struct addrinfo serverInfo, *pToResult;
struct sockaddr_storage client_addr;
int serverfd, connectfd;

void createSocket(char**);
void bindSocketToPort(void);
void startListenAndAccept(void);
void recvAndSend(void);

int main(int argc, char *argv[])
{
     createSocket(argv);
     fprintf(stdout, "create socket function done");
     bindSocketToPort();
     startListenAndAccept();
     recvAndSend();
     return 0;
}

#define serv pToResult
void createSocket(char** argv)
{
     memset(&serverInfo, 0, sizeof serverInfo);
     serverInfo.ai_family = PF_INET;
     serverInfo.ai_socktype = SOCK_STREAM;

     if(getaddrinfo("127.0.0.1", argv[1], &serverInfo, &serv) != 0)
     {
           perror("getaddrinfo error");
           exit(1);
     }

     if( (serverfd = socket(serv->ai_family, serv->ai_socktype, serv->ai_protocol) ) == -1)
     {
           perror("socket error");
           exit(1);
     }
     puts("william");
     return;
}