#include <cstdlib>#include "file_tcp_soc.h"int main(int argc, char* argv[]){	int ret_val = 0;	int socfd = 0;		if(argc > 3)	{		cerr<<"Usage server <ip> <port>"<<endl;		cerr<<"or server <port>"<<endl;		cerr<<"or server"<<endl;		exit(1);	}		File_soc f_soc;		if (argc = 1)	{		ret_val = f_soc.init_serv(0,0);	}	else if (argc == 2)	{		ret_val = f_soc.init_serv(0,argv[1]);	}	else if (argc == 3)	{		ret_val = f_soc.init_serv(argv[1],argv[2]);	}		if (ret_val < 0)	{		cerr<<"init_serv() error!"<<endl;		exit(1);	}		for(;;)	{		socfd = f_soc.tcp_accept();		if(socfd == -1)		{			cerr<<"tcp_accept() error!"<<endl;			exit(1);		}				ret_val = f_soc.read_comd(socfd);		if(ret_val == -1)		{			cerr<<"read_comd() error!"<<endl;		}				ret_val = f_soc.read_file(socfd);		if(ret_val == -1)		{			cerr<<"read_file() error!"<<endl;		}				close(socfd);	}		return 0;		}