V4MAPPED address works fine. One caveat is that the log will have IPv6-formatted IP address, e.g. ::ffff:127.0.0.1. If somebody do mind, it is possible to remove "::ffff".
-{section: Ulrich Mystery}
-Ulrich's Userlevel IPv6 Programming Introductionn - http://people.redhat.com/drepper/userapi-ipv6.html
-
-He denotes gethostbyaddr() as an obsolete. However, gethostbyaddr() accepts a socket type as a parameter. (AF_INET, AF_INET6) That means it should work well with IPv6. Why it is obsolete??
-
-We should continue to use gethostbyaddr() because there is no other way to get DNS aliases using newer socket functions.
-
-Try getaddrinfo() on www.yahoo.com. You only get 'any-fp.wa1.b.yahoo.com'.
-But if you call gethostbyname() on www.yahoo.com, you will get additional hostnames (aliases), which are www.yahoo.com and fp.wg1.b.yahoo.com.
-
{section: Converting Sock}
Sock is not only used by TCP/UDP connection but also used by Unix domain socket (AF_UNIX). Basically, Sock can only create TCP or UDP socket internally but SharedEndPoint and SharedPortClient creates Unix domain socket and calls Sock::assign() to pass the descriptor.
@@ -116,6 +106,8 @@
{section: List of Condor IP addr functions}
+These are almost done. At some point, should deprecate internet.c and my_hostname.cpp.
+
{code}
// from condor_c++_util/get_full_hostname.cpp
@@ -138,15 +130,10 @@
// from condor_util_lib/internet.c
// internet.c is a total failure...... tons of old-style codings
-
int is_ipaddr(const char *inbuf, struct in_addr *sin_addr);
-
int is_ipaddr_no_wildcard(const char *inbuf, struct in_addr *sin_addr);
-
int is_ipaddr_wildcard(const char *inbuf, struct in_addr *sin_addr, struct in_addr *mask_addr);
-
int is_valid_network( const char *network, struct in_addr *ip, struct in_addr *mask);
-
int is_valid_sinful( const char *sinful );
// there are many more from internet.c. omitted at this time.
@@ -173,6 +160,18 @@
In this case, peer_addr() can also fail.
+{subsection: Ulrich Mystery}
+Ulrich's Userlevel IPv6 Programming Introductionn - http://people.redhat.com/drepper/userapi-ipv6.html
+
+He denotes gethostbyaddr() as an obsolete. However, gethostbyaddr() accepts a socket type as a parameter. (AF_INET, AF_INET6) That means it should work well with IPv6. Why it is obsolete??
+
+We should continue to use gethostbyaddr() because there is no other way to get DNS aliases using newer socket functions.
+
+Try getaddrinfo() on www.yahoo.com. You only get 'any-fp.wa1.b.yahoo.com'.
+But if you call gethostbyname() on www.yahoo.com, you will get additional hostnames (aliases), which are www.yahoo.com and fp.wg1.b.yahoo.com.
+
+
+
{subsection: Returning a pointer of a static buffer inside a function}
It is quite common practice in Condor source code that returning a pointer of a static buffer in a function. It was perfectly fine in a world that pthread is rare and multi-core is unknown. It is obviously non-re-entrant and non-thread-safe. Well, I could do as it was. But, I am slightly uncomfortable of writing such a function. So, I decided to use MyString instead of returning a pointer of a static buffer.
