socket_html.h

it is about embeded system

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <netdb.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
int getHtmlFile(char *hostip,char *file)
{
	int fd;
	int flag=0;
	FILE *fp;
	char buf[1024];
	int dnum;
	char quest[1024];
	char filename[60];
	int rc;
	struct sockaddr_in peer;
	char hosturl[40];
	struct hostent *hp; //= gethostbyname(argv[1]);

	printf("start...\n");
	strcpy(hosturl,hostip);
	hp=gethostbyname(hosturl);
	bzero( &peer, sizeof(peer) );
	peer.sin_family = AF_INET;
	printf("why? %s\n",hosturl);
	if ( hp == NULL )
	{
		printf("unknow host: %s\n",hosturl);
		return 0;
	}
	peer.sin_addr = *( ( struct in_addr * )hp->h_addr );
	peer.sin_port = htons(80);
	printf("test...\n");
	printf("conncet to %s :%d \n",inet_ntoa(peer.sin_addr),ntohs( peer.sin_port ));
	
	fd = socket( AF_INET, SOCK_STREAM, 0 );
	if ( fd < 0 )
	{
		printf("socket call failed\n");
		return 0;
	}

	if( connect( fd, (struct sockaddr *)&peer, sizeof( peer ) ) )
	{
		printf("%d connect failed \n",errno);
		close( fd );
		return 0;
	}
	sprintf(filename,file);
	sprintf(quest,"GET /%s HTTP/1.0\r\nUser-agent:Mozilla/4.0\r\nAccept-language:zh-cn\r\n\r\n",file);
	printf("I will read for you! %s \n------------------------\n%s\n",quest,filename);
	if((rc = send(fd, quest, sizeof(quest), 0)) == -1)
	{
		if((errno != EWOULDBLOCK) && (errno != EAGAIN))
		{
			printf("send conn error!\n");
			return 0;
		}
	}
	fp = fopen( filename, "wb" );
	if(fp==NULL)
		return 0;
	flag=0;
	while((rc = recv( fd, buf, sizeof(buf) - 1, 0 )) > 0)
	{
		fwrite(buf, sizeof(char), rc, fp);
		printf("%s",buf);
		flag+=1;
	}
	fclose( fp );
	return flag-1;
}