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#include <ccan/net/net.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stdio.h>
#include <err.h>
static unsigned int count_addrs(const struct addrinfo *addr, int family)
{
unsigned int num = 0;
while (addr) {
if (family == AF_UNSPEC || family == addr->ai_family)
num++;
addr = addr->ai_next;
}
return num;
}
int main(int argc, char *argv[])
{
struct addrinfo *addr;
const char *dest, *port;
int fd;
struct sockaddr saddr;
socklen_t slen = sizeof(saddr);
if (argc == 2) {
dest = argv[1];
port = "http";
} else if (argc == 3) {
dest = argv[1];
port = argv[2];
} else
errx(1, "Usage: test-net <target> [<port>]");
addr = net_client_lookup(dest, port, AF_UNSPEC, SOCK_STREAM);
if (!addr)
err(1, "Failed to look up %s", dest);
printf("Received %u IPv4 addresses, %u IPv6 addresses\n",
count_addrs(addr, AF_INET), count_addrs(addr, AF_INET6));
fd = net_connect(addr);
if (fd < 0)
err(1, "Failed to connect to %s", dest);
if (getsockname(fd, &saddr, &slen) == 0)
printf("Connected via %s\n",
saddr.sa_family == AF_INET6 ? "IPv6"
: saddr.sa_family == AF_INET ? "IPv4"
: "UNKNOWN??");
else
err(1, "Failed to get socket type for connection");
return 0;
}
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