dnet_addr parse_addr(const std::string& addr) {
dnet_addr ret;
int port, family;
memset(&ret, 0, sizeof(ret));
ret.addr_len = sizeof(ret.addr);
std::string str_addr(addr);
int err = dnet_parse_addr(const_cast<char *>(str_addr.c_str()), &port, &family);
if (err) {
std::cerr << "Wrong remote addr: " << addr << "\n" << std::endl;
exit(1);
}
ret.family = family;
dnet_fill_addr(&ret, const_cast<char *>(str_addr.c_str()), port, SOCK_STREAM, IPPROTO_TCP);
return ret;
}
dnet_addr parse_addr(const std::string& addr) {
dnet_addr ret;
int port, family;
memset(&ret, 0, sizeof(ret));
ret.addr_len = sizeof(ret.addr);
std::vector<char> tmp_addr(addr.begin(), addr.end());
tmp_addr.push_back('\0');
int err = dnet_parse_addr(tmp_addr.data(), &port, &family);
if (err) {
std::cerr << "Wrong remote addr: " << addr << "\n" << std::endl;
exit(1);
}
ret.family = family;
dnet_fill_addr(&ret, tmp_addr.data(), port, SOCK_STREAM, IPPROTO_TCP);
return ret;
}
static bool is_bindable(int port)
{
const int family = AF_INET;
int s = ::socket(family, SOCK_STREAM, IPPROTO_TCP);
if (s < 0) {
int err = -errno;
throw std::runtime_error("Failed to create socket for family: "
+ boost::lexical_cast<std::string>(family)
+ ", err: "
+ ::strerror(-err)
+ ", "
+ boost::lexical_cast<std::string>(err));
}
dnet_addr addr;
addr.addr_len = sizeof(addr.addr);
addr.family = family;
int err = dnet_fill_addr(&addr, "127.0.0.1", port, SOCK_STREAM, IPPROTO_TCP);
if (err) {
::close(s);
throw std::runtime_error(std::string("Failed to parse address: ") + strerror(-err)
+ ", " + boost::lexical_cast<std::string>(err));
}
int salen = addr.addr_len;
struct sockaddr *sa = reinterpret_cast<struct sockaddr *>(addr.addr);
err = 0;
::setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &err, 4);
err = ::bind(s, sa, salen);
::close(s);
return (err == 0);
}
