Simple connect Client

gistfile1.txt

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>

int slow_client( int port )
{
	FILE			*fp = NULL ;
	
	int			client_sock ;
	struct sockaddr_in	client_sockaddr ;
	
	char			buffer[ 30000 + 1 ] ;
	int			file_size ;
	int			total_size ;
	int			read_len ;
	int			write_len ;
	
	int			nret = 0 ;
	
	client_sock = socket( AF_INET , SOCK_STREAM , IPPROTO_TCP ) ;
	if( client_sock == -1 )
	{
		printf( "socket failed , errno[%d]\n" , errno );
		fclose( fp );
		return -1;
	}
	
	memset( & client_sockaddr , 0x00 , sizeof(struct sockaddr_in) );
	client_sockaddr.sin_family = AF_INET ;
	
	client_sockaddr.sin_addr.s_addr = inet_addr("127.0.0.1"); 
	client_sockaddr.sin_port = htons( (unsigned short)port );
	nret = connect( client_sock , (struct sockaddr *) & client_sockaddr , sizeof(struct sockaddr) ) ;
	if( nret == -1 )
	{
		printf( "connect failed , errno[%d]\n" , errno );
		return -1;
	}
	
	return 0;
}

int main( int argc , char *argv[] )
{
	if( argc != 1 + 1  )
		return 7;
	
	return -slow_client( atoi(argv[1]) );
}