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Problem: zmq_bind IPv4 fallback still tries IPv6

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Solution: if opening an IPv6 TCP socket fails because IPv6 is not
available, try to open an IPv4 socket instead when creating and
binding a TCP endpoint.
This commit is contained in:
Luca Boccassi 2016-04-06 17:15:39 +01:00
parent 284c743814
commit 792ee7690e
1 changed files with 3 additions and 3 deletions
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6
src/tcp_listener.cpp
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@ -159,13 +159,13 @@ int zmq::tcp_listener_t::set_address (const char *addr_)
#endif
// IPv6 address family not supported, try automatic downgrade to IPv4.
if (address.family () == AF_INET6
if (s == -1 && address.family () == AF_INET6
&& errno == EAFNOSUPPORT
&& options.ipv6) {
rc = address.resolve (addr_, true, true);
rc = address.resolve (addr_, true, false);
if (rc != 0)
return rc;
s = ::socket (address.family (), SOCK_STREAM, IPPROTO_TCP);
s = open_socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
}
#ifdef ZMQ_HAVE_WINDOWS