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#include "config.h"
#include <stdio.h>
#include <string.h>
/**
* net - simple IPv4/IPv6 socket library
*
* This code makes it simple to support IPv4 and IPv6 without speed penalty
* in clients by using non-blocking simultaneous connect, and using
* a convenience function to create both IPv4 and IPv6 sockets for servers.
*
* License: MIT
*
* Author: Rusty Russell <rusty@rustcorp.com.au>
*
* Example:
* #include <ccan/net/net.h>
* #include <netinet/in.h>
* #include <stdio.h>
* #include <err.h>
*
* int main(int argc, char *argv[])
* {
* struct addrinfo *addr;
* const char *dest, *port;
* int fd;
* union {
* struct sockaddr s;
* struct sockaddr_in v4;
* struct sockaddr_in6 v6;
* } u;
* socklen_t slen = sizeof(u);
*
* 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);
*
* fd = net_connect(addr);
* if (fd < 0)
* err(1, "Failed to connect to %s", dest);
* freeaddrinfo(addr);
*
* if (getsockname(fd, &u.s, &slen) == 0)
* printf("Connected via %s\n",
* u.s.sa_family == AF_INET6 ? "IPv6"
* : u.s.sa_family == AF_INET ? "IPv4"
* : "UNKNOWN??");
* else
* err(1, "Failed to get socket type for connection");
* return 0;
* }
*/
int main(int argc, char *argv[])
{
/* Expect exactly one argument */
if (argc != 2)
return 1;
if (strcmp(argv[1], "depends") == 0) {
printf("ccan/noerr\n");
return 0;
}
return 1;
}
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