muduo网路库——InetAddress
这个类的主要作用就是封装socket。
由于博主是在windows平台下,所以用的头文件时windows.h
和Ws2tcpip.h
。
linux平台下应该用sys/socket.h
、netinet/in.h
和arpa/inet.h
。
InetAddress.h
#pragma once
/* linux下 * #include<arpa/inet.h> //for sockaddr * #include <netinet/in.h> */
#include <string>
#include <windows.h>
//封装socket地址类型
class InetAddress
{
public:
//接收端口号和IP地址,填充addr_
explicit InetAddress(uint16_t port ,std::string ip = "127.0.0.1");
explicit InetAddress(const sockaddr_in& addr):addr_(addr){
}
std::string toIP() const;
std::string toIPPort() const;
uint16_t toPort() const;
const sockaddr_in* getSockAddr() const {
return &addr_; }
private:
sockaddr_in addr_;
};
InetAddress
#include "InetAddress.h"
#include <Ws2tcpip.h>
#include <string.h>
/* * windows下: * #include <WS2tcpip.h> * linux下: * #include <sys/socket.h> * #include <netinet/in.h> * #include<arpa/inet.h> */
//无法包含strings.h头文件 自己写了一下bzero
#define bzero(a, b) memset(a, 0, b)
//接收端口号和IP地址,填充addr_
InetAddress::InetAddress(uint16_t port,std::string ip)
{
bzero(&addr_,sizeof addr_);
addr_.sin_family = AF_INET;
//主机字节序到网络字节序
addr_.sin_port = htons(port);
//字符串转成整型数据
addr_.sin_addr.s_addr = inet_addr(ip.c_str());
}
std::string InetAddress::toIP() const
{
//addr_ 读取ip地址,转换成点分十进制
char buf[64] = {
0};
inet_ntop(AF_INET, &addr_.sin_addr, buf, sizeof buf);
return buf;
}
std::string InetAddress::toIPPort() const
{
//ip:port
char buf[64] = {
0};
inet_ntop(AF_INET, &addr_.sin_addr, buf, sizeof buf);
uint16_t port = ntohs(addr_.sin_port);
sprintf(buf+strlen(buf),":%u",port);
return buf;
}
uint16_t InetAddress::toPort() const
{
return ntohs(addr_.sin_port);
}
测试代码
#include <iostream>
int main()
{
InetAddress addr(8000);
std::cout << addr.toIPPort()<< std::endl;
}
测试结果:
127.0.0.1:8000
测试正常!
参考文献
[1] 施磊.重写moduo库.图论科技.2020.7.