最近一直有人問我會不會c++的socket,其實我感覺c++只不過是類中多了一些方法,把c中面向過程的內容搬到c++的類方法中.大致並沒有多大改變.幹嗎還要問你會不會了
----------------------------------------------------------------下面是C++ server端-----------------------------------------------------------------
#include <iostream>
#include <string>
#include <sys/types.h> /* See NOTES */
#include <sys/socket.h>
#include <arpa/inet.h>
#include <cstring>
#include <unistd.h>
#include <cstdio>
using namespace std;
class Server
{
private:
int port; //端口號
int sfd; //監聽套接字
int cfd; //客戶端套接字
struct sockaddr_in server_addr; //服務端ip
struct sockaddr_in client_addr; //客戶端ip
socklen_t c_len;
public:
//有參構造函數
Server(int port=8888):port(port),sfd(-1),cfd(-1)
{
sfd = socket(AF_INET,SOCK_STREAM,0);
if(-1 == sfd)
{
throw("創建套接字失敗\n");
}
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(port);
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
bind(sfd,(struct sockaddr*)&server_addr,sizeof(server_addr));
listen(sfd,128);
}
//函數運行
void run()
{
if(sfd >= 0)
{
cfd = accept(sfd,(struct sockaddr*)&client_addr,&c_len);
char buf[BUFSIZ] = {0};
int len = 0;
int opt = 1;
setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
while(1)
{
len = recv(cfd,buf,sizeof(buf),0);
if(len <= 0)
{
break;
}
cout <<"\n讀到數據了\n" <<endl;
cout << buf <<endl;
send(cfd,buf,strlen(buf),0);
memset(buf,0,sizeof(buf));
}
}
}
~Server()
{
cout <<"析構" <<endl;;//析構
if(-1 != sfd)
shutdown(sfd,SHUT_RDWR);
if(-1 != cfd)
shutdown(cfd,SHUT_RDWR);
}
};
void test()
{
Server *s = NULL;
try
{
s = new Server;
s->run();
}
catch(char const*str)
{
cout << str <<endl;
}
catch(...)
{
cout<<"萬能捕獲"<<endl;
}
delete s;
}
int main(int argc, char *argv[])
{
test();
return 0;
}
----------------------------------------------------------------下面是C++ client端-----------------------------------------------------------------
#include <iostream>
#include <string>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <cstring>
#include <cstdio>
#include <signal.h>
using namespace std;
class Client
{
private:
int sfd;
struct sockaddr_in serveraddr;
int port;
public:
Client(int port=8888):port(port)
{
sfd = socket(AF_INET,SOCK_STREAM,0);
int ret = 0;
if(-1 == sfd)
{
throw "創建套接字失敗";
}
serveraddr.sin_family = AF_INET;
serveraddr.sin_port = htons(port);
inet_pton(AF_INET,"127.0.0.1",&serveraddr.sin_addr.s_addr);
ret = connect(sfd,(struct sockaddr*)&serveraddr,sizeof(serveraddr));
if(ret == -1)
{
throw "連接失敗";
}
}
//發送數據
void sendpost()
{
char buf[1024] = {0};
signal(SIGPIPE,SIG_IGN);
while(1)
{
cout << "請輸入你要發送的數據" << endl;
scanf("%s",buf);
//發送數據
while(send(sfd,buf,strlen(buf),0)<=0)
{
break;
}
memset(buf,0,sizeof(buf));
//接收數據
while(recv(sfd,buf,sizeof(buf),0) == 0)
{
break;
}
cout << buf << endl;
memset(buf,0,sizeof(buf));
}
}
~Client()
{
if(-1 == sfd)
{
shutdown(sfd,SHUT_RDWR);
}
}
};
int main(int argc, char *argv[])
{
try
{
Client *c = new Client;
c->sendpost();
delete c;
}
catch(const char *str)
{
cout << str << endl;
}
return 0;
}