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#include <stdio.h>
#include <winsock.h>
#include <string.h>
#pragma comment(lib, "ws2_32.lib")
void geturl(char *url)
{
WSADATA WSAData={0};
SOCKET sockfd;
struct sockaddr_in addr;
struct hostent *pURL;
char myurl[BUFSIZ];
char *pHost = 0, *pGET = 0;
char host[BUFSIZ], GET[BUFSIZ];
char header[BUFSIZ] = "";
static char text[BUFSIZ];
int i;
//windows.init
if(WSAStartup(MAKEWORD(2,2), &WSAData))
{
printf("WSA failed\n");
return;
}
//url.extract
strcpy(myurl, url);
for (pHost = myurl; *pHost != '/' && *pHost != '\0'; ++pHost);
if ( (int)(pHost - myurl) == strlen(myurl) )
strcpy(GET, "/");
else
strcpy(GET, pHost);
*pHost = '\0';
strcpy(host, myurl);
printf("%s\n%s\n", host, GET);
//socket.init
sockfd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
pURL = gethostbyname(host);
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = *((unsigned long*)pURL->h_addr);
addr.sin_port = htons(80);
//message
strcat(header, "GET ");
strcat(header, GET);
strcat(header, " HTTP/1.1\r\n");
strcat(header, "HOST: ");
strcat(header, host);
strcat(header, "\r\nConnection: Close\r\n\r\n");
//send.message
connect(sockfd,(SOCKADDR *)&addr,sizeof(addr));
send(sockfd, header, strlen(header), 0);
//receive.message
FILE *f= fopen("a.jpg", "w");
recv(sockfd, text, BUFSIZ, 0);
char *loc= strstr(text, "\r\n\r\n");
fputs(loc, f);
int irev;
while ( (irev= recv(sockfd, text, BUFSIZ, 0)) > 0)
{
fputs(text, f);
strnset(text, '\0', BUFSIZ);
}
fclose(f);
closesocket(sockfd);
WSACleanup();