#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#include <netdb.h>#include<stdio.h>#include<string.h>	char check_error[16348]={};	struct sockaddr_in pin;	struct hostent *server_host_name;int socket_com(char *host_name,int port, char *str){		char buf[8192]={};	char port_exchange[10]={};        int socket_descriptor;        int errorcount1=1;        int errorcount2=1;        int errorcount3=1;        int errorcount4=1;        int errorcount5=1;        int export_flag=0;//resolving the host name	while(errorcount1<=3)	{	if((server_host_name=gethostbyname(host_name))==0)		errorcount1++;        else break;	}	if(errorcount1==4)	{	strcpy(check_error,"Host_name:");	strcat(check_error,host_name);	strcat(check_error," Port:");	sprintf(port_exchange,"%d",port);	strcat(check_error,port_exchange);	strcat(check_error,": Error resolving local host\n");	return -1;        } //init the port now	bzero(&pin,sizeof(pin));	pin.sin_family=AF_INET;	pin.sin_addr.s_addr=htonl(INADDR_ANY);	pin.sin_addr.s_addr=((struct in_addr*)(server_host_name->h_addr))->s_addr;        pin.sin_port=htons(port);//create socket	while(errorcount2<=3)	{	if((socket_descriptor=socket(AF_INET,SOCK_STREAM,0))==-1)	errorcount2++;        else  break;        }	if(errorcount2==4)	{	strcpy(check_error,"Host_name:");	strcat(check_error,host_name);	strcat(check_error," Port:");	sprintf(port_exchange,"%d",port);        strcat(check_error,port_exchange);        strcat(check_error,": Error create socket\n");	return -1;        }//check connect	while(errorcount3<=3)	{	if(connect(socket_descriptor,(void*)&pin,sizeof(pin))==-1)	errorcount3++;      	else  break;        }        if(errorcount3==4)        {	strcpy(check_error,"Host_name:");	strcat(check_error,host_name);	strcat(check_error," Port:");	sprintf(port_exchange,"%d",port);        strcat(check_error,port_exchange);        strcat(check_error,": Error connecting socket\n");	return -1;        }//check send	while(errorcount4<=3)        {	if(send(socket_descriptor,str,strlen(str),0)==-1)        errorcount4++;        else  break;        }        if(errorcount4==4)        {	strcpy(check_error,"Host_name:");	strcat(check_error,host_name);	strcat(check_error," Port:");	sprintf(port_exchange,"%d",port);        strcat(check_error,port_exchange);        strcat(check_error,": Error in send\n");	return -1;        }//check receive             	while(errorcount5<=3)        {        if(recv(socket_descriptor, buf, 8192, 0)==-1)        errorcount5++;        else  break;        }       if(errorcount5==4)	{	strcpy(check_error,"Host_name:");	strcat(check_error,host_name);	strcat(check_error," Port:");	sprintf(port_exchange,"%d",port);        strcat(check_error,port_exchange);        strcat(check_error,": Error in receive\n");	return -1;        }//check result   	strcpy(check_error,buf);        close(socket_descriptor);   return 0;}