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/*
* Copyright 2022-2025 Frederico de Oliveira Linhares
*
* 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.
*/
#include "connection.hpp"
#include <iostream>
namespace BluCat::NET
{
void
Connection::read_header()
{
asio::async_read(
this->socket, asio::buffer(
&this->reading_message.header, sizeof(MessageHeader)),
[this](std::error_code error, std::size_t length)
{
if(!error)
{
if(this->reading_message.header.size > 0)
{
this->reading_message.body.resize(this->reading_message.header.size);
this->read_body();
}
else
{
this->reading_message.body.resize(0);
this->messages.push_back(this->reading_message);
this->read_header();
}
}
else
{
std::cout << "Failed to read header: " << error.message() << std::endl;
this->connection_callback->end_connection(this->index);
}
});
}
void
Connection::read_body()
{
asio::async_read(
this->socket, asio::buffer(
this->reading_message.body.data(), this->reading_message.body.size()),
[this](std::error_code error, std::size_t length)
{
if(!error)
{
this->messages.push_back(this->reading_message);
this->read_header();
}
else
{
std::cout << "Failed to read body." << std::endl;
this->connection_callback->end_connection(this->index);
}
});
}
bool
Connection::send(const uint32_t id, const std::vector<uint8_t> &msg)
{
std::vector<uint8_t> *buffered_msg =
new std::vector<uint8_t>(msg.size() + 8);
{ // Create header
std::memcpy(buffered_msg->data(), &id, 4);
uint32_t size{static_cast<uint32_t>(msg.size())};
std::memcpy(buffered_msg->data() + 4, &size, 4);
}
// Append string to buffer.
copy(msg.begin(), msg.end(), buffered_msg->begin() + 8);
asio::async_write(
this->socket, asio::buffer(buffered_msg->data(), buffered_msg->size()),
[this, buffered_msg](std::error_code error, std::size_t length)
{
if(error)
{
std::cout << "Failed to send message: " << error.message() <<
std::endl;
this->connection_callback->end_connection(this->index);
}
delete buffered_msg;
});
return true;
}
void
Connection::read_messages()
{
while(this->messages.size() > 0)
this->message_callback->read_message(
std::move(this->messages.pop_back()));
}
Connection::Connection(
MessageCallback *message_callback,
ConnectionCallback *connection_callback,
asio::io_context &io_context, asio::ip::tcp::socket socket,
unsigned long index):
message_callback{message_callback},
connection_callback{connection_callback},
io_context{io_context},
socket{std::move(socket)},
index{index}
{
this->read_header();
}
Connection::~Connection()
{
this->message_callback->disconnect();
delete message_callback;
this->socket.close();
}
}
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