Properly print the IP number and "localhost" for failed localhost

connections when the server is down, on Win32.

diff --git a/src/interfaces/libpq/fe-connect.c b/src/interfaces/libpq/fe-connect.c
index 8d9400b..bf8beb7 100644 (file)
--- a/src/interfaces/libpq/fe-connect.c
+++ b/src/interfaces/libpq/fe-connect.c
@@ -1030,20 +1030,25 @@ connectFailureMessage(PGconn *conn, int errorno)
                else
                        strcpy(host_addr, "???");
 
+               /*
+                *      If the user did not supply an IP address using 'hostaddr', and
+                *      'host' was missing or does not match our lookup, display the
+                *      looked-up IP address.
+                */
                display_host_addr = (conn->pghostaddr == NULL) &&
-                                                       (conn->pghost != NULL) &&
-                                                       (strcmp(conn->pghost, host_addr) != 0);
+                                                       ((conn->pghost == NULL) ||
+                                                        (strcmp(conn->pghost, host_addr) != 0));
 
                appendPQExpBuffer(&conn->errorMessage,
                                                  libpq_gettext("could not connect to server: %s\n"
                                         "\tIs the server running on host \"%s\"%s%s%s and accepting\n"
                                                                                "\tTCP/IP connections on port %s?\n"),
                                                  SOCK_STRERROR(errorno, sebuf, sizeof(sebuf)),
-                                                 conn->pghostaddr
+                                                 (conn->pghostaddr && conn->pghostaddr[0] != '\0')
                                                  ? conn->pghostaddr
-                                                 : (conn->pghost
+                                                 : (conn->pghost && conn->pghost[0] != '\0')
                                                         ? conn->pghost
-                                                        : "???"),
+                                                        : DefaultHost,
                                                  /* display the IP address only if not already output */
                                                  display_host_addr ? " (" : "",
                                                  display_host_addr ? host_addr : "",
@@ -1304,7 +1309,7 @@ connectDBStart(PGconn *conn)
                UNIXSOCK_PATH(portstr, portnum, conn->pgunixsocket);
 #else
                /* Without Unix sockets, default to localhost instead */
-               node = "localhost";
+               node = DefaultHost;
                hint.ai_family = AF_UNSPEC;
 #endif   /* HAVE_UNIX_SOCKETS */
        }
@@ -3388,7 +3393,7 @@ ldapServiceLookup(const char *purl, PQconninfoOption *options,
        /* hostname */
        hostname = url + strlen(LDAP_URL);
        if (*hostname == '/')           /* no hostname? */
-               hostname = "localhost"; /* the default */
+               hostname = DefaultHost; /* the default */
 
        /* dn, "distinguished name" */
        p = strchr(url + strlen(LDAP_URL), '/');