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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "td/actor/actor.h"
#include "td/net/HttpHeaderCreator.h"
#include "td/net/HttpInboundConnection.h"
#include "td/net/TcpListener.h"
#include "td/utils/buffer.h"
#include "td/utils/logging.h"
#include "td/utils/port/Fd.h"
#include "td/utils/port/SocketFd.h"
#include "td/utils/Slice.h"
#include "td/utils/Status.h"
#include <array>
namespace td {
// HttpInboundConnection header
static int cnt = 0;
class HelloWorld : public Actor {
public:
explicit HelloWorld(SocketFd socket_fd) : socket_fd_(std::move(socket_fd)) {
}
private:
SocketFd socket_fd_;
std::array<char, 1024> read_buf;
size_t read_new_lines{0};
std::string hello_;
std::string write_buf_;
size_t write_pos_{0};
void start_up() override {
socket_fd_.get_fd().set_observer(this);
subscribe(socket_fd_.get_fd());
HttpHeaderCreator hc;
Slice content = "hello world";
//auto content = BufferSlice("hello world");
hc.init_ok();
hc.set_keep_alive();
hc.set_content_size(content.size());
hc.add_header("Server", "TDLib/test");
hc.add_header("Date", "Thu Dec 14 01:41:50 2017");
hc.add_header("Content-Type:", "text/html");
hello_ = hc.finish(content).ok().str();
}
void loop() override {
auto status = do_loop();
if (status.is_error()) {
unsubscribe(socket_fd_.get_fd());
stop();
LOG(ERROR) << "CLOSE: " << status;
}
}
Status do_loop() {
TRY_STATUS(read_loop());
TRY_STATUS(write_loop());
if (can_close(socket_fd_)) {
return Status::Error("CLOSE");
}
return Status::OK();
}
Status write_loop() {
while (can_write(socket_fd_) && write_pos_ < write_buf_.size()) {
TRY_RESULT(written, socket_fd_.write(Slice(write_buf_).substr(write_pos_)));
write_pos_ += written;
if (write_pos_ == write_buf_.size()) {
write_pos_ = 0;
write_buf_.clear();
}
}
return Status::OK();
}
Status read_loop() {
while (can_read(socket_fd_)) {
TRY_RESULT(read_size, socket_fd_.read(MutableSlice(read_buf.data(), read_buf.size())));
for (size_t i = 0; i < read_size; i++) {
if (read_buf[i] == '\n') {
read_new_lines++;
if (read_new_lines == 2) {
read_new_lines = 0;
write_buf_.append(hello_);
}
}
}
}
return Status::OK();
}
};
const int N = 0;
class Server : public TcpListener::Callback {
public:
void start_up() override {
listener_ = create_actor<TcpListener>("Listener", 8082, ActorOwn<TcpListener::Callback>(actor_id(this)));
}
void accept(SocketFd fd) override {
LOG(ERROR) << "ACCEPT " << cnt++;
pos_++;
auto scheduler_id = pos_ % (N != 0 ? N : 1) + (N != 0);
create_actor_on_scheduler<HelloWorld>("HttpInboundConnection", scheduler_id, std::move(fd)).release();
}
void hangup() override {
// may be it should be default?..
LOG(ERROR) << "hangup..";
stop();
}
private:
ActorOwn<TcpListener> listener_;
int pos_{0};
};
int main() {
SET_VERBOSITY_LEVEL(VERBOSITY_NAME(ERROR));
auto scheduler = make_unique<ConcurrentScheduler>();
scheduler->init(N);
scheduler->create_actor_unsafe<Server>(0, "Server").release();
scheduler->start();
while (scheduler->run_main(10)) {
// empty
}
scheduler->finish();
return 0;
}
} // namespace td
int main() {
return td::main();
}
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