93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
|
|
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
|
|
|
|
#pragma once
|
|
|
|
// Helper RAII over unix udp client socket.
|
|
// Will throw on construction if the socket creation failed.
|
|
|
|
#ifdef _WIN32
|
|
# error "include udp_client-windows.h instead"
|
|
#endif
|
|
|
|
#include <spdlog/common.h>
|
|
#include <spdlog/details/os.h>
|
|
|
|
#include <sys/socket.h>
|
|
#include <arpa/inet.h>
|
|
#include <unistd.h>
|
|
#include <netdb.h>
|
|
#include <netinet/udp.h>
|
|
|
|
#include <string>
|
|
|
|
namespace spdlog {
|
|
namespace details {
|
|
|
|
class udp_client
|
|
{
|
|
static constexpr int TX_BUFFER_SIZE = 1024 * 10;
|
|
int socket_ = -1;
|
|
struct sockaddr_in sockAddr_;
|
|
|
|
|
|
void cleanup_()
|
|
{
|
|
if (socket_ != -1)
|
|
{
|
|
::close(socket_);
|
|
socket_ = -1;
|
|
}
|
|
}
|
|
|
|
public:
|
|
udp_client(const std::string &host, uint16_t port)
|
|
{
|
|
socket_ = ::socket(PF_INET, SOCK_DGRAM, 0);
|
|
if (socket_ < 0)
|
|
{
|
|
throw_spdlog_ex("error: Create Socket Failed!");
|
|
}
|
|
|
|
int option_value = TX_BUFFER_SIZE;
|
|
if (::setsockopt(socket_, SOL_SOCKET, SO_SNDBUF, reinterpret_cast<const char *>(&option_value), sizeof(option_value)) < 0)
|
|
{
|
|
cleanup_();
|
|
throw_spdlog_ex("error: setsockopt(SO_SNDBUF) Failed!");
|
|
}
|
|
|
|
sockAddr_.sin_family = AF_INET;
|
|
sockAddr_.sin_port = htons(port);
|
|
|
|
if (::inet_aton(host.c_str(), &sockAddr_.sin_addr) == 0) {
|
|
cleanup_();
|
|
throw_spdlog_ex("error: Invalid address!");
|
|
}
|
|
|
|
::memset(sockAddr_.sin_zero, 0x00, sizeof(sockAddr_.sin_zero));
|
|
}
|
|
|
|
~udp_client()
|
|
{
|
|
cleanup_();
|
|
}
|
|
|
|
int fd() const
|
|
{
|
|
return socket_;
|
|
}
|
|
|
|
// Send exactly n_bytes of the given data.
|
|
// On error close the connection and throw.
|
|
void send(const char *data, size_t n_bytes)
|
|
{
|
|
ssize_t toslen = 0;
|
|
socklen_t tolen = sizeof(struct sockaddr);
|
|
if ((toslen = ::sendto(socket_, data, n_bytes, 0, (struct sockaddr *)&sockAddr_, tolen)) == -1)
|
|
{
|
|
throw_spdlog_ex("sendto(2) failed", errno);
|
|
}
|
|
}
|
|
};
|
|
} // namespace details
|
|
} // namespace spdlog
|