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socket_server1.1.cpp
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socket_server1.1.cpp
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#include <unistd.h>
#include <iostream>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <iostream>
#include <fstream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <vector>
#define MAXSIZE 5
using namespace std;
struct DATA
{
int x;
int y;
};
class tcp_server
{
private:
int socket_fd,accept_fd;
sockaddr_in myserver;
sockaddr_in remote_addr;
public:
tcp_server(int listen_port);
int recv_msg();
};
tcp_server::tcp_server(int listen_port)
{
if(( socket_fd = socket(PF_INET,SOCK_STREAM,IPPROTO_TCP)) < 0 )
{
throw "socket() failed";
}
memset(&myserver,0,sizeof(myserver));
myserver.sin_family = AF_INET;
myserver.sin_addr.s_addr = htonl(INADDR_ANY);
myserver.sin_port = htons(listen_port);
if( bind(socket_fd,(sockaddr*) &myserver,sizeof(myserver)) < 0 )
{
cout << "ERROR" << endl;
throw "bind() failed";
}
if( listen(socket_fd,10) < 0 )
{
throw "listen() failed";
}
}
int tcp_server::recv_msg()
{
while(true)
{
socklen_t sin_size = sizeof(struct sockaddr_in);
if(( accept_fd = accept(socket_fd,(struct sockaddr*) &remote_addr,&sin_size)) == -1 )
{
cout << "while error" << endl;
throw "Accept error!";
continue;
}
printf("Received a connection from %s\n",(char*) inet_ntoa(remote_addr.sin_addr));
if(!fork())
{
//while(true)
//{
DATA data;
if( ( read(accept_fd, (char*)&data, sizeof(DATA))) < 0 )
{
throw("Read() error!");
break;
}
else
{
cout << data.x << " + " << data.y << " = " << data.x + data.y << endl;
}
/*if( ( write(accept_fd,buffer,5)) < 0 )
{
throw("Write() error!");
}*/
//}
close(accept_fd);
}
}
return 0;
}
int main(int argc, char* argv[])
{
tcp_server ts(atoi(argv[1]));
ts.recv_msg();
return 0;
}