winapi - socket - webdownload
Hi. can somebody help me. i want to get the completly download of an html -> in one string.
Code:
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
/* Windows-System */
#ifdef _WIN32
#include <winsock.h>
#include <io.h>
/* Unix-System */
#else
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <unistd.h>
#endif
#define HTTP_PORT 80
int main(int argc, char **argv)
{
int sock;
struct sockaddr_in host_addr;
struct hostent *hostinfo;
char *host, *file;
char command[1024];
char buf[1024];
int bytes_sent, bytes_recv;
/* Ist der Aufruf korrekt? */
if (argc != 3) {
fprintf (stderr, "Aufruf: httprecv host file\n");
exit (EXIT_FAILURE);
}
host = argv[1];
file = argv[2];
/* ggf. Winsock initialisieren */
#ifdef _WIN32
WSADATA wsaData;
if (WSAStartup (MAKEWORD(1, 1), &wsaData) != 0) {
fprintf (stderr, "WSAStartup(): Kann Winsock nicht initialisieren.\n");
exit (EXIT_FAILURE);
}
#endif
/* Socket erzeugen */
sock = socket (AF_INET, SOCK_STREAM, 0);
if (sock == -1) {
perror ("socket()");
exit (EXIT_FAILURE);
}
/* Adresse des Servers festlegen */
memset( &host_addr, 0, sizeof (host_addr));
host_addr.sin_family = AF_INET;
host_addr.sin_port = htons (HTTP_PORT);
host_addr.sin_addr.s_addr = inet_addr (host);
if (host_addr.sin_addr.s_addr == INADDR_NONE) {
/* Server wurde nicht mit IP sondern mit dem Namen angegeben */
hostinfo = gethostbyname (host);
if (hostinfo == NULL) {
perror ("gethostbyname()");
exit (EXIT_FAILURE);
}
memcpy((char*) &host_addr.sin_addr.s_addr, hostinfo->h_addr, hostinfo->h_length);
}
/* Verbindung aufbauen */
if (connect(sock, (struct sockaddr *) &host_addr, sizeof(struct sockaddr)) == -1) {
perror ("connect()");
exit (EXIT_FAILURE);
}
/* HTTP-GET-Befehl erzeugen */
sprintf (command, "GET %s HTTP/1.0\nHost: %s\n\n", file, host);
/* Befehl senden */
bytes_sent = send (sock, command, strlen (command), 0);
if (bytes_sent == -1) {
perror ("send()");
exit (EXIT_FAILURE);
}
// Antwort des Servers empfangen und ausgeben */
while ((bytes_recv = recv (sock, buf, sizeof(buf), 0)) > 0) {
write (1, buf, bytes_recv);
}
if (bytes_recv == -1) {
perror ("recv()");
exit (EXIT_FAILURE);
}
printf ("\n");
#ifdef _WIN32
closesocket(sock);
WSACleanup();
#else
close(sock);
#endif
return 0;
}
