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// Copyright (C) 2014-2017 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
// 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/.
#include <iomanip>
#include <sstream>
#include <boost/asio/ip/multicast.hpp>
#include "../include/endpoint_host.hpp"
#include "../include/udp_client_endpoint_impl.hpp"
#include "../../logging/include/logger.hpp"
#include "../../utility/include/utility.hpp"
namespace vsomeip {
udp_client_endpoint_impl::udp_client_endpoint_impl(
std::shared_ptr< endpoint_host > _host,
endpoint_type _local,
endpoint_type _remote,
boost::asio::io_service &_io)
: udp_client_endpoint_base_impl(_host, _local, _remote, _io,
VSOMEIP_MAX_UDP_MESSAGE_SIZE),
recv_buffer_(VSOMEIP_MAX_UDP_MESSAGE_SIZE, 0),
remote_address_(_remote.address()),
remote_port_(_remote.port()) {
}
udp_client_endpoint_impl::~udp_client_endpoint_impl() {
std::shared_ptr<endpoint_host> its_host = host_.lock();
if (its_host) {
its_host->release_port(local_.port(), false);
}
}
bool udp_client_endpoint_impl::is_local() const {
return false;
}
void udp_client_endpoint_impl::connect() {
std::lock_guard<std::mutex> its_lock(socket_mutex_);
// In case a client endpoint port was configured,
// bind to it before connecting
if (local_.port() != ILLEGAL_PORT) {
boost::system::error_code its_bind_error;
socket_->bind(local_, its_bind_error);
if(its_bind_error) {
VSOMEIP_WARNING << "tcp_client_endpoint::connect: "
"Error binding socket: " << its_bind_error.message();
}
}
socket_->async_connect(
remote_,
std::bind(
&udp_client_endpoint_base_impl::connect_cbk,
shared_from_this(),
std::placeholders::_1
)
);
}
void udp_client_endpoint_impl::start() {
boost::system::error_code its_error;
{
std::lock_guard<std::mutex> its_lock(socket_mutex_);
socket_->open(remote_.protocol(), its_error);
}
if (!its_error || its_error == boost::asio::error::already_open) {
connect();
} else {
VSOMEIP_WARNING << "udp_client_endpoint::connect: Error opening socket: "
<< its_error.message();
}
}
void udp_client_endpoint_impl::restart() {
is_connected_ = false;
{
std::lock_guard<std::mutex> its_lock(mutex_);
queue_.clear();
}
shutdown_and_close_socket();
start_connect_timer();
}
void udp_client_endpoint_impl::send_queued() {
message_buffer_ptr_t its_buffer;
if(queue_.size()) {
its_buffer = queue_.front();
} else {
return;
}
#if 0
std::stringstream msg;
msg << "ucei<" << remote_.address() << ":"
<< std::dec << remote_.port() << ">::sq: ";
for (std::size_t i = 0; i < its_buffer->size(); i++)
msg << std::hex << std::setw(2) << std::setfill('0')
<< (int)(*its_buffer)[i] << " ";
VSOMEIP_INFO << msg.str();
#endif
{
std::lock_guard<std::mutex> its_lock(socket_mutex_);
socket_->async_send(
boost::asio::buffer(*its_buffer),
std::bind(
&udp_client_endpoint_base_impl::send_cbk,
shared_from_this(),
std::placeholders::_1,
std::placeholders::_2
)
);
}
}
void udp_client_endpoint_impl::receive() {
std::lock_guard<std::mutex> its_lock(socket_mutex_);
if (!socket_->is_open()) {
return;
}
socket_->async_receive_from(
boost::asio::buffer(&recv_buffer_[0], max_message_size_),
remote_,
std::bind(
&udp_client_endpoint_impl::receive_cbk,
std::dynamic_pointer_cast<
udp_client_endpoint_impl
>(shared_from_this()),
std::placeholders::_1,
std::placeholders::_2
)
);
}
bool udp_client_endpoint_impl::get_remote_address(
boost::asio::ip::address &_address) const {
if (remote_address_.is_unspecified()) {
return false;
}
_address = remote_address_;
return true;
}
unsigned short udp_client_endpoint_impl::get_local_port() const {
std::lock_guard<std::mutex> its_lock(socket_mutex_);
boost::system::error_code its_error;
if (socket_->is_open()) {
endpoint_type its_endpoint = socket_->local_endpoint(its_error);
if (!its_error) {
return its_endpoint.port();
} else {
VSOMEIP_WARNING << "udp_client_endpoint_impl::get_local_port() "
<< " couldn't get local_endpoint: " << its_error.message();
}
}
return 0;
}
unsigned short udp_client_endpoint_impl::get_remote_port() const {
return remote_port_;
}
void udp_client_endpoint_impl::receive_cbk(
boost::system::error_code const &_error, std::size_t _bytes) {
if (_error == boost::asio::error::operation_aborted) {
// endpoint was stopped
return;
}
std::shared_ptr<endpoint_host> its_host = host_.lock();
if (!_error && 0 < _bytes && its_host) {
#if 0
std::stringstream msg;
msg << "ucei::rcb(" << _error.message() << "): ";
for (std::size_t i = 0; i < _bytes + recv_buffer_size_; ++i)
msg << std::hex << std::setw(2) << std::setfill('0')
<< (int) recv_buffer_[i] << " ";
VSOMEIP_INFO << msg.str();
#endif
std::size_t remaining_bytes = _bytes;
std::size_t i = 0;
do {
uint64_t read_message_size
= utility::get_message_size(&this->recv_buffer_[i],
remaining_bytes);
if (read_message_size > MESSAGE_SIZE_UNLIMITED) {
VSOMEIP_ERROR << "Message size exceeds allowed maximum!";
return;
}
uint32_t current_message_size = static_cast<uint32_t>(read_message_size);
if (current_message_size > VSOMEIP_SOMEIP_HEADER_SIZE &&
current_message_size <= remaining_bytes) {
if (remaining_bytes - current_message_size > remaining_bytes) {
VSOMEIP_ERROR << "buffer underflow in udp client endpoint ~> abort!";
return;
}
remaining_bytes -= current_message_size;
its_host->on_message(&recv_buffer_[i], current_message_size,
this, boost::asio::ip::address(),
VSOMEIP_ROUTING_CLIENT, remote_address_,
remote_port_);
} else {
VSOMEIP_ERROR << "Received a unreliable vSomeIP message with bad "
"length field. Message size: " << current_message_size
<< " Bytes. From: " << remote_.address() << ":"
<< remote_.port() << ". Dropping message.";
remaining_bytes = 0;
}
i += current_message_size;
} while (remaining_bytes > 0);
}
if (!_error) {
receive();
} else {
if (_error == boost::asio::error::connection_refused) {
shutdown_and_close_socket();
} else {
receive();
}
}
}
} // namespace vsomeip
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