diff options
Diffstat (limited to 'lib/socket-util.c')
| -rw-r--r-- | lib/socket-util.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/lib/socket-util.c b/lib/socket-util.c index 38705cc51..3eb3a3816 100644 --- a/lib/socket-util.c +++ b/lib/socket-util.c @@ -660,7 +660,8 @@ exit: * zeros '*ss' and returns false. */ bool inet_parse_passive(const char *target_, int default_port, - struct sockaddr_storage *ss) + struct sockaddr_storage *ss, + bool resolve_host, bool *dns_failure) { char *target = xstrdup(target_); char *port, *host; @@ -672,7 +673,7 @@ inet_parse_passive(const char *target_, int default_port, ok = false; } else { ok = parse_sockaddr_components(ss, host, port, default_port, - target_, true, NULL); + target_, resolve_host, dns_failure); } if (!ok) { memset(ss, 0, sizeof *ss); @@ -710,8 +711,14 @@ inet_open_passive(int style, const char *target, int default_port, struct sockaddr_storage ss; int fd = 0, error; unsigned int yes = 1; + bool dns_failure; - if (!inet_parse_passive(target, default_port, &ss)) { + if (!inet_parse_passive(target, default_port, &ss, true, &dns_failure)) { + if (dns_failure) { + /* DNS failure means asynchronous DNS resolution is in progress, + * or that the name does currently not resolve. */ + return -EAGAIN; + } return -EAFNOSUPPORT; } kernel_chooses_port = ss_get_port(&ss) == 0; |