add some debug logging to show more information about passing of sockets

between parent and child

the extra info is helpful when using a generic listener on an IPv6-
enabled box when either IPV6_V6ONLY isn't defined for the APR build
or httpd is built with IPv4-mapped addresses enabled

in that case you'll see the parent writing one socket but the child
expecting too, before it bails out with

(OS 109)The pipe has been ended.  : Child: Unable to read socket data
from parent

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1091421 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/server/mpm/winnt/mpm_winnt.c b/server/mpm/winnt/mpm_winnt.c
index fc10a8e3793de4e895671826da102a0b44e8dd59..777f0e57abcd26da21f8f461eb5759e803c76c13 100644 (file)
--- a/server/mpm/winnt/mpm_winnt.c
+++ b/server/mpm/winnt/mpm_winnt.c
@@ -432,6 +432,9 @@ static void get_listeners_from_parent(server_rec *s)
      * pipe = GetStdHandle(STD_INPUT_HANDLE);
      */
     for (lr = ap_listeners; lr; lr = lr->next, ++lcnt) {
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                     "Child: Waiting for data for listening socket %pI",
+                     lr->bind_addr);
         if (!ReadFile(pipe, &WSAProtocolInfo, sizeof(WSAPROTOCOL_INFO),
                       &BytesRead, (LPOVERLAPPED) NULL)) {
             ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
@@ -477,8 +480,8 @@ static int send_listeners_to_child(apr_pool_t *p, DWORD dwProcessId,
         lpWSAProtocolInfo = apr_pcalloc(p, sizeof(WSAPROTOCOL_INFO));
         apr_os_sock_get(&nsd, lr->sd);
         ap_log_error(APLOG_MARK, APLOG_INFO, APR_SUCCESS, ap_server_conf,
-                     "Parent: Duplicating socket %d and sending it to child process %lu",
-                     nsd, dwProcessId);
+                     "Parent: Duplicating socket %d (%pI) and sending it to child process %lu",
+                     nsd, lr->bind_addr, dwProcessId);
         if (WSADuplicateSocket(nsd, dwProcessId,
                                lpWSAProtocolInfo) == SOCKET_ERROR) {
             ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_netos_error(), ap_server_conf,