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auto scheduler = make_unique<ConcurrentScheduler>();
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scheduler->init(N);
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scheduler->create_actor_unsafe<Server>(0, "Server").release();
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scheduler->start();
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while (scheduler->run_main(10)) {
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// empty
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}
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scheduler->finish();
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return 0;
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}
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} // namespace td
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int main() {
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return td::main();
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}
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