#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
+#include <netdb.h>
#include <gnutls/gnutls.h>
#include <zlib.h>
return 0;
}
-int main(int argc, char **argv)
+#define RNET_ADDRESS "receitanet.receita.fazenda.gov.br"
+
+static int connect_rnet(int *c)
{
+ struct addrinfo *addresses;
+ struct addrinfo *addr;
+ struct addrinfo hint;
struct sockaddr_in saddr;
+ int r;
+ int fd = *c = -1;
+ int i;
+ memset(&hint, 0, sizeof(hint));
+ hint.ai_family = AF_UNSPEC;
+ hint.ai_socktype = SOCK_STREAM;
+ hint.ai_protocol = IPPROTO_TCP;
+ hint.ai_flags = AI_ADDRCONFIG;
+ r = getaddrinfo(RNET_ADDRESS, "3456", &hint, &addresses);
+ if (r) {
+ return r;
+ }
+ for (addr = addresses; addr != NULL; addr = addr->ai_next) {
+ fd = socket(addr->ai_family, addr->ai_socktype,
+ addr->ai_protocol);
+ if (fd >= 0)
+ if (!(r = connect(fd, addr->ai_addr,
+ addr->ai_addrlen)))
+ break;
+ close(fd);
+ fd = -1;
+ }
+ freeaddrinfo(addresses);
+ *c = fd;
+ if (fd == -1)
+ return EAI_SYSTEM;
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
int c;
int r;
char buffer[2048];
gnutls_session_t session;
gnutls_global_init();
session_new(&session);
- c = socket(PF_INET, SOCK_STREAM, 0);
- saddr.sin_family = AF_INET;
- saddr.sin_port = htons(3456);
- saddr.sin_addr.s_addr = inet_addr("161.148.185.11");
- r = connect(c, (struct sockaddr *) &saddr, sizeof(saddr));
- if (r < 0) {
+ r = connect_rnet(&c);
+ if (r) {
fprintf(stderr, "error connecting to server: %s\n",
- strerror(errno));
+ r == EAI_SYSTEM ? strerror(errno) : gai_strerror(r));
exit(1);
}
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) c);