int _tmain(int argc, _TCHAR* argv[])
{
WSADATA ws;
WSAStartup(MAKEWORD(2, 2), &ws);;
struct proxy *prox;
prox = proxy_create();
assert(prox);
proxy_set(prox, "192.168.79.1", 1080, "test", "0");
proxy_connect(prox, "113.108.16.44", 25);
proxy_recv_line(prox, buff, 512);
return 0;
}
int proxy_connect(int sockfd, struct sockaddr *serv_addr, int
addrlen )
{
struct sockaddr_in name;
int ret;
switch (proxy_type) {
case PROXY_NONE:
/* normal use */
return (connect(sockfd,serv_addr,addrlen));
break;
case PROXY_HTTP: /* Http proxy */
/* do the tunneling */
/* step one : connect to proxy */
{
struct hostent *hostinfo;
unsigned short shortport = proxy_port;
memset (&name, 0, sizeof (name));
name.sin_family = AF_INET;
name.sin_port = htons (shortport);
hostinfo = gethostbyname (proxy_host);
if (hostinfo == NULL) {
fprintf (stderr, "Unknown host %s.\n", proxy_host);
return (-1);
}
name.sin_addr = *(struct in_addr *) hostinfo->h_addr;
}
toc_debug_printf("Trying to connect ...\n");
if ((ret = connect(sockfd,(struct sockaddr *)&name,sizeof(name)))<0)
return(ret);
/* step two : do proxy tunneling init */
{
char cmd[80];
char *inputline;
unsigned short realport=ntohs(((struct sockaddr_in *)serv_addr)->sin_port);
sprintf(cmd,"CONNECT %s:%d HTTP/1.1\n\r\n\r",proxy_realhost,realport);
toc_debug_printf("<%s>\n",cmd);
if (send(sockfd,cmd,strlen(cmd),0)<0)
return(-1);
if (proxy_recv_line(sockfd,&inputline) < 0) {
return(-1);
}
toc_debug_printf("<%s>\n",inputline);
if (memcmp("HTTP/1.0 200 Connection established",inputline,35))
if (memcmp("HTTP/1.1 200 Connection established",inputline,35)) {
free(inputline);
return(-1);
}
while (strlen(inputline)>1) {
free(inputline);
if (proxy_recv_line(sockfd,&inputline) < 0) {
return(-1);
}
toc_debug_printf("<%s>\n",inputline);
}
free(inputline);
}
return ret;
break;
case PROXY_SOCKS:
fprintf(stderr,"Socks proxy is not yet implemented.\n");
return(-1);
break;
default:
fprintf(stderr,"Unknown proxy type : %d.\n",proxy_type);
break;
}
return(-1);
}