mirror of
https://github.com/pocoproject/poco.git
synced 2024-12-13 02:22:57 +01:00
88 lines
1.5 KiB
C++
88 lines
1.5 KiB
C++
//
|
|
// NTPClient.cpp
|
|
//
|
|
// Library: Net
|
|
// Package: NTP
|
|
// Module: NTPClient
|
|
//
|
|
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#include "Poco/Net/SocketAddress.h"
|
|
#include "Poco/Net/NTPClient.h"
|
|
#include "Poco/Net/NTPPacket.h"
|
|
#include "Poco/Net/DatagramSocket.h"
|
|
#include "Poco/Net/NetException.h"
|
|
|
|
|
|
using Poco::TimeoutException;
|
|
|
|
|
|
namespace Poco {
|
|
namespace Net {
|
|
|
|
|
|
NTPClient::NTPClient(IPAddress::Family family, int timeout):
|
|
_family(family), _timeout(timeout)
|
|
{
|
|
}
|
|
|
|
|
|
NTPClient::~NTPClient()
|
|
{
|
|
}
|
|
|
|
|
|
int NTPClient::request(const std::string& address) const
|
|
{
|
|
SocketAddress addr(address, 123);
|
|
return request(addr);
|
|
}
|
|
|
|
|
|
int NTPClient::request(SocketAddress& address) const
|
|
{
|
|
Poco::Net::SocketAddress sa;
|
|
DatagramSocket ntpSocket(_family);
|
|
ntpSocket.setReceiveTimeout(_timeout);
|
|
ntpSocket.bind(sa);
|
|
|
|
SocketAddress returnAddress;
|
|
|
|
NTPEventArgs eventArgs(address);
|
|
|
|
NTPPacket packet;
|
|
Poco::UInt8 p[1024];
|
|
packet.packet(&p[0]);
|
|
|
|
ntpSocket.sendTo(p, 48, address);
|
|
|
|
int received = 0;
|
|
try
|
|
{
|
|
Poco::Net::SocketAddress sender;
|
|
int n = ntpSocket.receiveFrom(p, sizeof(p)-1, sender);
|
|
|
|
if (n < 48) // NTP packet must have at least 48 bytes
|
|
throw Poco::Net::NTPException("Invalid response received");
|
|
|
|
packet.setPacket(p);
|
|
eventArgs.setPacket(packet);
|
|
++received;
|
|
response.notify(this, eventArgs);
|
|
}
|
|
catch (Poco::TimeoutException &)
|
|
{
|
|
// ignore
|
|
}
|
|
|
|
return received;
|
|
}
|
|
|
|
|
|
} } // namespace Poco::Net
|