2024-03-08 14:03:37 +08:00

78 lines
2.2 KiB
C++

#include <stdio.h>
#include <unistd.h>
#include <utility>
#include "muduo/base/Logging.h"
#include "muduo/net/Endian.h"
#include "muduo/net/EventLoop.h"
#include "muduo/net/InetAddress.h"
#include "muduo/net/TcpClient.h"
using namespace muduo;
using namespace muduo::net;
class TimeClient : noncopyable {
public:
TimeClient(EventLoop* loop, const InetAddress& serverAddr)
: loop_(loop), client_(loop, serverAddr, "TimeClient")
{
client_.setConnectionCallback(
std::bind(&TimeClient::onConnection, this, _1));
client_.setMessageCallback(
std::bind(&TimeClient::onMessage, this, _1, _2, _3));
// client_.enableRetry();
}
void connect() { client_.connect(); }
private:
EventLoop* loop_;
TcpClient client_;
void onConnection(const TcpConnectionPtr& conn)
{
LOG_INFO << conn->localAddress().toIpPort() << " -> "
<< conn->peerAddress().toIpPort() << " is "
<< (conn->connected() ? "UP" : "DOWN");
if (!conn->connected()) {
loop_->quit();
}
}
void onMessage(const TcpConnectionPtr& conn, Buffer* buf,
Timestamp receiveTime)
{
if (buf->readableBytes() >= sizeof(int32_t)) {
const void* data = buf->peek();
int32_t be32 = *static_cast<const int32_t*>(data);
buf->retrieve(sizeof(int32_t));
time_t time = sockets::networkToHost32(be32);
Timestamp ts(implicit_cast<uint64_t>(time) *
Timestamp::kMicroSecondsPerSecond);
LOG_INFO << "Server time = " << time << ", "
<< ts.toFormattedString();
} else {
LOG_INFO << conn->name() << " no enough data "
<< buf->readableBytes() << " at "
<< receiveTime.toFormattedString();
}
}
};
int main(int argc, char* argv[])
{
LOG_INFO << "pid = " << getpid();
if (argc > 1) {
EventLoop loop;
InetAddress serverAddr(argv[1], 2037);
TimeClient timeClient(&loop, serverAddr);
timeClient.connect();
loop.loop();
} else {
printf("Usage: %s host_ip\n", argv[0]);
}
}