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227 changes: 0 additions & 227 deletions
227
diag-client-lib/lib/boost-support/include/boost-support/client/tcp/tcp_client.h
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/* Diagnostic Client library | ||
* Copyright (C) 2023 Avijit Dey | ||
* | ||
* This Source Code Form is subject to the terms of the Mozilla Public | ||
* License, v. 2.0. If a copy of the MPL was not distributed with this | ||
* file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
*/ | ||
#ifndef DIAG_CLIENT_LIB_LIB_BOOST_SUPPORT_CLIENT_TCP_TCP_CLIENT_H_ | ||
#define DIAG_CLIENT_LIB_LIB_BOOST_SUPPORT_CLIENT_TCP_TCP_CLIENT_H_ | ||
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#include <atomic> | ||
#include <condition_variable> | ||
#include <functional> | ||
#include <memory> | ||
#include <mutex> | ||
#include <thread> | ||
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#include "core/include/result.h" | ||
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namespace boost_support { | ||
namespace client { | ||
namespace tcp { | ||
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/** | ||
* @brief Client class used to handle transmission and reception of tcp message from socket | ||
* @tparam SocketType | ||
* The type of socket to read and write from/to | ||
*/ | ||
template<typename SocketType> | ||
class TcpClient final { | ||
public: | ||
/** | ||
* @brief Type alias for Tcp message | ||
*/ | ||
using TcpMessage = typename SocketType::TcpMessage; | ||
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/** | ||
* @brief Type alias for Tcp message pointer | ||
*/ | ||
using TcpMessagePtr = typename SocketType::TcpMessagePtr; | ||
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/** | ||
* @brief Type alias for Tcp message const pointer | ||
*/ | ||
using TcpMessageConstPtr = typename SocketType::TcpMessageConstPtr; | ||
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/** | ||
* @brief Tcp function template used for reception | ||
*/ | ||
using HandlerRead = std::function<void(TcpMessagePtr)>; | ||
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public: | ||
/** | ||
* @brief Constructs an instance of TcpClient | ||
* @param[in] socket | ||
* The socket used for read and writing messages | ||
* @param[in] handler_read | ||
* The handler to send received data to user | ||
*/ | ||
explicit TcpClient(SocketType socket) noexcept | ||
: socket_{std::move(socket)}, | ||
handler_read_{}, | ||
exit_request_{false}, | ||
running_{false}, | ||
cond_var_{}, | ||
thread_{}, | ||
mutex_{} {} | ||
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/** | ||
* @brief Deleted copy assignment and copy constructor | ||
*/ | ||
TcpClient(const TcpClient &other) noexcept = delete; | ||
TcpClient &operator=(const TcpClient &other) &noexcept = delete; | ||
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/** | ||
* @brief Deleted move assignment and move constructor | ||
*/ | ||
TcpClient(TcpClient &&other) noexcept = delete; | ||
TcpClient &operator=(TcpClient &&other) &noexcept = delete; | ||
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/** | ||
* @brief Destruct an instance of TcpClientSocket | ||
*/ | ||
~TcpClient() noexcept = default; | ||
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/** | ||
* @brief Function to set the read handler that is invoked when message is received | ||
* @details The ownership of provided read handler is moved | ||
* @param[in] read_handler | ||
* The handler to be set | ||
*/ | ||
void SetReadHandler(HandlerRead read_handler) { handler_read_ = std::move(read_handler); } | ||
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/** | ||
* @brief Initialize the client | ||
* @return Empty result on success otherwise error code | ||
*/ | ||
void Initialize() noexcept { | ||
// Open socket | ||
socket_.Open(); | ||
// Start thread to receive messages | ||
thread_ = std::thread([this]() { | ||
std::unique_lock<std::mutex> lck(mutex_); | ||
while (!exit_request_) { | ||
if (!running_) { | ||
cond_var_.wait(lck, [this]() { return exit_request_ || running_; }); | ||
} | ||
if (!exit_request_.load()) { | ||
if (running_) { | ||
lck.unlock(); | ||
running_ = ReadMessage(); | ||
lck.lock(); | ||
} | ||
} | ||
} | ||
}); | ||
} | ||
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/** | ||
* @brief Function to connect to remote ip address and port number | ||
* @param[in] host_ip_address | ||
* The host ip address | ||
* @param[in] host_port_num | ||
* The host port number | ||
* @return Empty result on success otherwise error code | ||
*/ | ||
auto ConnectToHost(std::string_view host_ip_address, std::uint16_t host_port_num) noexcept -> bool { | ||
return socket_.Connect(host_ip_address, host_port_num) | ||
.AndThen([this]() noexcept { | ||
{ // start reading | ||
std::lock_guard<std::mutex> lock{mutex_}; | ||
running_ = true; | ||
cond_var_.notify_all(); | ||
} | ||
}) | ||
.HasValue(); | ||
} | ||
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/** | ||
* @brief Function to Disconnect from host | ||
* @return Empty result on success otherwise error code | ||
*/ | ||
void DisconnectFromHost() noexcept { | ||
{ // stop reading | ||
std::lock_guard<std::mutex> lock{mutex_}; | ||
running_ = false; | ||
} | ||
socket_.Disconnect(); | ||
} | ||
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/** | ||
* @brief Function to trigger transmission | ||
* @param[in] message | ||
* The tcp message to be transmitted | ||
* @return Empty result on success otherwise error code | ||
*/ | ||
auto Transmit(TcpMessageConstPtr message) noexcept -> bool { return socket_.Transmit(std::move(message)).HasValue(); } | ||
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/** | ||
* @brief De-initialize the client | ||
* @return Empty result on success otherwise error code | ||
*/ | ||
void DeInitialize() noexcept { | ||
socket_.Close(); | ||
{ | ||
std::unique_lock<std::mutex> lck(mutex_); | ||
exit_request_ = true; | ||
running_ = false; | ||
} | ||
cond_var_.notify_all(); | ||
thread_.join(); | ||
} | ||
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private: | ||
/** | ||
* @brief Store socket used for reading and writing tcp message | ||
*/ | ||
SocketType socket_; | ||
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/** | ||
* @brief Store the handler | ||
*/ | ||
HandlerRead handler_read_; | ||
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/** | ||
* @brief Flag to terminate the thread | ||
*/ | ||
std::atomic_bool exit_request_; | ||
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/** | ||
* @brief Flag to start the thread | ||
*/ | ||
std::atomic_bool running_; | ||
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/** | ||
* @brief Conditional variable to block the thread | ||
*/ | ||
std::condition_variable cond_var_; | ||
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/** | ||
* @brief Store the thread | ||
*/ | ||
std::thread thread_; | ||
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/** | ||
* @brief mutex to lock critical section | ||
*/ | ||
std::mutex mutex_; | ||
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private: | ||
/** | ||
* @brief Function to send the received message to stored handler | ||
* @return True if message is read successfully, otherwise False | ||
*/ | ||
auto ReadMessage() -> bool { | ||
// Try reading from socket | ||
core_type::Result<TcpMessagePtr, typename SocketType::SocketError> read_result{socket_.Read()}; | ||
if (read_result.HasValue()) { | ||
if (handler_read_) { handler_read_(std::move(read_result).Value()); } | ||
} | ||
return read_result.HasValue(); | ||
} | ||
}; | ||
} // namespace tcp | ||
} // namespace client | ||
} // namespace boost_support | ||
#endif // DIAG_CLIENT_LIB_LIB_BOOST_SUPPORT_CLIENT_TCP_TCP_CLIENT_H_ | ||
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diag-client-lib/lib/boost-support/src/boost-support/connection/tcp/tcp_acceptor.cpp
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@@ -0,0 +1,32 @@ | ||
/* Diagnostic Client library | ||
* Copyright (C) 2023 Avijit Dey | ||
* | ||
* This Source Code Form is subject to the terms of the Mozilla Public | ||
* License, v. 2.0. If a copy of the MPL was not distributed with this | ||
* file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
*/ | ||
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#include "boost-support/connection/tcp/tcp_acceptor.h" | ||
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namespace boost_support { | ||
namespace connection { | ||
namespace tcp { | ||
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TcpAcceptor::TcpAcceptor(std::string_view local_ip_address, std::uint16_t local_port_num, | ||
boost::asio::io_context io_context) noexcept | ||
: acceptor_{io_context, | ||
Tcp::endpoint(TcpIpAddress::from_string(std::string{local_ip_address}.c_str()), local_port_num)} { | ||
acceptor_.listen(); | ||
} | ||
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std::optional<TcpAcceptor::Connection> TcpAcceptor::GetConnection(TcpAcceptor::HandlerRead read_handler) noexcept { | ||
using TcpErrorCodeType = boost::system::error_code; | ||
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//blocking accept | ||
acceptor_.accept() | ||
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} | ||
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} // namespace tcp | ||
} // namespace connection | ||
} // namespace boost_support |
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